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Update IDF to a0468b2 (#2108)

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* Update IDF to a0468b2

* add missing ld file

* Fix PIO builds and change coex policy
This commit is contained in:
Me No Dev 2018-11-26 23:22:11 +01:00 committed by GitHub
parent c3ec91f968
commit 04963009ee
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GPG Key ID: 4AEE18F83AFDEB23
988 changed files with 114643 additions and 65141 deletions
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4
platform.txt
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@ -22,7 +22,7 @@ compiler.warning_flags.all=-Wall -Werror=all -Wextra
compiler.path={runtime.tools.xtensa-esp32-elf-gcc.path}/bin/
compiler.sdk.path={runtime.platform.path}/tools/sdk
compiler.cpreprocessor.flags=-DESP_PLATFORM -DMBEDTLS_CONFIG_FILE="mbedtls/esp_config.h" -DHAVE_CONFIG_H "-I{compiler.sdk.path}/include/config" "-I{compiler.sdk.path}/include/bluedroid" "-I{compiler.sdk.path}/include/bluedroid/api" "-I{compiler.sdk.path}/include/app_trace" "-I{compiler.sdk.path}/include/app_update" "-I{compiler.sdk.path}/include/bootloader_support" "-I{compiler.sdk.path}/include/bt" "-I{compiler.sdk.path}/include/driver" "-I{compiler.sdk.path}/include/esp32" "-I{compiler.sdk.path}/include/esp_adc_cal" "-I{compiler.sdk.path}/include/esp_http_client" "-I{compiler.sdk.path}/include/esp_https_ota" "-I{compiler.sdk.path}/include/esp-mqtt" "-I{compiler.sdk.path}/include/esp-tls" "-I{compiler.sdk.path}/include/ethernet" "-I{compiler.sdk.path}/include/fatfs" "-I{compiler.sdk.path}/include/freertos" "-I{compiler.sdk.path}/include/heap" "-I{compiler.sdk.path}/include/http_server" "-I{compiler.sdk.path}/include/jsmn" "-I{compiler.sdk.path}/include/log" "-I{compiler.sdk.path}/include/mdns" "-I{compiler.sdk.path}/include/mbedtls" "-I{compiler.sdk.path}/include/mbedtls_port" "-I{compiler.sdk.path}/include/newlib" "-I{compiler.sdk.path}/include/nvs_flash" "-I{compiler.sdk.path}/include/openssl" "-I{compiler.sdk.path}/include/spi_flash" "-I{compiler.sdk.path}/include/sdmmc" "-I{compiler.sdk.path}/include/smartconfig_ack" "-I{compiler.sdk.path}/include/spiffs" "-I{compiler.sdk.path}/include/tcpip_adapter" "-I{compiler.sdk.path}/include/tcp_transport" "-I{compiler.sdk.path}/include/ulp" "-I{compiler.sdk.path}/include/vfs" "-I{compiler.sdk.path}/include/wear_levelling" "-I{compiler.sdk.path}/include/xtensa-debug-module" "-I{compiler.sdk.path}/include/lwip" "-I{compiler.sdk.path}/include/coap" "-I{compiler.sdk.path}/include/console" "-I{compiler.sdk.path}/include/expat" "-I{compiler.sdk.path}/include/json" "-I{compiler.sdk.path}/include/newlib" "-I{compiler.sdk.path}/include/nghttp" "-I{compiler.sdk.path}/include/soc" "-I{compiler.sdk.path}/include/wpa_supplicant"
compiler.cpreprocessor.flags=-DESP_PLATFORM -DMBEDTLS_CONFIG_FILE="mbedtls/esp_config.h" -DHAVE_CONFIG_H "-I{compiler.sdk.path}/include/config" "-I{compiler.sdk.path}/include/app_trace" "-I{compiler.sdk.path}/include/app_update" "-I{compiler.sdk.path}/include/asio" "-I{compiler.sdk.path}/include/bootloader_support" "-I{compiler.sdk.path}/include/bt" "-I{compiler.sdk.path}/include/coap" "-I{compiler.sdk.path}/include/console" "-I{compiler.sdk.path}/include/driver" "-I{compiler.sdk.path}/include/esp-tls" "-I{compiler.sdk.path}/include/esp32" "-I{compiler.sdk.path}/include/esp_adc_cal" "-I{compiler.sdk.path}/include/esp_event" "-I{compiler.sdk.path}/include/esp_http_client" "-I{compiler.sdk.path}/include/esp_http_server" "-I{compiler.sdk.path}/include/esp_https_ota" "-I{compiler.sdk.path}/include/esp_https_server" "-I{compiler.sdk.path}/include/esp_ringbuf" "-I{compiler.sdk.path}/include/ethernet" "-I{compiler.sdk.path}/include/expat" "-I{compiler.sdk.path}/include/fatfs" "-I{compiler.sdk.path}/include/freemodbus" "-I{compiler.sdk.path}/include/freertos" "-I{compiler.sdk.path}/include/heap" "-I{compiler.sdk.path}/include/idf_test" "-I{compiler.sdk.path}/include/jsmn" "-I{compiler.sdk.path}/include/json" "-I{compiler.sdk.path}/include/libsodium" "-I{compiler.sdk.path}/include/log" "-I{compiler.sdk.path}/include/lwip" "-I{compiler.sdk.path}/include/mbedtls" "-I{compiler.sdk.path}/include/mdns" "-I{compiler.sdk.path}/include/micro-ecc" "-I{compiler.sdk.path}/include/mqtt" "-I{compiler.sdk.path}/include/newlib" "-I{compiler.sdk.path}/include/nghttp" "-I{compiler.sdk.path}/include/nvs_flash" "-I{compiler.sdk.path}/include/openssl" "-I{compiler.sdk.path}/include/protobuf-c" "-I{compiler.sdk.path}/include/protocomm" "-I{compiler.sdk.path}/include/pthread" "-I{compiler.sdk.path}/include/sdmmc" "-I{compiler.sdk.path}/include/smartconfig_ack" "-I{compiler.sdk.path}/include/soc" "-I{compiler.sdk.path}/include/spi_flash" "-I{compiler.sdk.path}/include/spiffs" "-I{compiler.sdk.path}/include/tcp_transport" "-I{compiler.sdk.path}/include/tcpip_adapter" "-I{compiler.sdk.path}/include/ulp" "-I{compiler.sdk.path}/include/unity" "-I{compiler.sdk.path}/include/vfs" "-I{compiler.sdk.path}/include/wear_levelling" "-I{compiler.sdk.path}/include/wifi_provisioning" "-I{compiler.sdk.path}/include/wpa_supplicant" "-I{compiler.sdk.path}/include/xtensa-debug-module"
compiler.c.cmd=xtensa-esp32-elf-gcc
compiler.c.flags=-std=gnu99 -Os -g3 -fstack-protector -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -mlongcalls -nostdlib -Wpointer-arith {compiler.warning_flags} -Wno-error=unused-function -Wno-error=unused-but-set-variable -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wno-unused-parameter -Wno-sign-compare -Wno-old-style-declaration -MMD -c
@ -35,7 +35,7 @@ compiler.S.flags=-c -g3 -x assembler-with-cpp -MMD -mlongcalls
compiler.c.elf.cmd=xtensa-esp32-elf-gcc
compiler.c.elf.flags=-nostdlib "-L{compiler.sdk.path}/lib" "-L{compiler.sdk.path}/ld" -T esp32_out.ld -T esp32.common.ld -T esp32.rom.ld -T esp32.peripherals.ld -T esp32.rom.spiram_incompatible_fns.ld -u ld_include_panic_highint_hdl -u call_user_start_cpu0 -Wl,--gc-sections -Wl,-static -Wl,--undefined=uxTopUsedPriority -u __cxa_guard_dummy -u __cxx_fatal_exception
compiler.c.elf.libs=-lgcc -lopenssl -lbtdm_app -lfatfs -lwps -lhttp_server -lcoexist -lwear_levelling -lesp_http_client -lhal -lnewlib -ldriver -lbootloader_support -lpp -lmesh -lsmartconfig -ljsmn -lwpa -lethernet -lphy -lapp_trace -lconsole -lulp -lwpa_supplicant -lfreertos -lbt -lmicro-ecc -lcxx -lxtensa-debug-module -ltcp_transport -lmdns -lvfs -lesp_ringbuf -lsoc -lcore -lsdmmc -lcoap -ltcpip_adapter -lc_nano -lesp-tls -lasio -lrtc -lspi_flash -lwpa2 -lesp32 -lapp_update -lnghttp -lspiffs -lespnow -lnvs_flash -lesp_adc_cal -llog -lsmartconfig_ack -lexpat -lm -lmqtt -lc -lheap -lmbedtls -llwip -lnet80211 -lpthread -ljson -lesp_https_ota -lstdc++
compiler.c.elf.libs=-lgcc -lopenssl -lbtdm_app -lfatfs -lwps -lcoexist -lwear_levelling -lesp_http_client -lprotobuf-c -lhal -lnewlib -ldriver -lbootloader_support -lpp -lfreemodbus -lmesh -lsmartconfig -ljsmn -lwpa -lethernet -lphy -lapp_trace -lconsole -lulp -lwpa_supplicant -lfreertos -lbt -lmicro-ecc -lcxx -lxtensa-debug-module -ltcp_transport -lmdns -lvfs -lesp_ringbuf -lsoc -lcore -lsdmmc -llibsodium -lcoap -ltcpip_adapter -lprotocomm -lesp_event -lc_nano -lesp-tls -lasio -lrtc -lspi_flash -lwpa2 -lwifi_provisioning -lesp32 -lapp_update -lnghttp -lspiffs -lunity -lesp_https_server -lespnow -lnvs_flash -lesp_adc_cal -llog -lsmartconfig_ack -lexpat -lm -lmqtt -lc -lheap -lmbedtls -llwip -lnet80211 -lesp_http_server -lpthread -ljson -lesp_https_ota -lstdc++
compiler.as.cmd=xtensa-esp32-elf-as

40
tools/esptool.py
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@ -51,7 +51,7 @@ except TypeError:
pass # __doc__ returns None for pyserial
__version__ = "2.5.0"
__version__ = "2.6-beta1"
MAX_UINT32 = 0xffffffff
MAX_UINT24 = 0xffffff
@ -243,17 +243,19 @@ class ESPLoader(object):
"""
detect_port = ESPLoader(port, baud, trace_enabled=trace_enabled)
detect_port.connect(connect_mode)
print('Detecting chip type...', end='')
sys.stdout.flush()
date_reg = detect_port.read_reg(ESPLoader.UART_DATA_REG_ADDR)
try:
print('Detecting chip type...', end='')
sys.stdout.flush()
date_reg = detect_port.read_reg(ESPLoader.UART_DATA_REG_ADDR)
for cls in [ESP8266ROM, ESP32ROM]:
if date_reg == cls.DATE_REG_VALUE:
# don't connect a second time
inst = cls(detect_port._port, baud, trace_enabled=trace_enabled)
print(' %s' % inst.CHIP_NAME)
return inst
print('')
for cls in [ESP8266ROM, ESP32ROM]:
if date_reg == cls.DATE_REG_VALUE:
# don't connect a second time
inst = cls(detect_port._port, baud, trace_enabled=trace_enabled)
print(' %s' % inst.CHIP_NAME, end='')
return inst
finally:
print('') # end line
raise FatalError("Unexpected UART datecode value 0x%08x. Failed to autodetect chip type." % date_reg)
""" Read a SLIP packet from the serial port """
@ -681,6 +683,8 @@ class ESPLoader(object):
while len(data) < length:
p = self.read()
data += p
if len(data) < length and len(p) < self.FLASH_SECTOR_SIZE:
raise FatalError('Corrupt data, expected 0x%x bytes but received 0x%x bytes' % (self.FLASH_SECTOR_SIZE, len(p)))
self.write(struct.pack('<I', len(data)))
if progress_fn and (len(data) % 1024 == 0 or len(data) == length):
progress_fn(len(data), length)
@ -1116,6 +1120,18 @@ class ESP32ROM(ESPLoader):
if adc_vref:
features += ["VRef calibration in efuse"]
blk3_part_res = word3 >> 14 & 0x1
if blk3_part_res:
features += ["BLK3 partially reserved"]
word6 = self.read_efuse(6)
coding_scheme = word6 & 0x3
features += ["Coding Scheme %s" % {
0: "None",
1: "3/4",
2: "Repeat (UNSUPPORTED)",
3: "Invalid"}[coding_scheme]]
return features
def read_efuse(self, n):
@ -2549,7 +2565,7 @@ def main():
esp = chip_class(each_port, initial_baud, args.trace)
esp.connect(args.before)
break
except FatalError as err:
except (FatalError, OSError) as err:
if args.port is not None:
raise
print("%s failed to connect: %s" % (each_port, err))

4
tools/gen_esp32part.py
View File

@ -21,6 +21,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import print_function, division
from __future__ import unicode_literals
import argparse
import os
import re
@ -54,6 +55,7 @@ SUBTYPES = {
"phy" : 0x01,
"nvs" : 0x02,
"coredump" : 0x03,
"nvs_keys" : 0x04,
"esphttpd" : 0x80,
"fat" : 0x81,
"spiffs" : 0x82,
@ -354,7 +356,7 @@ class PartitionDefinition(object):
if self.name in all_subtype_names and SUBTYPES.get(self.type, {}).get(self.name, "") != self.subtype:
critical("WARNING: Partition has name '%s' which is a partition subtype, but this partition has non-matching type 0x%x and subtype 0x%x. Mistake in partition table?" % (self.name, self.type, self.subtype))
STRUCT_FORMAT = "<2sBBLL16sL"
STRUCT_FORMAT = b"<2sBBLL16sL"
@classmethod
def from_binary(cls, b):

79
tools/platformio-build.py
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@ -96,52 +96,61 @@ env.Append(
],
CPPPATH=[
join(FRAMEWORK_DIR, "tools", "sdk", "include", "config"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "bluedroid"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "bluedroid", "api"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "config"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "app_trace"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "app_update"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "asio"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "bootloader_support"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "bt"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "driver"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "esp32"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "esp_adc_cal"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "esp_http_client"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "esp_https_ota"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "esp-mqtt"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "esp-tls"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "ethernet"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "fatfs"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "freertos"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "heap"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "http_server"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "jsmn"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "log"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "mdns"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "mbedtls"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "mbedtls_port"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "newlib"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "nvs_flash"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "openssl"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "spi_flash"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "sdmmc"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "smartconfig_ack"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "spiffs"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "tcpip_adapter"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "tcp_transport"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "ulp"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "vfs"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "wear_levelling"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "xtensa-debug-module"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "lwip"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "coap"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "console"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "driver"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "esp-tls"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "esp32"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "esp_adc_cal"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "esp_event"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "esp_http_client"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "esp_http_server"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "esp_https_ota"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "esp_https_server"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "esp_ringbuf"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "ethernet"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "expat"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "fatfs"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "freemodbus"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "freertos"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "heap"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "idf_test"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "jsmn"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "json"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "libsodium"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "log"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "lwip"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "mbedtls"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "mdns"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "micro-ecc"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "mqtt"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "newlib"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "nghttp"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "nvs_flash"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "openssl"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "protobuf-c"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "protocomm"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "pthread"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "sdmmc"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "smartconfig_ack"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "soc"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "spi_flash"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "spiffs"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "tcp_transport"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "tcpip_adapter"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "ulp"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "unity"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "vfs"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "wear_levelling"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "wifi_provisioning"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "wpa_supplicant"),
join(FRAMEWORK_DIR, "tools", "sdk", "include", "xtensa-debug-module"),
join(FRAMEWORK_DIR, "cores", env.BoardConfig().get("build.core"))
],
@ -151,7 +160,7 @@ env.Append(
],
LIBS=[
"gcc", "openssl", "btdm_app", "fatfs", "wps", "http_server", "coexist", "wear_levelling", "esp_http_client", "hal", "newlib", "driver", "bootloader_support", "pp", "mesh", "smartconfig", "jsmn", "wpa", "ethernet", "phy", "app_trace", "console", "ulp", "wpa_supplicant", "freertos", "bt", "micro-ecc", "cxx", "xtensa-debug-module", "tcp_transport", "mdns", "vfs", "esp_ringbuf", "soc", "core", "sdmmc", "coap", "tcpip_adapter", "c_nano", "esp-tls", "asio", "rtc", "spi_flash", "wpa2", "esp32", "app_update", "nghttp", "spiffs", "espnow", "nvs_flash", "esp_adc_cal", "log", "smartconfig_ack", "expat", "m", "mqtt", "c", "heap", "mbedtls", "lwip", "net80211", "pthread", "json", "esp_https_ota", "stdc++"
"-lgcc", "-lopenssl", "-lbtdm_app", "-lfatfs", "-lwps", "-lcoexist", "-lwear_levelling", "-lesp_http_client", "-lprotobuf-c", "-lhal", "-lnewlib", "-ldriver", "-lbootloader_support", "-lpp", "-lfreemodbus", "-lmesh", "-lsmartconfig", "-ljsmn", "-lwpa", "-lethernet", "-lphy", "-lapp_trace", "-lconsole", "-lulp", "-lwpa_supplicant", "-lfreertos", "-lbt", "-lmicro-ecc", "-lcxx", "-lxtensa-debug-module", "-ltcp_transport", "-lmdns", "-lvfs", "-lesp_ringbuf", "-lsoc", "-lcore", "-lsdmmc", "-llibsodium", "-lcoap", "-ltcpip_adapter", "-lprotocomm", "-lesp_event", "-lc_nano", "-lesp-tls", "-lasio", "-lrtc", "-lspi_flash", "-lwpa2", "-lwifi_provisioning", "-lesp32", "-lapp_update", "-lnghttp", "-lspiffs", "-lunity", "-lesp_https_server", "-lespnow", "-lnvs_flash", "-lesp_adc_cal", "-llog", "-lsmartconfig_ack", "-lexpat", "-lm", "-lmqtt", "-lc", "-lheap", "-lmbedtls", "-llwip", "-lnet80211", "-lesp_http_server", "-lpthread", "-ljson", "-lesp_https_ota", "-lstdc++"
],
LIBSOURCE_DIRS=[

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tools/sdk/include/app_trace/esp_app_trace.h Normal file
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@ -0,0 +1,265 @@
// Copyright 2017 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef ESP_APP_TRACE_H_
#define ESP_APP_TRACE_H_
#include <stdarg.h>
#include "esp_err.h"
#include "esp_app_trace_util.h" // ESP_APPTRACE_TMO_INFINITE
/**
* Application trace data destinations bits.
*/
typedef enum {
ESP_APPTRACE_DEST_TRAX = 0x1, ///< JTAG destination
ESP_APPTRACE_DEST_UART0 = 0x2, ///< UART destination
} esp_apptrace_dest_t;
/**
* @brief Initializes application tracing module.
*
* @note Should be called before any esp_apptrace_xxx call.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_init();
/**
* @brief Configures down buffer.
* @note Needs to be called before initiating any data transfer using esp_apptrace_buffer_get and esp_apptrace_write.
* This function does not protect internal data by lock.
*
* @param buf Address of buffer to use for down channel (host to target) data.
* @param size Size of the buffer.
*/
void esp_apptrace_down_buffer_config(uint8_t *buf, uint32_t size);
/**
* @brief Allocates buffer for trace data.
* After data in buffer are ready to be sent off esp_apptrace_buffer_put must be called to indicate it.
*
* @param dest Indicates HW interface to send data.
* @param size Size of data to write to trace buffer.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
*
* @return non-NULL on success, otherwise NULL.
*/
uint8_t *esp_apptrace_buffer_get(esp_apptrace_dest_t dest, uint32_t size, uint32_t tmo);
/**
* @brief Indicates that the data in buffer are ready to be sent off.
* This function is a counterpart of and must be preceeded by esp_apptrace_buffer_get.
*
* @param dest Indicates HW interface to send data. Should be identical to the same parameter in call to esp_apptrace_buffer_get.
* @param ptr Address of trace buffer to release. Should be the value returned by call to esp_apptrace_buffer_get.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_buffer_put(esp_apptrace_dest_t dest, uint8_t *ptr, uint32_t tmo);
/**
* @brief Writes data to trace buffer.
*
* @param dest Indicates HW interface to send data.
* @param data Address of data to write to trace buffer.
* @param size Size of data to write to trace buffer.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_write(esp_apptrace_dest_t dest, const void *data, uint32_t size, uint32_t tmo);
/**
* @brief vprintf-like function to sent log messages to host via specified HW interface.
*
* @param dest Indicates HW interface to send data.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
* @param fmt Address of format string.
* @param ap List of arguments.
*
* @return Number of bytes written.
*/
int esp_apptrace_vprintf_to(esp_apptrace_dest_t dest, uint32_t tmo, const char *fmt, va_list ap);
/**
* @brief vprintf-like function to sent log messages to host.
*
* @param fmt Address of format string.
* @param ap List of arguments.
*
* @return Number of bytes written.
*/
int esp_apptrace_vprintf(const char *fmt, va_list ap);
/**
* @brief Flushes remaining data in trace buffer to host.
*
* @param dest Indicates HW interface to flush data on.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_flush(esp_apptrace_dest_t dest, uint32_t tmo);
/**
* @brief Flushes remaining data in trace buffer to host without locking internal data.
* This is special version of esp_apptrace_flush which should be called from panic handler.
*
* @param dest Indicates HW interface to flush data on.
* @param min_sz Threshold for flushing data. If current filling level is above this value, data will be flushed. TRAX destinations only.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_flush_nolock(esp_apptrace_dest_t dest, uint32_t min_sz, uint32_t tmo);
/**
* @brief Reads host data from trace buffer.
*
* @param dest Indicates HW interface to read the data on.
* @param data Address of buffer to put data from trace buffer.
* @param size Pointer to store size of read data. Before call to this function pointed memory must hold requested size of data
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_read(esp_apptrace_dest_t dest, void *data, uint32_t *size, uint32_t tmo);
/**
* @brief Rertrieves incoming data buffer if any.
* After data in buffer are processed esp_apptrace_down_buffer_put must be called to indicate it.
*
* @param dest Indicates HW interface to receive data.
* @param size Address to store size of available data in down buffer. Must be initializaed with requested value.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
*
* @return non-NULL on success, otherwise NULL.
*/
uint8_t *esp_apptrace_down_buffer_get(esp_apptrace_dest_t dest, uint32_t *size, uint32_t tmo);
/**
* @brief Indicates that the data in down buffer are processesd.
* This function is a counterpart of and must be preceeded by esp_apptrace_down_buffer_get.
*
* @param dest Indicates HW interface to receive data. Should be identical to the same parameter in call to esp_apptrace_down_buffer_get.
* @param ptr Address of trace buffer to release. Should be the value returned by call to esp_apptrace_down_buffer_get.
* @param tmo Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
esp_err_t esp_apptrace_down_buffer_put(esp_apptrace_dest_t dest, uint8_t *ptr, uint32_t tmo);
/**
* @brief Checks whether host is connected.
*
* @param dest Indicates HW interface to use.
*
* @return true if host is connected, otherwise false
*/
bool esp_apptrace_host_is_connected(esp_apptrace_dest_t dest);
/**
* @brief Opens file on host.
* This function has the same semantic as 'fopen' except for the first argument.
*
* @param dest Indicates HW interface to use.
* @param path Path to file.
* @param mode Mode string. See fopen for details.
*
* @return non zero file handle on success, otherwise 0
*/
void *esp_apptrace_fopen(esp_apptrace_dest_t dest, const char *path, const char *mode);
/**
* @brief Closes file on host.
* This function has the same semantic as 'fclose' except for the first argument.
*
* @param dest Indicates HW interface to use.
* @param stream File handle returned by esp_apptrace_fopen.
*
* @return Zero on success, otherwise non-zero. See fclose for details.
*/
int esp_apptrace_fclose(esp_apptrace_dest_t dest, void *stream);
/**
* @brief Writes to file on host.
* This function has the same semantic as 'fwrite' except for the first argument.
*
* @param dest Indicates HW interface to use.
* @param ptr Address of data to write.
* @param size Size of an item.
* @param nmemb Number of items to write.
* @param stream File handle returned by esp_apptrace_fopen.
*
* @return Number of written items. See fwrite for details.
*/
size_t esp_apptrace_fwrite(esp_apptrace_dest_t dest, const void *ptr, size_t size, size_t nmemb, void *stream);
/**
* @brief Read file on host.
* This function has the same semantic as 'fread' except for the first argument.
*
* @param dest Indicates HW interface to use.
* @param ptr Address to store read data.
* @param size Size of an item.
* @param nmemb Number of items to read.
* @param stream File handle returned by esp_apptrace_fopen.
*
* @return Number of read items. See fread for details.
*/
size_t esp_apptrace_fread(esp_apptrace_dest_t dest, void *ptr, size_t size, size_t nmemb, void *stream);
/**
* @brief Set position indicator in file on host.
* This function has the same semantic as 'fseek' except for the first argument.
*
* @param dest Indicates HW interface to use.
* @param stream File handle returned by esp_apptrace_fopen.
* @param offset Offset. See fseek for details.
* @param whence Position in file. See fseek for details.
*
* @return Zero on success, otherwise non-zero. See fseek for details.
*/
int esp_apptrace_fseek(esp_apptrace_dest_t dest, void *stream, long offset, int whence);
/**
* @brief Get current position indicator for file on host.
* This function has the same semantic as 'ftell' except for the first argument.
*
* @param dest Indicates HW interface to use.
* @param stream File handle returned by esp_apptrace_fopen.
*
* @return Current position in file. See ftell for details.
*/
int esp_apptrace_ftell(esp_apptrace_dest_t dest, void *stream);
/**
* @brief Indicates to the host that all file operations are completed.
* This function should be called after all file operations are finished and
* indicate to the host that it can perform cleanup operations (close open files etc.).
*
* @param dest Indicates HW interface to use.
*
* @return ESP_OK on success, otherwise see esp_err_t
*/
int esp_apptrace_fstop(esp_apptrace_dest_t dest);
/**
* @brief Triggers gcov info dump.
* This function waits for the host to connect to target before dumping data.
*/
void esp_gcov_dump(void);
#endif

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// Copyright 2017 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef ESP_APP_TRACE_UTIL_H_
#define ESP_APP_TRACE_UTIL_H_
#include "freertos/FreeRTOS.h"
#include "esp_err.h"
/** Infinite waiting timeout */
#define ESP_APPTRACE_TMO_INFINITE ((uint32_t)-1)
/** Structure which holds data necessary for measuring time intervals.
*
* After initialization via esp_apptrace_tmo_init() user needs to call esp_apptrace_tmo_check()
* periodically to check timeout for expiration.
*/
typedef struct {
uint32_t start; ///< time interval start (in CPU ticks)
uint32_t tmo; ///< timeout value (in us)
uint32_t elapsed; ///< elapsed time (in us)
} esp_apptrace_tmo_t;
/**
* @brief Initializes timeout structure.
*
* @param tmo Pointer to timeout structure to be initialized.
* @param user_tmo Timeout value (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinetly.
*/
static inline void esp_apptrace_tmo_init(esp_apptrace_tmo_t *tmo, uint32_t user_tmo)
{
tmo->start = portGET_RUN_TIME_COUNTER_VALUE();
tmo->tmo = user_tmo;
tmo->elapsed = 0;
}
/**
* @brief Checks timeout for expiration.
*
* @param tmo Pointer to timeout structure to be initialized.
*
* @return ESP_OK on success, otherwise \see esp_err_t
*/
esp_err_t esp_apptrace_tmo_check(esp_apptrace_tmo_t *tmo);
static inline uint32_t esp_apptrace_tmo_remaining_us(esp_apptrace_tmo_t *tmo)
{
return tmo->tmo != ESP_APPTRACE_TMO_INFINITE ? (tmo->elapsed - tmo->tmo) : ESP_APPTRACE_TMO_INFINITE;
}
/** Tracing module synchronization lock */
typedef struct {
portMUX_TYPE mux;
unsigned int_state;
} esp_apptrace_lock_t;
/**
* @brief Initializes lock structure.
*
* @param lock Pointer to lock structure to be initialized.
*/
static inline void esp_apptrace_lock_init(esp_apptrace_lock_t *lock)
{
vPortCPUInitializeMutex(&lock->mux);
lock->int_state = 0;
}
/**
* @brief Tries to acquire lock in specified time period.
*
* @param lock Pointer to lock structure.
* @param tmo Pointer to timeout struct.
*
* @return ESP_OK on success, otherwise \see esp_err_t
*/
esp_err_t esp_apptrace_lock_take(esp_apptrace_lock_t *lock, esp_apptrace_tmo_t *tmo);
/**
* @brief Releases lock.
*
* @param lock Pointer to lock structure.
*
* @return ESP_OK on success, otherwise \see esp_err_t
*/
esp_err_t esp_apptrace_lock_give(esp_apptrace_lock_t *lock);
/** Ring buffer control structure.
*
* @note For purposes of application tracing module if there is no enough space for user data and write pointer can be wrapped
* current ring buffer size can be temporarily shrinked in order to provide buffer with requested size.
*/
typedef struct {
uint8_t *data; ///< pointer to data storage
volatile uint32_t size; ///< size of data storage
volatile uint32_t cur_size; ///< current size of data storage
volatile uint32_t rd; ///< read pointer
volatile uint32_t wr; ///< write pointer
} esp_apptrace_rb_t;
/**
* @brief Initializes ring buffer control structure.
*
* @param rb Pointer to ring buffer structure to be initialized.
* @param data Pointer to buffer to be used as ring buffer's data storage.
* @param size Size of buffer to be used as ring buffer's data storage.
*/
static inline void esp_apptrace_rb_init(esp_apptrace_rb_t *rb, uint8_t *data, uint32_t size)
{
rb->data = data;
rb->size = rb->cur_size = size;
rb->rd = 0;
rb->wr = 0;
}
/**
* @brief Allocates memory chunk in ring buffer.
*
* @param rb Pointer to ring buffer structure.
* @param size Size of the memory to allocate.
*
* @return Pointer to the allocated memory or NULL in case of failure.
*/
uint8_t *esp_apptrace_rb_produce(esp_apptrace_rb_t *rb, uint32_t size);
/**
* @brief Consumes memory chunk in ring buffer.
*
* @param rb Pointer to ring buffer structure.
* @param size Size of the memory to consume.
*
* @return Pointer to consumed memory chunk or NULL in case of failure.
*/
uint8_t *esp_apptrace_rb_consume(esp_apptrace_rb_t *rb, uint32_t size);
/**
* @brief Gets size of memory which can consumed with single call to esp_apptrace_rb_consume().
*
* @param rb Pointer to ring buffer structure.
*
* @return Size of memory which can consumed.
*
* @note Due to read pointer wrapping returned size can be less then the total size of available data.
*/
uint32_t esp_apptrace_rb_read_size_get(esp_apptrace_rb_t *rb);
/**
* @brief Gets size of memory which can produced with single call to esp_apptrace_rb_produce().
*
* @param rb Pointer to ring buffer structure.
*
* @return Size of memory which can produced.
*
* @note Due to write pointer wrapping returned size can be less then the total size of available data.
*/
uint32_t esp_apptrace_rb_write_size_get(esp_apptrace_rb_t *rb);
#endif //ESP_APP_TRACE_UTIL_H_

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef _OTA_OPS_H
#define _OTA_OPS_H
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
#include "esp_err.h"
#include "esp_partition.h"
#ifdef __cplusplus
extern "C"
{
#endif
#define OTA_SIZE_UNKNOWN 0xffffffff /*!< Used for esp_ota_begin() if new image size is unknown */
#define ESP_ERR_OTA_BASE 0x1500 /*!< Base error code for ota_ops api */
#define ESP_ERR_OTA_PARTITION_CONFLICT (ESP_ERR_OTA_BASE + 0x01) /*!< Error if request was to write or erase the current running partition */
#define ESP_ERR_OTA_SELECT_INFO_INVALID (ESP_ERR_OTA_BASE + 0x02) /*!< Error if OTA data partition contains invalid content */
#define ESP_ERR_OTA_VALIDATE_FAILED (ESP_ERR_OTA_BASE + 0x03) /*!< Error if OTA app image is invalid */
/**
* @brief Opaque handle for an application OTA update
*
* esp_ota_begin() returns a handle which is then used for subsequent
* calls to esp_ota_write() and esp_ota_end().
*/
typedef uint32_t esp_ota_handle_t;
/**
* @brief Commence an OTA update writing to the specified partition.
* The specified partition is erased to the specified image size.
*
* If image size is not yet known, pass OTA_SIZE_UNKNOWN which will
* cause the entire partition to be erased.
*
* On success, this function allocates memory that remains in use
* until esp_ota_end() is called with the returned handle.
*
* @param partition Pointer to info for partition which will receive the OTA update. Required.
* @param image_size Size of new OTA app image. Partition will be erased in order to receive this size of image. If 0 or OTA_SIZE_UNKNOWN, the entire partition is erased.
* @param out_handle On success, returns a handle which should be used for subsequent esp_ota_write() and esp_ota_end() calls.
* @return
* - ESP_OK: OTA operation commenced successfully.
* - ESP_ERR_INVALID_ARG: partition or out_handle arguments were NULL, or partition doesn't point to an OTA app partition.
* - ESP_ERR_NO_MEM: Cannot allocate memory for OTA operation.
* - ESP_ERR_OTA_PARTITION_CONFLICT: Partition holds the currently running firmware, cannot update in place.
* - ESP_ERR_NOT_FOUND: Partition argument not found in partition table.
* - ESP_ERR_OTA_SELECT_INFO_INVALID: The OTA data partition contains invalid data.
* - ESP_ERR_INVALID_SIZE: Partition doesn't fit in configured flash size.
* - ESP_ERR_FLASH_OP_TIMEOUT or ESP_ERR_FLASH_OP_FAIL: Flash write failed.
*/
esp_err_t esp_ota_begin(const esp_partition_t* partition, size_t image_size, esp_ota_handle_t* out_handle);
/**
* @brief Write OTA update data to partition
*
* This function can be called multiple times as
* data is received during the OTA operation. Data is written
* sequentially to the partition.
*
* @param handle Handle obtained from esp_ota_begin
* @param data Data buffer to write
* @param size Size of data buffer in bytes.
*
* @return
* - ESP_OK: Data was written to flash successfully.
* - ESP_ERR_INVALID_ARG: handle is invalid.
* - ESP_ERR_OTA_VALIDATE_FAILED: First byte of image contains invalid app image magic byte.
* - ESP_ERR_FLASH_OP_TIMEOUT or ESP_ERR_FLASH_OP_FAIL: Flash write failed.
* - ESP_ERR_OTA_SELECT_INFO_INVALID: OTA data partition has invalid contents
*/
esp_err_t esp_ota_write(esp_ota_handle_t handle, const void* data, size_t size);
/**
* @brief Finish OTA update and validate newly written app image.
*
* @param handle Handle obtained from esp_ota_begin().
*
* @note After calling esp_ota_end(), the handle is no longer valid and any memory associated with it is freed (regardless of result).
*
* @return
* - ESP_OK: Newly written OTA app image is valid.
* - ESP_ERR_NOT_FOUND: OTA handle was not found.
* - ESP_ERR_INVALID_ARG: Handle was never written to.
* - ESP_ERR_OTA_VALIDATE_FAILED: OTA image is invalid (either not a valid app image, or - if secure boot is enabled - signature failed to verify.)
* - ESP_ERR_INVALID_STATE: If flash encryption is enabled, this result indicates an internal error writing the final encrypted bytes to flash.
*/
esp_err_t esp_ota_end(esp_ota_handle_t handle);
/**
* @brief Configure OTA data for a new boot partition
*
* @note If this function returns ESP_OK, calling esp_restart() will boot the newly configured app partition.
*
* @param partition Pointer to info for partition containing app image to boot.
*
* @return
* - ESP_OK: OTA data updated, next reboot will use specified partition.
* - ESP_ERR_INVALID_ARG: partition argument was NULL or didn't point to a valid OTA partition of type "app".
* - ESP_ERR_OTA_VALIDATE_FAILED: Partition contained invalid app image. Also returned if secure boot is enabled and signature validation failed.
* - ESP_ERR_NOT_FOUND: OTA data partition not found.
* - ESP_ERR_FLASH_OP_TIMEOUT or ESP_ERR_FLASH_OP_FAIL: Flash erase or write failed.
*/
esp_err_t esp_ota_set_boot_partition(const esp_partition_t* partition);
/**
* @brief Get partition info of currently configured boot app
*
* If esp_ota_set_boot_partition() has been called, the partition which was set by that function will be returned.
*
* If esp_ota_set_boot_partition() has not been called, the result is usually the same as esp_ota_get_running_partition().
* The two results are not equal if the configured boot partition does not contain a valid app (meaning that the running partition
* will be an app that the bootloader chose via fallback).
*
* If the OTA data partition is not present or not valid then the result is the first app partition found in the
* partition table. In priority order, this means: the factory app, the first OTA app slot, or the test app partition.
*
* Note that there is no guarantee the returned partition is a valid app. Use esp_image_verify(ESP_IMAGE_VERIFY, ...) to verify if the
* returned partition contains a bootable image.
*
* @return Pointer to info for partition structure, or NULL if partition table is invalid or a flash read operation failed. Any returned pointer is valid for the lifetime of the application.
*/
const esp_partition_t* esp_ota_get_boot_partition(void);
/**
* @brief Get partition info of currently running app
*
* This function is different to esp_ota_get_boot_partition() in that
* it ignores any change of selected boot partition caused by
* esp_ota_set_boot_partition(). Only the app whose code is currently
* running will have its partition information returned.
*
* The partition returned by this function may also differ from esp_ota_get_boot_partition() if the configured boot
* partition is somehow invalid, and the bootloader fell back to a different app partition at boot.
*
* @return Pointer to info for partition structure, or NULL if no partition is found or flash read operation failed. Returned pointer is valid for the lifetime of the application.
*/
const esp_partition_t* esp_ota_get_running_partition(void);
/**
* @brief Return the next OTA app partition which should be written with a new firmware.
*
* Call this function to find an OTA app partition which can be passed to esp_ota_begin().
*
* Finds next partition round-robin, starting from the current running partition.
*
* @param start_from If set, treat this partition info as describing the current running partition. Can be NULL, in which case esp_ota_get_running_partition() is used to find the currently running partition. The result of this function is never the same as this argument.
*
* @return Pointer to info for partition which should be updated next. NULL result indicates invalid OTA data partition, or that no eligible OTA app slot partition was found.
*
*/
const esp_partition_t* esp_ota_get_next_update_partition(const esp_partition_t *start_from);
#ifdef __cplusplus
}
#endif
#endif /* OTA_OPS_H */

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//
// asio.hpp
// ~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_HPP
#define ASIO_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#if defined(ESP_PLATFORM)
# include "esp_asio_config.h"
#endif // defined(ESP_PLATFORM)
#include "asio/associated_allocator.hpp"
#include "asio/associated_executor.hpp"
#include "asio/async_result.hpp"
#include "asio/basic_datagram_socket.hpp"
#include "asio/basic_deadline_timer.hpp"
#include "asio/basic_io_object.hpp"
#include "asio/basic_raw_socket.hpp"
#include "asio/basic_seq_packet_socket.hpp"
#include "asio/basic_serial_port.hpp"
#include "asio/basic_signal_set.hpp"
#include "asio/basic_socket_acceptor.hpp"
#include "asio/basic_socket_iostream.hpp"
#include "asio/basic_socket_streambuf.hpp"
#include "asio/basic_stream_socket.hpp"
#include "asio/basic_streambuf.hpp"
#include "asio/basic_waitable_timer.hpp"
#include "asio/bind_executor.hpp"
#include "asio/buffer.hpp"
#include "asio/buffered_read_stream_fwd.hpp"
#include "asio/buffered_read_stream.hpp"
#include "asio/buffered_stream_fwd.hpp"
#include "asio/buffered_stream.hpp"
#include "asio/buffered_write_stream_fwd.hpp"
#include "asio/buffered_write_stream.hpp"
#include "asio/buffers_iterator.hpp"
#include "asio/completion_condition.hpp"
#include "asio/connect.hpp"
#include "asio/coroutine.hpp"
#include "asio/datagram_socket_service.hpp"
#include "asio/deadline_timer_service.hpp"
#include "asio/deadline_timer.hpp"
#include "asio/defer.hpp"
#include "asio/dispatch.hpp"
#include "asio/error.hpp"
#include "asio/error_code.hpp"
#include "asio/execution_context.hpp"
#include "asio/executor.hpp"
#include "asio/executor_work_guard.hpp"
#include "asio/generic/basic_endpoint.hpp"
#include "asio/generic/datagram_protocol.hpp"
#include "asio/generic/raw_protocol.hpp"
#include "asio/generic/seq_packet_protocol.hpp"
#include "asio/generic/stream_protocol.hpp"
#include "asio/handler_alloc_hook.hpp"
#include "asio/handler_continuation_hook.hpp"
#include "asio/handler_invoke_hook.hpp"
#include "asio/handler_type.hpp"
#include "asio/high_resolution_timer.hpp"
#include "asio/io_context.hpp"
#include "asio/io_context_strand.hpp"
#include "asio/io_service.hpp"
#include "asio/io_service_strand.hpp"
#include "asio/ip/address.hpp"
#include "asio/ip/address_v4.hpp"
#include "asio/ip/address_v4_iterator.hpp"
#include "asio/ip/address_v4_range.hpp"
#include "asio/ip/address_v6.hpp"
#include "asio/ip/address_v6_iterator.hpp"
#include "asio/ip/address_v6_range.hpp"
#include "asio/ip/bad_address_cast.hpp"
#include "asio/ip/basic_endpoint.hpp"
#include "asio/ip/basic_resolver.hpp"
#include "asio/ip/basic_resolver_entry.hpp"
#include "asio/ip/basic_resolver_iterator.hpp"
#include "asio/ip/basic_resolver_query.hpp"
#include "asio/ip/host_name.hpp"
#include "asio/ip/icmp.hpp"
#include "asio/ip/multicast.hpp"
#include "asio/ip/resolver_base.hpp"
#include "asio/ip/resolver_query_base.hpp"
#include "asio/ip/resolver_service.hpp"
#include "asio/ip/tcp.hpp"
#include "asio/ip/udp.hpp"
#include "asio/ip/unicast.hpp"
#include "asio/ip/v6_only.hpp"
#include "asio/is_executor.hpp"
#include "asio/is_read_buffered.hpp"
#include "asio/is_write_buffered.hpp"
#include "asio/local/basic_endpoint.hpp"
#include "asio/local/connect_pair.hpp"
#include "asio/local/datagram_protocol.hpp"
#include "asio/local/stream_protocol.hpp"
#include "asio/packaged_task.hpp"
#include "asio/placeholders.hpp"
#include "asio/posix/basic_descriptor.hpp"
#include "asio/posix/basic_stream_descriptor.hpp"
#include "asio/posix/descriptor.hpp"
#include "asio/posix/descriptor_base.hpp"
#include "asio/posix/stream_descriptor.hpp"
#include "asio/posix/stream_descriptor_service.hpp"
#include "asio/post.hpp"
#include "asio/raw_socket_service.hpp"
#include "asio/read.hpp"
#include "asio/read_at.hpp"
#include "asio/read_until.hpp"
#include "asio/seq_packet_socket_service.hpp"
#include "asio/serial_port.hpp"
#include "asio/serial_port_base.hpp"
#include "asio/serial_port_service.hpp"
#include "asio/signal_set.hpp"
#include "asio/signal_set_service.hpp"
#include "asio/socket_acceptor_service.hpp"
#include "asio/socket_base.hpp"
#include "asio/steady_timer.hpp"
#include "asio/strand.hpp"
#include "asio/stream_socket_service.hpp"
#include "asio/streambuf.hpp"
#include "asio/system_context.hpp"
#include "asio/system_error.hpp"
#include "asio/system_executor.hpp"
#include "asio/system_timer.hpp"
#include "asio/thread.hpp"
#include "asio/thread_pool.hpp"
#include "asio/time_traits.hpp"
#include "asio/use_future.hpp"
#include "asio/uses_executor.hpp"
#include "asio/version.hpp"
#include "asio/wait_traits.hpp"
#include "asio/waitable_timer_service.hpp"
#include "asio/windows/basic_handle.hpp"
#include "asio/windows/basic_object_handle.hpp"
#include "asio/windows/basic_random_access_handle.hpp"
#include "asio/windows/basic_stream_handle.hpp"
#include "asio/windows/object_handle.hpp"
#include "asio/windows/object_handle_service.hpp"
#include "asio/windows/overlapped_handle.hpp"
#include "asio/windows/overlapped_ptr.hpp"
#include "asio/windows/random_access_handle.hpp"
#include "asio/windows/random_access_handle_service.hpp"
#include "asio/windows/stream_handle.hpp"
#include "asio/windows/stream_handle_service.hpp"
#include "asio/write.hpp"
#include "asio/write_at.hpp"
#endif // ASIO_HPP

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//
// associated_allocator.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_ASSOCIATED_ALLOCATOR_HPP
#define ASIO_ASSOCIATED_ALLOCATOR_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <memory>
#include "asio/detail/type_traits.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
template <typename>
struct associated_allocator_check
{
typedef void type;
};
template <typename T, typename E, typename = void>
struct associated_allocator_impl
{
typedef E type;
static type get(const T&, const E& e) ASIO_NOEXCEPT
{
return e;
}
};
template <typename T, typename E>
struct associated_allocator_impl<T, E,
typename associated_allocator_check<typename T::allocator_type>::type>
{
typedef typename T::allocator_type type;
static type get(const T& t, const E&) ASIO_NOEXCEPT
{
return t.get_allocator();
}
};
} // namespace detail
/// Traits type used to obtain the allocator associated with an object.
/**
* A program may specialise this traits type if the @c T template parameter in
* the specialisation is a user-defined type. The template parameter @c
* Allocator shall be a type meeting the Allocator requirements.
*
* Specialisations shall meet the following requirements, where @c t is a const
* reference to an object of type @c T, and @c a is an object of type @c
* Allocator.
*
* @li Provide a nested typedef @c type that identifies a type meeting the
* Allocator requirements.
*
* @li Provide a noexcept static member function named @c get, callable as @c
* get(t) and with return type @c type.
*
* @li Provide a noexcept static member function named @c get, callable as @c
* get(t,a) and with return type @c type.
*/
template <typename T, typename Allocator = std::allocator<void> >
struct associated_allocator
{
/// If @c T has a nested type @c allocator_type, <tt>T::allocator_type</tt>.
/// Otherwise @c Allocator.
#if defined(GENERATING_DOCUMENTATION)
typedef see_below type;
#else // defined(GENERATING_DOCUMENTATION)
typedef typename detail::associated_allocator_impl<T, Allocator>::type type;
#endif // defined(GENERATING_DOCUMENTATION)
/// If @c T has a nested type @c allocator_type, returns
/// <tt>t.get_allocator()</tt>. Otherwise returns @c a.
static type get(const T& t,
const Allocator& a = Allocator()) ASIO_NOEXCEPT
{
return detail::associated_allocator_impl<T, Allocator>::get(t, a);
}
};
/// Helper function to obtain an object's associated allocator.
/**
* @returns <tt>associated_allocator<T>::get(t)</tt>
*/
template <typename T>
inline typename associated_allocator<T>::type
get_associated_allocator(const T& t) ASIO_NOEXCEPT
{
return associated_allocator<T>::get(t);
}
/// Helper function to obtain an object's associated allocator.
/**
* @returns <tt>associated_allocator<T, Allocator>::get(t, a)</tt>
*/
template <typename T, typename Allocator>
inline typename associated_allocator<T, Allocator>::type
get_associated_allocator(const T& t, const Allocator& a) ASIO_NOEXCEPT
{
return associated_allocator<T, Allocator>::get(t, a);
}
#if defined(ASIO_HAS_ALIAS_TEMPLATES)
template <typename T, typename Allocator = std::allocator<void> >
using associated_allocator_t
= typename associated_allocator<T, Allocator>::type;
#endif // defined(ASIO_HAS_ALIAS_TEMPLATES)
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_ASSOCIATED_ALLOCATOR_HPP

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//
// associated_executor.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_ASSOCIATED_EXECUTOR_HPP
#define ASIO_ASSOCIATED_EXECUTOR_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/detail/type_traits.hpp"
#include "asio/is_executor.hpp"
#include "asio/system_executor.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
template <typename>
struct associated_executor_check
{
typedef void type;
};
template <typename T, typename E, typename = void>
struct associated_executor_impl
{
typedef E type;
static type get(const T&, const E& e) ASIO_NOEXCEPT
{
return e;
}
};
template <typename T, typename E>
struct associated_executor_impl<T, E,
typename associated_executor_check<typename T::executor_type>::type>
{
typedef typename T::executor_type type;
static type get(const T& t, const E&) ASIO_NOEXCEPT
{
return t.get_executor();
}
};
} // namespace detail
/// Traits type used to obtain the executor associated with an object.
/**
* A program may specialise this traits type if the @c T template parameter in
* the specialisation is a user-defined type. The template parameter @c
* Executor shall be a type meeting the Executor requirements.
*
* Specialisations shall meet the following requirements, where @c t is a const
* reference to an object of type @c T, and @c e is an object of type @c
* Executor.
*
* @li Provide a nested typedef @c type that identifies a type meeting the
* Executor requirements.
*
* @li Provide a noexcept static member function named @c get, callable as @c
* get(t) and with return type @c type.
*
* @li Provide a noexcept static member function named @c get, callable as @c
* get(t,e) and with return type @c type.
*/
template <typename T, typename Executor = system_executor>
struct associated_executor
{
/// If @c T has a nested type @c executor_type, <tt>T::executor_type</tt>.
/// Otherwise @c Executor.
#if defined(GENERATING_DOCUMENTATION)
typedef see_below type;
#else // defined(GENERATING_DOCUMENTATION)
typedef typename detail::associated_executor_impl<T, Executor>::type type;
#endif // defined(GENERATING_DOCUMENTATION)
/// If @c T has a nested type @c executor_type, returns
/// <tt>t.get_executor()</tt>. Otherwise returns @c ex.
static type get(const T& t,
const Executor& ex = Executor()) ASIO_NOEXCEPT
{
return detail::associated_executor_impl<T, Executor>::get(t, ex);
}
};
/// Helper function to obtain an object's associated executor.
/**
* @returns <tt>associated_executor<T>::get(t)</tt>
*/
template <typename T>
inline typename associated_executor<T>::type
get_associated_executor(const T& t) ASIO_NOEXCEPT
{
return associated_executor<T>::get(t);
}
/// Helper function to obtain an object's associated executor.
/**
* @returns <tt>associated_executor<T, Executor>::get(t, ex)</tt>
*/
template <typename T, typename Executor>
inline typename associated_executor<T, Executor>::type
get_associated_executor(const T& t, const Executor& ex,
typename enable_if<is_executor<
Executor>::value>::type* = 0) ASIO_NOEXCEPT
{
return associated_executor<T, Executor>::get(t, ex);
}
/// Helper function to obtain an object's associated executor.
/**
* @returns <tt>associated_executor<T, typename
* ExecutionContext::executor_type>::get(t, ctx.get_executor())</tt>
*/
template <typename T, typename ExecutionContext>
inline typename associated_executor<T,
typename ExecutionContext::executor_type>::type
get_associated_executor(const T& t, ExecutionContext& ctx,
typename enable_if<is_convertible<ExecutionContext&,
execution_context&>::value>::type* = 0) ASIO_NOEXCEPT
{
return associated_executor<T,
typename ExecutionContext::executor_type>::get(t, ctx.get_executor());
}
#if defined(ASIO_HAS_ALIAS_TEMPLATES)
template <typename T, typename Executor = system_executor>
using associated_executor_t = typename associated_executor<T, Executor>::type;
#endif // defined(ASIO_HAS_ALIAS_TEMPLATES)
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_ASSOCIATED_EXECUTOR_HPP

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//
// async_result.hpp
// ~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_ASYNC_RESULT_HPP
#define ASIO_ASYNC_RESULT_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/detail/type_traits.hpp"
#include "asio/handler_type.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
/// An interface for customising the behaviour of an initiating function.
/**
* The async_result traits class is used for determining:
*
* @li the concrete completion handler type to be called at the end of the
* asynchronous operation;
*
* @li the initiating function return type; and
*
* @li how the return value of the initiating function is obtained.
*
* The trait allows the handler and return types to be determined at the point
* where the specific completion handler signature is known.
*
* This template may be specialised for user-defined completion token types.
* The primary template assumes that the CompletionToken is the completion
* handler.
*/
#if defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
template <typename CompletionToken, typename Signature>
#else // defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
template <typename CompletionToken, typename Signature = void>
#endif // defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
class async_result
{
public:
#if defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
/// The concrete completion handler type for the specific signature.
typedef CompletionToken completion_handler_type;
/// The return type of the initiating function.
typedef void return_type;
#else // defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
// For backward compatibility, determine the concrete completion handler type
// by using the legacy handler_type trait.
typedef typename handler_type<CompletionToken, Signature>::type
completion_handler_type;
// For backward compatibility, determine the initiating function return type
// using the legacy single-parameter version of async_result.
typedef typename async_result<completion_handler_type>::type return_type;
#endif // defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
/// Construct an async result from a given handler.
/**
* When using a specalised async_result, the constructor has an opportunity
* to initialise some state associated with the completion handler, which is
* then returned from the initiating function.
*/
explicit async_result(completion_handler_type& h)
#if defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
// No data members to initialise.
#else // defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
: legacy_result_(h)
#endif // defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
{
(void)h;
}
/// Obtain the value to be returned from the initiating function.
return_type get()
{
#if defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
// Nothing to do.
#else // defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
return legacy_result_.get();
#endif // defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
}
private:
async_result(const async_result&) ASIO_DELETED;
async_result& operator=(const async_result&) ASIO_DELETED;
#if defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
// No data members.
#else // defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
async_result<completion_handler_type> legacy_result_;
#endif // defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
};
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use two-parameter version of async_result.) An interface for
/// customising the behaviour of an initiating function.
/**
* This template may be specialised for user-defined handler types.
*/
template <typename Handler>
class async_result<Handler>
{
public:
/// The return type of the initiating function.
typedef void type;
/// Construct an async result from a given handler.
/**
* When using a specalised async_result, the constructor has an opportunity
* to initialise some state associated with the handler, which is then
* returned from the initiating function.
*/
explicit async_result(Handler&)
{
}
/// Obtain the value to be returned from the initiating function.
type get()
{
}
};
#endif // !defined(ASIO_NO_DEPRECATED)
/// Helper template to deduce the handler type from a CompletionToken, capture
/// a local copy of the handler, and then create an async_result for the
/// handler.
template <typename CompletionToken, typename Signature>
struct async_completion
{
/// The real handler type to be used for the asynchronous operation.
typedef typename asio::async_result<
typename decay<CompletionToken>::type,
Signature>::completion_handler_type completion_handler_type;
#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Constructor.
/**
* The constructor creates the concrete completion handler and makes the link
* between the handler and the asynchronous result.
*/
explicit async_completion(CompletionToken& token)
: completion_handler(static_cast<typename conditional<
is_same<CompletionToken, completion_handler_type>::value,
completion_handler_type&, CompletionToken&&>::type>(token)),
result(completion_handler)
{
}
#else // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
explicit async_completion(typename decay<CompletionToken>::type& token)
: completion_handler(token),
result(completion_handler)
{
}
explicit async_completion(const typename decay<CompletionToken>::type& token)
: completion_handler(token),
result(completion_handler)
{
}
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// A copy of, or reference to, a real handler object.
#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
typename conditional<
is_same<CompletionToken, completion_handler_type>::value,
completion_handler_type&, completion_handler_type>::type completion_handler;
#else // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
completion_handler_type completion_handler;
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// The result of the asynchronous operation's initiating function.
async_result<typename decay<CompletionToken>::type, Signature> result;
};
namespace detail {
template <typename CompletionToken, typename Signature>
struct async_result_helper
: async_result<typename decay<CompletionToken>::type, Signature>
{
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#if defined(GENERATING_DOCUMENTATION)
# define ASIO_INITFN_RESULT_TYPE(ct, sig) \
void_or_deduced
#elif defined(_MSC_VER) && (_MSC_VER < 1500)
# define ASIO_INITFN_RESULT_TYPE(ct, sig) \
typename ::asio::detail::async_result_helper< \
ct, sig>::return_type
#define ASIO_HANDLER_TYPE(ct, sig) \
typename ::asio::detail::async_result_helper< \
ct, sig>::completion_handler_type
#else
# define ASIO_INITFN_RESULT_TYPE(ct, sig) \
typename ::asio::async_result< \
typename ::asio::decay<ct>::type, sig>::return_type
#define ASIO_HANDLER_TYPE(ct, sig) \
typename ::asio::async_result< \
typename ::asio::decay<ct>::type, sig>::completion_handler_type
#endif
#endif // ASIO_ASYNC_RESULT_HPP

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//
// basic_deadline_timer.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BASIC_DEADLINE_TIMER_HPP
#define ASIO_BASIC_DEADLINE_TIMER_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_HAS_BOOST_DATE_TIME) \
|| defined(GENERATING_DOCUMENTATION)
#include <cstddef>
#include "asio/basic_io_object.hpp"
#include "asio/detail/handler_type_requirements.hpp"
#include "asio/detail/throw_error.hpp"
#include "asio/error.hpp"
#include "asio/time_traits.hpp"
#if defined(ASIO_ENABLE_OLD_SERVICES)
# include "asio/deadline_timer_service.hpp"
#else // defined(ASIO_ENABLE_OLD_SERVICES)
# include "asio/detail/deadline_timer_service.hpp"
# define ASIO_SVC_T detail::deadline_timer_service<TimeTraits>
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
#include "asio/detail/push_options.hpp"
namespace asio {
/// Provides waitable timer functionality.
/**
* The basic_deadline_timer class template provides the ability to perform a
* blocking or asynchronous wait for a timer to expire.
*
* A deadline timer is always in one of two states: "expired" or "not expired".
* If the wait() or async_wait() function is called on an expired timer, the
* wait operation will complete immediately.
*
* Most applications will use the asio::deadline_timer typedef.
*
* @par Thread Safety
* @e Distinct @e objects: Safe.@n
* @e Shared @e objects: Unsafe.
*
* @par Examples
* Performing a blocking wait:
* @code
* // Construct a timer without setting an expiry time.
* asio::deadline_timer timer(io_context);
*
* // Set an expiry time relative to now.
* timer.expires_from_now(boost::posix_time::seconds(5));
*
* // Wait for the timer to expire.
* timer.wait();
* @endcode
*
* @par
* Performing an asynchronous wait:
* @code
* void handler(const asio::error_code& error)
* {
* if (!error)
* {
* // Timer expired.
* }
* }
*
* ...
*
* // Construct a timer with an absolute expiry time.
* asio::deadline_timer timer(io_context,
* boost::posix_time::time_from_string("2005-12-07 23:59:59.000"));
*
* // Start an asynchronous wait.
* timer.async_wait(handler);
* @endcode
*
* @par Changing an active deadline_timer's expiry time
*
* Changing the expiry time of a timer while there are pending asynchronous
* waits causes those wait operations to be cancelled. To ensure that the action
* associated with the timer is performed only once, use something like this:
* used:
*
* @code
* void on_some_event()
* {
* if (my_timer.expires_from_now(seconds(5)) > 0)
* {
* // We managed to cancel the timer. Start new asynchronous wait.
* my_timer.async_wait(on_timeout);
* }
* else
* {
* // Too late, timer has already expired!
* }
* }
*
* void on_timeout(const asio::error_code& e)
* {
* if (e != asio::error::operation_aborted)
* {
* // Timer was not cancelled, take necessary action.
* }
* }
* @endcode
*
* @li The asio::basic_deadline_timer::expires_from_now() function
* cancels any pending asynchronous waits, and returns the number of
* asynchronous waits that were cancelled. If it returns 0 then you were too
* late and the wait handler has already been executed, or will soon be
* executed. If it returns 1 then the wait handler was successfully cancelled.
*
* @li If a wait handler is cancelled, the asio::error_code passed to
* it contains the value asio::error::operation_aborted.
*/
template <typename Time,
typename TimeTraits = asio::time_traits<Time>
ASIO_SVC_TPARAM_DEF2(= deadline_timer_service<Time, TimeTraits>)>
class basic_deadline_timer
: ASIO_SVC_ACCESS basic_io_object<ASIO_SVC_T>
{
public:
/// The type of the executor associated with the object.
typedef io_context::executor_type executor_type;
/// The time traits type.
typedef TimeTraits traits_type;
/// The time type.
typedef typename traits_type::time_type time_type;
/// The duration type.
typedef typename traits_type::duration_type duration_type;
/// Constructor.
/**
* This constructor creates a timer without setting an expiry time. The
* expires_at() or expires_from_now() functions must be called to set an
* expiry time before the timer can be waited on.
*
* @param io_context The io_context object that the timer will use to dispatch
* handlers for any asynchronous operations performed on the timer.
*/
explicit basic_deadline_timer(asio::io_context& io_context)
: basic_io_object<ASIO_SVC_T>(io_context)
{
}
/// Constructor to set a particular expiry time as an absolute time.
/**
* This constructor creates a timer and sets the expiry time.
*
* @param io_context The io_context object that the timer will use to dispatch
* handlers for any asynchronous operations performed on the timer.
*
* @param expiry_time The expiry time to be used for the timer, expressed
* as an absolute time.
*/
basic_deadline_timer(asio::io_context& io_context,
const time_type& expiry_time)
: basic_io_object<ASIO_SVC_T>(io_context)
{
asio::error_code ec;
this->get_service().expires_at(this->get_implementation(), expiry_time, ec);
asio::detail::throw_error(ec, "expires_at");
}
/// Constructor to set a particular expiry time relative to now.
/**
* This constructor creates a timer and sets the expiry time.
*
* @param io_context The io_context object that the timer will use to dispatch
* handlers for any asynchronous operations performed on the timer.
*
* @param expiry_time The expiry time to be used for the timer, relative to
* now.
*/
basic_deadline_timer(asio::io_context& io_context,
const duration_type& expiry_time)
: basic_io_object<ASIO_SVC_T>(io_context)
{
asio::error_code ec;
this->get_service().expires_from_now(
this->get_implementation(), expiry_time, ec);
asio::detail::throw_error(ec, "expires_from_now");
}
#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Move-construct a basic_deadline_timer from another.
/**
* This constructor moves a timer from one object to another.
*
* @param other The other basic_deadline_timer object from which the move will
* occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_deadline_timer(io_context&) constructor.
*/
basic_deadline_timer(basic_deadline_timer&& other)
: basic_io_object<ASIO_SVC_T>(std::move(other))
{
}
/// Move-assign a basic_deadline_timer from another.
/**
* This assignment operator moves a timer from one object to another. Cancels
* any outstanding asynchronous operations associated with the target object.
*
* @param other The other basic_deadline_timer object from which the move will
* occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_deadline_timer(io_context&) constructor.
*/
basic_deadline_timer& operator=(basic_deadline_timer&& other)
{
basic_io_object<ASIO_SVC_T>::operator=(std::move(other));
return *this;
}
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Destroys the timer.
/**
* This function destroys the timer, cancelling any outstanding asynchronous
* wait operations associated with the timer as if by calling @c cancel.
*/
~basic_deadline_timer()
{
}
#if defined(ASIO_ENABLE_OLD_SERVICES)
// These functions are provided by basic_io_object<>.
#else // defined(ASIO_ENABLE_OLD_SERVICES)
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use get_executor().) Get the io_context associated with the
/// object.
/**
* This function may be used to obtain the io_context object that the I/O
* object uses to dispatch handlers for asynchronous operations.
*
* @return A reference to the io_context object that the I/O object will use
* to dispatch handlers. Ownership is not transferred to the caller.
*/
asio::io_context& get_io_context()
{
return basic_io_object<ASIO_SVC_T>::get_io_context();
}
/// (Deprecated: Use get_executor().) Get the io_context associated with the
/// object.
/**
* This function may be used to obtain the io_context object that the I/O
* object uses to dispatch handlers for asynchronous operations.
*
* @return A reference to the io_context object that the I/O object will use
* to dispatch handlers. Ownership is not transferred to the caller.
*/
asio::io_context& get_io_service()
{
return basic_io_object<ASIO_SVC_T>::get_io_service();
}
#endif // !defined(ASIO_NO_DEPRECATED)
/// Get the executor associated with the object.
executor_type get_executor() ASIO_NOEXCEPT
{
return basic_io_object<ASIO_SVC_T>::get_executor();
}
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
/// Cancel any asynchronous operations that are waiting on the timer.
/**
* This function forces the completion of any pending asynchronous wait
* operations against the timer. The handler for each cancelled operation will
* be invoked with the asio::error::operation_aborted error code.
*
* Cancelling the timer does not change the expiry time.
*
* @return The number of asynchronous operations that were cancelled.
*
* @throws asio::system_error Thrown on failure.
*
* @note If the timer has already expired when cancel() is called, then the
* handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t cancel()
{
asio::error_code ec;
std::size_t s = this->get_service().cancel(this->get_implementation(), ec);
asio::detail::throw_error(ec, "cancel");
return s;
}
/// Cancel any asynchronous operations that are waiting on the timer.
/**
* This function forces the completion of any pending asynchronous wait
* operations against the timer. The handler for each cancelled operation will
* be invoked with the asio::error::operation_aborted error code.
*
* Cancelling the timer does not change the expiry time.
*
* @param ec Set to indicate what error occurred, if any.
*
* @return The number of asynchronous operations that were cancelled.
*
* @note If the timer has already expired when cancel() is called, then the
* handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t cancel(asio::error_code& ec)
{
return this->get_service().cancel(this->get_implementation(), ec);
}
/// Cancels one asynchronous operation that is waiting on the timer.
/**
* This function forces the completion of one pending asynchronous wait
* operation against the timer. Handlers are cancelled in FIFO order. The
* handler for the cancelled operation will be invoked with the
* asio::error::operation_aborted error code.
*
* Cancelling the timer does not change the expiry time.
*
* @return The number of asynchronous operations that were cancelled. That is,
* either 0 or 1.
*
* @throws asio::system_error Thrown on failure.
*
* @note If the timer has already expired when cancel_one() is called, then
* the handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t cancel_one()
{
asio::error_code ec;
std::size_t s = this->get_service().cancel_one(
this->get_implementation(), ec);
asio::detail::throw_error(ec, "cancel_one");
return s;
}
/// Cancels one asynchronous operation that is waiting on the timer.
/**
* This function forces the completion of one pending asynchronous wait
* operation against the timer. Handlers are cancelled in FIFO order. The
* handler for the cancelled operation will be invoked with the
* asio::error::operation_aborted error code.
*
* Cancelling the timer does not change the expiry time.
*
* @param ec Set to indicate what error occurred, if any.
*
* @return The number of asynchronous operations that were cancelled. That is,
* either 0 or 1.
*
* @note If the timer has already expired when cancel_one() is called, then
* the handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t cancel_one(asio::error_code& ec)
{
return this->get_service().cancel_one(this->get_implementation(), ec);
}
/// Get the timer's expiry time as an absolute time.
/**
* This function may be used to obtain the timer's current expiry time.
* Whether the timer has expired or not does not affect this value.
*/
time_type expires_at() const
{
return this->get_service().expires_at(this->get_implementation());
}
/// Set the timer's expiry time as an absolute time.
/**
* This function sets the expiry time. Any pending asynchronous wait
* operations will be cancelled. The handler for each cancelled operation will
* be invoked with the asio::error::operation_aborted error code.
*
* @param expiry_time The expiry time to be used for the timer.
*
* @return The number of asynchronous operations that were cancelled.
*
* @throws asio::system_error Thrown on failure.
*
* @note If the timer has already expired when expires_at() is called, then
* the handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t expires_at(const time_type& expiry_time)
{
asio::error_code ec;
std::size_t s = this->get_service().expires_at(
this->get_implementation(), expiry_time, ec);
asio::detail::throw_error(ec, "expires_at");
return s;
}
/// Set the timer's expiry time as an absolute time.
/**
* This function sets the expiry time. Any pending asynchronous wait
* operations will be cancelled. The handler for each cancelled operation will
* be invoked with the asio::error::operation_aborted error code.
*
* @param expiry_time The expiry time to be used for the timer.
*
* @param ec Set to indicate what error occurred, if any.
*
* @return The number of asynchronous operations that were cancelled.
*
* @note If the timer has already expired when expires_at() is called, then
* the handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t expires_at(const time_type& expiry_time,
asio::error_code& ec)
{
return this->get_service().expires_at(
this->get_implementation(), expiry_time, ec);
}
/// Get the timer's expiry time relative to now.
/**
* This function may be used to obtain the timer's current expiry time.
* Whether the timer has expired or not does not affect this value.
*/
duration_type expires_from_now() const
{
return this->get_service().expires_from_now(this->get_implementation());
}
/// Set the timer's expiry time relative to now.
/**
* This function sets the expiry time. Any pending asynchronous wait
* operations will be cancelled. The handler for each cancelled operation will
* be invoked with the asio::error::operation_aborted error code.
*
* @param expiry_time The expiry time to be used for the timer.
*
* @return The number of asynchronous operations that were cancelled.
*
* @throws asio::system_error Thrown on failure.
*
* @note If the timer has already expired when expires_from_now() is called,
* then the handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t expires_from_now(const duration_type& expiry_time)
{
asio::error_code ec;
std::size_t s = this->get_service().expires_from_now(
this->get_implementation(), expiry_time, ec);
asio::detail::throw_error(ec, "expires_from_now");
return s;
}
/// Set the timer's expiry time relative to now.
/**
* This function sets the expiry time. Any pending asynchronous wait
* operations will be cancelled. The handler for each cancelled operation will
* be invoked with the asio::error::operation_aborted error code.
*
* @param expiry_time The expiry time to be used for the timer.
*
* @param ec Set to indicate what error occurred, if any.
*
* @return The number of asynchronous operations that were cancelled.
*
* @note If the timer has already expired when expires_from_now() is called,
* then the handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t expires_from_now(const duration_type& expiry_time,
asio::error_code& ec)
{
return this->get_service().expires_from_now(
this->get_implementation(), expiry_time, ec);
}
/// Perform a blocking wait on the timer.
/**
* This function is used to wait for the timer to expire. This function
* blocks and does not return until the timer has expired.
*
* @throws asio::system_error Thrown on failure.
*/
void wait()
{
asio::error_code ec;
this->get_service().wait(this->get_implementation(), ec);
asio::detail::throw_error(ec, "wait");
}
/// Perform a blocking wait on the timer.
/**
* This function is used to wait for the timer to expire. This function
* blocks and does not return until the timer has expired.
*
* @param ec Set to indicate what error occurred, if any.
*/
void wait(asio::error_code& ec)
{
this->get_service().wait(this->get_implementation(), ec);
}
/// Start an asynchronous wait on the timer.
/**
* This function may be used to initiate an asynchronous wait against the
* timer. It always returns immediately.
*
* For each call to async_wait(), the supplied handler will be called exactly
* once. The handler will be called when:
*
* @li The timer has expired.
*
* @li The timer was cancelled, in which case the handler is passed the error
* code asio::error::operation_aborted.
*
* @param handler The handler to be called when the timer expires. Copies
* will be made of the handler as required. The function signature of the
* handler must be:
* @code void handler(
* const asio::error_code& error // Result of operation.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*/
template <typename WaitHandler>
ASIO_INITFN_RESULT_TYPE(WaitHandler,
void (asio::error_code))
async_wait(ASIO_MOVE_ARG(WaitHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a WaitHandler.
ASIO_WAIT_HANDLER_CHECK(WaitHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_wait(this->get_implementation(),
ASIO_MOVE_CAST(WaitHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<WaitHandler,
void (asio::error_code)> init(handler);
this->get_service().async_wait(this->get_implementation(),
init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#if !defined(ASIO_ENABLE_OLD_SERVICES)
# undef ASIO_SVC_T
#endif // !defined(ASIO_ENABLE_OLD_SERVICES)
#endif // defined(ASIO_HAS_BOOST_DATE_TIME)
// || defined(GENERATING_DOCUMENTATION)
#endif // ASIO_BASIC_DEADLINE_TIMER_HPP

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//
// basic_io_object.hpp
// ~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BASIC_IO_OBJECT_HPP
#define ASIO_BASIC_IO_OBJECT_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/io_context.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
#if defined(ASIO_HAS_MOVE)
namespace detail
{
// Type trait used to determine whether a service supports move.
template <typename IoObjectService>
class service_has_move
{
private:
typedef IoObjectService service_type;
typedef typename service_type::implementation_type implementation_type;
template <typename T, typename U>
static auto asio_service_has_move_eval(T* t, U* u)
-> decltype(t->move_construct(*u, *u), char());
static char (&asio_service_has_move_eval(...))[2];
public:
static const bool value =
sizeof(asio_service_has_move_eval(
static_cast<service_type*>(0),
static_cast<implementation_type*>(0))) == 1;
};
}
#endif // defined(ASIO_HAS_MOVE)
/// Base class for all I/O objects.
/**
* @note All I/O objects are non-copyable. However, when using C++0x, certain
* I/O objects do support move construction and move assignment.
*/
#if !defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
template <typename IoObjectService>
#else
template <typename IoObjectService,
bool Movable = detail::service_has_move<IoObjectService>::value>
#endif
class basic_io_object
{
public:
/// The type of the service that will be used to provide I/O operations.
typedef IoObjectService service_type;
/// The underlying implementation type of I/O object.
typedef typename service_type::implementation_type implementation_type;
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use get_executor().) Get the io_context associated with the
/// object.
/**
* This function may be used to obtain the io_context object that the I/O
* object uses to dispatch handlers for asynchronous operations.
*
* @return A reference to the io_context object that the I/O object will use
* to dispatch handlers. Ownership is not transferred to the caller.
*/
asio::io_context& get_io_context()
{
return service_.get_io_context();
}
/// (Deprecated: Use get_executor().) Get the io_context associated with the
/// object.
/**
* This function may be used to obtain the io_context object that the I/O
* object uses to dispatch handlers for asynchronous operations.
*
* @return A reference to the io_context object that the I/O object will use
* to dispatch handlers. Ownership is not transferred to the caller.
*/
asio::io_context& get_io_service()
{
return service_.get_io_context();
}
#endif // !defined(ASIO_NO_DEPRECATED)
/// The type of the executor associated with the object.
typedef asio::io_context::executor_type executor_type;
/// Get the executor associated with the object.
executor_type get_executor() ASIO_NOEXCEPT
{
return service_.get_io_context().get_executor();
}
protected:
/// Construct a basic_io_object.
/**
* Performs:
* @code get_service().construct(get_implementation()); @endcode
*/
explicit basic_io_object(asio::io_context& io_context)
: service_(asio::use_service<IoObjectService>(io_context))
{
service_.construct(implementation_);
}
#if defined(GENERATING_DOCUMENTATION)
/// Move-construct a basic_io_object.
/**
* Performs:
* @code get_service().move_construct(
* get_implementation(), other.get_implementation()); @endcode
*
* @note Available only for services that support movability,
*/
basic_io_object(basic_io_object&& other);
/// Move-assign a basic_io_object.
/**
* Performs:
* @code get_service().move_assign(get_implementation(),
* other.get_service(), other.get_implementation()); @endcode
*
* @note Available only for services that support movability,
*/
basic_io_object& operator=(basic_io_object&& other);
/// Perform a converting move-construction of a basic_io_object.
template <typename IoObjectService1>
basic_io_object(IoObjectService1& other_service,
typename IoObjectService1::implementation_type& other_implementation);
#endif // defined(GENERATING_DOCUMENTATION)
/// Protected destructor to prevent deletion through this type.
/**
* Performs:
* @code get_service().destroy(get_implementation()); @endcode
*/
~basic_io_object()
{
service_.destroy(implementation_);
}
/// Get the service associated with the I/O object.
service_type& get_service()
{
return service_;
}
/// Get the service associated with the I/O object.
const service_type& get_service() const
{
return service_;
}
/// Get the underlying implementation of the I/O object.
implementation_type& get_implementation()
{
return implementation_;
}
/// Get the underlying implementation of the I/O object.
const implementation_type& get_implementation() const
{
return implementation_;
}
private:
basic_io_object(const basic_io_object&);
basic_io_object& operator=(const basic_io_object&);
// The service associated with the I/O object.
service_type& service_;
/// The underlying implementation of the I/O object.
implementation_type implementation_;
};
#if defined(ASIO_HAS_MOVE)
// Specialisation for movable objects.
template <typename IoObjectService>
class basic_io_object<IoObjectService, true>
{
public:
typedef IoObjectService service_type;
typedef typename service_type::implementation_type implementation_type;
#if !defined(ASIO_NO_DEPRECATED)
asio::io_context& get_io_context()
{
return service_->get_io_context();
}
asio::io_context& get_io_service()
{
return service_->get_io_context();
}
#endif // !defined(ASIO_NO_DEPRECATED)
typedef asio::io_context::executor_type executor_type;
executor_type get_executor() ASIO_NOEXCEPT
{
return service_->get_io_context().get_executor();
}
protected:
explicit basic_io_object(asio::io_context& io_context)
: service_(&asio::use_service<IoObjectService>(io_context))
{
service_->construct(implementation_);
}
basic_io_object(basic_io_object&& other)
: service_(&other.get_service())
{
service_->move_construct(implementation_, other.implementation_);
}
template <typename IoObjectService1>
basic_io_object(IoObjectService1& other_service,
typename IoObjectService1::implementation_type& other_implementation)
: service_(&asio::use_service<IoObjectService>(
other_service.get_io_context()))
{
service_->converting_move_construct(implementation_,
other_service, other_implementation);
}
~basic_io_object()
{
service_->destroy(implementation_);
}
basic_io_object& operator=(basic_io_object&& other)
{
service_->move_assign(implementation_,
*other.service_, other.implementation_);
service_ = other.service_;
return *this;
}
service_type& get_service()
{
return *service_;
}
const service_type& get_service() const
{
return *service_;
}
implementation_type& get_implementation()
{
return implementation_;
}
const implementation_type& get_implementation() const
{
return implementation_;
}
private:
basic_io_object(const basic_io_object&);
void operator=(const basic_io_object&);
IoObjectService* service_;
implementation_type implementation_;
};
#endif // defined(ASIO_HAS_MOVE)
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_BASIC_IO_OBJECT_HPP

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//
// basic_seq_packet_socket.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BASIC_SEQ_PACKET_SOCKET_HPP
#define ASIO_BASIC_SEQ_PACKET_SOCKET_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <cstddef>
#include "asio/basic_socket.hpp"
#include "asio/detail/handler_type_requirements.hpp"
#include "asio/detail/throw_error.hpp"
#include "asio/error.hpp"
#if defined(ASIO_ENABLE_OLD_SERVICES)
# include "asio/seq_packet_socket_service.hpp"
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
#include "asio/detail/push_options.hpp"
namespace asio {
/// Provides sequenced packet socket functionality.
/**
* The basic_seq_packet_socket class template provides asynchronous and blocking
* sequenced packet socket functionality.
*
* @par Thread Safety
* @e Distinct @e objects: Safe.@n
* @e Shared @e objects: Unsafe.
*/
template <typename Protocol
ASIO_SVC_TPARAM_DEF1(= seq_packet_socket_service<Protocol>)>
class basic_seq_packet_socket
: public basic_socket<Protocol ASIO_SVC_TARG>
{
public:
/// The native representation of a socket.
#if defined(GENERATING_DOCUMENTATION)
typedef implementation_defined native_handle_type;
#else
typedef typename basic_socket<
Protocol ASIO_SVC_TARG>::native_handle_type native_handle_type;
#endif
/// The protocol type.
typedef Protocol protocol_type;
/// The endpoint type.
typedef typename Protocol::endpoint endpoint_type;
/// Construct a basic_seq_packet_socket without opening it.
/**
* This constructor creates a sequenced packet socket without opening it. The
* socket needs to be opened and then connected or accepted before data can
* be sent or received on it.
*
* @param io_context The io_context object that the sequenced packet socket
* will use to dispatch handlers for any asynchronous operations performed on
* the socket.
*/
explicit basic_seq_packet_socket(asio::io_context& io_context)
: basic_socket<Protocol ASIO_SVC_TARG>(io_context)
{
}
/// Construct and open a basic_seq_packet_socket.
/**
* This constructor creates and opens a sequenced_packet socket. The socket
* needs to be connected or accepted before data can be sent or received on
* it.
*
* @param io_context The io_context object that the sequenced packet socket
* will use to dispatch handlers for any asynchronous operations performed on
* the socket.
*
* @param protocol An object specifying protocol parameters to be used.
*
* @throws asio::system_error Thrown on failure.
*/
basic_seq_packet_socket(asio::io_context& io_context,
const protocol_type& protocol)
: basic_socket<Protocol ASIO_SVC_TARG>(io_context, protocol)
{
}
/// Construct a basic_seq_packet_socket, opening it and binding it to the
/// given local endpoint.
/**
* This constructor creates a sequenced packet socket and automatically opens
* it bound to the specified endpoint on the local machine. The protocol used
* is the protocol associated with the given endpoint.
*
* @param io_context The io_context object that the sequenced packet socket
* will use to dispatch handlers for any asynchronous operations performed on
* the socket.
*
* @param endpoint An endpoint on the local machine to which the sequenced
* packet socket will be bound.
*
* @throws asio::system_error Thrown on failure.
*/
basic_seq_packet_socket(asio::io_context& io_context,
const endpoint_type& endpoint)
: basic_socket<Protocol ASIO_SVC_TARG>(io_context, endpoint)
{
}
/// Construct a basic_seq_packet_socket on an existing native socket.
/**
* This constructor creates a sequenced packet socket object to hold an
* existing native socket.
*
* @param io_context The io_context object that the sequenced packet socket
* will use to dispatch handlers for any asynchronous operations performed on
* the socket.
*
* @param protocol An object specifying protocol parameters to be used.
*
* @param native_socket The new underlying socket implementation.
*
* @throws asio::system_error Thrown on failure.
*/
basic_seq_packet_socket(asio::io_context& io_context,
const protocol_type& protocol, const native_handle_type& native_socket)
: basic_socket<Protocol ASIO_SVC_TARG>(
io_context, protocol, native_socket)
{
}
#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Move-construct a basic_seq_packet_socket from another.
/**
* This constructor moves a sequenced packet socket from one object to
* another.
*
* @param other The other basic_seq_packet_socket object from which the move
* will occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_seq_packet_socket(io_context&) constructor.
*/
basic_seq_packet_socket(basic_seq_packet_socket&& other)
: basic_socket<Protocol ASIO_SVC_TARG>(std::move(other))
{
}
/// Move-assign a basic_seq_packet_socket from another.
/**
* This assignment operator moves a sequenced packet socket from one object to
* another.
*
* @param other The other basic_seq_packet_socket object from which the move
* will occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_seq_packet_socket(io_context&) constructor.
*/
basic_seq_packet_socket& operator=(basic_seq_packet_socket&& other)
{
basic_socket<Protocol ASIO_SVC_TARG>::operator=(std::move(other));
return *this;
}
/// Move-construct a basic_seq_packet_socket from a socket of another protocol
/// type.
/**
* This constructor moves a sequenced packet socket from one object to
* another.
*
* @param other The other basic_seq_packet_socket object from which the move
* will occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_seq_packet_socket(io_context&) constructor.
*/
template <typename Protocol1 ASIO_SVC_TPARAM1>
basic_seq_packet_socket(
basic_seq_packet_socket<Protocol1 ASIO_SVC_TARG1>&& other,
typename enable_if<is_convertible<Protocol1, Protocol>::value>::type* = 0)
: basic_socket<Protocol ASIO_SVC_TARG>(std::move(other))
{
}
/// Move-assign a basic_seq_packet_socket from a socket of another protocol
/// type.
/**
* This assignment operator moves a sequenced packet socket from one object to
* another.
*
* @param other The other basic_seq_packet_socket object from which the move
* will occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_seq_packet_socket(io_context&) constructor.
*/
template <typename Protocol1 ASIO_SVC_TPARAM1>
typename enable_if<is_convertible<Protocol1, Protocol>::value,
basic_seq_packet_socket>::type& operator=(
basic_seq_packet_socket<Protocol1 ASIO_SVC_TARG1>&& other)
{
basic_socket<Protocol ASIO_SVC_TARG>::operator=(std::move(other));
return *this;
}
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Destroys the socket.
/**
* This function destroys the socket, cancelling any outstanding asynchronous
* operations associated with the socket as if by calling @c cancel.
*/
~basic_seq_packet_socket()
{
}
/// Send some data on the socket.
/**
* This function is used to send data on the sequenced packet socket. The
* function call will block until the data has been sent successfully, or an
* until error occurs.
*
* @param buffers One or more data buffers to be sent on the socket.
*
* @param flags Flags specifying how the send call is to be made.
*
* @returns The number of bytes sent.
*
* @throws asio::system_error Thrown on failure.
*
* @par Example
* To send a single data buffer use the @ref buffer function as follows:
* @code
* socket.send(asio::buffer(data, size), 0);
* @endcode
* See the @ref buffer documentation for information on sending multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename ConstBufferSequence>
std::size_t send(const ConstBufferSequence& buffers,
socket_base::message_flags flags)
{
asio::error_code ec;
std::size_t s = this->get_service().send(
this->get_implementation(), buffers, flags, ec);
asio::detail::throw_error(ec, "send");
return s;
}
/// Send some data on the socket.
/**
* This function is used to send data on the sequenced packet socket. The
* function call will block the data has been sent successfully, or an until
* error occurs.
*
* @param buffers One or more data buffers to be sent on the socket.
*
* @param flags Flags specifying how the send call is to be made.
*
* @param ec Set to indicate what error occurred, if any.
*
* @returns The number of bytes sent. Returns 0 if an error occurred.
*
* @note The send operation may not transmit all of the data to the peer.
* Consider using the @ref write function if you need to ensure that all data
* is written before the blocking operation completes.
*/
template <typename ConstBufferSequence>
std::size_t send(const ConstBufferSequence& buffers,
socket_base::message_flags flags, asio::error_code& ec)
{
return this->get_service().send(
this->get_implementation(), buffers, flags, ec);
}
/// Start an asynchronous send.
/**
* This function is used to asynchronously send data on the sequenced packet
* socket. The function call always returns immediately.
*
* @param buffers One or more data buffers to be sent on the socket. Although
* the buffers object may be copied as necessary, ownership of the underlying
* memory blocks is retained by the caller, which must guarantee that they
* remain valid until the handler is called.
*
* @param flags Flags specifying how the send call is to be made.
*
* @param handler The handler to be called when the send operation completes.
* Copies will be made of the handler as required. The function signature of
* the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes sent.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @par Example
* To send a single data buffer use the @ref buffer function as follows:
* @code
* socket.async_send(asio::buffer(data, size), 0, handler);
* @endcode
* See the @ref buffer documentation for information on sending multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename ConstBufferSequence, typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_send(const ConstBufferSequence& buffers,
socket_base::message_flags flags,
ASIO_MOVE_ARG(WriteHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a WriteHandler.
ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_send(this->get_implementation(),
buffers, flags, ASIO_MOVE_CAST(WriteHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<WriteHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_send(this->get_implementation(),
buffers, flags, init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
/// Receive some data on the socket.
/**
* This function is used to receive data on the sequenced packet socket. The
* function call will block until data has been received successfully, or
* until an error occurs.
*
* @param buffers One or more buffers into which the data will be received.
*
* @param out_flags After the receive call completes, contains flags
* associated with the received data. For example, if the
* socket_base::message_end_of_record bit is set then the received data marks
* the end of a record.
*
* @returns The number of bytes received.
*
* @throws asio::system_error Thrown on failure. An error code of
* asio::error::eof indicates that the connection was closed by the
* peer.
*
* @par Example
* To receive into a single data buffer use the @ref buffer function as
* follows:
* @code
* socket.receive(asio::buffer(data, size), out_flags);
* @endcode
* See the @ref buffer documentation for information on receiving into
* multiple buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence>
std::size_t receive(const MutableBufferSequence& buffers,
socket_base::message_flags& out_flags)
{
asio::error_code ec;
#if defined(ASIO_ENABLE_OLD_SERVICES)
std::size_t s = this->get_service().receive(
this->get_implementation(), buffers, 0, out_flags, ec);
#else // defined(ASIO_ENABLE_OLD_SERVICES)
std::size_t s = this->get_service().receive_with_flags(
this->get_implementation(), buffers, 0, out_flags, ec);
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
asio::detail::throw_error(ec, "receive");
return s;
}
/// Receive some data on the socket.
/**
* This function is used to receive data on the sequenced packet socket. The
* function call will block until data has been received successfully, or
* until an error occurs.
*
* @param buffers One or more buffers into which the data will be received.
*
* @param in_flags Flags specifying how the receive call is to be made.
*
* @param out_flags After the receive call completes, contains flags
* associated with the received data. For example, if the
* socket_base::message_end_of_record bit is set then the received data marks
* the end of a record.
*
* @returns The number of bytes received.
*
* @throws asio::system_error Thrown on failure. An error code of
* asio::error::eof indicates that the connection was closed by the
* peer.
*
* @note The receive operation may not receive all of the requested number of
* bytes. Consider using the @ref read function if you need to ensure that the
* requested amount of data is read before the blocking operation completes.
*
* @par Example
* To receive into a single data buffer use the @ref buffer function as
* follows:
* @code
* socket.receive(asio::buffer(data, size), 0, out_flags);
* @endcode
* See the @ref buffer documentation for information on receiving into
* multiple buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence>
std::size_t receive(const MutableBufferSequence& buffers,
socket_base::message_flags in_flags,
socket_base::message_flags& out_flags)
{
asio::error_code ec;
#if defined(ASIO_ENABLE_OLD_SERVICES)
std::size_t s = this->get_service().receive(
this->get_implementation(), buffers, in_flags, out_flags, ec);
#else // defined(ASIO_ENABLE_OLD_SERVICES)
std::size_t s = this->get_service().receive_with_flags(
this->get_implementation(), buffers, in_flags, out_flags, ec);
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
asio::detail::throw_error(ec, "receive");
return s;
}
/// Receive some data on a connected socket.
/**
* This function is used to receive data on the sequenced packet socket. The
* function call will block until data has been received successfully, or
* until an error occurs.
*
* @param buffers One or more buffers into which the data will be received.
*
* @param in_flags Flags specifying how the receive call is to be made.
*
* @param out_flags After the receive call completes, contains flags
* associated with the received data. For example, if the
* socket_base::message_end_of_record bit is set then the received data marks
* the end of a record.
*
* @param ec Set to indicate what error occurred, if any.
*
* @returns The number of bytes received. Returns 0 if an error occurred.
*
* @note The receive operation may not receive all of the requested number of
* bytes. Consider using the @ref read function if you need to ensure that the
* requested amount of data is read before the blocking operation completes.
*/
template <typename MutableBufferSequence>
std::size_t receive(const MutableBufferSequence& buffers,
socket_base::message_flags in_flags,
socket_base::message_flags& out_flags, asio::error_code& ec)
{
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().receive(this->get_implementation(),
buffers, in_flags, out_flags, ec);
#else // defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().receive_with_flags(this->get_implementation(),
buffers, in_flags, out_flags, ec);
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
/// Start an asynchronous receive.
/**
* This function is used to asynchronously receive data from the sequenced
* packet socket. The function call always returns immediately.
*
* @param buffers One or more buffers into which the data will be received.
* Although the buffers object may be copied as necessary, ownership of the
* underlying memory blocks is retained by the caller, which must guarantee
* that they remain valid until the handler is called.
*
* @param out_flags Once the asynchronous operation completes, contains flags
* associated with the received data. For example, if the
* socket_base::message_end_of_record bit is set then the received data marks
* the end of a record. The caller must guarantee that the referenced
* variable remains valid until the handler is called.
*
* @param handler The handler to be called when the receive operation
* completes. Copies will be made of the handler as required. The function
* signature of the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes received.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @par Example
* To receive into a single data buffer use the @ref buffer function as
* follows:
* @code
* socket.async_receive(asio::buffer(data, size), out_flags, handler);
* @endcode
* See the @ref buffer documentation for information on receiving into
* multiple buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence, typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_receive(const MutableBufferSequence& buffers,
socket_base::message_flags& out_flags,
ASIO_MOVE_ARG(ReadHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a ReadHandler.
ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_receive(
this->get_implementation(), buffers, 0, out_flags,
ASIO_MOVE_CAST(ReadHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<ReadHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_receive_with_flags(
this->get_implementation(), buffers, 0, out_flags,
init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
/// Start an asynchronous receive.
/**
* This function is used to asynchronously receive data from the sequenced
* data socket. The function call always returns immediately.
*
* @param buffers One or more buffers into which the data will be received.
* Although the buffers object may be copied as necessary, ownership of the
* underlying memory blocks is retained by the caller, which must guarantee
* that they remain valid until the handler is called.
*
* @param in_flags Flags specifying how the receive call is to be made.
*
* @param out_flags Once the asynchronous operation completes, contains flags
* associated with the received data. For example, if the
* socket_base::message_end_of_record bit is set then the received data marks
* the end of a record. The caller must guarantee that the referenced
* variable remains valid until the handler is called.
*
* @param handler The handler to be called when the receive operation
* completes. Copies will be made of the handler as required. The function
* signature of the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes received.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @par Example
* To receive into a single data buffer use the @ref buffer function as
* follows:
* @code
* socket.async_receive(
* asio::buffer(data, size),
* 0, out_flags, handler);
* @endcode
* See the @ref buffer documentation for information on receiving into
* multiple buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence, typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_receive(const MutableBufferSequence& buffers,
socket_base::message_flags in_flags,
socket_base::message_flags& out_flags,
ASIO_MOVE_ARG(ReadHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a ReadHandler.
ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_receive(
this->get_implementation(), buffers, in_flags, out_flags,
ASIO_MOVE_CAST(ReadHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<ReadHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_receive_with_flags(
this->get_implementation(), buffers, in_flags, out_flags,
init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_BASIC_SEQ_PACKET_SOCKET_HPP

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//
// basic_serial_port.hpp
// ~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
// Copyright (c) 2008 Rep Invariant Systems, Inc. (info@repinvariant.com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BASIC_SERIAL_PORT_HPP
#define ASIO_BASIC_SERIAL_PORT_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_ENABLE_OLD_SERVICES)
#if defined(ASIO_HAS_SERIAL_PORT) \
|| defined(GENERATING_DOCUMENTATION)
#include <string>
#include "asio/basic_io_object.hpp"
#include "asio/detail/handler_type_requirements.hpp"
#include "asio/detail/throw_error.hpp"
#include "asio/error.hpp"
#include "asio/serial_port_base.hpp"
#include "asio/serial_port_service.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
/// Provides serial port functionality.
/**
* The basic_serial_port class template provides functionality that is common
* to all serial ports.
*
* @par Thread Safety
* @e Distinct @e objects: Safe.@n
* @e Shared @e objects: Unsafe.
*/
template <typename SerialPortService = serial_port_service>
class basic_serial_port
: public basic_io_object<SerialPortService>,
public serial_port_base
{
public:
/// The native representation of a serial port.
typedef typename SerialPortService::native_handle_type native_handle_type;
/// A basic_serial_port is always the lowest layer.
typedef basic_serial_port<SerialPortService> lowest_layer_type;
/// Construct a basic_serial_port without opening it.
/**
* This constructor creates a serial port without opening it.
*
* @param io_context The io_context object that the serial port will use to
* dispatch handlers for any asynchronous operations performed on the port.
*/
explicit basic_serial_port(asio::io_context& io_context)
: basic_io_object<SerialPortService>(io_context)
{
}
/// Construct and open a basic_serial_port.
/**
* This constructor creates and opens a serial port for the specified device
* name.
*
* @param io_context The io_context object that the serial port will use to
* dispatch handlers for any asynchronous operations performed on the port.
*
* @param device The platform-specific device name for this serial
* port.
*/
explicit basic_serial_port(asio::io_context& io_context,
const char* device)
: basic_io_object<SerialPortService>(io_context)
{
asio::error_code ec;
this->get_service().open(this->get_implementation(), device, ec);
asio::detail::throw_error(ec, "open");
}
/// Construct and open a basic_serial_port.
/**
* This constructor creates and opens a serial port for the specified device
* name.
*
* @param io_context The io_context object that the serial port will use to
* dispatch handlers for any asynchronous operations performed on the port.
*
* @param device The platform-specific device name for this serial
* port.
*/
explicit basic_serial_port(asio::io_context& io_context,
const std::string& device)
: basic_io_object<SerialPortService>(io_context)
{
asio::error_code ec;
this->get_service().open(this->get_implementation(), device, ec);
asio::detail::throw_error(ec, "open");
}
/// Construct a basic_serial_port on an existing native serial port.
/**
* This constructor creates a serial port object to hold an existing native
* serial port.
*
* @param io_context The io_context object that the serial port will use to
* dispatch handlers for any asynchronous operations performed on the port.
*
* @param native_serial_port A native serial port.
*
* @throws asio::system_error Thrown on failure.
*/
basic_serial_port(asio::io_context& io_context,
const native_handle_type& native_serial_port)
: basic_io_object<SerialPortService>(io_context)
{
asio::error_code ec;
this->get_service().assign(this->get_implementation(),
native_serial_port, ec);
asio::detail::throw_error(ec, "assign");
}
#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Move-construct a basic_serial_port from another.
/**
* This constructor moves a serial port from one object to another.
*
* @param other The other basic_serial_port object from which the move will
* occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_serial_port(io_context&) constructor.
*/
basic_serial_port(basic_serial_port&& other)
: basic_io_object<SerialPortService>(
ASIO_MOVE_CAST(basic_serial_port)(other))
{
}
/// Move-assign a basic_serial_port from another.
/**
* This assignment operator moves a serial port from one object to another.
*
* @param other The other basic_serial_port object from which the move will
* occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_serial_port(io_context&) constructor.
*/
basic_serial_port& operator=(basic_serial_port&& other)
{
basic_io_object<SerialPortService>::operator=(
ASIO_MOVE_CAST(basic_serial_port)(other));
return *this;
}
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Get a reference to the lowest layer.
/**
* This function returns a reference to the lowest layer in a stack of
* layers. Since a basic_serial_port cannot contain any further layers, it
* simply returns a reference to itself.
*
* @return A reference to the lowest layer in the stack of layers. Ownership
* is not transferred to the caller.
*/
lowest_layer_type& lowest_layer()
{
return *this;
}
/// Get a const reference to the lowest layer.
/**
* This function returns a const reference to the lowest layer in a stack of
* layers. Since a basic_serial_port cannot contain any further layers, it
* simply returns a reference to itself.
*
* @return A const reference to the lowest layer in the stack of layers.
* Ownership is not transferred to the caller.
*/
const lowest_layer_type& lowest_layer() const
{
return *this;
}
/// Open the serial port using the specified device name.
/**
* This function opens the serial port for the specified device name.
*
* @param device The platform-specific device name.
*
* @throws asio::system_error Thrown on failure.
*/
void open(const std::string& device)
{
asio::error_code ec;
this->get_service().open(this->get_implementation(), device, ec);
asio::detail::throw_error(ec, "open");
}
/// Open the serial port using the specified device name.
/**
* This function opens the serial port using the given platform-specific
* device name.
*
* @param device The platform-specific device name.
*
* @param ec Set the indicate what error occurred, if any.
*/
ASIO_SYNC_OP_VOID open(const std::string& device,
asio::error_code& ec)
{
this->get_service().open(this->get_implementation(), device, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Assign an existing native serial port to the serial port.
/*
* This function opens the serial port to hold an existing native serial port.
*
* @param native_serial_port A native serial port.
*
* @throws asio::system_error Thrown on failure.
*/
void assign(const native_handle_type& native_serial_port)
{
asio::error_code ec;
this->get_service().assign(this->get_implementation(),
native_serial_port, ec);
asio::detail::throw_error(ec, "assign");
}
/// Assign an existing native serial port to the serial port.
/*
* This function opens the serial port to hold an existing native serial port.
*
* @param native_serial_port A native serial port.
*
* @param ec Set to indicate what error occurred, if any.
*/
ASIO_SYNC_OP_VOID assign(const native_handle_type& native_serial_port,
asio::error_code& ec)
{
this->get_service().assign(this->get_implementation(),
native_serial_port, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Determine whether the serial port is open.
bool is_open() const
{
return this->get_service().is_open(this->get_implementation());
}
/// Close the serial port.
/**
* This function is used to close the serial port. Any asynchronous read or
* write operations will be cancelled immediately, and will complete with the
* asio::error::operation_aborted error.
*
* @throws asio::system_error Thrown on failure.
*/
void close()
{
asio::error_code ec;
this->get_service().close(this->get_implementation(), ec);
asio::detail::throw_error(ec, "close");
}
/// Close the serial port.
/**
* This function is used to close the serial port. Any asynchronous read or
* write operations will be cancelled immediately, and will complete with the
* asio::error::operation_aborted error.
*
* @param ec Set to indicate what error occurred, if any.
*/
ASIO_SYNC_OP_VOID close(asio::error_code& ec)
{
this->get_service().close(this->get_implementation(), ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Get the native serial port representation.
/**
* This function may be used to obtain the underlying representation of the
* serial port. This is intended to allow access to native serial port
* functionality that is not otherwise provided.
*/
native_handle_type native_handle()
{
return this->get_service().native_handle(this->get_implementation());
}
/// Cancel all asynchronous operations associated with the serial port.
/**
* This function causes all outstanding asynchronous read or write operations
* to finish immediately, and the handlers for cancelled operations will be
* passed the asio::error::operation_aborted error.
*
* @throws asio::system_error Thrown on failure.
*/
void cancel()
{
asio::error_code ec;
this->get_service().cancel(this->get_implementation(), ec);
asio::detail::throw_error(ec, "cancel");
}
/// Cancel all asynchronous operations associated with the serial port.
/**
* This function causes all outstanding asynchronous read or write operations
* to finish immediately, and the handlers for cancelled operations will be
* passed the asio::error::operation_aborted error.
*
* @param ec Set to indicate what error occurred, if any.
*/
ASIO_SYNC_OP_VOID cancel(asio::error_code& ec)
{
this->get_service().cancel(this->get_implementation(), ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Send a break sequence to the serial port.
/**
* This function causes a break sequence of platform-specific duration to be
* sent out the serial port.
*
* @throws asio::system_error Thrown on failure.
*/
void send_break()
{
asio::error_code ec;
this->get_service().send_break(this->get_implementation(), ec);
asio::detail::throw_error(ec, "send_break");
}
/// Send a break sequence to the serial port.
/**
* This function causes a break sequence of platform-specific duration to be
* sent out the serial port.
*
* @param ec Set to indicate what error occurred, if any.
*/
ASIO_SYNC_OP_VOID send_break(asio::error_code& ec)
{
this->get_service().send_break(this->get_implementation(), ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Set an option on the serial port.
/**
* This function is used to set an option on the serial port.
*
* @param option The option value to be set on the serial port.
*
* @throws asio::system_error Thrown on failure.
*
* @sa SettableSerialPortOption @n
* asio::serial_port_base::baud_rate @n
* asio::serial_port_base::flow_control @n
* asio::serial_port_base::parity @n
* asio::serial_port_base::stop_bits @n
* asio::serial_port_base::character_size
*/
template <typename SettableSerialPortOption>
void set_option(const SettableSerialPortOption& option)
{
asio::error_code ec;
this->get_service().set_option(this->get_implementation(), option, ec);
asio::detail::throw_error(ec, "set_option");
}
/// Set an option on the serial port.
/**
* This function is used to set an option on the serial port.
*
* @param option The option value to be set on the serial port.
*
* @param ec Set to indicate what error occurred, if any.
*
* @sa SettableSerialPortOption @n
* asio::serial_port_base::baud_rate @n
* asio::serial_port_base::flow_control @n
* asio::serial_port_base::parity @n
* asio::serial_port_base::stop_bits @n
* asio::serial_port_base::character_size
*/
template <typename SettableSerialPortOption>
ASIO_SYNC_OP_VOID set_option(const SettableSerialPortOption& option,
asio::error_code& ec)
{
this->get_service().set_option(this->get_implementation(), option, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Get an option from the serial port.
/**
* This function is used to get the current value of an option on the serial
* port.
*
* @param option The option value to be obtained from the serial port.
*
* @throws asio::system_error Thrown on failure.
*
* @sa GettableSerialPortOption @n
* asio::serial_port_base::baud_rate @n
* asio::serial_port_base::flow_control @n
* asio::serial_port_base::parity @n
* asio::serial_port_base::stop_bits @n
* asio::serial_port_base::character_size
*/
template <typename GettableSerialPortOption>
void get_option(GettableSerialPortOption& option)
{
asio::error_code ec;
this->get_service().get_option(this->get_implementation(), option, ec);
asio::detail::throw_error(ec, "get_option");
}
/// Get an option from the serial port.
/**
* This function is used to get the current value of an option on the serial
* port.
*
* @param option The option value to be obtained from the serial port.
*
* @param ec Set to indicate what error occurred, if any.
*
* @sa GettableSerialPortOption @n
* asio::serial_port_base::baud_rate @n
* asio::serial_port_base::flow_control @n
* asio::serial_port_base::parity @n
* asio::serial_port_base::stop_bits @n
* asio::serial_port_base::character_size
*/
template <typename GettableSerialPortOption>
ASIO_SYNC_OP_VOID get_option(GettableSerialPortOption& option,
asio::error_code& ec)
{
this->get_service().get_option(this->get_implementation(), option, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Write some data to the serial port.
/**
* This function is used to write data to the serial port. The function call
* will block until one or more bytes of the data has been written
* successfully, or until an error occurs.
*
* @param buffers One or more data buffers to be written to the serial port.
*
* @returns The number of bytes written.
*
* @throws asio::system_error Thrown on failure. An error code of
* asio::error::eof indicates that the connection was closed by the
* peer.
*
* @note The write_some operation may not transmit all of the data to the
* peer. Consider using the @ref write function if you need to ensure that
* all data is written before the blocking operation completes.
*
* @par Example
* To write a single data buffer use the @ref buffer function as follows:
* @code
* serial_port.write_some(asio::buffer(data, size));
* @endcode
* See the @ref buffer documentation for information on writing multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename ConstBufferSequence>
std::size_t write_some(const ConstBufferSequence& buffers)
{
asio::error_code ec;
std::size_t s = this->get_service().write_some(
this->get_implementation(), buffers, ec);
asio::detail::throw_error(ec, "write_some");
return s;
}
/// Write some data to the serial port.
/**
* This function is used to write data to the serial port. The function call
* will block until one or more bytes of the data has been written
* successfully, or until an error occurs.
*
* @param buffers One or more data buffers to be written to the serial port.
*
* @param ec Set to indicate what error occurred, if any.
*
* @returns The number of bytes written. Returns 0 if an error occurred.
*
* @note The write_some operation may not transmit all of the data to the
* peer. Consider using the @ref write function if you need to ensure that
* all data is written before the blocking operation completes.
*/
template <typename ConstBufferSequence>
std::size_t write_some(const ConstBufferSequence& buffers,
asio::error_code& ec)
{
return this->get_service().write_some(
this->get_implementation(), buffers, ec);
}
/// Start an asynchronous write.
/**
* This function is used to asynchronously write data to the serial port.
* The function call always returns immediately.
*
* @param buffers One or more data buffers to be written to the serial port.
* Although the buffers object may be copied as necessary, ownership of the
* underlying memory blocks is retained by the caller, which must guarantee
* that they remain valid until the handler is called.
*
* @param handler The handler to be called when the write operation completes.
* Copies will be made of the handler as required. The function signature of
* the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes written.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @note The write operation may not transmit all of the data to the peer.
* Consider using the @ref async_write function if you need to ensure that all
* data is written before the asynchronous operation completes.
*
* @par Example
* To write a single data buffer use the @ref buffer function as follows:
* @code
* serial_port.async_write_some(asio::buffer(data, size), handler);
* @endcode
* See the @ref buffer documentation for information on writing multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename ConstBufferSequence, typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_write_some(const ConstBufferSequence& buffers,
ASIO_MOVE_ARG(WriteHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a WriteHandler.
ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
return this->get_service().async_write_some(this->get_implementation(),
buffers, ASIO_MOVE_CAST(WriteHandler)(handler));
}
/// Read some data from the serial port.
/**
* This function is used to read data from the serial port. The function
* call will block until one or more bytes of data has been read successfully,
* or until an error occurs.
*
* @param buffers One or more buffers into which the data will be read.
*
* @returns The number of bytes read.
*
* @throws asio::system_error Thrown on failure. An error code of
* asio::error::eof indicates that the connection was closed by the
* peer.
*
* @note The read_some operation may not read all of the requested number of
* bytes. Consider using the @ref read function if you need to ensure that
* the requested amount of data is read before the blocking operation
* completes.
*
* @par Example
* To read into a single data buffer use the @ref buffer function as follows:
* @code
* serial_port.read_some(asio::buffer(data, size));
* @endcode
* See the @ref buffer documentation for information on reading into multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence>
std::size_t read_some(const MutableBufferSequence& buffers)
{
asio::error_code ec;
std::size_t s = this->get_service().read_some(
this->get_implementation(), buffers, ec);
asio::detail::throw_error(ec, "read_some");
return s;
}
/// Read some data from the serial port.
/**
* This function is used to read data from the serial port. The function
* call will block until one or more bytes of data has been read successfully,
* or until an error occurs.
*
* @param buffers One or more buffers into which the data will be read.
*
* @param ec Set to indicate what error occurred, if any.
*
* @returns The number of bytes read. Returns 0 if an error occurred.
*
* @note The read_some operation may not read all of the requested number of
* bytes. Consider using the @ref read function if you need to ensure that
* the requested amount of data is read before the blocking operation
* completes.
*/
template <typename MutableBufferSequence>
std::size_t read_some(const MutableBufferSequence& buffers,
asio::error_code& ec)
{
return this->get_service().read_some(
this->get_implementation(), buffers, ec);
}
/// Start an asynchronous read.
/**
* This function is used to asynchronously read data from the serial port.
* The function call always returns immediately.
*
* @param buffers One or more buffers into which the data will be read.
* Although the buffers object may be copied as necessary, ownership of the
* underlying memory blocks is retained by the caller, which must guarantee
* that they remain valid until the handler is called.
*
* @param handler The handler to be called when the read operation completes.
* Copies will be made of the handler as required. The function signature of
* the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes read.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @note The read operation may not read all of the requested number of bytes.
* Consider using the @ref async_read function if you need to ensure that the
* requested amount of data is read before the asynchronous operation
* completes.
*
* @par Example
* To read into a single data buffer use the @ref buffer function as follows:
* @code
* serial_port.async_read_some(asio::buffer(data, size), handler);
* @endcode
* See the @ref buffer documentation for information on reading into multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence, typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_read_some(const MutableBufferSequence& buffers,
ASIO_MOVE_ARG(ReadHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a ReadHandler.
ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
return this->get_service().async_read_some(this->get_implementation(),
buffers, ASIO_MOVE_CAST(ReadHandler)(handler));
}
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(ASIO_HAS_SERIAL_PORT)
// || defined(GENERATING_DOCUMENTATION)
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
#endif // ASIO_BASIC_SERIAL_PORT_HPP

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//
// basic_signal_set.hpp
// ~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BASIC_SIGNAL_SET_HPP
#define ASIO_BASIC_SIGNAL_SET_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_ENABLE_OLD_SERVICES)
#include "asio/basic_io_object.hpp"
#include "asio/detail/handler_type_requirements.hpp"
#include "asio/detail/throw_error.hpp"
#include "asio/error.hpp"
#include "asio/signal_set_service.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
/// Provides signal functionality.
/**
* The basic_signal_set class template provides the ability to perform an
* asynchronous wait for one or more signals to occur.
*
* Most applications will use the asio::signal_set typedef.
*
* @par Thread Safety
* @e Distinct @e objects: Safe.@n
* @e Shared @e objects: Unsafe.
*
* @par Example
* Performing an asynchronous wait:
* @code
* void handler(
* const asio::error_code& error,
* int signal_number)
* {
* if (!error)
* {
* // A signal occurred.
* }
* }
*
* ...
*
* // Construct a signal set registered for process termination.
* asio::signal_set signals(io_context, SIGINT, SIGTERM);
*
* // Start an asynchronous wait for one of the signals to occur.
* signals.async_wait(handler);
* @endcode
*
* @par Queueing of signal notifications
*
* If a signal is registered with a signal_set, and the signal occurs when
* there are no waiting handlers, then the signal notification is queued. The
* next async_wait operation on that signal_set will dequeue the notification.
* If multiple notifications are queued, subsequent async_wait operations
* dequeue them one at a time. Signal notifications are dequeued in order of
* ascending signal number.
*
* If a signal number is removed from a signal_set (using the @c remove or @c
* erase member functions) then any queued notifications for that signal are
* discarded.
*
* @par Multiple registration of signals
*
* The same signal number may be registered with different signal_set objects.
* When the signal occurs, one handler is called for each signal_set object.
*
* Note that multiple registration only works for signals that are registered
* using Asio. The application must not also register a signal handler using
* functions such as @c signal() or @c sigaction().
*
* @par Signal masking on POSIX platforms
*
* POSIX allows signals to be blocked using functions such as @c sigprocmask()
* and @c pthread_sigmask(). For signals to be delivered, programs must ensure
* that any signals registered using signal_set objects are unblocked in at
* least one thread.
*/
template <typename SignalSetService = signal_set_service>
class basic_signal_set
: public basic_io_object<SignalSetService>
{
public:
/// Construct a signal set without adding any signals.
/**
* This constructor creates a signal set without registering for any signals.
*
* @param io_context The io_context object that the signal set will use to
* dispatch handlers for any asynchronous operations performed on the set.
*/
explicit basic_signal_set(asio::io_context& io_context)
: basic_io_object<SignalSetService>(io_context)
{
}
/// Construct a signal set and add one signal.
/**
* This constructor creates a signal set and registers for one signal.
*
* @param io_context The io_context object that the signal set will use to
* dispatch handlers for any asynchronous operations performed on the set.
*
* @param signal_number_1 The signal number to be added.
*
* @note This constructor is equivalent to performing:
* @code asio::signal_set signals(io_context);
* signals.add(signal_number_1); @endcode
*/
basic_signal_set(asio::io_context& io_context, int signal_number_1)
: basic_io_object<SignalSetService>(io_context)
{
asio::error_code ec;
this->get_service().add(this->get_implementation(), signal_number_1, ec);
asio::detail::throw_error(ec, "add");
}
/// Construct a signal set and add two signals.
/**
* This constructor creates a signal set and registers for two signals.
*
* @param io_context The io_context object that the signal set will use to
* dispatch handlers for any asynchronous operations performed on the set.
*
* @param signal_number_1 The first signal number to be added.
*
* @param signal_number_2 The second signal number to be added.
*
* @note This constructor is equivalent to performing:
* @code asio::signal_set signals(io_context);
* signals.add(signal_number_1);
* signals.add(signal_number_2); @endcode
*/
basic_signal_set(asio::io_context& io_context, int signal_number_1,
int signal_number_2)
: basic_io_object<SignalSetService>(io_context)
{
asio::error_code ec;
this->get_service().add(this->get_implementation(), signal_number_1, ec);
asio::detail::throw_error(ec, "add");
this->get_service().add(this->get_implementation(), signal_number_2, ec);
asio::detail::throw_error(ec, "add");
}
/// Construct a signal set and add three signals.
/**
* This constructor creates a signal set and registers for three signals.
*
* @param io_context The io_context object that the signal set will use to
* dispatch handlers for any asynchronous operations performed on the set.
*
* @param signal_number_1 The first signal number to be added.
*
* @param signal_number_2 The second signal number to be added.
*
* @param signal_number_3 The third signal number to be added.
*
* @note This constructor is equivalent to performing:
* @code asio::signal_set signals(io_context);
* signals.add(signal_number_1);
* signals.add(signal_number_2);
* signals.add(signal_number_3); @endcode
*/
basic_signal_set(asio::io_context& io_context, int signal_number_1,
int signal_number_2, int signal_number_3)
: basic_io_object<SignalSetService>(io_context)
{
asio::error_code ec;
this->get_service().add(this->get_implementation(), signal_number_1, ec);
asio::detail::throw_error(ec, "add");
this->get_service().add(this->get_implementation(), signal_number_2, ec);
asio::detail::throw_error(ec, "add");
this->get_service().add(this->get_implementation(), signal_number_3, ec);
asio::detail::throw_error(ec, "add");
}
/// Add a signal to a signal_set.
/**
* This function adds the specified signal to the set. It has no effect if the
* signal is already in the set.
*
* @param signal_number The signal to be added to the set.
*
* @throws asio::system_error Thrown on failure.
*/
void add(int signal_number)
{
asio::error_code ec;
this->get_service().add(this->get_implementation(), signal_number, ec);
asio::detail::throw_error(ec, "add");
}
/// Add a signal to a signal_set.
/**
* This function adds the specified signal to the set. It has no effect if the
* signal is already in the set.
*
* @param signal_number The signal to be added to the set.
*
* @param ec Set to indicate what error occurred, if any.
*/
ASIO_SYNC_OP_VOID add(int signal_number, asio::error_code& ec)
{
this->get_service().add(this->get_implementation(), signal_number, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Remove a signal from a signal_set.
/**
* This function removes the specified signal from the set. It has no effect
* if the signal is not in the set.
*
* @param signal_number The signal to be removed from the set.
*
* @throws asio::system_error Thrown on failure.
*
* @note Removes any notifications that have been queued for the specified
* signal number.
*/
void remove(int signal_number)
{
asio::error_code ec;
this->get_service().remove(this->get_implementation(), signal_number, ec);
asio::detail::throw_error(ec, "remove");
}
/// Remove a signal from a signal_set.
/**
* This function removes the specified signal from the set. It has no effect
* if the signal is not in the set.
*
* @param signal_number The signal to be removed from the set.
*
* @param ec Set to indicate what error occurred, if any.
*
* @note Removes any notifications that have been queued for the specified
* signal number.
*/
ASIO_SYNC_OP_VOID remove(int signal_number,
asio::error_code& ec)
{
this->get_service().remove(this->get_implementation(), signal_number, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Remove all signals from a signal_set.
/**
* This function removes all signals from the set. It has no effect if the set
* is already empty.
*
* @throws asio::system_error Thrown on failure.
*
* @note Removes all queued notifications.
*/
void clear()
{
asio::error_code ec;
this->get_service().clear(this->get_implementation(), ec);
asio::detail::throw_error(ec, "clear");
}
/// Remove all signals from a signal_set.
/**
* This function removes all signals from the set. It has no effect if the set
* is already empty.
*
* @param ec Set to indicate what error occurred, if any.
*
* @note Removes all queued notifications.
*/
ASIO_SYNC_OP_VOID clear(asio::error_code& ec)
{
this->get_service().clear(this->get_implementation(), ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Cancel all operations associated with the signal set.
/**
* This function forces the completion of any pending asynchronous wait
* operations against the signal set. The handler for each cancelled
* operation will be invoked with the asio::error::operation_aborted
* error code.
*
* Cancellation does not alter the set of registered signals.
*
* @throws asio::system_error Thrown on failure.
*
* @note If a registered signal occurred before cancel() is called, then the
* handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
void cancel()
{
asio::error_code ec;
this->get_service().cancel(this->get_implementation(), ec);
asio::detail::throw_error(ec, "cancel");
}
/// Cancel all operations associated with the signal set.
/**
* This function forces the completion of any pending asynchronous wait
* operations against the signal set. The handler for each cancelled
* operation will be invoked with the asio::error::operation_aborted
* error code.
*
* Cancellation does not alter the set of registered signals.
*
* @param ec Set to indicate what error occurred, if any.
*
* @note If a registered signal occurred before cancel() is called, then the
* handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
ASIO_SYNC_OP_VOID cancel(asio::error_code& ec)
{
this->get_service().cancel(this->get_implementation(), ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Start an asynchronous operation to wait for a signal to be delivered.
/**
* This function may be used to initiate an asynchronous wait against the
* signal set. It always returns immediately.
*
* For each call to async_wait(), the supplied handler will be called exactly
* once. The handler will be called when:
*
* @li One of the registered signals in the signal set occurs; or
*
* @li The signal set was cancelled, in which case the handler is passed the
* error code asio::error::operation_aborted.
*
* @param handler The handler to be called when the signal occurs. Copies
* will be made of the handler as required. The function signature of the
* handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* int signal_number // Indicates which signal occurred.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*/
template <typename SignalHandler>
ASIO_INITFN_RESULT_TYPE(SignalHandler,
void (asio::error_code, int))
async_wait(ASIO_MOVE_ARG(SignalHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a SignalHandler.
ASIO_SIGNAL_HANDLER_CHECK(SignalHandler, handler) type_check;
return this->get_service().async_wait(this->get_implementation(),
ASIO_MOVE_CAST(SignalHandler)(handler));
}
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
#endif // ASIO_BASIC_SIGNAL_SET_HPP

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//
// basic_socket_iostream.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BASIC_SOCKET_IOSTREAM_HPP
#define ASIO_BASIC_SOCKET_IOSTREAM_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if !defined(ASIO_NO_IOSTREAM)
#include <istream>
#include <ostream>
#include "asio/basic_socket_streambuf.hpp"
#if defined(ASIO_ENABLE_OLD_SERVICES)
# include "asio/stream_socket_service.hpp"
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
#if !defined(ASIO_HAS_VARIADIC_TEMPLATES)
# include "asio/detail/variadic_templates.hpp"
// A macro that should expand to:
// template <typename T1, ..., typename Tn>
// explicit basic_socket_iostream(T1 x1, ..., Tn xn)
// : std::basic_iostream<char>(
// &this->detail::socket_iostream_base<
// Protocol ASIO_SVC_TARG, Clock,
// WaitTraits ASIO_SVC_TARG1>::streambuf_)
// {
// if (rdbuf()->connect(x1, ..., xn) == 0)
// this->setstate(std::ios_base::failbit);
// }
// This macro should only persist within this file.
# define ASIO_PRIVATE_CTR_DEF(n) \
template <ASIO_VARIADIC_TPARAMS(n)> \
explicit basic_socket_iostream(ASIO_VARIADIC_BYVAL_PARAMS(n)) \
: std::basic_iostream<char>( \
&this->detail::socket_iostream_base< \
Protocol ASIO_SVC_TARG, Clock, \
WaitTraits ASIO_SVC_TARG1>::streambuf_) \
{ \
this->setf(std::ios_base::unitbuf); \
if (rdbuf()->connect(ASIO_VARIADIC_BYVAL_ARGS(n)) == 0) \
this->setstate(std::ios_base::failbit); \
} \
/**/
// A macro that should expand to:
// template <typename T1, ..., typename Tn>
// void connect(T1 x1, ..., Tn xn)
// {
// if (rdbuf()->connect(x1, ..., xn) == 0)
// this->setstate(std::ios_base::failbit);
// }
// This macro should only persist within this file.
# define ASIO_PRIVATE_CONNECT_DEF(n) \
template <ASIO_VARIADIC_TPARAMS(n)> \
void connect(ASIO_VARIADIC_BYVAL_PARAMS(n)) \
{ \
if (rdbuf()->connect(ASIO_VARIADIC_BYVAL_ARGS(n)) == 0) \
this->setstate(std::ios_base::failbit); \
} \
/**/
#endif // !defined(ASIO_HAS_VARIADIC_TEMPLATES)
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
// A separate base class is used to ensure that the streambuf is initialised
// prior to the basic_socket_iostream's basic_iostream base class.
template <typename Protocol ASIO_SVC_TPARAM,
typename Clock, typename WaitTraits ASIO_SVC_TPARAM1>
class socket_iostream_base
{
protected:
socket_iostream_base()
{
}
#if defined(ASIO_HAS_MOVE)
socket_iostream_base(socket_iostream_base&& other)
: streambuf_(std::move(other.streambuf_))
{
}
socket_iostream_base(basic_stream_socket<Protocol> s)
: streambuf_(std::move(s))
{
}
socket_iostream_base& operator=(socket_iostream_base&& other)
{
streambuf_ = std::move(other.streambuf_);
return *this;
}
#endif // defined(ASIO_HAS_MOVE)
basic_socket_streambuf<Protocol ASIO_SVC_TARG,
Clock, WaitTraits ASIO_SVC_TARG1> streambuf_;
};
} // namespace detail
#if !defined(ASIO_BASIC_SOCKET_IOSTREAM_FWD_DECL)
#define ASIO_BASIC_SOCKET_IOSTREAM_FWD_DECL
// Forward declaration with defaulted arguments.
template <typename Protocol
ASIO_SVC_TPARAM_DEF1(= stream_socket_service<Protocol>),
#if defined(ASIO_HAS_BOOST_DATE_TIME) \
&& defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
typename Clock = boost::posix_time::ptime,
typename WaitTraits = time_traits<Clock>
ASIO_SVC_TPARAM1_DEF2(= deadline_timer_service<Clock, WaitTraits>)>
#else // defined(ASIO_HAS_BOOST_DATE_TIME)
// && defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
typename Clock = chrono::steady_clock,
typename WaitTraits = wait_traits<Clock>
ASIO_SVC_TPARAM1_DEF1(= steady_timer::service_type)>
#endif // defined(ASIO_HAS_BOOST_DATE_TIME)
// && defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
class basic_socket_iostream;
#endif // !defined(ASIO_BASIC_SOCKET_IOSTREAM_FWD_DECL)
/// Iostream interface for a socket.
#if defined(GENERATING_DOCUMENTATION)
template <typename Protocol,
typename Clock = chrono::steady_clock,
typename WaitTraits = wait_traits<Clock> >
#else // defined(GENERATING_DOCUMENTATION)
template <typename Protocol ASIO_SVC_TPARAM,
typename Clock, typename WaitTraits ASIO_SVC_TPARAM1>
#endif // defined(GENERATING_DOCUMENTATION)
class basic_socket_iostream
: private detail::socket_iostream_base<Protocol
ASIO_SVC_TARG, Clock, WaitTraits ASIO_SVC_TARG1>,
public std::basic_iostream<char>
{
private:
// These typedefs are intended keep this class's implementation independent
// of whether it's using Boost.DateClock, Boost.Chrono or std::chrono.
#if defined(ASIO_HAS_BOOST_DATE_TIME) \
&& defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
typedef WaitTraits traits_helper;
#else // defined(ASIO_HAS_BOOST_DATE_TIME)
// && defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
typedef detail::chrono_time_traits<Clock, WaitTraits> traits_helper;
#endif // defined(ASIO_HAS_BOOST_DATE_TIME)
// && defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
public:
/// The protocol type.
typedef Protocol protocol_type;
/// The endpoint type.
typedef typename Protocol::endpoint endpoint_type;
/// The clock type.
typedef Clock clock_type;
#if defined(GENERATING_DOCUMENTATION)
/// (Deprecated: Use time_point.) The time type.
typedef typename WaitTraits::time_type time_type;
/// The time type.
typedef typename WaitTraits::time_point time_point;
/// (Deprecated: Use duration.) The duration type.
typedef typename WaitTraits::duration_type duration_type;
/// The duration type.
typedef typename WaitTraits::duration duration;
#else
# if !defined(ASIO_NO_DEPRECATED)
typedef typename traits_helper::time_type time_type;
typedef typename traits_helper::duration_type duration_type;
# endif // !defined(ASIO_NO_DEPRECATED)
typedef typename traits_helper::time_type time_point;
typedef typename traits_helper::duration_type duration;
#endif
/// Construct a basic_socket_iostream without establishing a connection.
basic_socket_iostream()
: std::basic_iostream<char>(
&this->detail::socket_iostream_base<
Protocol ASIO_SVC_TARG, Clock,
WaitTraits ASIO_SVC_TARG1>::streambuf_)
{
this->setf(std::ios_base::unitbuf);
}
#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Construct a basic_socket_iostream from the supplied socket.
explicit basic_socket_iostream(basic_stream_socket<protocol_type> s)
: detail::socket_iostream_base<
Protocol ASIO_SVC_TARG, Clock,
WaitTraits ASIO_SVC_TARG1>(std::move(s)),
std::basic_iostream<char>(
&this->detail::socket_iostream_base<
Protocol ASIO_SVC_TARG, Clock,
WaitTraits ASIO_SVC_TARG1>::streambuf_)
{
this->setf(std::ios_base::unitbuf);
}
#if defined(ASIO_HAS_STD_IOSTREAM_MOVE) \
|| defined(GENERATING_DOCUMENTATION)
/// Move-construct a basic_socket_iostream from another.
basic_socket_iostream(basic_socket_iostream&& other)
: detail::socket_iostream_base<
Protocol ASIO_SVC_TARG, Clock,
WaitTraits ASIO_SVC_TARG1>(std::move(other)),
std::basic_iostream<char>(std::move(other))
{
this->set_rdbuf(&this->detail::socket_iostream_base<
Protocol ASIO_SVC_TARG, Clock,
WaitTraits ASIO_SVC_TARG1>::streambuf_);
}
/// Move-assign a basic_socket_iostream from another.
basic_socket_iostream& operator=(basic_socket_iostream&& other)
{
std::basic_iostream<char>::operator=(std::move(other));
detail::socket_iostream_base<
Protocol ASIO_SVC_TARG, Clock,
WaitTraits ASIO_SVC_TARG1>::operator=(std::move(other));
return *this;
}
#endif // defined(ASIO_HAS_STD_IOSTREAM_MOVE)
// || defined(GENERATING_DOCUMENTATION)
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
#if defined(GENERATING_DOCUMENTATION)
/// Establish a connection to an endpoint corresponding to a resolver query.
/**
* This constructor automatically establishes a connection based on the
* supplied resolver query parameters. The arguments are used to construct
* a resolver query object.
*/
template <typename T1, ..., typename TN>
explicit basic_socket_iostream(T1 t1, ..., TN tn);
#elif defined(ASIO_HAS_VARIADIC_TEMPLATES)
template <typename... T>
explicit basic_socket_iostream(T... x)
: std::basic_iostream<char>(
&this->detail::socket_iostream_base<
Protocol ASIO_SVC_TARG, Clock,
WaitTraits ASIO_SVC_TARG1>::streambuf_)
{
this->setf(std::ios_base::unitbuf);
if (rdbuf()->connect(x...) == 0)
this->setstate(std::ios_base::failbit);
}
#else
ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_CTR_DEF)
#endif
#if defined(GENERATING_DOCUMENTATION)
/// Establish a connection to an endpoint corresponding to a resolver query.
/**
* This function automatically establishes a connection based on the supplied
* resolver query parameters. The arguments are used to construct a resolver
* query object.
*/
template <typename T1, ..., typename TN>
void connect(T1 t1, ..., TN tn);
#elif defined(ASIO_HAS_VARIADIC_TEMPLATES)
template <typename... T>
void connect(T... x)
{
if (rdbuf()->connect(x...) == 0)
this->setstate(std::ios_base::failbit);
}
#else
ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_CONNECT_DEF)
#endif
/// Close the connection.
void close()
{
if (rdbuf()->close() == 0)
this->setstate(std::ios_base::failbit);
}
/// Return a pointer to the underlying streambuf.
basic_socket_streambuf<Protocol ASIO_SVC_TARG,
Clock, WaitTraits ASIO_SVC_TARG1>* rdbuf() const
{
return const_cast<basic_socket_streambuf<Protocol ASIO_SVC_TARG,
Clock, WaitTraits ASIO_SVC_TARG1>*>(
&this->detail::socket_iostream_base<
Protocol ASIO_SVC_TARG, Clock,
WaitTraits ASIO_SVC_TARG1>::streambuf_);
}
/// Get a reference to the underlying socket.
basic_socket<Protocol ASIO_SVC_TARG>& socket()
{
return rdbuf()->socket();
}
/// Get the last error associated with the stream.
/**
* @return An \c error_code corresponding to the last error from the stream.
*
* @par Example
* To print the error associated with a failure to establish a connection:
* @code tcp::iostream s("www.boost.org", "http");
* if (!s)
* {
* std::cout << "Error: " << s.error().message() << std::endl;
* } @endcode
*/
const asio::error_code& error() const
{
return rdbuf()->error();
}
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use expiry().) Get the stream's expiry time as an absolute
/// time.
/**
* @return An absolute time value representing the stream's expiry time.
*/
time_point expires_at() const
{
return rdbuf()->expires_at();
}
#endif // !defined(ASIO_NO_DEPRECATED)
/// Get the stream's expiry time as an absolute time.
/**
* @return An absolute time value representing the stream's expiry time.
*/
time_point expiry() const
{
return rdbuf()->expiry();
}
/// Set the stream's expiry time as an absolute time.
/**
* This function sets the expiry time associated with the stream. Stream
* operations performed after this time (where the operations cannot be
* completed using the internal buffers) will fail with the error
* asio::error::operation_aborted.
*
* @param expiry_time The expiry time to be used for the stream.
*/
void expires_at(const time_point& expiry_time)
{
rdbuf()->expires_at(expiry_time);
}
/// Set the stream's expiry time relative to now.
/**
* This function sets the expiry time associated with the stream. Stream
* operations performed after this time (where the operations cannot be
* completed using the internal buffers) will fail with the error
* asio::error::operation_aborted.
*
* @param expiry_time The expiry time to be used for the timer.
*/
void expires_after(const duration& expiry_time)
{
rdbuf()->expires_after(expiry_time);
}
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use expiry().) Get the stream's expiry time relative to now.
/**
* @return A relative time value representing the stream's expiry time.
*/
duration expires_from_now() const
{
return rdbuf()->expires_from_now();
}
/// (Deprecated: Use expires_after().) Set the stream's expiry time relative
/// to now.
/**
* This function sets the expiry time associated with the stream. Stream
* operations performed after this time (where the operations cannot be
* completed using the internal buffers) will fail with the error
* asio::error::operation_aborted.
*
* @param expiry_time The expiry time to be used for the timer.
*/
void expires_from_now(const duration& expiry_time)
{
rdbuf()->expires_from_now(expiry_time);
}
#endif // !defined(ASIO_NO_DEPRECATED)
private:
// Disallow copying and assignment.
basic_socket_iostream(const basic_socket_iostream&) ASIO_DELETED;
basic_socket_iostream& operator=(
const basic_socket_iostream&) ASIO_DELETED;
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#if !defined(ASIO_HAS_VARIADIC_TEMPLATES)
# undef ASIO_PRIVATE_CTR_DEF
# undef ASIO_PRIVATE_CONNECT_DEF
#endif // !defined(ASIO_HAS_VARIADIC_TEMPLATES)
#endif // !defined(ASIO_NO_IOSTREAM)
#endif // ASIO_BASIC_SOCKET_IOSTREAM_HPP

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//
// basic_socket_streambuf.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BASIC_SOCKET_STREAMBUF_HPP
#define ASIO_BASIC_SOCKET_STREAMBUF_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if !defined(ASIO_NO_IOSTREAM)
#include <streambuf>
#include <vector>
#include "asio/basic_socket.hpp"
#include "asio/basic_stream_socket.hpp"
#include "asio/detail/buffer_sequence_adapter.hpp"
#include "asio/detail/memory.hpp"
#include "asio/detail/throw_error.hpp"
#include "asio/io_context.hpp"
#if defined(ASIO_ENABLE_OLD_SERVICES)
# include "asio/stream_socket_service.hpp"
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
#if defined(ASIO_HAS_BOOST_DATE_TIME) \
&& defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
# if defined(ASIO_ENABLE_OLD_SERVICES)
# include "asio/deadline_timer_service.hpp"
# else // defined(ASIO_ENABLE_OLD_SERVICES)
# include "asio/detail/deadline_timer_service.hpp"
# endif // defined(ASIO_ENABLE_OLD_SERVICES)
#else // defined(ASIO_HAS_BOOST_DATE_TIME)
// && defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
# include "asio/steady_timer.hpp"
#endif // defined(ASIO_HAS_BOOST_DATE_TIME)
// && defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
#if !defined(ASIO_HAS_VARIADIC_TEMPLATES)
# include "asio/detail/variadic_templates.hpp"
// A macro that should expand to:
// template <typename T1, ..., typename Tn>
// basic_socket_streambuf* connect(T1 x1, ..., Tn xn)
// {
// init_buffers();
// typedef typename Protocol::resolver resolver_type;
// resolver_type resolver(socket().get_executor().context());
// connect_to_endpoints(
// resolver.resolve(x1, ..., xn, ec_));
// return !ec_ ? this : 0;
// }
// This macro should only persist within this file.
# define ASIO_PRIVATE_CONNECT_DEF(n) \
template <ASIO_VARIADIC_TPARAMS(n)> \
basic_socket_streambuf* connect(ASIO_VARIADIC_BYVAL_PARAMS(n)) \
{ \
init_buffers(); \
typedef typename Protocol::resolver resolver_type; \
resolver_type resolver(socket().get_executor().context()); \
connect_to_endpoints( \
resolver.resolve(ASIO_VARIADIC_BYVAL_ARGS(n), ec_)); \
return !ec_ ? this : 0; \
} \
/**/
#endif // !defined(ASIO_HAS_VARIADIC_TEMPLATES)
#if !defined(ASIO_ENABLE_OLD_SERVICES)
# define ASIO_SVC_T1 detail::deadline_timer_service<traits_helper>
#endif // !defined(ASIO_ENABLE_OLD_SERVICES)
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
// A separate base class is used to ensure that the io_context member is
// initialised prior to the basic_socket_streambuf's basic_socket base class.
class socket_streambuf_io_context
{
protected:
socket_streambuf_io_context(io_context* ctx)
: default_io_context_(ctx)
{
}
shared_ptr<io_context> default_io_context_;
};
// A separate base class is used to ensure that the dynamically allocated
// buffers are constructed prior to the basic_socket_streambuf's basic_socket
// base class. This makes moving the socket is the last potentially throwing
// step in the streambuf's move constructor, giving the constructor a strong
// exception safety guarantee.
class socket_streambuf_buffers
{
protected:
socket_streambuf_buffers()
: get_buffer_(buffer_size),
put_buffer_(buffer_size)
{
}
enum { buffer_size = 512 };
std::vector<char> get_buffer_;
std::vector<char> put_buffer_;
};
} // namespace detail
#if !defined(ASIO_BASIC_SOCKET_STREAMBUF_FWD_DECL)
#define ASIO_BASIC_SOCKET_STREAMBUF_FWD_DECL
// Forward declaration with defaulted arguments.
template <typename Protocol
ASIO_SVC_TPARAM_DEF1(= stream_socket_service<Protocol>),
#if defined(ASIO_HAS_BOOST_DATE_TIME) \
&& defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
typename Clock = boost::posix_time::ptime,
typename WaitTraits = time_traits<Clock>
ASIO_SVC_TPARAM1_DEF2(= deadline_timer_service<Clock, WaitTraits>)>
#else // defined(ASIO_HAS_BOOST_DATE_TIME)
// && defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
typename Clock = chrono::steady_clock,
typename WaitTraits = wait_traits<Clock>
ASIO_SVC_TPARAM1_DEF1(= steady_timer::service_type)>
#endif // defined(ASIO_HAS_BOOST_DATE_TIME)
// && defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
class basic_socket_streambuf;
#endif // !defined(ASIO_BASIC_SOCKET_STREAMBUF_FWD_DECL)
/// Iostream streambuf for a socket.
#if defined(GENERATING_DOCUMENTATION)
template <typename Protocol,
typename Clock = chrono::steady_clock,
typename WaitTraits = wait_traits<Clock> >
#else // defined(GENERATING_DOCUMENTATION)
template <typename Protocol ASIO_SVC_TPARAM,
typename Clock, typename WaitTraits ASIO_SVC_TPARAM1>
#endif // defined(GENERATING_DOCUMENTATION)
class basic_socket_streambuf
: public std::streambuf,
private detail::socket_streambuf_io_context,
private detail::socket_streambuf_buffers,
#if defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
private basic_socket<Protocol ASIO_SVC_TARG>
#else // defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
public basic_socket<Protocol ASIO_SVC_TARG>
#endif // defined(ASIO_NO_DEPRECATED) || defined(GENERATING_DOCUMENTATION)
{
private:
// These typedefs are intended keep this class's implementation independent
// of whether it's using Boost.DateClock, Boost.Chrono or std::chrono.
#if defined(ASIO_HAS_BOOST_DATE_TIME) \
&& defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
typedef WaitTraits traits_helper;
#else // defined(ASIO_HAS_BOOST_DATE_TIME)
// && defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
typedef detail::chrono_time_traits<Clock, WaitTraits> traits_helper;
#endif // defined(ASIO_HAS_BOOST_DATE_TIME)
// && defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
public:
/// The protocol type.
typedef Protocol protocol_type;
/// The endpoint type.
typedef typename Protocol::endpoint endpoint_type;
/// The clock type.
typedef Clock clock_type;
#if defined(GENERATING_DOCUMENTATION)
/// (Deprecated: Use time_point.) The time type.
typedef typename WaitTraits::time_type time_type;
/// The time type.
typedef typename WaitTraits::time_point time_point;
/// (Deprecated: Use duration.) The duration type.
typedef typename WaitTraits::duration_type duration_type;
/// The duration type.
typedef typename WaitTraits::duration duration;
#else
# if !defined(ASIO_NO_DEPRECATED)
typedef typename traits_helper::time_type time_type;
typedef typename traits_helper::duration_type duration_type;
# endif // !defined(ASIO_NO_DEPRECATED)
typedef typename traits_helper::time_type time_point;
typedef typename traits_helper::duration_type duration;
#endif
/// Construct a basic_socket_streambuf without establishing a connection.
basic_socket_streambuf()
: detail::socket_streambuf_io_context(new io_context),
basic_socket<Protocol ASIO_SVC_TARG>(*default_io_context_),
expiry_time_(max_expiry_time())
{
init_buffers();
}
#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Construct a basic_socket_streambuf from the supplied socket.
explicit basic_socket_streambuf(basic_stream_socket<protocol_type> s)
: detail::socket_streambuf_io_context(0),
basic_socket<Protocol ASIO_SVC_TARG>(std::move(s)),
expiry_time_(max_expiry_time())
{
init_buffers();
}
/// Move-construct a basic_socket_streambuf from another.
basic_socket_streambuf(basic_socket_streambuf&& other)
: detail::socket_streambuf_io_context(other),
basic_socket<Protocol ASIO_SVC_TARG>(std::move(other.socket())),
ec_(other.ec_),
expiry_time_(other.expiry_time_)
{
get_buffer_.swap(other.get_buffer_);
put_buffer_.swap(other.put_buffer_);
setg(other.eback(), other.gptr(), other.egptr());
setp(other.pptr(), other.epptr());
other.ec_ = asio::error_code();
other.expiry_time_ = max_expiry_time();
other.init_buffers();
}
/// Move-assign a basic_socket_streambuf from another.
basic_socket_streambuf& operator=(basic_socket_streambuf&& other)
{
this->close();
socket() = std::move(other.socket());
detail::socket_streambuf_io_context::operator=(other);
ec_ = other.ec_;
expiry_time_ = other.expiry_time_;
get_buffer_.swap(other.get_buffer_);
put_buffer_.swap(other.put_buffer_);
setg(other.eback(), other.gptr(), other.egptr());
setp(other.pptr(), other.epptr());
other.ec_ = asio::error_code();
other.expiry_time_ = max_expiry_time();
other.put_buffer_.resize(buffer_size);
other.init_buffers();
return *this;
}
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Destructor flushes buffered data.
virtual ~basic_socket_streambuf()
{
if (pptr() != pbase())
overflow(traits_type::eof());
}
/// Establish a connection.
/**
* This function establishes a connection to the specified endpoint.
*
* @return \c this if a connection was successfully established, a null
* pointer otherwise.
*/
basic_socket_streambuf* connect(const endpoint_type& endpoint)
{
init_buffers();
ec_ = asio::error_code();
this->connect_to_endpoints(&endpoint, &endpoint + 1);
return !ec_ ? this : 0;
}
#if defined(GENERATING_DOCUMENTATION)
/// Establish a connection.
/**
* This function automatically establishes a connection based on the supplied
* resolver query parameters. The arguments are used to construct a resolver
* query object.
*
* @return \c this if a connection was successfully established, a null
* pointer otherwise.
*/
template <typename T1, ..., typename TN>
basic_socket_streambuf* connect(T1 t1, ..., TN tn);
#elif defined(ASIO_HAS_VARIADIC_TEMPLATES)
template <typename... T>
basic_socket_streambuf* connect(T... x)
{
init_buffers();
typedef typename Protocol::resolver resolver_type;
resolver_type resolver(socket().get_executor().context());
connect_to_endpoints(resolver.resolve(x..., ec_));
return !ec_ ? this : 0;
}
#else
ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_CONNECT_DEF)
#endif
/// Close the connection.
/**
* @return \c this if a connection was successfully established, a null
* pointer otherwise.
*/
basic_socket_streambuf* close()
{
sync();
socket().close(ec_);
if (!ec_)
init_buffers();
return !ec_ ? this : 0;
}
/// Get a reference to the underlying socket.
basic_socket<Protocol ASIO_SVC_TARG>& socket()
{
return *this;
}
/// Get the last error associated with the stream buffer.
/**
* @return An \c error_code corresponding to the last error from the stream
* buffer.
*/
const asio::error_code& error() const
{
return ec_;
}
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use error().) Get the last error associated with the stream
/// buffer.
/**
* @return An \c error_code corresponding to the last error from the stream
* buffer.
*/
const asio::error_code& puberror() const
{
return error();
}
/// (Deprecated: Use expiry().) Get the stream buffer's expiry time as an
/// absolute time.
/**
* @return An absolute time value representing the stream buffer's expiry
* time.
*/
time_point expires_at() const
{
return expiry_time_;
}
#endif // !defined(ASIO_NO_DEPRECATED)
/// Get the stream buffer's expiry time as an absolute time.
/**
* @return An absolute time value representing the stream buffer's expiry
* time.
*/
time_point expiry() const
{
return expiry_time_;
}
/// Set the stream buffer's expiry time as an absolute time.
/**
* This function sets the expiry time associated with the stream. Stream
* operations performed after this time (where the operations cannot be
* completed using the internal buffers) will fail with the error
* asio::error::operation_aborted.
*
* @param expiry_time The expiry time to be used for the stream.
*/
void expires_at(const time_point& expiry_time)
{
expiry_time_ = expiry_time;
}
/// Set the stream buffer's expiry time relative to now.
/**
* This function sets the expiry time associated with the stream. Stream
* operations performed after this time (where the operations cannot be
* completed using the internal buffers) will fail with the error
* asio::error::operation_aborted.
*
* @param expiry_time The expiry time to be used for the timer.
*/
void expires_after(const duration& expiry_time)
{
expiry_time_ = traits_helper::add(traits_helper::now(), expiry_time);
}
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use expiry().) Get the stream buffer's expiry time relative
/// to now.
/**
* @return A relative time value representing the stream buffer's expiry time.
*/
duration expires_from_now() const
{
return traits_helper::subtract(expires_at(), traits_helper::now());
}
/// (Deprecated: Use expires_after().) Set the stream buffer's expiry time
/// relative to now.
/**
* This function sets the expiry time associated with the stream. Stream
* operations performed after this time (where the operations cannot be
* completed using the internal buffers) will fail with the error
* asio::error::operation_aborted.
*
* @param expiry_time The expiry time to be used for the timer.
*/
void expires_from_now(const duration& expiry_time)
{
expiry_time_ = traits_helper::add(traits_helper::now(), expiry_time);
}
#endif // !defined(ASIO_NO_DEPRECATED)
protected:
int_type underflow()
{
#if defined(ASIO_WINDOWS_RUNTIME)
ec_ = asio::error::operation_not_supported;
return traits_type::eof();
#else // defined(ASIO_WINDOWS_RUNTIME)
if (gptr() != egptr())
return traits_type::eof();
for (;;)
{
// Check if we are past the expiry time.
if (traits_helper::less_than(expiry_time_, traits_helper::now()))
{
ec_ = asio::error::timed_out;
return traits_type::eof();
}
// Try to complete the operation without blocking.
if (!socket().native_non_blocking())
socket().native_non_blocking(true, ec_);
detail::buffer_sequence_adapter<mutable_buffer, mutable_buffer>
bufs(asio::buffer(get_buffer_) + putback_max);
detail::signed_size_type bytes = detail::socket_ops::recv(
socket().native_handle(), bufs.buffers(), bufs.count(), 0, ec_);
// Check if operation succeeded.
if (bytes > 0)
{
setg(&get_buffer_[0], &get_buffer_[0] + putback_max,
&get_buffer_[0] + putback_max + bytes);
return traits_type::to_int_type(*gptr());
}
// Check for EOF.
if (bytes == 0)
{
ec_ = asio::error::eof;
return traits_type::eof();
}
// Operation failed.
if (ec_ != asio::error::would_block
&& ec_ != asio::error::try_again)
return traits_type::eof();
// Wait for socket to become ready.
if (detail::socket_ops::poll_read(
socket().native_handle(), 0, timeout(), ec_) < 0)
return traits_type::eof();
}
#endif // defined(ASIO_WINDOWS_RUNTIME)
}
int_type overflow(int_type c)
{
#if defined(ASIO_WINDOWS_RUNTIME)
ec_ = asio::error::operation_not_supported;
return traits_type::eof();
#else // defined(ASIO_WINDOWS_RUNTIME)
char_type ch = traits_type::to_char_type(c);
// Determine what needs to be sent.
const_buffer output_buffer;
if (put_buffer_.empty())
{
if (traits_type::eq_int_type(c, traits_type::eof()))
return traits_type::not_eof(c); // Nothing to do.
output_buffer = asio::buffer(&ch, sizeof(char_type));
}
else
{
output_buffer = asio::buffer(pbase(),
(pptr() - pbase()) * sizeof(char_type));
}
while (output_buffer.size() > 0)
{
// Check if we are past the expiry time.
if (traits_helper::less_than(expiry_time_, traits_helper::now()))
{
ec_ = asio::error::timed_out;
return traits_type::eof();
}
// Try to complete the operation without blocking.
if (!socket().native_non_blocking())
socket().native_non_blocking(true, ec_);
detail::buffer_sequence_adapter<
const_buffer, const_buffer> bufs(output_buffer);
detail::signed_size_type bytes = detail::socket_ops::send(
socket().native_handle(), bufs.buffers(), bufs.count(), 0, ec_);
// Check if operation succeeded.
if (bytes > 0)
{
output_buffer += static_cast<std::size_t>(bytes);
continue;
}
// Operation failed.
if (ec_ != asio::error::would_block
&& ec_ != asio::error::try_again)
return traits_type::eof();
// Wait for socket to become ready.
if (detail::socket_ops::poll_write(
socket().native_handle(), 0, timeout(), ec_) < 0)
return traits_type::eof();
}
if (!put_buffer_.empty())
{
setp(&put_buffer_[0], &put_buffer_[0] + put_buffer_.size());
// If the new character is eof then our work here is done.
if (traits_type::eq_int_type(c, traits_type::eof()))
return traits_type::not_eof(c);
// Add the new character to the output buffer.
*pptr() = ch;
pbump(1);
}
return c;
#endif // defined(ASIO_WINDOWS_RUNTIME)
}
int sync()
{
return overflow(traits_type::eof());
}
std::streambuf* setbuf(char_type* s, std::streamsize n)
{
if (pptr() == pbase() && s == 0 && n == 0)
{
put_buffer_.clear();
setp(0, 0);
sync();
return this;
}
return 0;
}
private:
// Disallow copying and assignment.
basic_socket_streambuf(const basic_socket_streambuf&) ASIO_DELETED;
basic_socket_streambuf& operator=(
const basic_socket_streambuf&) ASIO_DELETED;
void init_buffers()
{
setg(&get_buffer_[0],
&get_buffer_[0] + putback_max,
&get_buffer_[0] + putback_max);
if (put_buffer_.empty())
setp(0, 0);
else
setp(&put_buffer_[0], &put_buffer_[0] + put_buffer_.size());
}
int timeout() const
{
int64_t msec = traits_helper::to_posix_duration(
traits_helper::subtract(expiry_time_,
traits_helper::now())).total_milliseconds();
if (msec > (std::numeric_limits<int>::max)())
msec = (std::numeric_limits<int>::max)();
else if (msec < 0)
msec = 0;
return static_cast<int>(msec);
}
template <typename EndpointSequence>
void connect_to_endpoints(const EndpointSequence& endpoints)
{
this->connect_to_endpoints(endpoints.begin(), endpoints.end());
}
template <typename EndpointIterator>
void connect_to_endpoints(EndpointIterator begin, EndpointIterator end)
{
#if defined(ASIO_WINDOWS_RUNTIME)
ec_ = asio::error::operation_not_supported;
#else // defined(ASIO_WINDOWS_RUNTIME)
if (ec_)
return;
ec_ = asio::error::not_found;
for (EndpointIterator i = begin; i != end; ++i)
{
// Check if we are past the expiry time.
if (traits_helper::less_than(expiry_time_, traits_helper::now()))
{
ec_ = asio::error::timed_out;
return;
}
// Close and reopen the socket.
typename Protocol::endpoint ep(*i);
socket().close(ec_);
socket().open(ep.protocol(), ec_);
if (ec_)
continue;
// Try to complete the operation without blocking.
if (!socket().native_non_blocking())
socket().native_non_blocking(true, ec_);
detail::socket_ops::connect(socket().native_handle(),
ep.data(), ep.size(), ec_);
// Check if operation succeeded.
if (!ec_)
return;
// Operation failed.
if (ec_ != asio::error::in_progress
&& ec_ != asio::error::would_block)
continue;
// Wait for socket to become ready.
if (detail::socket_ops::poll_connect(
socket().native_handle(), timeout(), ec_) < 0)
continue;
// Get the error code from the connect operation.
int connect_error = 0;
size_t connect_error_len = sizeof(connect_error);
if (detail::socket_ops::getsockopt(socket().native_handle(), 0,
SOL_SOCKET, SO_ERROR, &connect_error, &connect_error_len, ec_)
== detail::socket_error_retval)
return;
// Check the result of the connect operation.
ec_ = asio::error_code(connect_error,
asio::error::get_system_category());
if (!ec_)
return;
}
#endif // defined(ASIO_WINDOWS_RUNTIME)
}
// Helper function to get the maximum expiry time.
static time_point max_expiry_time()
{
#if defined(ASIO_HAS_BOOST_DATE_TIME) \
&& defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
return boost::posix_time::pos_infin;
#else // defined(ASIO_HAS_BOOST_DATE_TIME)
// && defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
return (time_point::max)();
#endif // defined(ASIO_HAS_BOOST_DATE_TIME)
// && defined(ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM)
}
enum { putback_max = 8 };
asio::error_code ec_;
time_point expiry_time_;
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#if !defined(ASIO_ENABLE_OLD_SERVICES)
# undef ASIO_SVC_T1
#endif // !defined(ASIO_ENABLE_OLD_SERVICES)
#if !defined(ASIO_HAS_VARIADIC_TEMPLATES)
# undef ASIO_PRIVATE_CONNECT_DEF
#endif // !defined(ASIO_HAS_VARIADIC_TEMPLATES)
#endif // !defined(ASIO_NO_IOSTREAM)
#endif // ASIO_BASIC_SOCKET_STREAMBUF_HPP

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//
// basic_stream_socket.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BASIC_STREAM_SOCKET_HPP
#define ASIO_BASIC_STREAM_SOCKET_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <cstddef>
#include "asio/async_result.hpp"
#include "asio/basic_socket.hpp"
#include "asio/detail/handler_type_requirements.hpp"
#include "asio/detail/throw_error.hpp"
#include "asio/error.hpp"
#if defined(ASIO_ENABLE_OLD_SERVICES)
# include "asio/stream_socket_service.hpp"
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
#include "asio/detail/push_options.hpp"
namespace asio {
/// Provides stream-oriented socket functionality.
/**
* The basic_stream_socket class template provides asynchronous and blocking
* stream-oriented socket functionality.
*
* @par Thread Safety
* @e Distinct @e objects: Safe.@n
* @e Shared @e objects: Unsafe.
*
* @par Concepts:
* AsyncReadStream, AsyncWriteStream, Stream, SyncReadStream, SyncWriteStream.
*/
template <typename Protocol
ASIO_SVC_TPARAM_DEF1(= stream_socket_service<Protocol>)>
class basic_stream_socket
: public basic_socket<Protocol ASIO_SVC_TARG>
{
public:
/// The native representation of a socket.
#if defined(GENERATING_DOCUMENTATION)
typedef implementation_defined native_handle_type;
#else
typedef typename basic_socket<
Protocol ASIO_SVC_TARG>::native_handle_type native_handle_type;
#endif
/// The protocol type.
typedef Protocol protocol_type;
/// The endpoint type.
typedef typename Protocol::endpoint endpoint_type;
/// Construct a basic_stream_socket without opening it.
/**
* This constructor creates a stream socket without opening it. The socket
* needs to be opened and then connected or accepted before data can be sent
* or received on it.
*
* @param io_context The io_context object that the stream socket will use to
* dispatch handlers for any asynchronous operations performed on the socket.
*/
explicit basic_stream_socket(asio::io_context& io_context)
: basic_socket<Protocol ASIO_SVC_TARG>(io_context)
{
}
/// Construct and open a basic_stream_socket.
/**
* This constructor creates and opens a stream socket. The socket needs to be
* connected or accepted before data can be sent or received on it.
*
* @param io_context The io_context object that the stream socket will use to
* dispatch handlers for any asynchronous operations performed on the socket.
*
* @param protocol An object specifying protocol parameters to be used.
*
* @throws asio::system_error Thrown on failure.
*/
basic_stream_socket(asio::io_context& io_context,
const protocol_type& protocol)
: basic_socket<Protocol ASIO_SVC_TARG>(io_context, protocol)
{
}
/// Construct a basic_stream_socket, opening it and binding it to the given
/// local endpoint.
/**
* This constructor creates a stream socket and automatically opens it bound
* to the specified endpoint on the local machine. The protocol used is the
* protocol associated with the given endpoint.
*
* @param io_context The io_context object that the stream socket will use to
* dispatch handlers for any asynchronous operations performed on the socket.
*
* @param endpoint An endpoint on the local machine to which the stream
* socket will be bound.
*
* @throws asio::system_error Thrown on failure.
*/
basic_stream_socket(asio::io_context& io_context,
const endpoint_type& endpoint)
: basic_socket<Protocol ASIO_SVC_TARG>(io_context, endpoint)
{
}
/// Construct a basic_stream_socket on an existing native socket.
/**
* This constructor creates a stream socket object to hold an existing native
* socket.
*
* @param io_context The io_context object that the stream socket will use to
* dispatch handlers for any asynchronous operations performed on the socket.
*
* @param protocol An object specifying protocol parameters to be used.
*
* @param native_socket The new underlying socket implementation.
*
* @throws asio::system_error Thrown on failure.
*/
basic_stream_socket(asio::io_context& io_context,
const protocol_type& protocol, const native_handle_type& native_socket)
: basic_socket<Protocol ASIO_SVC_TARG>(
io_context, protocol, native_socket)
{
}
#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Move-construct a basic_stream_socket from another.
/**
* This constructor moves a stream socket from one object to another.
*
* @param other The other basic_stream_socket object from which the move
* will occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_stream_socket(io_context&) constructor.
*/
basic_stream_socket(basic_stream_socket&& other)
: basic_socket<Protocol ASIO_SVC_TARG>(std::move(other))
{
}
/// Move-assign a basic_stream_socket from another.
/**
* This assignment operator moves a stream socket from one object to another.
*
* @param other The other basic_stream_socket object from which the move
* will occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_stream_socket(io_context&) constructor.
*/
basic_stream_socket& operator=(basic_stream_socket&& other)
{
basic_socket<Protocol ASIO_SVC_TARG>::operator=(std::move(other));
return *this;
}
/// Move-construct a basic_stream_socket from a socket of another protocol
/// type.
/**
* This constructor moves a stream socket from one object to another.
*
* @param other The other basic_stream_socket object from which the move
* will occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_stream_socket(io_context&) constructor.
*/
template <typename Protocol1 ASIO_SVC_TPARAM1>
basic_stream_socket(
basic_stream_socket<Protocol1 ASIO_SVC_TARG1>&& other,
typename enable_if<is_convertible<Protocol1, Protocol>::value>::type* = 0)
: basic_socket<Protocol ASIO_SVC_TARG>(std::move(other))
{
}
/// Move-assign a basic_stream_socket from a socket of another protocol type.
/**
* This assignment operator moves a stream socket from one object to another.
*
* @param other The other basic_stream_socket object from which the move
* will occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_stream_socket(io_context&) constructor.
*/
template <typename Protocol1 ASIO_SVC_TPARAM1>
typename enable_if<is_convertible<Protocol1, Protocol>::value,
basic_stream_socket>::type& operator=(
basic_stream_socket<Protocol1 ASIO_SVC_TARG1>&& other)
{
basic_socket<Protocol ASIO_SVC_TARG>::operator=(std::move(other));
return *this;
}
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Destroys the socket.
/**
* This function destroys the socket, cancelling any outstanding asynchronous
* operations associated with the socket as if by calling @c cancel.
*/
~basic_stream_socket()
{
}
/// Send some data on the socket.
/**
* This function is used to send data on the stream socket. The function
* call will block until one or more bytes of the data has been sent
* successfully, or an until error occurs.
*
* @param buffers One or more data buffers to be sent on the socket.
*
* @returns The number of bytes sent.
*
* @throws asio::system_error Thrown on failure.
*
* @note The send operation may not transmit all of the data to the peer.
* Consider using the @ref write function if you need to ensure that all data
* is written before the blocking operation completes.
*
* @par Example
* To send a single data buffer use the @ref buffer function as follows:
* @code
* socket.send(asio::buffer(data, size));
* @endcode
* See the @ref buffer documentation for information on sending multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename ConstBufferSequence>
std::size_t send(const ConstBufferSequence& buffers)
{
asio::error_code ec;
std::size_t s = this->get_service().send(
this->get_implementation(), buffers, 0, ec);
asio::detail::throw_error(ec, "send");
return s;
}
/// Send some data on the socket.
/**
* This function is used to send data on the stream socket. The function
* call will block until one or more bytes of the data has been sent
* successfully, or an until error occurs.
*
* @param buffers One or more data buffers to be sent on the socket.
*
* @param flags Flags specifying how the send call is to be made.
*
* @returns The number of bytes sent.
*
* @throws asio::system_error Thrown on failure.
*
* @note The send operation may not transmit all of the data to the peer.
* Consider using the @ref write function if you need to ensure that all data
* is written before the blocking operation completes.
*
* @par Example
* To send a single data buffer use the @ref buffer function as follows:
* @code
* socket.send(asio::buffer(data, size), 0);
* @endcode
* See the @ref buffer documentation for information on sending multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename ConstBufferSequence>
std::size_t send(const ConstBufferSequence& buffers,
socket_base::message_flags flags)
{
asio::error_code ec;
std::size_t s = this->get_service().send(
this->get_implementation(), buffers, flags, ec);
asio::detail::throw_error(ec, "send");
return s;
}
/// Send some data on the socket.
/**
* This function is used to send data on the stream socket. The function
* call will block until one or more bytes of the data has been sent
* successfully, or an until error occurs.
*
* @param buffers One or more data buffers to be sent on the socket.
*
* @param flags Flags specifying how the send call is to be made.
*
* @param ec Set to indicate what error occurred, if any.
*
* @returns The number of bytes sent. Returns 0 if an error occurred.
*
* @note The send operation may not transmit all of the data to the peer.
* Consider using the @ref write function if you need to ensure that all data
* is written before the blocking operation completes.
*/
template <typename ConstBufferSequence>
std::size_t send(const ConstBufferSequence& buffers,
socket_base::message_flags flags, asio::error_code& ec)
{
return this->get_service().send(
this->get_implementation(), buffers, flags, ec);
}
/// Start an asynchronous send.
/**
* This function is used to asynchronously send data on the stream socket.
* The function call always returns immediately.
*
* @param buffers One or more data buffers to be sent on the socket. Although
* the buffers object may be copied as necessary, ownership of the underlying
* memory blocks is retained by the caller, which must guarantee that they
* remain valid until the handler is called.
*
* @param handler The handler to be called when the send operation completes.
* Copies will be made of the handler as required. The function signature of
* the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes sent.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @note The send operation may not transmit all of the data to the peer.
* Consider using the @ref async_write function if you need to ensure that all
* data is written before the asynchronous operation completes.
*
* @par Example
* To send a single data buffer use the @ref buffer function as follows:
* @code
* socket.async_send(asio::buffer(data, size), handler);
* @endcode
* See the @ref buffer documentation for information on sending multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename ConstBufferSequence, typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_send(const ConstBufferSequence& buffers,
ASIO_MOVE_ARG(WriteHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a WriteHandler.
ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_send(
this->get_implementation(), buffers, 0,
ASIO_MOVE_CAST(WriteHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<WriteHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_send(
this->get_implementation(), buffers, 0,
init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
/// Start an asynchronous send.
/**
* This function is used to asynchronously send data on the stream socket.
* The function call always returns immediately.
*
* @param buffers One or more data buffers to be sent on the socket. Although
* the buffers object may be copied as necessary, ownership of the underlying
* memory blocks is retained by the caller, which must guarantee that they
* remain valid until the handler is called.
*
* @param flags Flags specifying how the send call is to be made.
*
* @param handler The handler to be called when the send operation completes.
* Copies will be made of the handler as required. The function signature of
* the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes sent.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @note The send operation may not transmit all of the data to the peer.
* Consider using the @ref async_write function if you need to ensure that all
* data is written before the asynchronous operation completes.
*
* @par Example
* To send a single data buffer use the @ref buffer function as follows:
* @code
* socket.async_send(asio::buffer(data, size), 0, handler);
* @endcode
* See the @ref buffer documentation for information on sending multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename ConstBufferSequence, typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_send(const ConstBufferSequence& buffers,
socket_base::message_flags flags,
ASIO_MOVE_ARG(WriteHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a WriteHandler.
ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_send(
this->get_implementation(), buffers, flags,
ASIO_MOVE_CAST(WriteHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<WriteHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_send(
this->get_implementation(), buffers, flags,
init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
/// Receive some data on the socket.
/**
* This function is used to receive data on the stream socket. The function
* call will block until one or more bytes of data has been received
* successfully, or until an error occurs.
*
* @param buffers One or more buffers into which the data will be received.
*
* @returns The number of bytes received.
*
* @throws asio::system_error Thrown on failure. An error code of
* asio::error::eof indicates that the connection was closed by the
* peer.
*
* @note The receive operation may not receive all of the requested number of
* bytes. Consider using the @ref read function if you need to ensure that the
* requested amount of data is read before the blocking operation completes.
*
* @par Example
* To receive into a single data buffer use the @ref buffer function as
* follows:
* @code
* socket.receive(asio::buffer(data, size));
* @endcode
* See the @ref buffer documentation for information on receiving into
* multiple buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence>
std::size_t receive(const MutableBufferSequence& buffers)
{
asio::error_code ec;
std::size_t s = this->get_service().receive(
this->get_implementation(), buffers, 0, ec);
asio::detail::throw_error(ec, "receive");
return s;
}
/// Receive some data on the socket.
/**
* This function is used to receive data on the stream socket. The function
* call will block until one or more bytes of data has been received
* successfully, or until an error occurs.
*
* @param buffers One or more buffers into which the data will be received.
*
* @param flags Flags specifying how the receive call is to be made.
*
* @returns The number of bytes received.
*
* @throws asio::system_error Thrown on failure. An error code of
* asio::error::eof indicates that the connection was closed by the
* peer.
*
* @note The receive operation may not receive all of the requested number of
* bytes. Consider using the @ref read function if you need to ensure that the
* requested amount of data is read before the blocking operation completes.
*
* @par Example
* To receive into a single data buffer use the @ref buffer function as
* follows:
* @code
* socket.receive(asio::buffer(data, size), 0);
* @endcode
* See the @ref buffer documentation for information on receiving into
* multiple buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence>
std::size_t receive(const MutableBufferSequence& buffers,
socket_base::message_flags flags)
{
asio::error_code ec;
std::size_t s = this->get_service().receive(
this->get_implementation(), buffers, flags, ec);
asio::detail::throw_error(ec, "receive");
return s;
}
/// Receive some data on a connected socket.
/**
* This function is used to receive data on the stream socket. The function
* call will block until one or more bytes of data has been received
* successfully, or until an error occurs.
*
* @param buffers One or more buffers into which the data will be received.
*
* @param flags Flags specifying how the receive call is to be made.
*
* @param ec Set to indicate what error occurred, if any.
*
* @returns The number of bytes received. Returns 0 if an error occurred.
*
* @note The receive operation may not receive all of the requested number of
* bytes. Consider using the @ref read function if you need to ensure that the
* requested amount of data is read before the blocking operation completes.
*/
template <typename MutableBufferSequence>
std::size_t receive(const MutableBufferSequence& buffers,
socket_base::message_flags flags, asio::error_code& ec)
{
return this->get_service().receive(
this->get_implementation(), buffers, flags, ec);
}
/// Start an asynchronous receive.
/**
* This function is used to asynchronously receive data from the stream
* socket. The function call always returns immediately.
*
* @param buffers One or more buffers into which the data will be received.
* Although the buffers object may be copied as necessary, ownership of the
* underlying memory blocks is retained by the caller, which must guarantee
* that they remain valid until the handler is called.
*
* @param handler The handler to be called when the receive operation
* completes. Copies will be made of the handler as required. The function
* signature of the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes received.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @note The receive operation may not receive all of the requested number of
* bytes. Consider using the @ref async_read function if you need to ensure
* that the requested amount of data is received before the asynchronous
* operation completes.
*
* @par Example
* To receive into a single data buffer use the @ref buffer function as
* follows:
* @code
* socket.async_receive(asio::buffer(data, size), handler);
* @endcode
* See the @ref buffer documentation for information on receiving into
* multiple buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence, typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_receive(const MutableBufferSequence& buffers,
ASIO_MOVE_ARG(ReadHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a ReadHandler.
ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_receive(this->get_implementation(),
buffers, 0, ASIO_MOVE_CAST(ReadHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<ReadHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_receive(this->get_implementation(),
buffers, 0, init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
/// Start an asynchronous receive.
/**
* This function is used to asynchronously receive data from the stream
* socket. The function call always returns immediately.
*
* @param buffers One or more buffers into which the data will be received.
* Although the buffers object may be copied as necessary, ownership of the
* underlying memory blocks is retained by the caller, which must guarantee
* that they remain valid until the handler is called.
*
* @param flags Flags specifying how the receive call is to be made.
*
* @param handler The handler to be called when the receive operation
* completes. Copies will be made of the handler as required. The function
* signature of the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes received.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @note The receive operation may not receive all of the requested number of
* bytes. Consider using the @ref async_read function if you need to ensure
* that the requested amount of data is received before the asynchronous
* operation completes.
*
* @par Example
* To receive into a single data buffer use the @ref buffer function as
* follows:
* @code
* socket.async_receive(asio::buffer(data, size), 0, handler);
* @endcode
* See the @ref buffer documentation for information on receiving into
* multiple buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence, typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_receive(const MutableBufferSequence& buffers,
socket_base::message_flags flags,
ASIO_MOVE_ARG(ReadHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a ReadHandler.
ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_receive(this->get_implementation(),
buffers, flags, ASIO_MOVE_CAST(ReadHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<ReadHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_receive(this->get_implementation(),
buffers, flags, init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
/// Write some data to the socket.
/**
* This function is used to write data to the stream socket. The function call
* will block until one or more bytes of the data has been written
* successfully, or until an error occurs.
*
* @param buffers One or more data buffers to be written to the socket.
*
* @returns The number of bytes written.
*
* @throws asio::system_error Thrown on failure. An error code of
* asio::error::eof indicates that the connection was closed by the
* peer.
*
* @note The write_some operation may not transmit all of the data to the
* peer. Consider using the @ref write function if you need to ensure that
* all data is written before the blocking operation completes.
*
* @par Example
* To write a single data buffer use the @ref buffer function as follows:
* @code
* socket.write_some(asio::buffer(data, size));
* @endcode
* See the @ref buffer documentation for information on writing multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename ConstBufferSequence>
std::size_t write_some(const ConstBufferSequence& buffers)
{
asio::error_code ec;
std::size_t s = this->get_service().send(
this->get_implementation(), buffers, 0, ec);
asio::detail::throw_error(ec, "write_some");
return s;
}
/// Write some data to the socket.
/**
* This function is used to write data to the stream socket. The function call
* will block until one or more bytes of the data has been written
* successfully, or until an error occurs.
*
* @param buffers One or more data buffers to be written to the socket.
*
* @param ec Set to indicate what error occurred, if any.
*
* @returns The number of bytes written. Returns 0 if an error occurred.
*
* @note The write_some operation may not transmit all of the data to the
* peer. Consider using the @ref write function if you need to ensure that
* all data is written before the blocking operation completes.
*/
template <typename ConstBufferSequence>
std::size_t write_some(const ConstBufferSequence& buffers,
asio::error_code& ec)
{
return this->get_service().send(this->get_implementation(), buffers, 0, ec);
}
/// Start an asynchronous write.
/**
* This function is used to asynchronously write data to the stream socket.
* The function call always returns immediately.
*
* @param buffers One or more data buffers to be written to the socket.
* Although the buffers object may be copied as necessary, ownership of the
* underlying memory blocks is retained by the caller, which must guarantee
* that they remain valid until the handler is called.
*
* @param handler The handler to be called when the write operation completes.
* Copies will be made of the handler as required. The function signature of
* the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes written.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @note The write operation may not transmit all of the data to the peer.
* Consider using the @ref async_write function if you need to ensure that all
* data is written before the asynchronous operation completes.
*
* @par Example
* To write a single data buffer use the @ref buffer function as follows:
* @code
* socket.async_write_some(asio::buffer(data, size), handler);
* @endcode
* See the @ref buffer documentation for information on writing multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename ConstBufferSequence, typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_write_some(const ConstBufferSequence& buffers,
ASIO_MOVE_ARG(WriteHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a WriteHandler.
ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_send(this->get_implementation(),
buffers, 0, ASIO_MOVE_CAST(WriteHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<WriteHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_send(this->get_implementation(),
buffers, 0, init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
/// Read some data from the socket.
/**
* This function is used to read data from the stream socket. The function
* call will block until one or more bytes of data has been read successfully,
* or until an error occurs.
*
* @param buffers One or more buffers into which the data will be read.
*
* @returns The number of bytes read.
*
* @throws asio::system_error Thrown on failure. An error code of
* asio::error::eof indicates that the connection was closed by the
* peer.
*
* @note The read_some operation may not read all of the requested number of
* bytes. Consider using the @ref read function if you need to ensure that
* the requested amount of data is read before the blocking operation
* completes.
*
* @par Example
* To read into a single data buffer use the @ref buffer function as follows:
* @code
* socket.read_some(asio::buffer(data, size));
* @endcode
* See the @ref buffer documentation for information on reading into multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence>
std::size_t read_some(const MutableBufferSequence& buffers)
{
asio::error_code ec;
std::size_t s = this->get_service().receive(
this->get_implementation(), buffers, 0, ec);
asio::detail::throw_error(ec, "read_some");
return s;
}
/// Read some data from the socket.
/**
* This function is used to read data from the stream socket. The function
* call will block until one or more bytes of data has been read successfully,
* or until an error occurs.
*
* @param buffers One or more buffers into which the data will be read.
*
* @param ec Set to indicate what error occurred, if any.
*
* @returns The number of bytes read. Returns 0 if an error occurred.
*
* @note The read_some operation may not read all of the requested number of
* bytes. Consider using the @ref read function if you need to ensure that
* the requested amount of data is read before the blocking operation
* completes.
*/
template <typename MutableBufferSequence>
std::size_t read_some(const MutableBufferSequence& buffers,
asio::error_code& ec)
{
return this->get_service().receive(
this->get_implementation(), buffers, 0, ec);
}
/// Start an asynchronous read.
/**
* This function is used to asynchronously read data from the stream socket.
* The function call always returns immediately.
*
* @param buffers One or more buffers into which the data will be read.
* Although the buffers object may be copied as necessary, ownership of the
* underlying memory blocks is retained by the caller, which must guarantee
* that they remain valid until the handler is called.
*
* @param handler The handler to be called when the read operation completes.
* Copies will be made of the handler as required. The function signature of
* the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes read.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @note The read operation may not read all of the requested number of bytes.
* Consider using the @ref async_read function if you need to ensure that the
* requested amount of data is read before the asynchronous operation
* completes.
*
* @par Example
* To read into a single data buffer use the @ref buffer function as follows:
* @code
* socket.async_read_some(asio::buffer(data, size), handler);
* @endcode
* See the @ref buffer documentation for information on reading into multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence, typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_read_some(const MutableBufferSequence& buffers,
ASIO_MOVE_ARG(ReadHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a ReadHandler.
ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_receive(this->get_implementation(),
buffers, 0, ASIO_MOVE_CAST(ReadHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<ReadHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_receive(this->get_implementation(),
buffers, 0, init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_BASIC_STREAM_SOCKET_HPP

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//
// basic_streambuf.hpp
// ~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BASIC_STREAMBUF_HPP
#define ASIO_BASIC_STREAMBUF_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if !defined(ASIO_NO_IOSTREAM)
#include <algorithm>
#include <cstring>
#include <stdexcept>
#include <streambuf>
#include <vector>
#include "asio/basic_streambuf_fwd.hpp"
#include "asio/buffer.hpp"
#include "asio/detail/limits.hpp"
#include "asio/detail/noncopyable.hpp"
#include "asio/detail/throw_exception.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
/// Automatically resizable buffer class based on std::streambuf.
/**
* The @c basic_streambuf class is derived from @c std::streambuf to associate
* the streambuf's input and output sequences with one or more character
* arrays. These character arrays are internal to the @c basic_streambuf
* object, but direct access to the array elements is provided to permit them
* to be used efficiently with I/O operations. Characters written to the output
* sequence of a @c basic_streambuf object are appended to the input sequence
* of the same object.
*
* The @c basic_streambuf class's public interface is intended to permit the
* following implementation strategies:
*
* @li A single contiguous character array, which is reallocated as necessary
* to accommodate changes in the size of the character sequence. This is the
* implementation approach currently used in Asio.
*
* @li A sequence of one or more character arrays, where each array is of the
* same size. Additional character array objects are appended to the sequence
* to accommodate changes in the size of the character sequence.
*
* @li A sequence of one or more character arrays of varying sizes. Additional
* character array objects are appended to the sequence to accommodate changes
* in the size of the character sequence.
*
* The constructor for basic_streambuf accepts a @c size_t argument specifying
* the maximum of the sum of the sizes of the input sequence and output
* sequence. During the lifetime of the @c basic_streambuf object, the following
* invariant holds:
* @code size() <= max_size()@endcode
* Any member function that would, if successful, cause the invariant to be
* violated shall throw an exception of class @c std::length_error.
*
* The constructor for @c basic_streambuf takes an Allocator argument. A copy
* of this argument is used for any memory allocation performed, by the
* constructor and by all member functions, during the lifetime of each @c
* basic_streambuf object.
*
* @par Examples
* Writing directly from an streambuf to a socket:
* @code
* asio::streambuf b;
* std::ostream os(&b);
* os << "Hello, World!\n";
*
* // try sending some data in input sequence
* size_t n = sock.send(b.data());
*
* b.consume(n); // sent data is removed from input sequence
* @endcode
*
* Reading from a socket directly into a streambuf:
* @code
* asio::streambuf b;
*
* // reserve 512 bytes in output sequence
* asio::streambuf::mutable_buffers_type bufs = b.prepare(512);
*
* size_t n = sock.receive(bufs);
*
* // received data is "committed" from output sequence to input sequence
* b.commit(n);
*
* std::istream is(&b);
* std::string s;
* is >> s;
* @endcode
*/
#if defined(GENERATING_DOCUMENTATION)
template <typename Allocator = std::allocator<char> >
#else
template <typename Allocator>
#endif
class basic_streambuf
: public std::streambuf,
private noncopyable
{
public:
#if defined(GENERATING_DOCUMENTATION)
/// The type used to represent the input sequence as a list of buffers.
typedef implementation_defined const_buffers_type;
/// The type used to represent the output sequence as a list of buffers.
typedef implementation_defined mutable_buffers_type;
#else
typedef ASIO_CONST_BUFFER const_buffers_type;
typedef ASIO_MUTABLE_BUFFER mutable_buffers_type;
#endif
/// Construct a basic_streambuf object.
/**
* Constructs a streambuf with the specified maximum size. The initial size
* of the streambuf's input sequence is 0.
*/
explicit basic_streambuf(
std::size_t maximum_size = (std::numeric_limits<std::size_t>::max)(),
const Allocator& allocator = Allocator())
: max_size_(maximum_size),
buffer_(allocator)
{
std::size_t pend = (std::min<std::size_t>)(max_size_, buffer_delta);
buffer_.resize((std::max<std::size_t>)(pend, 1));
setg(&buffer_[0], &buffer_[0], &buffer_[0]);
setp(&buffer_[0], &buffer_[0] + pend);
}
/// Get the size of the input sequence.
/**
* @returns The size of the input sequence. The value is equal to that
* calculated for @c s in the following code:
* @code
* size_t s = 0;
* const_buffers_type bufs = data();
* const_buffers_type::const_iterator i = bufs.begin();
* while (i != bufs.end())
* {
* const_buffer buf(*i++);
* s += buf.size();
* }
* @endcode
*/
std::size_t size() const ASIO_NOEXCEPT
{
return pptr() - gptr();
}
/// Get the maximum size of the basic_streambuf.
/**
* @returns The allowed maximum of the sum of the sizes of the input sequence
* and output sequence.
*/
std::size_t max_size() const ASIO_NOEXCEPT
{
return max_size_;
}
/// Get the current capacity of the basic_streambuf.
/**
* @returns The current total capacity of the streambuf, i.e. for both the
* input sequence and output sequence.
*/
std::size_t capacity() const ASIO_NOEXCEPT
{
return buffer_.capacity();
}
/// Get a list of buffers that represents the input sequence.
/**
* @returns An object of type @c const_buffers_type that satisfies
* ConstBufferSequence requirements, representing all character arrays in the
* input sequence.
*
* @note The returned object is invalidated by any @c basic_streambuf member
* function that modifies the input sequence or output sequence.
*/
const_buffers_type data() const ASIO_NOEXCEPT
{
return asio::buffer(asio::const_buffer(gptr(),
(pptr() - gptr()) * sizeof(char_type)));
}
/// Get a list of buffers that represents the output sequence, with the given
/// size.
/**
* Ensures that the output sequence can accommodate @c n characters,
* reallocating character array objects as necessary.
*
* @returns An object of type @c mutable_buffers_type that satisfies
* MutableBufferSequence requirements, representing character array objects
* at the start of the output sequence such that the sum of the buffer sizes
* is @c n.
*
* @throws std::length_error If <tt>size() + n > max_size()</tt>.
*
* @note The returned object is invalidated by any @c basic_streambuf member
* function that modifies the input sequence or output sequence.
*/
mutable_buffers_type prepare(std::size_t n)
{
reserve(n);
return asio::buffer(asio::mutable_buffer(
pptr(), n * sizeof(char_type)));
}
/// Move characters from the output sequence to the input sequence.
/**
* Appends @c n characters from the start of the output sequence to the input
* sequence. The beginning of the output sequence is advanced by @c n
* characters.
*
* Requires a preceding call <tt>prepare(x)</tt> where <tt>x >= n</tt>, and
* no intervening operations that modify the input or output sequence.
*
* @note If @c n is greater than the size of the output sequence, the entire
* output sequence is moved to the input sequence and no error is issued.
*/
void commit(std::size_t n)
{
n = std::min<std::size_t>(n, epptr() - pptr());
pbump(static_cast<int>(n));
setg(eback(), gptr(), pptr());
}
/// Remove characters from the input sequence.
/**
* Removes @c n characters from the beginning of the input sequence.
*
* @note If @c n is greater than the size of the input sequence, the entire
* input sequence is consumed and no error is issued.
*/
void consume(std::size_t n)
{
if (egptr() < pptr())
setg(&buffer_[0], gptr(), pptr());
if (gptr() + n > pptr())
n = pptr() - gptr();
gbump(static_cast<int>(n));
}
protected:
enum { buffer_delta = 128 };
/// Override std::streambuf behaviour.
/**
* Behaves according to the specification of @c std::streambuf::underflow().
*/
int_type underflow()
{
if (gptr() < pptr())
{
setg(&buffer_[0], gptr(), pptr());
return traits_type::to_int_type(*gptr());
}
else
{
return traits_type::eof();
}
}
/// Override std::streambuf behaviour.
/**
* Behaves according to the specification of @c std::streambuf::overflow(),
* with the specialisation that @c std::length_error is thrown if appending
* the character to the input sequence would require the condition
* <tt>size() > max_size()</tt> to be true.
*/
int_type overflow(int_type c)
{
if (!traits_type::eq_int_type(c, traits_type::eof()))
{
if (pptr() == epptr())
{
std::size_t buffer_size = pptr() - gptr();
if (buffer_size < max_size_ && max_size_ - buffer_size < buffer_delta)
{
reserve(max_size_ - buffer_size);
}
else
{
reserve(buffer_delta);
}
}
*pptr() = traits_type::to_char_type(c);
pbump(1);
return c;
}
return traits_type::not_eof(c);
}
void reserve(std::size_t n)
{
// Get current stream positions as offsets.
std::size_t gnext = gptr() - &buffer_[0];
std::size_t pnext = pptr() - &buffer_[0];
std::size_t pend = epptr() - &buffer_[0];
// Check if there is already enough space in the put area.
if (n <= pend - pnext)
{
return;
}
// Shift existing contents of get area to start of buffer.
if (gnext > 0)
{
pnext -= gnext;
std::memmove(&buffer_[0], &buffer_[0] + gnext, pnext);
}
// Ensure buffer is large enough to hold at least the specified size.
if (n > pend - pnext)
{
if (n <= max_size_ && pnext <= max_size_ - n)
{
pend = pnext + n;
buffer_.resize((std::max<std::size_t>)(pend, 1));
}
else
{
std::length_error ex("asio::streambuf too long");
asio::detail::throw_exception(ex);
}
}
// Update stream positions.
setg(&buffer_[0], &buffer_[0], &buffer_[0] + pnext);
setp(&buffer_[0] + pnext, &buffer_[0] + pend);
}
private:
std::size_t max_size_;
std::vector<char_type, Allocator> buffer_;
// Helper function to get the preferred size for reading data.
friend std::size_t read_size_helper(
basic_streambuf& sb, std::size_t max_size)
{
return std::min<std::size_t>(
std::max<std::size_t>(512, sb.buffer_.capacity() - sb.size()),
std::min<std::size_t>(max_size, sb.max_size() - sb.size()));
}
};
/// Adapts basic_streambuf to the dynamic buffer sequence type requirements.
#if defined(GENERATING_DOCUMENTATION)
template <typename Allocator = std::allocator<char> >
#else
template <typename Allocator>
#endif
class basic_streambuf_ref
{
public:
/// The type used to represent the input sequence as a list of buffers.
typedef typename basic_streambuf<Allocator>::const_buffers_type
const_buffers_type;
/// The type used to represent the output sequence as a list of buffers.
typedef typename basic_streambuf<Allocator>::mutable_buffers_type
mutable_buffers_type;
/// Construct a basic_streambuf_ref for the given basic_streambuf object.
explicit basic_streambuf_ref(basic_streambuf<Allocator>& sb)
: sb_(sb)
{
}
/// Copy construct a basic_streambuf_ref.
basic_streambuf_ref(const basic_streambuf_ref& other) ASIO_NOEXCEPT
: sb_(other.sb_)
{
}
#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Move construct a basic_streambuf_ref.
basic_streambuf_ref(basic_streambuf_ref&& other) ASIO_NOEXCEPT
: sb_(other.sb_)
{
}
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Get the size of the input sequence.
std::size_t size() const ASIO_NOEXCEPT
{
return sb_.size();
}
/// Get the maximum size of the dynamic buffer.
std::size_t max_size() const ASIO_NOEXCEPT
{
return sb_.max_size();
}
/// Get the current capacity of the dynamic buffer.
std::size_t capacity() const ASIO_NOEXCEPT
{
return sb_.capacity();
}
/// Get a list of buffers that represents the input sequence.
const_buffers_type data() const ASIO_NOEXCEPT
{
return sb_.data();
}
/// Get a list of buffers that represents the output sequence, with the given
/// size.
mutable_buffers_type prepare(std::size_t n)
{
return sb_.prepare(n);
}
/// Move bytes from the output sequence to the input sequence.
void commit(std::size_t n)
{
return sb_.commit(n);
}
/// Remove characters from the input sequence.
void consume(std::size_t n)
{
return sb_.consume(n);
}
private:
basic_streambuf<Allocator>& sb_;
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // !defined(ASIO_NO_IOSTREAM)
#endif // ASIO_BASIC_STREAMBUF_HPP

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//
// basic_streambuf_fwd.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BASIC_STREAMBUF_FWD_HPP
#define ASIO_BASIC_STREAMBUF_FWD_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if !defined(ASIO_NO_IOSTREAM)
#include <memory>
namespace asio {
template <typename Allocator = std::allocator<char> >
class basic_streambuf;
template <typename Allocator = std::allocator<char> >
class basic_streambuf_ref;
} // namespace asio
#endif // !defined(ASIO_NO_IOSTREAM)
#endif // ASIO_BASIC_STREAMBUF_FWD_HPP

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//
// basic_waitable_timer.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BASIC_WAITABLE_TIMER_HPP
#define ASIO_BASIC_WAITABLE_TIMER_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <cstddef>
#include "asio/basic_io_object.hpp"
#include "asio/detail/handler_type_requirements.hpp"
#include "asio/detail/throw_error.hpp"
#include "asio/error.hpp"
#include "asio/wait_traits.hpp"
#if defined(ASIO_HAS_MOVE)
# include <utility>
#endif // defined(ASIO_HAS_MOVE)
#if defined(ASIO_ENABLE_OLD_SERVICES)
# include "asio/waitable_timer_service.hpp"
#else // defined(ASIO_ENABLE_OLD_SERVICES)
# include "asio/detail/chrono_time_traits.hpp"
# include "asio/detail/deadline_timer_service.hpp"
# define ASIO_SVC_T \
detail::deadline_timer_service< \
detail::chrono_time_traits<Clock, WaitTraits> >
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
#include "asio/detail/push_options.hpp"
namespace asio {
#if !defined(ASIO_BASIC_WAITABLE_TIMER_FWD_DECL)
#define ASIO_BASIC_WAITABLE_TIMER_FWD_DECL
// Forward declaration with defaulted arguments.
template <typename Clock,
typename WaitTraits = asio::wait_traits<Clock>
ASIO_SVC_TPARAM_DEF2(= waitable_timer_service<Clock, WaitTraits>)>
class basic_waitable_timer;
#endif // !defined(ASIO_BASIC_WAITABLE_TIMER_FWD_DECL)
/// Provides waitable timer functionality.
/**
* The basic_waitable_timer class template provides the ability to perform a
* blocking or asynchronous wait for a timer to expire.
*
* A waitable timer is always in one of two states: "expired" or "not expired".
* If the wait() or async_wait() function is called on an expired timer, the
* wait operation will complete immediately.
*
* Most applications will use one of the asio::steady_timer,
* asio::system_timer or asio::high_resolution_timer typedefs.
*
* @note This waitable timer functionality is for use with the C++11 standard
* library's @c &lt;chrono&gt; facility, or with the Boost.Chrono library.
*
* @par Thread Safety
* @e Distinct @e objects: Safe.@n
* @e Shared @e objects: Unsafe.
*
* @par Examples
* Performing a blocking wait (C++11):
* @code
* // Construct a timer without setting an expiry time.
* asio::steady_timer timer(io_context);
*
* // Set an expiry time relative to now.
* timer.expires_after(std::chrono::seconds(5));
*
* // Wait for the timer to expire.
* timer.wait();
* @endcode
*
* @par
* Performing an asynchronous wait (C++11):
* @code
* void handler(const asio::error_code& error)
* {
* if (!error)
* {
* // Timer expired.
* }
* }
*
* ...
*
* // Construct a timer with an absolute expiry time.
* asio::steady_timer timer(io_context,
* std::chrono::steady_clock::now() + std::chrono::seconds(60));
*
* // Start an asynchronous wait.
* timer.async_wait(handler);
* @endcode
*
* @par Changing an active waitable timer's expiry time
*
* Changing the expiry time of a timer while there are pending asynchronous
* waits causes those wait operations to be cancelled. To ensure that the action
* associated with the timer is performed only once, use something like this:
* used:
*
* @code
* void on_some_event()
* {
* if (my_timer.expires_after(seconds(5)) > 0)
* {
* // We managed to cancel the timer. Start new asynchronous wait.
* my_timer.async_wait(on_timeout);
* }
* else
* {
* // Too late, timer has already expired!
* }
* }
*
* void on_timeout(const asio::error_code& e)
* {
* if (e != asio::error::operation_aborted)
* {
* // Timer was not cancelled, take necessary action.
* }
* }
* @endcode
*
* @li The asio::basic_waitable_timer::expires_after() function
* cancels any pending asynchronous waits, and returns the number of
* asynchronous waits that were cancelled. If it returns 0 then you were too
* late and the wait handler has already been executed, or will soon be
* executed. If it returns 1 then the wait handler was successfully cancelled.
*
* @li If a wait handler is cancelled, the asio::error_code passed to
* it contains the value asio::error::operation_aborted.
*/
template <typename Clock, typename WaitTraits ASIO_SVC_TPARAM>
class basic_waitable_timer
: ASIO_SVC_ACCESS basic_io_object<ASIO_SVC_T>
{
public:
/// The type of the executor associated with the object.
typedef io_context::executor_type executor_type;
/// The clock type.
typedef Clock clock_type;
/// The duration type of the clock.
typedef typename clock_type::duration duration;
/// The time point type of the clock.
typedef typename clock_type::time_point time_point;
/// The wait traits type.
typedef WaitTraits traits_type;
/// Constructor.
/**
* This constructor creates a timer without setting an expiry time. The
* expires_at() or expires_after() functions must be called to set an expiry
* time before the timer can be waited on.
*
* @param io_context The io_context object that the timer will use to dispatch
* handlers for any asynchronous operations performed on the timer.
*/
explicit basic_waitable_timer(asio::io_context& io_context)
: basic_io_object<ASIO_SVC_T>(io_context)
{
}
/// Constructor to set a particular expiry time as an absolute time.
/**
* This constructor creates a timer and sets the expiry time.
*
* @param io_context The io_context object that the timer will use to dispatch
* handlers for any asynchronous operations performed on the timer.
*
* @param expiry_time The expiry time to be used for the timer, expressed
* as an absolute time.
*/
basic_waitable_timer(asio::io_context& io_context,
const time_point& expiry_time)
: basic_io_object<ASIO_SVC_T>(io_context)
{
asio::error_code ec;
this->get_service().expires_at(this->get_implementation(), expiry_time, ec);
asio::detail::throw_error(ec, "expires_at");
}
/// Constructor to set a particular expiry time relative to now.
/**
* This constructor creates a timer and sets the expiry time.
*
* @param io_context The io_context object that the timer will use to dispatch
* handlers for any asynchronous operations performed on the timer.
*
* @param expiry_time The expiry time to be used for the timer, relative to
* now.
*/
basic_waitable_timer(asio::io_context& io_context,
const duration& expiry_time)
: basic_io_object<ASIO_SVC_T>(io_context)
{
asio::error_code ec;
this->get_service().expires_after(
this->get_implementation(), expiry_time, ec);
asio::detail::throw_error(ec, "expires_after");
}
#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Move-construct a basic_waitable_timer from another.
/**
* This constructor moves a timer from one object to another.
*
* @param other The other basic_waitable_timer object from which the move will
* occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_waitable_timer(io_context&) constructor.
*/
basic_waitable_timer(basic_waitable_timer&& other)
: basic_io_object<ASIO_SVC_T>(std::move(other))
{
}
/// Move-assign a basic_waitable_timer from another.
/**
* This assignment operator moves a timer from one object to another. Cancels
* any outstanding asynchronous operations associated with the target object.
*
* @param other The other basic_waitable_timer object from which the move will
* occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_waitable_timer(io_context&) constructor.
*/
basic_waitable_timer& operator=(basic_waitable_timer&& other)
{
basic_io_object<ASIO_SVC_T>::operator=(std::move(other));
return *this;
}
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Destroys the timer.
/**
* This function destroys the timer, cancelling any outstanding asynchronous
* wait operations associated with the timer as if by calling @c cancel.
*/
~basic_waitable_timer()
{
}
#if defined(ASIO_ENABLE_OLD_SERVICES)
// These functions are provided by basic_io_object<>.
#else // defined(ASIO_ENABLE_OLD_SERVICES)
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use get_executor().) Get the io_context associated with the
/// object.
/**
* This function may be used to obtain the io_context object that the I/O
* object uses to dispatch handlers for asynchronous operations.
*
* @return A reference to the io_context object that the I/O object will use
* to dispatch handlers. Ownership is not transferred to the caller.
*/
asio::io_context& get_io_context()
{
return basic_io_object<ASIO_SVC_T>::get_io_context();
}
/// (Deprecated: Use get_executor().) Get the io_context associated with the
/// object.
/**
* This function may be used to obtain the io_context object that the I/O
* object uses to dispatch handlers for asynchronous operations.
*
* @return A reference to the io_context object that the I/O object will use
* to dispatch handlers. Ownership is not transferred to the caller.
*/
asio::io_context& get_io_service()
{
return basic_io_object<ASIO_SVC_T>::get_io_service();
}
#endif // !defined(ASIO_NO_DEPRECATED)
/// Get the executor associated with the object.
executor_type get_executor() ASIO_NOEXCEPT
{
return basic_io_object<ASIO_SVC_T>::get_executor();
}
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
/// Cancel any asynchronous operations that are waiting on the timer.
/**
* This function forces the completion of any pending asynchronous wait
* operations against the timer. The handler for each cancelled operation will
* be invoked with the asio::error::operation_aborted error code.
*
* Cancelling the timer does not change the expiry time.
*
* @return The number of asynchronous operations that were cancelled.
*
* @throws asio::system_error Thrown on failure.
*
* @note If the timer has already expired when cancel() is called, then the
* handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t cancel()
{
asio::error_code ec;
std::size_t s = this->get_service().cancel(this->get_implementation(), ec);
asio::detail::throw_error(ec, "cancel");
return s;
}
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use non-error_code overload.) Cancel any asynchronous
/// operations that are waiting on the timer.
/**
* This function forces the completion of any pending asynchronous wait
* operations against the timer. The handler for each cancelled operation will
* be invoked with the asio::error::operation_aborted error code.
*
* Cancelling the timer does not change the expiry time.
*
* @param ec Set to indicate what error occurred, if any.
*
* @return The number of asynchronous operations that were cancelled.
*
* @note If the timer has already expired when cancel() is called, then the
* handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t cancel(asio::error_code& ec)
{
return this->get_service().cancel(this->get_implementation(), ec);
}
#endif // !defined(ASIO_NO_DEPRECATED)
/// Cancels one asynchronous operation that is waiting on the timer.
/**
* This function forces the completion of one pending asynchronous wait
* operation against the timer. Handlers are cancelled in FIFO order. The
* handler for the cancelled operation will be invoked with the
* asio::error::operation_aborted error code.
*
* Cancelling the timer does not change the expiry time.
*
* @return The number of asynchronous operations that were cancelled. That is,
* either 0 or 1.
*
* @throws asio::system_error Thrown on failure.
*
* @note If the timer has already expired when cancel_one() is called, then
* the handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t cancel_one()
{
asio::error_code ec;
std::size_t s = this->get_service().cancel_one(
this->get_implementation(), ec);
asio::detail::throw_error(ec, "cancel_one");
return s;
}
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use non-error_code overload.) Cancels one asynchronous
/// operation that is waiting on the timer.
/**
* This function forces the completion of one pending asynchronous wait
* operation against the timer. Handlers are cancelled in FIFO order. The
* handler for the cancelled operation will be invoked with the
* asio::error::operation_aborted error code.
*
* Cancelling the timer does not change the expiry time.
*
* @param ec Set to indicate what error occurred, if any.
*
* @return The number of asynchronous operations that were cancelled. That is,
* either 0 or 1.
*
* @note If the timer has already expired when cancel_one() is called, then
* the handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t cancel_one(asio::error_code& ec)
{
return this->get_service().cancel_one(this->get_implementation(), ec);
}
/// (Deprecated: Use expiry().) Get the timer's expiry time as an absolute
/// time.
/**
* This function may be used to obtain the timer's current expiry time.
* Whether the timer has expired or not does not affect this value.
*/
time_point expires_at() const
{
return this->get_service().expires_at(this->get_implementation());
}
#endif // !defined(ASIO_NO_DEPRECATED)
/// Get the timer's expiry time as an absolute time.
/**
* This function may be used to obtain the timer's current expiry time.
* Whether the timer has expired or not does not affect this value.
*/
time_point expiry() const
{
return this->get_service().expiry(this->get_implementation());
}
/// Set the timer's expiry time as an absolute time.
/**
* This function sets the expiry time. Any pending asynchronous wait
* operations will be cancelled. The handler for each cancelled operation will
* be invoked with the asio::error::operation_aborted error code.
*
* @param expiry_time The expiry time to be used for the timer.
*
* @return The number of asynchronous operations that were cancelled.
*
* @throws asio::system_error Thrown on failure.
*
* @note If the timer has already expired when expires_at() is called, then
* the handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t expires_at(const time_point& expiry_time)
{
asio::error_code ec;
std::size_t s = this->get_service().expires_at(
this->get_implementation(), expiry_time, ec);
asio::detail::throw_error(ec, "expires_at");
return s;
}
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use non-error_code overload.) Set the timer's expiry time as
/// an absolute time.
/**
* This function sets the expiry time. Any pending asynchronous wait
* operations will be cancelled. The handler for each cancelled operation will
* be invoked with the asio::error::operation_aborted error code.
*
* @param expiry_time The expiry time to be used for the timer.
*
* @param ec Set to indicate what error occurred, if any.
*
* @return The number of asynchronous operations that were cancelled.
*
* @note If the timer has already expired when expires_at() is called, then
* the handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t expires_at(const time_point& expiry_time,
asio::error_code& ec)
{
return this->get_service().expires_at(
this->get_implementation(), expiry_time, ec);
}
#endif // !defined(ASIO_NO_DEPRECATED)
/// Set the timer's expiry time relative to now.
/**
* This function sets the expiry time. Any pending asynchronous wait
* operations will be cancelled. The handler for each cancelled operation will
* be invoked with the asio::error::operation_aborted error code.
*
* @param expiry_time The expiry time to be used for the timer.
*
* @return The number of asynchronous operations that were cancelled.
*
* @throws asio::system_error Thrown on failure.
*
* @note If the timer has already expired when expires_after() is called,
* then the handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t expires_after(const duration& expiry_time)
{
asio::error_code ec;
std::size_t s = this->get_service().expires_after(
this->get_implementation(), expiry_time, ec);
asio::detail::throw_error(ec, "expires_after");
return s;
}
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use expiry().) Get the timer's expiry time relative to now.
/**
* This function may be used to obtain the timer's current expiry time.
* Whether the timer has expired or not does not affect this value.
*/
duration expires_from_now() const
{
return this->get_service().expires_from_now(this->get_implementation());
}
/// (Deprecated: Use expires_after().) Set the timer's expiry time relative
/// to now.
/**
* This function sets the expiry time. Any pending asynchronous wait
* operations will be cancelled. The handler for each cancelled operation will
* be invoked with the asio::error::operation_aborted error code.
*
* @param expiry_time The expiry time to be used for the timer.
*
* @return The number of asynchronous operations that were cancelled.
*
* @throws asio::system_error Thrown on failure.
*
* @note If the timer has already expired when expires_from_now() is called,
* then the handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t expires_from_now(const duration& expiry_time)
{
asio::error_code ec;
std::size_t s = this->get_service().expires_from_now(
this->get_implementation(), expiry_time, ec);
asio::detail::throw_error(ec, "expires_from_now");
return s;
}
/// (Deprecated: Use expires_after().) Set the timer's expiry time relative
/// to now.
/**
* This function sets the expiry time. Any pending asynchronous wait
* operations will be cancelled. The handler for each cancelled operation will
* be invoked with the asio::error::operation_aborted error code.
*
* @param expiry_time The expiry time to be used for the timer.
*
* @param ec Set to indicate what error occurred, if any.
*
* @return The number of asynchronous operations that were cancelled.
*
* @note If the timer has already expired when expires_from_now() is called,
* then the handlers for asynchronous wait operations will:
*
* @li have already been invoked; or
*
* @li have been queued for invocation in the near future.
*
* These handlers can no longer be cancelled, and therefore are passed an
* error code that indicates the successful completion of the wait operation.
*/
std::size_t expires_from_now(const duration& expiry_time,
asio::error_code& ec)
{
return this->get_service().expires_from_now(
this->get_implementation(), expiry_time, ec);
}
#endif // !defined(ASIO_NO_DEPRECATED)
/// Perform a blocking wait on the timer.
/**
* This function is used to wait for the timer to expire. This function
* blocks and does not return until the timer has expired.
*
* @throws asio::system_error Thrown on failure.
*/
void wait()
{
asio::error_code ec;
this->get_service().wait(this->get_implementation(), ec);
asio::detail::throw_error(ec, "wait");
}
/// Perform a blocking wait on the timer.
/**
* This function is used to wait for the timer to expire. This function
* blocks and does not return until the timer has expired.
*
* @param ec Set to indicate what error occurred, if any.
*/
void wait(asio::error_code& ec)
{
this->get_service().wait(this->get_implementation(), ec);
}
/// Start an asynchronous wait on the timer.
/**
* This function may be used to initiate an asynchronous wait against the
* timer. It always returns immediately.
*
* For each call to async_wait(), the supplied handler will be called exactly
* once. The handler will be called when:
*
* @li The timer has expired.
*
* @li The timer was cancelled, in which case the handler is passed the error
* code asio::error::operation_aborted.
*
* @param handler The handler to be called when the timer expires. Copies
* will be made of the handler as required. The function signature of the
* handler must be:
* @code void handler(
* const asio::error_code& error // Result of operation.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*/
template <typename WaitHandler>
ASIO_INITFN_RESULT_TYPE(WaitHandler,
void (asio::error_code))
async_wait(ASIO_MOVE_ARG(WaitHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a WaitHandler.
ASIO_WAIT_HANDLER_CHECK(WaitHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_wait(this->get_implementation(),
ASIO_MOVE_CAST(WaitHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<WaitHandler,
void (asio::error_code)> init(handler);
this->get_service().async_wait(this->get_implementation(),
init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
private:
// Disallow copying and assignment.
basic_waitable_timer(const basic_waitable_timer&) ASIO_DELETED;
basic_waitable_timer& operator=(
const basic_waitable_timer&) ASIO_DELETED;
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#if !defined(ASIO_ENABLE_OLD_SERVICES)
# undef ASIO_SVC_T
#endif // !defined(ASIO_ENABLE_OLD_SERVICES)
#endif // ASIO_BASIC_WAITABLE_TIMER_HPP

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//
// bind_executor.hpp
// ~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BIND_EXECUTOR_HPP
#define ASIO_BIND_EXECUTOR_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/detail/type_traits.hpp"
#include "asio/detail/variadic_templates.hpp"
#include "asio/associated_executor.hpp"
#include "asio/associated_allocator.hpp"
#include "asio/async_result.hpp"
#include "asio/execution_context.hpp"
#include "asio/is_executor.hpp"
#include "asio/uses_executor.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
template <typename T>
struct executor_binder_check
{
typedef void type;
};
// Helper to automatically define nested typedef result_type.
template <typename T, typename = void>
struct executor_binder_result_type
{
protected:
typedef void result_type_or_void;
};
template <typename T>
struct executor_binder_result_type<T,
typename executor_binder_check<typename T::result_type>::type>
{
typedef typename T::result_type result_type;
protected:
typedef result_type result_type_or_void;
};
template <typename R>
struct executor_binder_result_type<R(*)()>
{
typedef R result_type;
protected:
typedef result_type result_type_or_void;
};
template <typename R>
struct executor_binder_result_type<R(&)()>
{
typedef R result_type;
protected:
typedef result_type result_type_or_void;
};
template <typename R, typename A1>
struct executor_binder_result_type<R(*)(A1)>
{
typedef R result_type;
protected:
typedef result_type result_type_or_void;
};
template <typename R, typename A1>
struct executor_binder_result_type<R(&)(A1)>
{
typedef R result_type;
protected:
typedef result_type result_type_or_void;
};
template <typename R, typename A1, typename A2>
struct executor_binder_result_type<R(*)(A1, A2)>
{
typedef R result_type;
protected:
typedef result_type result_type_or_void;
};
template <typename R, typename A1, typename A2>
struct executor_binder_result_type<R(&)(A1, A2)>
{
typedef R result_type;
protected:
typedef result_type result_type_or_void;
};
// Helper to automatically define nested typedef argument_type.
template <typename T, typename = void>
struct executor_binder_argument_type {};
template <typename T>
struct executor_binder_argument_type<T,
typename executor_binder_check<typename T::argument_type>::type>
{
typedef typename T::argument_type argument_type;
};
template <typename R, typename A1>
struct executor_binder_argument_type<R(*)(A1)>
{
typedef A1 argument_type;
};
template <typename R, typename A1>
struct executor_binder_argument_type<R(&)(A1)>
{
typedef A1 argument_type;
};
// Helper to automatically define nested typedefs first_argument_type and
// second_argument_type.
template <typename T, typename = void>
struct executor_binder_argument_types {};
template <typename T>
struct executor_binder_argument_types<T,
typename executor_binder_check<typename T::first_argument_type>::type>
{
typedef typename T::first_argument_type first_argument_type;
typedef typename T::second_argument_type second_argument_type;
};
template <typename R, typename A1, typename A2>
struct executor_binder_argument_type<R(*)(A1, A2)>
{
typedef A1 first_argument_type;
typedef A2 second_argument_type;
};
template <typename R, typename A1, typename A2>
struct executor_binder_argument_type<R(&)(A1, A2)>
{
typedef A1 first_argument_type;
typedef A2 second_argument_type;
};
// Helper to:
// - Apply the empty base optimisation to the executor.
// - Perform uses_executor construction of the target type, if required.
template <typename T, typename Executor, bool UsesExecutor>
class executor_binder_base;
template <typename T, typename Executor>
class executor_binder_base<T, Executor, true>
: protected Executor
{
protected:
template <typename E, typename U>
executor_binder_base(ASIO_MOVE_ARG(E) e, ASIO_MOVE_ARG(U) u)
: executor_(ASIO_MOVE_CAST(E)(e)),
target_(executor_arg_t(), executor_, ASIO_MOVE_CAST(U)(u))
{
}
Executor executor_;
T target_;
};
template <typename T, typename Executor>
class executor_binder_base<T, Executor, false>
{
protected:
template <typename E, typename U>
executor_binder_base(ASIO_MOVE_ARG(E) e, ASIO_MOVE_ARG(U) u)
: executor_(ASIO_MOVE_CAST(E)(e)),
target_(ASIO_MOVE_CAST(U)(u))
{
}
Executor executor_;
T target_;
};
// Helper to enable SFINAE on zero-argument operator() below.
template <typename T, typename = void>
struct executor_binder_result_of0
{
typedef void type;
};
template <typename T>
struct executor_binder_result_of0<T,
typename executor_binder_check<typename result_of<T()>::type>::type>
{
typedef typename result_of<T()>::type type;
};
} // namespace detail
/// A call wrapper type to bind an executor of type @c Executor to an object of
/// type @c T.
template <typename T, typename Executor>
class executor_binder
#if !defined(GENERATING_DOCUMENTATION)
: public detail::executor_binder_result_type<T>,
public detail::executor_binder_argument_type<T>,
public detail::executor_binder_argument_types<T>,
private detail::executor_binder_base<
T, Executor, uses_executor<T, Executor>::value>
#endif // !defined(GENERATING_DOCUMENTATION)
{
public:
/// The type of the target object.
typedef T target_type;
/// The type of the associated executor.
typedef Executor executor_type;
#if defined(GENERATING_DOCUMENTATION)
/// The return type if a function.
/**
* The type of @c result_type is based on the type @c T of the wrapper's
* target object:
*
* @li if @c T is a pointer to function type, @c result_type is a synonym for
* the return type of @c T;
*
* @li if @c T is a class type with a member type @c result_type, then @c
* result_type is a synonym for @c T::result_type;
*
* @li otherwise @c result_type is not defined.
*/
typedef see_below result_type;
/// The type of the function's argument.
/**
* The type of @c argument_type is based on the type @c T of the wrapper's
* target object:
*
* @li if @c T is a pointer to a function type accepting a single argument,
* @c argument_type is a synonym for the return type of @c T;
*
* @li if @c T is a class type with a member type @c argument_type, then @c
* argument_type is a synonym for @c T::argument_type;
*
* @li otherwise @c argument_type is not defined.
*/
typedef see_below argument_type;
/// The type of the function's first argument.
/**
* The type of @c first_argument_type is based on the type @c T of the
* wrapper's target object:
*
* @li if @c T is a pointer to a function type accepting two arguments, @c
* first_argument_type is a synonym for the return type of @c T;
*
* @li if @c T is a class type with a member type @c first_argument_type,
* then @c first_argument_type is a synonym for @c T::first_argument_type;
*
* @li otherwise @c first_argument_type is not defined.
*/
typedef see_below first_argument_type;
/// The type of the function's second argument.
/**
* The type of @c second_argument_type is based on the type @c T of the
* wrapper's target object:
*
* @li if @c T is a pointer to a function type accepting two arguments, @c
* second_argument_type is a synonym for the return type of @c T;
*
* @li if @c T is a class type with a member type @c first_argument_type,
* then @c second_argument_type is a synonym for @c T::second_argument_type;
*
* @li otherwise @c second_argument_type is not defined.
*/
typedef see_below second_argument_type;
#endif // defined(GENERATING_DOCUMENTATION)
/// Construct an executor wrapper for the specified object.
/**
* This constructor is only valid if the type @c T is constructible from type
* @c U.
*/
template <typename U>
executor_binder(executor_arg_t, const executor_type& e,
ASIO_MOVE_ARG(U) u)
: base_type(e, ASIO_MOVE_CAST(U)(u))
{
}
/// Copy constructor.
executor_binder(const executor_binder& other)
: base_type(other.get_executor(), other.get())
{
}
/// Construct a copy, but specify a different executor.
executor_binder(executor_arg_t, const executor_type& e,
const executor_binder& other)
: base_type(e, other.get())
{
}
/// Construct a copy of a different executor wrapper type.
/**
* This constructor is only valid if the @c Executor type is constructible
* from type @c OtherExecutor, and the type @c T is constructible from type
* @c U.
*/
template <typename U, typename OtherExecutor>
executor_binder(const executor_binder<U, OtherExecutor>& other)
: base_type(other.get_executor(), other.get())
{
}
/// Construct a copy of a different executor wrapper type, but specify a
/// different executor.
/**
* This constructor is only valid if the type @c T is constructible from type
* @c U.
*/
template <typename U, typename OtherExecutor>
executor_binder(executor_arg_t, const executor_type& e,
const executor_binder<U, OtherExecutor>& other)
: base_type(e, other.get())
{
}
#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Move constructor.
executor_binder(executor_binder&& other)
: base_type(ASIO_MOVE_CAST(executor_type)(other.get_executor()),
ASIO_MOVE_CAST(T)(other.get()))
{
}
/// Move construct the target object, but specify a different executor.
executor_binder(executor_arg_t, const executor_type& e,
executor_binder&& other)
: base_type(e, ASIO_MOVE_CAST(T)(other.get()))
{
}
/// Move construct from a different executor wrapper type.
template <typename U, typename OtherExecutor>
executor_binder(executor_binder<U, OtherExecutor>&& other)
: base_type(ASIO_MOVE_CAST(OtherExecutor)(other.get_executor()),
ASIO_MOVE_CAST(U)(other.get()))
{
}
/// Move construct from a different executor wrapper type, but specify a
/// different executor.
template <typename U, typename OtherExecutor>
executor_binder(executor_arg_t, const executor_type& e,
executor_binder<U, OtherExecutor>&& other)
: base_type(e, ASIO_MOVE_CAST(U)(other.get()))
{
}
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Destructor.
~executor_binder()
{
}
/// Obtain a reference to the target object.
target_type& get() ASIO_NOEXCEPT
{
return this->target_;
}
/// Obtain a reference to the target object.
const target_type& get() const ASIO_NOEXCEPT
{
return this->target_;
}
/// Obtain the associated executor.
executor_type get_executor() const ASIO_NOEXCEPT
{
return this->executor_;
}
#if defined(GENERATING_DOCUMENTATION)
template <typename... Args> auto operator()(Args&& ...);
template <typename... Args> auto operator()(Args&& ...) const;
#elif defined(ASIO_HAS_VARIADIC_TEMPLATES)
/// Forwarding function call operator.
template <typename... Args>
typename result_of<T(Args...)>::type operator()(
ASIO_MOVE_ARG(Args)... args)
{
return this->target_(ASIO_MOVE_CAST(Args)(args)...);
}
/// Forwarding function call operator.
template <typename... Args>
typename result_of<T(Args...)>::type operator()(
ASIO_MOVE_ARG(Args)... args) const
{
return this->target_(ASIO_MOVE_CAST(Args)(args)...);
}
#elif defined(ASIO_HAS_STD_TYPE_TRAITS) && !defined(_MSC_VER)
typename detail::executor_binder_result_of0<T>::type operator()()
{
return this->target_();
}
typename detail::executor_binder_result_of0<T>::type operator()() const
{
return this->target_();
}
#define ASIO_PRIVATE_BIND_EXECUTOR_CALL_DEF(n) \
template <ASIO_VARIADIC_TPARAMS(n)> \
typename result_of<T(ASIO_VARIADIC_TARGS(n))>::type operator()( \
ASIO_VARIADIC_MOVE_PARAMS(n)) \
{ \
return this->target_(ASIO_VARIADIC_MOVE_ARGS(n)); \
} \
\
template <ASIO_VARIADIC_TPARAMS(n)> \
typename result_of<T(ASIO_VARIADIC_TARGS(n))>::type operator()( \
ASIO_VARIADIC_MOVE_PARAMS(n)) const \
{ \
return this->target_(ASIO_VARIADIC_MOVE_ARGS(n)); \
} \
/**/
ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_BIND_EXECUTOR_CALL_DEF)
#undef ASIO_PRIVATE_BIND_EXECUTOR_CALL_DEF
#else // defined(ASIO_HAS_STD_TYPE_TRAITS) && !defined(_MSC_VER)
typedef typename detail::executor_binder_result_type<T>::result_type_or_void
result_type_or_void;
result_type_or_void operator()()
{
return this->target_();
}
result_type_or_void operator()() const
{
return this->target_();
}
#define ASIO_PRIVATE_BIND_EXECUTOR_CALL_DEF(n) \
template <ASIO_VARIADIC_TPARAMS(n)> \
result_type_or_void operator()( \
ASIO_VARIADIC_MOVE_PARAMS(n)) \
{ \
return this->target_(ASIO_VARIADIC_MOVE_ARGS(n)); \
} \
\
template <ASIO_VARIADIC_TPARAMS(n)> \
result_type_or_void operator()( \
ASIO_VARIADIC_MOVE_PARAMS(n)) const \
{ \
return this->target_(ASIO_VARIADIC_MOVE_ARGS(n)); \
} \
/**/
ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_BIND_EXECUTOR_CALL_DEF)
#undef ASIO_PRIVATE_BIND_EXECUTOR_CALL_DEF
#endif // defined(ASIO_HAS_STD_TYPE_TRAITS) && !defined(_MSC_VER)
private:
typedef detail::executor_binder_base<T, Executor,
uses_executor<T, Executor>::value> base_type;
};
/// Associate an object of type @c T with an executor of type @c Executor.
template <typename Executor, typename T>
inline executor_binder<typename decay<T>::type, Executor>
bind_executor(const Executor& ex, ASIO_MOVE_ARG(T) t,
typename enable_if<is_executor<Executor>::value>::type* = 0)
{
return executor_binder<typename decay<T>::type, Executor>(
executor_arg_t(), ex, ASIO_MOVE_CAST(T)(t));
}
/// Associate an object of type @c T with an execution context's executor.
template <typename ExecutionContext, typename T>
inline executor_binder<typename decay<T>::type,
typename ExecutionContext::executor_type>
bind_executor(ExecutionContext& ctx, ASIO_MOVE_ARG(T) t,
typename enable_if<is_convertible<
ExecutionContext&, execution_context&>::value>::type* = 0)
{
return executor_binder<typename decay<T>::type,
typename ExecutionContext::executor_type>(
executor_arg_t(), ctx.get_executor(), ASIO_MOVE_CAST(T)(t));
}
#if !defined(GENERATING_DOCUMENTATION)
template <typename T, typename Executor>
struct uses_executor<executor_binder<T, Executor>, Executor>
: true_type {};
template <typename T, typename Executor, typename Signature>
class async_result<executor_binder<T, Executor>, Signature>
{
public:
typedef executor_binder<
typename async_result<T, Signature>::completion_handler_type, Executor>
completion_handler_type;
typedef typename async_result<T, Signature>::return_type return_type;
explicit async_result(executor_binder<T, Executor>& b)
: target_(b.get())
{
}
return_type get()
{
return target_.get();
}
private:
async_result(const async_result&) ASIO_DELETED;
async_result& operator=(const async_result&) ASIO_DELETED;
async_result<T, Signature> target_;
};
#if !defined(ASIO_NO_DEPRECATED)
template <typename T, typename Executor, typename Signature>
struct handler_type<executor_binder<T, Executor>, Signature>
{
typedef executor_binder<
typename handler_type<T, Signature>::type, Executor> type;
};
template <typename T, typename Executor>
class async_result<executor_binder<T, Executor> >
{
public:
typedef typename async_result<T>::type type;
explicit async_result(executor_binder<T, Executor>& b)
: target_(b.get())
{
}
type get()
{
return target_.get();
}
private:
async_result<T> target_;
};
#endif // !defined(ASIO_NO_DEPRECATED)
template <typename T, typename Executor, typename Allocator>
struct associated_allocator<executor_binder<T, Executor>, Allocator>
{
typedef typename associated_allocator<T, Allocator>::type type;
static type get(const executor_binder<T, Executor>& b,
const Allocator& a = Allocator()) ASIO_NOEXCEPT
{
return associated_allocator<T, Allocator>::get(b.get(), a);
}
};
template <typename T, typename Executor, typename Executor1>
struct associated_executor<executor_binder<T, Executor>, Executor1>
{
typedef Executor type;
static type get(const executor_binder<T, Executor>& b,
const Executor1& = Executor1()) ASIO_NOEXCEPT
{
return b.get_executor();
}
};
#endif // !defined(GENERATING_DOCUMENTATION)
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_BIND_EXECUTOR_HPP

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//
// buffered_read_stream.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BUFFERED_READ_STREAM_HPP
#define ASIO_BUFFERED_READ_STREAM_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <cstddef>
#include "asio/async_result.hpp"
#include "asio/buffered_read_stream_fwd.hpp"
#include "asio/buffer.hpp"
#include "asio/detail/bind_handler.hpp"
#include "asio/detail/buffer_resize_guard.hpp"
#include "asio/detail/buffered_stream_storage.hpp"
#include "asio/detail/noncopyable.hpp"
#include "asio/detail/type_traits.hpp"
#include "asio/error.hpp"
#include "asio/io_context.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
/// Adds buffering to the read-related operations of a stream.
/**
* The buffered_read_stream class template can be used to add buffering to the
* synchronous and asynchronous read operations of a stream.
*
* @par Thread Safety
* @e Distinct @e objects: Safe.@n
* @e Shared @e objects: Unsafe.
*
* @par Concepts:
* AsyncReadStream, AsyncWriteStream, Stream, SyncReadStream, SyncWriteStream.
*/
template <typename Stream>
class buffered_read_stream
: private noncopyable
{
public:
/// The type of the next layer.
typedef typename remove_reference<Stream>::type next_layer_type;
/// The type of the lowest layer.
typedef typename next_layer_type::lowest_layer_type lowest_layer_type;
/// The type of the executor associated with the object.
typedef typename lowest_layer_type::executor_type executor_type;
#if defined(GENERATING_DOCUMENTATION)
/// The default buffer size.
static const std::size_t default_buffer_size = implementation_defined;
#else
ASIO_STATIC_CONSTANT(std::size_t, default_buffer_size = 1024);
#endif
/// Construct, passing the specified argument to initialise the next layer.
template <typename Arg>
explicit buffered_read_stream(Arg& a)
: next_layer_(a),
storage_(default_buffer_size)
{
}
/// Construct, passing the specified argument to initialise the next layer.
template <typename Arg>
buffered_read_stream(Arg& a, std::size_t buffer_size)
: next_layer_(a),
storage_(buffer_size)
{
}
/// Get a reference to the next layer.
next_layer_type& next_layer()
{
return next_layer_;
}
/// Get a reference to the lowest layer.
lowest_layer_type& lowest_layer()
{
return next_layer_.lowest_layer();
}
/// Get a const reference to the lowest layer.
const lowest_layer_type& lowest_layer() const
{
return next_layer_.lowest_layer();
}
/// Get the executor associated with the object.
executor_type get_executor() ASIO_NOEXCEPT
{
return next_layer_.lowest_layer().get_executor();
}
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use get_executor().) Get the io_context associated with the
/// object.
asio::io_context& get_io_context()
{
return next_layer_.get_io_context();
}
/// (Deprecated: Use get_executor().) Get the io_context associated with the
/// object.
asio::io_context& get_io_service()
{
return next_layer_.get_io_service();
}
#endif // !defined(ASIO_NO_DEPRECATED)
/// Close the stream.
void close()
{
next_layer_.close();
}
/// Close the stream.
ASIO_SYNC_OP_VOID close(asio::error_code& ec)
{
next_layer_.close(ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Write the given data to the stream. Returns the number of bytes written.
/// Throws an exception on failure.
template <typename ConstBufferSequence>
std::size_t write_some(const ConstBufferSequence& buffers)
{
return next_layer_.write_some(buffers);
}
/// Write the given data to the stream. Returns the number of bytes written,
/// or 0 if an error occurred.
template <typename ConstBufferSequence>
std::size_t write_some(const ConstBufferSequence& buffers,
asio::error_code& ec)
{
return next_layer_.write_some(buffers, ec);
}
/// Start an asynchronous write. The data being written must be valid for the
/// lifetime of the asynchronous operation.
template <typename ConstBufferSequence, typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_write_some(const ConstBufferSequence& buffers,
ASIO_MOVE_ARG(WriteHandler) handler)
{
return next_layer_.async_write_some(buffers,
ASIO_MOVE_CAST(WriteHandler)(handler));
}
/// Fill the buffer with some data. Returns the number of bytes placed in the
/// buffer as a result of the operation. Throws an exception on failure.
std::size_t fill();
/// Fill the buffer with some data. Returns the number of bytes placed in the
/// buffer as a result of the operation, or 0 if an error occurred.
std::size_t fill(asio::error_code& ec);
/// Start an asynchronous fill.
template <typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_fill(ASIO_MOVE_ARG(ReadHandler) handler);
/// Read some data from the stream. Returns the number of bytes read. Throws
/// an exception on failure.
template <typename MutableBufferSequence>
std::size_t read_some(const MutableBufferSequence& buffers);
/// Read some data from the stream. Returns the number of bytes read or 0 if
/// an error occurred.
template <typename MutableBufferSequence>
std::size_t read_some(const MutableBufferSequence& buffers,
asio::error_code& ec);
/// Start an asynchronous read. The buffer into which the data will be read
/// must be valid for the lifetime of the asynchronous operation.
template <typename MutableBufferSequence, typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_read_some(const MutableBufferSequence& buffers,
ASIO_MOVE_ARG(ReadHandler) handler);
/// Peek at the incoming data on the stream. Returns the number of bytes read.
/// Throws an exception on failure.
template <typename MutableBufferSequence>
std::size_t peek(const MutableBufferSequence& buffers);
/// Peek at the incoming data on the stream. Returns the number of bytes read,
/// or 0 if an error occurred.
template <typename MutableBufferSequence>
std::size_t peek(const MutableBufferSequence& buffers,
asio::error_code& ec);
/// Determine the amount of data that may be read without blocking.
std::size_t in_avail()
{
return storage_.size();
}
/// Determine the amount of data that may be read without blocking.
std::size_t in_avail(asio::error_code& ec)
{
ec = asio::error_code();
return storage_.size();
}
private:
/// Copy data out of the internal buffer to the specified target buffer.
/// Returns the number of bytes copied.
template <typename MutableBufferSequence>
std::size_t copy(const MutableBufferSequence& buffers)
{
std::size_t bytes_copied = asio::buffer_copy(
buffers, storage_.data(), storage_.size());
storage_.consume(bytes_copied);
return bytes_copied;
}
/// Copy data from the internal buffer to the specified target buffer, without
/// removing the data from the internal buffer. Returns the number of bytes
/// copied.
template <typename MutableBufferSequence>
std::size_t peek_copy(const MutableBufferSequence& buffers)
{
return asio::buffer_copy(buffers, storage_.data(), storage_.size());
}
/// The next layer.
Stream next_layer_;
// The data in the buffer.
detail::buffered_stream_storage storage_;
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#include "asio/impl/buffered_read_stream.hpp"
#endif // ASIO_BUFFERED_READ_STREAM_HPP

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//
// buffered_read_stream_fwd.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BUFFERED_READ_STREAM_FWD_HPP
#define ASIO_BUFFERED_READ_STREAM_FWD_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
namespace asio {
template <typename Stream>
class buffered_read_stream;
} // namespace asio
#endif // ASIO_BUFFERED_READ_STREAM_FWD_HPP

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//
// buffered_stream.hpp
// ~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BUFFERED_STREAM_HPP
#define ASIO_BUFFERED_STREAM_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <cstddef>
#include "asio/async_result.hpp"
#include "asio/buffered_read_stream.hpp"
#include "asio/buffered_write_stream.hpp"
#include "asio/buffered_stream_fwd.hpp"
#include "asio/detail/noncopyable.hpp"
#include "asio/error.hpp"
#include "asio/io_context.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
/// Adds buffering to the read- and write-related operations of a stream.
/**
* The buffered_stream class template can be used to add buffering to the
* synchronous and asynchronous read and write operations of a stream.
*
* @par Thread Safety
* @e Distinct @e objects: Safe.@n
* @e Shared @e objects: Unsafe.
*
* @par Concepts:
* AsyncReadStream, AsyncWriteStream, Stream, SyncReadStream, SyncWriteStream.
*/
template <typename Stream>
class buffered_stream
: private noncopyable
{
public:
/// The type of the next layer.
typedef typename remove_reference<Stream>::type next_layer_type;
/// The type of the lowest layer.
typedef typename next_layer_type::lowest_layer_type lowest_layer_type;
/// The type of the executor associated with the object.
typedef typename lowest_layer_type::executor_type executor_type;
/// Construct, passing the specified argument to initialise the next layer.
template <typename Arg>
explicit buffered_stream(Arg& a)
: inner_stream_impl_(a),
stream_impl_(inner_stream_impl_)
{
}
/// Construct, passing the specified argument to initialise the next layer.
template <typename Arg>
explicit buffered_stream(Arg& a, std::size_t read_buffer_size,
std::size_t write_buffer_size)
: inner_stream_impl_(a, write_buffer_size),
stream_impl_(inner_stream_impl_, read_buffer_size)
{
}
/// Get a reference to the next layer.
next_layer_type& next_layer()
{
return stream_impl_.next_layer().next_layer();
}
/// Get a reference to the lowest layer.
lowest_layer_type& lowest_layer()
{
return stream_impl_.lowest_layer();
}
/// Get a const reference to the lowest layer.
const lowest_layer_type& lowest_layer() const
{
return stream_impl_.lowest_layer();
}
/// Get the executor associated with the object.
executor_type get_executor() ASIO_NOEXCEPT
{
return stream_impl_.lowest_layer().get_executor();
}
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use get_executor().) Get the io_context associated with the
/// object.
asio::io_context& get_io_context()
{
return stream_impl_.get_io_context();
}
/// (Deprecated: Use get_executor().) Get the io_context associated with the
/// object.
asio::io_context& get_io_service()
{
return stream_impl_.get_io_service();
}
#endif // !defined(ASIO_NO_DEPRECATED)
/// Close the stream.
void close()
{
stream_impl_.close();
}
/// Close the stream.
ASIO_SYNC_OP_VOID close(asio::error_code& ec)
{
stream_impl_.close(ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Flush all data from the buffer to the next layer. Returns the number of
/// bytes written to the next layer on the last write operation. Throws an
/// exception on failure.
std::size_t flush()
{
return stream_impl_.next_layer().flush();
}
/// Flush all data from the buffer to the next layer. Returns the number of
/// bytes written to the next layer on the last write operation, or 0 if an
/// error occurred.
std::size_t flush(asio::error_code& ec)
{
return stream_impl_.next_layer().flush(ec);
}
/// Start an asynchronous flush.
template <typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_flush(ASIO_MOVE_ARG(WriteHandler) handler)
{
return stream_impl_.next_layer().async_flush(
ASIO_MOVE_CAST(WriteHandler)(handler));
}
/// Write the given data to the stream. Returns the number of bytes written.
/// Throws an exception on failure.
template <typename ConstBufferSequence>
std::size_t write_some(const ConstBufferSequence& buffers)
{
return stream_impl_.write_some(buffers);
}
/// Write the given data to the stream. Returns the number of bytes written,
/// or 0 if an error occurred.
template <typename ConstBufferSequence>
std::size_t write_some(const ConstBufferSequence& buffers,
asio::error_code& ec)
{
return stream_impl_.write_some(buffers, ec);
}
/// Start an asynchronous write. The data being written must be valid for the
/// lifetime of the asynchronous operation.
template <typename ConstBufferSequence, typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_write_some(const ConstBufferSequence& buffers,
ASIO_MOVE_ARG(WriteHandler) handler)
{
return stream_impl_.async_write_some(buffers,
ASIO_MOVE_CAST(WriteHandler)(handler));
}
/// Fill the buffer with some data. Returns the number of bytes placed in the
/// buffer as a result of the operation. Throws an exception on failure.
std::size_t fill()
{
return stream_impl_.fill();
}
/// Fill the buffer with some data. Returns the number of bytes placed in the
/// buffer as a result of the operation, or 0 if an error occurred.
std::size_t fill(asio::error_code& ec)
{
return stream_impl_.fill(ec);
}
/// Start an asynchronous fill.
template <typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_fill(ASIO_MOVE_ARG(ReadHandler) handler)
{
return stream_impl_.async_fill(ASIO_MOVE_CAST(ReadHandler)(handler));
}
/// Read some data from the stream. Returns the number of bytes read. Throws
/// an exception on failure.
template <typename MutableBufferSequence>
std::size_t read_some(const MutableBufferSequence& buffers)
{
return stream_impl_.read_some(buffers);
}
/// Read some data from the stream. Returns the number of bytes read or 0 if
/// an error occurred.
template <typename MutableBufferSequence>
std::size_t read_some(const MutableBufferSequence& buffers,
asio::error_code& ec)
{
return stream_impl_.read_some(buffers, ec);
}
/// Start an asynchronous read. The buffer into which the data will be read
/// must be valid for the lifetime of the asynchronous operation.
template <typename MutableBufferSequence, typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_read_some(const MutableBufferSequence& buffers,
ASIO_MOVE_ARG(ReadHandler) handler)
{
return stream_impl_.async_read_some(buffers,
ASIO_MOVE_CAST(ReadHandler)(handler));
}
/// Peek at the incoming data on the stream. Returns the number of bytes read.
/// Throws an exception on failure.
template <typename MutableBufferSequence>
std::size_t peek(const MutableBufferSequence& buffers)
{
return stream_impl_.peek(buffers);
}
/// Peek at the incoming data on the stream. Returns the number of bytes read,
/// or 0 if an error occurred.
template <typename MutableBufferSequence>
std::size_t peek(const MutableBufferSequence& buffers,
asio::error_code& ec)
{
return stream_impl_.peek(buffers, ec);
}
/// Determine the amount of data that may be read without blocking.
std::size_t in_avail()
{
return stream_impl_.in_avail();
}
/// Determine the amount of data that may be read without blocking.
std::size_t in_avail(asio::error_code& ec)
{
return stream_impl_.in_avail(ec);
}
private:
// The buffered write stream.
typedef buffered_write_stream<Stream> write_stream_type;
write_stream_type inner_stream_impl_;
// The buffered read stream.
typedef buffered_read_stream<write_stream_type&> read_stream_type;
read_stream_type stream_impl_;
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_BUFFERED_STREAM_HPP

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//
// buffered_stream_fwd.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BUFFERED_STREAM_FWD_HPP
#define ASIO_BUFFERED_STREAM_FWD_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
namespace asio {
template <typename Stream>
class buffered_stream;
} // namespace asio
#endif // ASIO_BUFFERED_STREAM_FWD_HPP

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//
// buffered_write_stream.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BUFFERED_WRITE_STREAM_HPP
#define ASIO_BUFFERED_WRITE_STREAM_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <cstddef>
#include "asio/buffered_write_stream_fwd.hpp"
#include "asio/buffer.hpp"
#include "asio/completion_condition.hpp"
#include "asio/detail/bind_handler.hpp"
#include "asio/detail/buffered_stream_storage.hpp"
#include "asio/detail/noncopyable.hpp"
#include "asio/detail/type_traits.hpp"
#include "asio/error.hpp"
#include "asio/io_context.hpp"
#include "asio/write.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
/// Adds buffering to the write-related operations of a stream.
/**
* The buffered_write_stream class template can be used to add buffering to the
* synchronous and asynchronous write operations of a stream.
*
* @par Thread Safety
* @e Distinct @e objects: Safe.@n
* @e Shared @e objects: Unsafe.
*
* @par Concepts:
* AsyncReadStream, AsyncWriteStream, Stream, SyncReadStream, SyncWriteStream.
*/
template <typename Stream>
class buffered_write_stream
: private noncopyable
{
public:
/// The type of the next layer.
typedef typename remove_reference<Stream>::type next_layer_type;
/// The type of the lowest layer.
typedef typename next_layer_type::lowest_layer_type lowest_layer_type;
/// The type of the executor associated with the object.
typedef typename lowest_layer_type::executor_type executor_type;
#if defined(GENERATING_DOCUMENTATION)
/// The default buffer size.
static const std::size_t default_buffer_size = implementation_defined;
#else
ASIO_STATIC_CONSTANT(std::size_t, default_buffer_size = 1024);
#endif
/// Construct, passing the specified argument to initialise the next layer.
template <typename Arg>
explicit buffered_write_stream(Arg& a)
: next_layer_(a),
storage_(default_buffer_size)
{
}
/// Construct, passing the specified argument to initialise the next layer.
template <typename Arg>
buffered_write_stream(Arg& a, std::size_t buffer_size)
: next_layer_(a),
storage_(buffer_size)
{
}
/// Get a reference to the next layer.
next_layer_type& next_layer()
{
return next_layer_;
}
/// Get a reference to the lowest layer.
lowest_layer_type& lowest_layer()
{
return next_layer_.lowest_layer();
}
/// Get a const reference to the lowest layer.
const lowest_layer_type& lowest_layer() const
{
return next_layer_.lowest_layer();
}
/// Get the executor associated with the object.
executor_type get_executor() ASIO_NOEXCEPT
{
return next_layer_.lowest_layer().get_executor();
}
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use get_executor().) Get the io_context associated with the
/// object.
asio::io_context& get_io_context()
{
return next_layer_.get_io_context();
}
/// (Deprecated: Use get_executor().) Get the io_context associated with the
/// object.
asio::io_context& get_io_service()
{
return next_layer_.get_io_service();
}
#endif // !defined(ASIO_NO_DEPRECATED)
/// Close the stream.
void close()
{
next_layer_.close();
}
/// Close the stream.
ASIO_SYNC_OP_VOID close(asio::error_code& ec)
{
next_layer_.close(ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Flush all data from the buffer to the next layer. Returns the number of
/// bytes written to the next layer on the last write operation. Throws an
/// exception on failure.
std::size_t flush();
/// Flush all data from the buffer to the next layer. Returns the number of
/// bytes written to the next layer on the last write operation, or 0 if an
/// error occurred.
std::size_t flush(asio::error_code& ec);
/// Start an asynchronous flush.
template <typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_flush(ASIO_MOVE_ARG(WriteHandler) handler);
/// Write the given data to the stream. Returns the number of bytes written.
/// Throws an exception on failure.
template <typename ConstBufferSequence>
std::size_t write_some(const ConstBufferSequence& buffers);
/// Write the given data to the stream. Returns the number of bytes written,
/// or 0 if an error occurred and the error handler did not throw.
template <typename ConstBufferSequence>
std::size_t write_some(const ConstBufferSequence& buffers,
asio::error_code& ec);
/// Start an asynchronous write. The data being written must be valid for the
/// lifetime of the asynchronous operation.
template <typename ConstBufferSequence, typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_write_some(const ConstBufferSequence& buffers,
ASIO_MOVE_ARG(WriteHandler) handler);
/// Read some data from the stream. Returns the number of bytes read. Throws
/// an exception on failure.
template <typename MutableBufferSequence>
std::size_t read_some(const MutableBufferSequence& buffers)
{
return next_layer_.read_some(buffers);
}
/// Read some data from the stream. Returns the number of bytes read or 0 if
/// an error occurred.
template <typename MutableBufferSequence>
std::size_t read_some(const MutableBufferSequence& buffers,
asio::error_code& ec)
{
return next_layer_.read_some(buffers, ec);
}
/// Start an asynchronous read. The buffer into which the data will be read
/// must be valid for the lifetime of the asynchronous operation.
template <typename MutableBufferSequence, typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_read_some(const MutableBufferSequence& buffers,
ASIO_MOVE_ARG(ReadHandler) handler)
{
return next_layer_.async_read_some(buffers,
ASIO_MOVE_CAST(ReadHandler)(handler));
}
/// Peek at the incoming data on the stream. Returns the number of bytes read.
/// Throws an exception on failure.
template <typename MutableBufferSequence>
std::size_t peek(const MutableBufferSequence& buffers)
{
return next_layer_.peek(buffers);
}
/// Peek at the incoming data on the stream. Returns the number of bytes read,
/// or 0 if an error occurred.
template <typename MutableBufferSequence>
std::size_t peek(const MutableBufferSequence& buffers,
asio::error_code& ec)
{
return next_layer_.peek(buffers, ec);
}
/// Determine the amount of data that may be read without blocking.
std::size_t in_avail()
{
return next_layer_.in_avail();
}
/// Determine the amount of data that may be read without blocking.
std::size_t in_avail(asio::error_code& ec)
{
return next_layer_.in_avail(ec);
}
private:
/// Copy data into the internal buffer from the specified source buffer.
/// Returns the number of bytes copied.
template <typename ConstBufferSequence>
std::size_t copy(const ConstBufferSequence& buffers);
/// The next layer.
Stream next_layer_;
// The data in the buffer.
detail::buffered_stream_storage storage_;
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#include "asio/impl/buffered_write_stream.hpp"
#endif // ASIO_BUFFERED_WRITE_STREAM_HPP

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//
// buffered_write_stream_fwd.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BUFFERED_WRITE_STREAM_FWD_HPP
#define ASIO_BUFFERED_WRITE_STREAM_FWD_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
namespace asio {
template <typename Stream>
class buffered_write_stream;
} // namespace asio
#endif // ASIO_BUFFERED_WRITE_STREAM_FWD_HPP

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//
// buffers_iterator.hpp
// ~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BUFFERS_ITERATOR_HPP
#define ASIO_BUFFERS_ITERATOR_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <cstddef>
#include <iterator>
#include "asio/buffer.hpp"
#include "asio/detail/assert.hpp"
#include "asio/detail/type_traits.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail
{
template <bool IsMutable>
struct buffers_iterator_types_helper;
template <>
struct buffers_iterator_types_helper<false>
{
typedef const_buffer buffer_type;
template <typename ByteType>
struct byte_type
{
typedef typename add_const<ByteType>::type type;
};
};
template <>
struct buffers_iterator_types_helper<true>
{
typedef mutable_buffer buffer_type;
template <typename ByteType>
struct byte_type
{
typedef ByteType type;
};
};
template <typename BufferSequence, typename ByteType>
struct buffers_iterator_types
{
enum
{
is_mutable = is_convertible<
typename BufferSequence::value_type,
mutable_buffer>::value
};
typedef buffers_iterator_types_helper<is_mutable> helper;
typedef typename helper::buffer_type buffer_type;
typedef typename helper::template byte_type<ByteType>::type byte_type;
typedef typename BufferSequence::const_iterator const_iterator;
};
template <typename ByteType>
struct buffers_iterator_types<mutable_buffer, ByteType>
{
typedef mutable_buffer buffer_type;
typedef ByteType byte_type;
typedef const mutable_buffer* const_iterator;
};
template <typename ByteType>
struct buffers_iterator_types<const_buffer, ByteType>
{
typedef const_buffer buffer_type;
typedef typename add_const<ByteType>::type byte_type;
typedef const const_buffer* const_iterator;
};
#if !defined(ASIO_NO_DEPRECATED)
template <typename ByteType>
struct buffers_iterator_types<mutable_buffers_1, ByteType>
{
typedef mutable_buffer buffer_type;
typedef ByteType byte_type;
typedef const mutable_buffer* const_iterator;
};
template <typename ByteType>
struct buffers_iterator_types<const_buffers_1, ByteType>
{
typedef const_buffer buffer_type;
typedef typename add_const<ByteType>::type byte_type;
typedef const const_buffer* const_iterator;
};
#endif // !defined(ASIO_NO_DEPRECATED)
}
/// A random access iterator over the bytes in a buffer sequence.
template <typename BufferSequence, typename ByteType = char>
class buffers_iterator
{
private:
typedef typename detail::buffers_iterator_types<
BufferSequence, ByteType>::buffer_type buffer_type;
typedef typename detail::buffers_iterator_types<BufferSequence,
ByteType>::const_iterator buffer_sequence_iterator_type;
public:
/// The type used for the distance between two iterators.
typedef std::ptrdiff_t difference_type;
/// The type of the value pointed to by the iterator.
typedef ByteType value_type;
#if defined(GENERATING_DOCUMENTATION)
/// The type of the result of applying operator->() to the iterator.
/**
* If the buffer sequence stores buffer objects that are convertible to
* mutable_buffer, this is a pointer to a non-const ByteType. Otherwise, a
* pointer to a const ByteType.
*/
typedef const_or_non_const_ByteType* pointer;
#else // defined(GENERATING_DOCUMENTATION)
typedef typename detail::buffers_iterator_types<
BufferSequence, ByteType>::byte_type* pointer;
#endif // defined(GENERATING_DOCUMENTATION)
#if defined(GENERATING_DOCUMENTATION)
/// The type of the result of applying operator*() to the iterator.
/**
* If the buffer sequence stores buffer objects that are convertible to
* mutable_buffer, this is a reference to a non-const ByteType. Otherwise, a
* reference to a const ByteType.
*/
typedef const_or_non_const_ByteType& reference;
#else // defined(GENERATING_DOCUMENTATION)
typedef typename detail::buffers_iterator_types<
BufferSequence, ByteType>::byte_type& reference;
#endif // defined(GENERATING_DOCUMENTATION)
/// The iterator category.
typedef std::random_access_iterator_tag iterator_category;
/// Default constructor. Creates an iterator in an undefined state.
buffers_iterator()
: current_buffer_(),
current_buffer_position_(0),
begin_(),
current_(),
end_(),
position_(0)
{
}
/// Construct an iterator representing the beginning of the buffers' data.
static buffers_iterator begin(const BufferSequence& buffers)
#if defined(__GNUC__) && (__GNUC__ == 4) && (__GNUC_MINOR__ == 3)
__attribute__ ((__noinline__))
#endif // defined(__GNUC__) && (__GNUC__ == 4) && (__GNUC_MINOR__ == 3)
{
buffers_iterator new_iter;
new_iter.begin_ = asio::buffer_sequence_begin(buffers);
new_iter.current_ = asio::buffer_sequence_begin(buffers);
new_iter.end_ = asio::buffer_sequence_end(buffers);
while (new_iter.current_ != new_iter.end_)
{
new_iter.current_buffer_ = *new_iter.current_;
if (new_iter.current_buffer_.size() > 0)
break;
++new_iter.current_;
}
return new_iter;
}
/// Construct an iterator representing the end of the buffers' data.
static buffers_iterator end(const BufferSequence& buffers)
#if defined(__GNUC__) && (__GNUC__ == 4) && (__GNUC_MINOR__ == 3)
__attribute__ ((__noinline__))
#endif // defined(__GNUC__) && (__GNUC__ == 4) && (__GNUC_MINOR__ == 3)
{
buffers_iterator new_iter;
new_iter.begin_ = asio::buffer_sequence_begin(buffers);
new_iter.current_ = asio::buffer_sequence_begin(buffers);
new_iter.end_ = asio::buffer_sequence_end(buffers);
while (new_iter.current_ != new_iter.end_)
{
buffer_type buffer = *new_iter.current_;
new_iter.position_ += buffer.size();
++new_iter.current_;
}
return new_iter;
}
/// Dereference an iterator.
reference operator*() const
{
return dereference();
}
/// Dereference an iterator.
pointer operator->() const
{
return &dereference();
}
/// Access an individual element.
reference operator[](std::ptrdiff_t difference) const
{
buffers_iterator tmp(*this);
tmp.advance(difference);
return *tmp;
}
/// Increment operator (prefix).
buffers_iterator& operator++()
{
increment();
return *this;
}
/// Increment operator (postfix).
buffers_iterator operator++(int)
{
buffers_iterator tmp(*this);
++*this;
return tmp;
}
/// Decrement operator (prefix).
buffers_iterator& operator--()
{
decrement();
return *this;
}
/// Decrement operator (postfix).
buffers_iterator operator--(int)
{
buffers_iterator tmp(*this);
--*this;
return tmp;
}
/// Addition operator.
buffers_iterator& operator+=(std::ptrdiff_t difference)
{
advance(difference);
return *this;
}
/// Subtraction operator.
buffers_iterator& operator-=(std::ptrdiff_t difference)
{
advance(-difference);
return *this;
}
/// Addition operator.
friend buffers_iterator operator+(const buffers_iterator& iter,
std::ptrdiff_t difference)
{
buffers_iterator tmp(iter);
tmp.advance(difference);
return tmp;
}
/// Addition operator.
friend buffers_iterator operator+(std::ptrdiff_t difference,
const buffers_iterator& iter)
{
buffers_iterator tmp(iter);
tmp.advance(difference);
return tmp;
}
/// Subtraction operator.
friend buffers_iterator operator-(const buffers_iterator& iter,
std::ptrdiff_t difference)
{
buffers_iterator tmp(iter);
tmp.advance(-difference);
return tmp;
}
/// Subtraction operator.
friend std::ptrdiff_t operator-(const buffers_iterator& a,
const buffers_iterator& b)
{
return b.distance_to(a);
}
/// Test two iterators for equality.
friend bool operator==(const buffers_iterator& a, const buffers_iterator& b)
{
return a.equal(b);
}
/// Test two iterators for inequality.
friend bool operator!=(const buffers_iterator& a, const buffers_iterator& b)
{
return !a.equal(b);
}
/// Compare two iterators.
friend bool operator<(const buffers_iterator& a, const buffers_iterator& b)
{
return a.distance_to(b) > 0;
}
/// Compare two iterators.
friend bool operator<=(const buffers_iterator& a, const buffers_iterator& b)
{
return !(b < a);
}
/// Compare two iterators.
friend bool operator>(const buffers_iterator& a, const buffers_iterator& b)
{
return b < a;
}
/// Compare two iterators.
friend bool operator>=(const buffers_iterator& a, const buffers_iterator& b)
{
return !(a < b);
}
private:
// Dereference the iterator.
reference dereference() const
{
return static_cast<pointer>(
current_buffer_.data())[current_buffer_position_];
}
// Compare two iterators for equality.
bool equal(const buffers_iterator& other) const
{
return position_ == other.position_;
}
// Increment the iterator.
void increment()
{
ASIO_ASSERT(current_ != end_ && "iterator out of bounds");
++position_;
// Check if the increment can be satisfied by the current buffer.
++current_buffer_position_;
if (current_buffer_position_ != current_buffer_.size())
return;
// Find the next non-empty buffer.
++current_;
current_buffer_position_ = 0;
while (current_ != end_)
{
current_buffer_ = *current_;
if (current_buffer_.size() > 0)
return;
++current_;
}
}
// Decrement the iterator.
void decrement()
{
ASIO_ASSERT(position_ > 0 && "iterator out of bounds");
--position_;
// Check if the decrement can be satisfied by the current buffer.
if (current_buffer_position_ != 0)
{
--current_buffer_position_;
return;
}
// Find the previous non-empty buffer.
buffer_sequence_iterator_type iter = current_;
while (iter != begin_)
{
--iter;
buffer_type buffer = *iter;
std::size_t buffer_size = buffer.size();
if (buffer_size > 0)
{
current_ = iter;
current_buffer_ = buffer;
current_buffer_position_ = buffer_size - 1;
return;
}
}
}
// Advance the iterator by the specified distance.
void advance(std::ptrdiff_t n)
{
if (n > 0)
{
ASIO_ASSERT(current_ != end_ && "iterator out of bounds");
for (;;)
{
std::ptrdiff_t current_buffer_balance
= current_buffer_.size() - current_buffer_position_;
// Check if the advance can be satisfied by the current buffer.
if (current_buffer_balance > n)
{
position_ += n;
current_buffer_position_ += n;
return;
}
// Update position.
n -= current_buffer_balance;
position_ += current_buffer_balance;
// Move to next buffer. If it is empty then it will be skipped on the
// next iteration of this loop.
if (++current_ == end_)
{
ASIO_ASSERT(n == 0 && "iterator out of bounds");
current_buffer_ = buffer_type();
current_buffer_position_ = 0;
return;
}
current_buffer_ = *current_;
current_buffer_position_ = 0;
}
}
else if (n < 0)
{
std::size_t abs_n = -n;
ASIO_ASSERT(position_ >= abs_n && "iterator out of bounds");
for (;;)
{
// Check if the advance can be satisfied by the current buffer.
if (current_buffer_position_ >= abs_n)
{
position_ -= abs_n;
current_buffer_position_ -= abs_n;
return;
}
// Update position.
abs_n -= current_buffer_position_;
position_ -= current_buffer_position_;
// Check if we've reached the beginning of the buffers.
if (current_ == begin_)
{
ASIO_ASSERT(abs_n == 0 && "iterator out of bounds");
current_buffer_position_ = 0;
return;
}
// Find the previous non-empty buffer.
buffer_sequence_iterator_type iter = current_;
while (iter != begin_)
{
--iter;
buffer_type buffer = *iter;
std::size_t buffer_size = buffer.size();
if (buffer_size > 0)
{
current_ = iter;
current_buffer_ = buffer;
current_buffer_position_ = buffer_size;
break;
}
}
}
}
}
// Determine the distance between two iterators.
std::ptrdiff_t distance_to(const buffers_iterator& other) const
{
return other.position_ - position_;
}
buffer_type current_buffer_;
std::size_t current_buffer_position_;
buffer_sequence_iterator_type begin_;
buffer_sequence_iterator_type current_;
buffer_sequence_iterator_type end_;
std::size_t position_;
};
/// Construct an iterator representing the beginning of the buffers' data.
template <typename BufferSequence>
inline buffers_iterator<BufferSequence> buffers_begin(
const BufferSequence& buffers)
{
return buffers_iterator<BufferSequence>::begin(buffers);
}
/// Construct an iterator representing the end of the buffers' data.
template <typename BufferSequence>
inline buffers_iterator<BufferSequence> buffers_end(
const BufferSequence& buffers)
{
return buffers_iterator<BufferSequence>::end(buffers);
}
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_BUFFERS_ITERATOR_HPP

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//
// completion_condition.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_COMPLETION_CONDITION_HPP
#define ASIO_COMPLETION_CONDITION_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <cstddef>
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
// The default maximum number of bytes to transfer in a single operation.
enum default_max_transfer_size_t { default_max_transfer_size = 65536 };
// Adapt result of old-style completion conditions (which had a bool result
// where true indicated that the operation was complete).
inline std::size_t adapt_completion_condition_result(bool result)
{
return result ? 0 : default_max_transfer_size;
}
// Adapt result of current completion conditions (which have a size_t result
// where 0 means the operation is complete, and otherwise the result is the
// maximum number of bytes to transfer on the next underlying operation).
inline std::size_t adapt_completion_condition_result(std::size_t result)
{
return result;
}
class transfer_all_t
{
public:
typedef std::size_t result_type;
template <typename Error>
std::size_t operator()(const Error& err, std::size_t)
{
return !!err ? 0 : default_max_transfer_size;
}
};
class transfer_at_least_t
{
public:
typedef std::size_t result_type;
explicit transfer_at_least_t(std::size_t minimum)
: minimum_(minimum)
{
}
template <typename Error>
std::size_t operator()(const Error& err, std::size_t bytes_transferred)
{
return (!!err || bytes_transferred >= minimum_)
? 0 : default_max_transfer_size;
}
private:
std::size_t minimum_;
};
class transfer_exactly_t
{
public:
typedef std::size_t result_type;
explicit transfer_exactly_t(std::size_t size)
: size_(size)
{
}
template <typename Error>
std::size_t operator()(const Error& err, std::size_t bytes_transferred)
{
return (!!err || bytes_transferred >= size_) ? 0 :
(size_ - bytes_transferred < default_max_transfer_size
? size_ - bytes_transferred : std::size_t(default_max_transfer_size));
}
private:
std::size_t size_;
};
} // namespace detail
/**
* @defgroup completion_condition Completion Condition Function Objects
*
* Function objects used for determining when a read or write operation should
* complete.
*/
/*@{*/
/// Return a completion condition function object that indicates that a read or
/// write operation should continue until all of the data has been transferred,
/// or until an error occurs.
/**
* This function is used to create an object, of unspecified type, that meets
* CompletionCondition requirements.
*
* @par Example
* Reading until a buffer is full:
* @code
* boost::array<char, 128> buf;
* asio::error_code ec;
* std::size_t n = asio::read(
* sock, asio::buffer(buf),
* asio::transfer_all(), ec);
* if (ec)
* {
* // An error occurred.
* }
* else
* {
* // n == 128
* }
* @endcode
*/
#if defined(GENERATING_DOCUMENTATION)
unspecified transfer_all();
#else
inline detail::transfer_all_t transfer_all()
{
return detail::transfer_all_t();
}
#endif
/// Return a completion condition function object that indicates that a read or
/// write operation should continue until a minimum number of bytes has been
/// transferred, or until an error occurs.
/**
* This function is used to create an object, of unspecified type, that meets
* CompletionCondition requirements.
*
* @par Example
* Reading until a buffer is full or contains at least 64 bytes:
* @code
* boost::array<char, 128> buf;
* asio::error_code ec;
* std::size_t n = asio::read(
* sock, asio::buffer(buf),
* asio::transfer_at_least(64), ec);
* if (ec)
* {
* // An error occurred.
* }
* else
* {
* // n >= 64 && n <= 128
* }
* @endcode
*/
#if defined(GENERATING_DOCUMENTATION)
unspecified transfer_at_least(std::size_t minimum);
#else
inline detail::transfer_at_least_t transfer_at_least(std::size_t minimum)
{
return detail::transfer_at_least_t(minimum);
}
#endif
/// Return a completion condition function object that indicates that a read or
/// write operation should continue until an exact number of bytes has been
/// transferred, or until an error occurs.
/**
* This function is used to create an object, of unspecified type, that meets
* CompletionCondition requirements.
*
* @par Example
* Reading until a buffer is full or contains exactly 64 bytes:
* @code
* boost::array<char, 128> buf;
* asio::error_code ec;
* std::size_t n = asio::read(
* sock, asio::buffer(buf),
* asio::transfer_exactly(64), ec);
* if (ec)
* {
* // An error occurred.
* }
* else
* {
* // n == 64
* }
* @endcode
*/
#if defined(GENERATING_DOCUMENTATION)
unspecified transfer_exactly(std::size_t size);
#else
inline detail::transfer_exactly_t transfer_exactly(std::size_t size)
{
return detail::transfer_exactly_t(size);
}
#endif
/*@}*/
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_COMPLETION_CONDITION_HPP

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//
// coroutine.hpp
// ~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_COROUTINE_HPP
#define ASIO_COROUTINE_HPP
namespace asio {
namespace detail {
class coroutine_ref;
} // namespace detail
/// Provides support for implementing stackless coroutines.
/**
* The @c coroutine class may be used to implement stackless coroutines. The
* class itself is used to store the current state of the coroutine.
*
* Coroutines are copy-constructible and assignable, and the space overhead is
* a single int. They can be used as a base class:
*
* @code class session : coroutine
* {
* ...
* }; @endcode
*
* or as a data member:
*
* @code class session
* {
* ...
* coroutine coro_;
* }; @endcode
*
* or even bound in as a function argument using lambdas or @c bind(). The
* important thing is that as the application maintains a copy of the object
* for as long as the coroutine must be kept alive.
*
* @par Pseudo-keywords
*
* A coroutine is used in conjunction with certain "pseudo-keywords", which
* are implemented as macros. These macros are defined by a header file:
*
* @code #include <asio/yield.hpp>@endcode
*
* and may conversely be undefined as follows:
*
* @code #include <asio/unyield.hpp>@endcode
*
* <b>reenter</b>
*
* The @c reenter macro is used to define the body of a coroutine. It takes a
* single argument: a pointer or reference to a coroutine object. For example,
* if the base class is a coroutine object you may write:
*
* @code reenter (this)
* {
* ... coroutine body ...
* } @endcode
*
* and if a data member or other variable you can write:
*
* @code reenter (coro_)
* {
* ... coroutine body ...
* } @endcode
*
* When @c reenter is executed at runtime, control jumps to the location of the
* last @c yield or @c fork.
*
* The coroutine body may also be a single statement, such as:
*
* @code reenter (this) for (;;)
* {
* ...
* } @endcode
*
* @b Limitation: The @c reenter macro is implemented using a switch. This
* means that you must take care when using local variables within the
* coroutine body. The local variable is not allowed in a position where
* reentering the coroutine could bypass the variable definition.
*
* <b>yield <em>statement</em></b>
*
* This form of the @c yield keyword is often used with asynchronous operations:
*
* @code yield socket_->async_read_some(buffer(*buffer_), *this); @endcode
*
* This divides into four logical steps:
*
* @li @c yield saves the current state of the coroutine.
* @li The statement initiates the asynchronous operation.
* @li The resume point is defined immediately following the statement.
* @li Control is transferred to the end of the coroutine body.
*
* When the asynchronous operation completes, the function object is invoked
* and @c reenter causes control to transfer to the resume point. It is
* important to remember to carry the coroutine state forward with the
* asynchronous operation. In the above snippet, the current class is a
* function object object with a coroutine object as base class or data member.
*
* The statement may also be a compound statement, and this permits us to
* define local variables with limited scope:
*
* @code yield
* {
* mutable_buffers_1 b = buffer(*buffer_);
* socket_->async_read_some(b, *this);
* } @endcode
*
* <b>yield return <em>expression</em> ;</b>
*
* This form of @c yield is often used in generators or coroutine-based parsers.
* For example, the function object:
*
* @code struct interleave : coroutine
* {
* istream& is1;
* istream& is2;
* char operator()(char c)
* {
* reenter (this) for (;;)
* {
* yield return is1.get();
* yield return is2.get();
* }
* }
* }; @endcode
*
* defines a trivial coroutine that interleaves the characters from two input
* streams.
*
* This type of @c yield divides into three logical steps:
*
* @li @c yield saves the current state of the coroutine.
* @li The resume point is defined immediately following the semicolon.
* @li The value of the expression is returned from the function.
*
* <b>yield ;</b>
*
* This form of @c yield is equivalent to the following steps:
*
* @li @c yield saves the current state of the coroutine.
* @li The resume point is defined immediately following the semicolon.
* @li Control is transferred to the end of the coroutine body.
*
* This form might be applied when coroutines are used for cooperative
* threading and scheduling is explicitly managed. For example:
*
* @code struct task : coroutine
* {
* ...
* void operator()()
* {
* reenter (this)
* {
* while (... not finished ...)
* {
* ... do something ...
* yield;
* ... do some more ...
* yield;
* }
* }
* }
* ...
* };
* ...
* task t1, t2;
* for (;;)
* {
* t1();
* t2();
* } @endcode
*
* <b>yield break ;</b>
*
* The final form of @c yield is used to explicitly terminate the coroutine.
* This form is comprised of two steps:
*
* @li @c yield sets the coroutine state to indicate termination.
* @li Control is transferred to the end of the coroutine body.
*
* Once terminated, calls to is_complete() return true and the coroutine cannot
* be reentered.
*
* Note that a coroutine may also be implicitly terminated if the coroutine
* body is exited without a yield, e.g. by return, throw or by running to the
* end of the body.
*
* <b>fork <em>statement</em></b>
*
* The @c fork pseudo-keyword is used when "forking" a coroutine, i.e. splitting
* it into two (or more) copies. One use of @c fork is in a server, where a new
* coroutine is created to handle each client connection:
*
* @code reenter (this)
* {
* do
* {
* socket_.reset(new tcp::socket(io_context_));
* yield acceptor->async_accept(*socket_, *this);
* fork server(*this)();
* } while (is_parent());
* ... client-specific handling follows ...
* } @endcode
*
* The logical steps involved in a @c fork are:
*
* @li @c fork saves the current state of the coroutine.
* @li The statement creates a copy of the coroutine and either executes it
* immediately or schedules it for later execution.
* @li The resume point is defined immediately following the semicolon.
* @li For the "parent", control immediately continues from the next line.
*
* The functions is_parent() and is_child() can be used to differentiate
* between parent and child. You would use these functions to alter subsequent
* control flow.
*
* Note that @c fork doesn't do the actual forking by itself. It is the
* application's responsibility to create a clone of the coroutine and call it.
* The clone can be called immediately, as above, or scheduled for delayed
* execution using something like io_context::post().
*
* @par Alternate macro names
*
* If preferred, an application can use macro names that follow a more typical
* naming convention, rather than the pseudo-keywords. These are:
*
* @li @c ASIO_CORO_REENTER instead of @c reenter
* @li @c ASIO_CORO_YIELD instead of @c yield
* @li @c ASIO_CORO_FORK instead of @c fork
*/
class coroutine
{
public:
/// Constructs a coroutine in its initial state.
coroutine() : value_(0) {}
/// Returns true if the coroutine is the child of a fork.
bool is_child() const { return value_ < 0; }
/// Returns true if the coroutine is the parent of a fork.
bool is_parent() const { return !is_child(); }
/// Returns true if the coroutine has reached its terminal state.
bool is_complete() const { return value_ == -1; }
private:
friend class detail::coroutine_ref;
int value_;
};
namespace detail {
class coroutine_ref
{
public:
coroutine_ref(coroutine& c) : value_(c.value_), modified_(false) {}
coroutine_ref(coroutine* c) : value_(c->value_), modified_(false) {}
~coroutine_ref() { if (!modified_) value_ = -1; }
operator int() const { return value_; }
int& operator=(int v) { modified_ = true; return value_ = v; }
private:
void operator=(const coroutine_ref&);
int& value_;
bool modified_;
};
} // namespace detail
} // namespace asio
#define ASIO_CORO_REENTER(c) \
switch (::asio::detail::coroutine_ref _coro_value = c) \
case -1: if (_coro_value) \
{ \
goto terminate_coroutine; \
terminate_coroutine: \
_coro_value = -1; \
goto bail_out_of_coroutine; \
bail_out_of_coroutine: \
break; \
} \
else /* fall-through */ case 0:
#define ASIO_CORO_YIELD_IMPL(n) \
for (_coro_value = (n);;) \
if (_coro_value == 0) \
{ \
case (n): ; \
break; \
} \
else \
switch (_coro_value ? 0 : 1) \
for (;;) \
/* fall-through */ case -1: if (_coro_value) \
goto terminate_coroutine; \
else for (;;) \
/* fall-through */ case 1: if (_coro_value) \
goto bail_out_of_coroutine; \
else /* fall-through */ case 0:
#define ASIO_CORO_FORK_IMPL(n) \
for (_coro_value = -(n);; _coro_value = (n)) \
if (_coro_value == (n)) \
{ \
case -(n): ; \
break; \
} \
else
#if defined(_MSC_VER)
# define ASIO_CORO_YIELD ASIO_CORO_YIELD_IMPL(__COUNTER__ + 1)
# define ASIO_CORO_FORK ASIO_CORO_FORK_IMPL(__COUNTER__ + 1)
#else // defined(_MSC_VER)
# define ASIO_CORO_YIELD ASIO_CORO_YIELD_IMPL(__LINE__)
# define ASIO_CORO_FORK ASIO_CORO_FORK_IMPL(__LINE__)
#endif // defined(_MSC_VER)
#endif // ASIO_COROUTINE_HPP

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//
// datagram_socket_service.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DATAGRAM_SOCKET_SERVICE_HPP
#define ASIO_DATAGRAM_SOCKET_SERVICE_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_ENABLE_OLD_SERVICES)
#include <cstddef>
#include "asio/async_result.hpp"
#include "asio/detail/type_traits.hpp"
#include "asio/error.hpp"
#include "asio/io_context.hpp"
#if defined(ASIO_WINDOWS_RUNTIME)
# include "asio/detail/null_socket_service.hpp"
#elif defined(ASIO_HAS_IOCP)
# include "asio/detail/win_iocp_socket_service.hpp"
#else
# include "asio/detail/reactive_socket_service.hpp"
#endif
#include "asio/detail/push_options.hpp"
namespace asio {
/// Default service implementation for a datagram socket.
template <typename Protocol>
class datagram_socket_service
#if defined(GENERATING_DOCUMENTATION)
: public asio::io_context::service
#else
: public asio::detail::service_base<datagram_socket_service<Protocol> >
#endif
{
public:
#if defined(GENERATING_DOCUMENTATION)
/// The unique service identifier.
static asio::io_context::id id;
#endif
/// The protocol type.
typedef Protocol protocol_type;
/// The endpoint type.
typedef typename Protocol::endpoint endpoint_type;
private:
// The type of the platform-specific implementation.
#if defined(ASIO_WINDOWS_RUNTIME)
typedef detail::null_socket_service<Protocol> service_impl_type;
#elif defined(ASIO_HAS_IOCP)
typedef detail::win_iocp_socket_service<Protocol> service_impl_type;
#else
typedef detail::reactive_socket_service<Protocol> service_impl_type;
#endif
public:
/// The type of a datagram socket.
#if defined(GENERATING_DOCUMENTATION)
typedef implementation_defined implementation_type;
#else
typedef typename service_impl_type::implementation_type implementation_type;
#endif
/// The native socket type.
#if defined(GENERATING_DOCUMENTATION)
typedef implementation_defined native_handle_type;
#else
typedef typename service_impl_type::native_handle_type native_handle_type;
#endif
/// Construct a new datagram socket service for the specified io_context.
explicit datagram_socket_service(asio::io_context& io_context)
: asio::detail::service_base<
datagram_socket_service<Protocol> >(io_context),
service_impl_(io_context)
{
}
/// Construct a new datagram socket implementation.
void construct(implementation_type& impl)
{
service_impl_.construct(impl);
}
#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Move-construct a new datagram socket implementation.
void move_construct(implementation_type& impl,
implementation_type& other_impl)
{
service_impl_.move_construct(impl, other_impl);
}
/// Move-assign from another datagram socket implementation.
void move_assign(implementation_type& impl,
datagram_socket_service& other_service,
implementation_type& other_impl)
{
service_impl_.move_assign(impl, other_service.service_impl_, other_impl);
}
// All socket services have access to each other's implementations.
template <typename Protocol1> friend class datagram_socket_service;
/// Move-construct a new datagram socket implementation from another protocol
/// type.
template <typename Protocol1>
void converting_move_construct(implementation_type& impl,
datagram_socket_service<Protocol1>& other_service,
typename datagram_socket_service<
Protocol1>::implementation_type& other_impl,
typename enable_if<is_convertible<
Protocol1, Protocol>::value>::type* = 0)
{
service_impl_.template converting_move_construct<Protocol1>(
impl, other_service.service_impl_, other_impl);
}
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Destroy a datagram socket implementation.
void destroy(implementation_type& impl)
{
service_impl_.destroy(impl);
}
// Open a new datagram socket implementation.
ASIO_SYNC_OP_VOID open(implementation_type& impl,
const protocol_type& protocol, asio::error_code& ec)
{
if (protocol.type() == ASIO_OS_DEF(SOCK_DGRAM))
service_impl_.open(impl, protocol, ec);
else
ec = asio::error::invalid_argument;
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Assign an existing native socket to a datagram socket.
ASIO_SYNC_OP_VOID assign(implementation_type& impl,
const protocol_type& protocol, const native_handle_type& native_socket,
asio::error_code& ec)
{
service_impl_.assign(impl, protocol, native_socket, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Determine whether the socket is open.
bool is_open(const implementation_type& impl) const
{
return service_impl_.is_open(impl);
}
/// Close a datagram socket implementation.
ASIO_SYNC_OP_VOID close(implementation_type& impl,
asio::error_code& ec)
{
service_impl_.close(impl, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Release ownership of the underlying socket.
native_handle_type release(implementation_type& impl,
asio::error_code& ec)
{
return service_impl_.release(impl, ec);
}
/// Get the native socket implementation.
native_handle_type native_handle(implementation_type& impl)
{
return service_impl_.native_handle(impl);
}
/// Cancel all asynchronous operations associated with the socket.
ASIO_SYNC_OP_VOID cancel(implementation_type& impl,
asio::error_code& ec)
{
service_impl_.cancel(impl, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Determine whether the socket is at the out-of-band data mark.
bool at_mark(const implementation_type& impl,
asio::error_code& ec) const
{
return service_impl_.at_mark(impl, ec);
}
/// Determine the number of bytes available for reading.
std::size_t available(const implementation_type& impl,
asio::error_code& ec) const
{
return service_impl_.available(impl, ec);
}
// Bind the datagram socket to the specified local endpoint.
ASIO_SYNC_OP_VOID bind(implementation_type& impl,
const endpoint_type& endpoint, asio::error_code& ec)
{
service_impl_.bind(impl, endpoint, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Connect the datagram socket to the specified endpoint.
ASIO_SYNC_OP_VOID connect(implementation_type& impl,
const endpoint_type& peer_endpoint, asio::error_code& ec)
{
service_impl_.connect(impl, peer_endpoint, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Start an asynchronous connect.
template <typename ConnectHandler>
ASIO_INITFN_RESULT_TYPE(ConnectHandler,
void (asio::error_code))
async_connect(implementation_type& impl,
const endpoint_type& peer_endpoint,
ASIO_MOVE_ARG(ConnectHandler) handler)
{
async_completion<ConnectHandler,
void (asio::error_code)> init(handler);
service_impl_.async_connect(impl, peer_endpoint, init.completion_handler);
return init.result.get();
}
/// Set a socket option.
template <typename SettableSocketOption>
ASIO_SYNC_OP_VOID set_option(implementation_type& impl,
const SettableSocketOption& option, asio::error_code& ec)
{
service_impl_.set_option(impl, option, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Get a socket option.
template <typename GettableSocketOption>
ASIO_SYNC_OP_VOID get_option(const implementation_type& impl,
GettableSocketOption& option, asio::error_code& ec) const
{
service_impl_.get_option(impl, option, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Perform an IO control command on the socket.
template <typename IoControlCommand>
ASIO_SYNC_OP_VOID io_control(implementation_type& impl,
IoControlCommand& command, asio::error_code& ec)
{
service_impl_.io_control(impl, command, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Gets the non-blocking mode of the socket.
bool non_blocking(const implementation_type& impl) const
{
return service_impl_.non_blocking(impl);
}
/// Sets the non-blocking mode of the socket.
ASIO_SYNC_OP_VOID non_blocking(implementation_type& impl,
bool mode, asio::error_code& ec)
{
service_impl_.non_blocking(impl, mode, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Gets the non-blocking mode of the native socket implementation.
bool native_non_blocking(const implementation_type& impl) const
{
return service_impl_.native_non_blocking(impl);
}
/// Sets the non-blocking mode of the native socket implementation.
ASIO_SYNC_OP_VOID native_non_blocking(implementation_type& impl,
bool mode, asio::error_code& ec)
{
service_impl_.native_non_blocking(impl, mode, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Get the local endpoint.
endpoint_type local_endpoint(const implementation_type& impl,
asio::error_code& ec) const
{
return service_impl_.local_endpoint(impl, ec);
}
/// Get the remote endpoint.
endpoint_type remote_endpoint(const implementation_type& impl,
asio::error_code& ec) const
{
return service_impl_.remote_endpoint(impl, ec);
}
/// Disable sends or receives on the socket.
ASIO_SYNC_OP_VOID shutdown(implementation_type& impl,
socket_base::shutdown_type what, asio::error_code& ec)
{
service_impl_.shutdown(impl, what, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Wait for the socket to become ready to read, ready to write, or to have
/// pending error conditions.
ASIO_SYNC_OP_VOID wait(implementation_type& impl,
socket_base::wait_type w, asio::error_code& ec)
{
service_impl_.wait(impl, w, ec);
ASIO_SYNC_OP_VOID_RETURN(ec);
}
/// Asynchronously wait for the socket to become ready to read, ready to
/// write, or to have pending error conditions.
template <typename WaitHandler>
ASIO_INITFN_RESULT_TYPE(WaitHandler,
void (asio::error_code))
async_wait(implementation_type& impl, socket_base::wait_type w,
ASIO_MOVE_ARG(WaitHandler) handler)
{
async_completion<WaitHandler,
void (asio::error_code)> init(handler);
service_impl_.async_wait(impl, w, init.completion_handler);
return init.result.get();
}
/// Send the given data to the peer.
template <typename ConstBufferSequence>
std::size_t send(implementation_type& impl,
const ConstBufferSequence& buffers,
socket_base::message_flags flags, asio::error_code& ec)
{
return service_impl_.send(impl, buffers, flags, ec);
}
/// Start an asynchronous send.
template <typename ConstBufferSequence, typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_send(implementation_type& impl, const ConstBufferSequence& buffers,
socket_base::message_flags flags,
ASIO_MOVE_ARG(WriteHandler) handler)
{
async_completion<WriteHandler,
void (asio::error_code, std::size_t)> init(handler);
service_impl_.async_send(impl, buffers, flags, init.completion_handler);
return init.result.get();
}
/// Send a datagram to the specified endpoint.
template <typename ConstBufferSequence>
std::size_t send_to(implementation_type& impl,
const ConstBufferSequence& buffers, const endpoint_type& destination,
socket_base::message_flags flags, asio::error_code& ec)
{
return service_impl_.send_to(impl, buffers, destination, flags, ec);
}
/// Start an asynchronous send.
template <typename ConstBufferSequence, typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_send_to(implementation_type& impl,
const ConstBufferSequence& buffers, const endpoint_type& destination,
socket_base::message_flags flags,
ASIO_MOVE_ARG(WriteHandler) handler)
{
async_completion<WriteHandler,
void (asio::error_code, std::size_t)> init(handler);
service_impl_.async_send_to(impl, buffers,
destination, flags, init.completion_handler);
return init.result.get();
}
/// Receive some data from the peer.
template <typename MutableBufferSequence>
std::size_t receive(implementation_type& impl,
const MutableBufferSequence& buffers,
socket_base::message_flags flags, asio::error_code& ec)
{
return service_impl_.receive(impl, buffers, flags, ec);
}
/// Start an asynchronous receive.
template <typename MutableBufferSequence, typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_receive(implementation_type& impl,
const MutableBufferSequence& buffers,
socket_base::message_flags flags,
ASIO_MOVE_ARG(ReadHandler) handler)
{
async_completion<ReadHandler,
void (asio::error_code, std::size_t)> init(handler);
service_impl_.async_receive(impl, buffers, flags, init.completion_handler);
return init.result.get();
}
/// Receive a datagram with the endpoint of the sender.
template <typename MutableBufferSequence>
std::size_t receive_from(implementation_type& impl,
const MutableBufferSequence& buffers, endpoint_type& sender_endpoint,
socket_base::message_flags flags, asio::error_code& ec)
{
return service_impl_.receive_from(impl, buffers, sender_endpoint, flags,
ec);
}
/// Start an asynchronous receive that will get the endpoint of the sender.
template <typename MutableBufferSequence, typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_receive_from(implementation_type& impl,
const MutableBufferSequence& buffers, endpoint_type& sender_endpoint,
socket_base::message_flags flags,
ASIO_MOVE_ARG(ReadHandler) handler)
{
async_completion<ReadHandler,
void (asio::error_code, std::size_t)> init(handler);
service_impl_.async_receive_from(impl, buffers,
sender_endpoint, flags, init.completion_handler);
return init.result.get();
}
private:
// Destroy all user-defined handler objects owned by the service.
void shutdown()
{
service_impl_.shutdown();
}
// The platform-specific implementation.
service_impl_type service_impl_;
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
#endif // ASIO_DATAGRAM_SOCKET_SERVICE_HPP

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//
// deadline_timer.hpp
// ~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DEADLINE_TIMER_HPP
#define ASIO_DEADLINE_TIMER_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_HAS_BOOST_DATE_TIME) \
|| defined(GENERATING_DOCUMENTATION)
#include "asio/detail/socket_types.hpp" // Must come before posix_time.
#include "asio/basic_deadline_timer.hpp"
#include <boost/date_time/posix_time/posix_time_types.hpp>
namespace asio {
/// Typedef for the typical usage of timer. Uses a UTC clock.
typedef basic_deadline_timer<boost::posix_time::ptime> deadline_timer;
} // namespace asio
#endif // defined(ASIO_HAS_BOOST_DATE_TIME)
// || defined(GENERATING_DOCUMENTATION)
#endif // ASIO_DEADLINE_TIMER_HPP

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//
// deadline_timer_service.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DEADLINE_TIMER_SERVICE_HPP
#define ASIO_DEADLINE_TIMER_SERVICE_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_ENABLE_OLD_SERVICES)
#if defined(ASIO_HAS_BOOST_DATE_TIME) \
|| defined(GENERATING_DOCUMENTATION)
#include <cstddef>
#include "asio/async_result.hpp"
#include "asio/detail/deadline_timer_service.hpp"
#include "asio/io_context.hpp"
#include "asio/time_traits.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
/// Default service implementation for a timer.
template <typename TimeType,
typename TimeTraits = asio::time_traits<TimeType> >
class deadline_timer_service
#if defined(GENERATING_DOCUMENTATION)
: public asio::io_context::service
#else
: public asio::detail::service_base<
deadline_timer_service<TimeType, TimeTraits> >
#endif
{
public:
#if defined(GENERATING_DOCUMENTATION)
/// The unique service identifier.
static asio::io_context::id id;
#endif
/// The time traits type.
typedef TimeTraits traits_type;
/// The time type.
typedef typename traits_type::time_type time_type;
/// The duration type.
typedef typename traits_type::duration_type duration_type;
private:
// The type of the platform-specific implementation.
typedef detail::deadline_timer_service<traits_type> service_impl_type;
public:
/// The implementation type of the deadline timer.
#if defined(GENERATING_DOCUMENTATION)
typedef implementation_defined implementation_type;
#else
typedef typename service_impl_type::implementation_type implementation_type;
#endif
/// Construct a new timer service for the specified io_context.
explicit deadline_timer_service(asio::io_context& io_context)
: asio::detail::service_base<
deadline_timer_service<TimeType, TimeTraits> >(io_context),
service_impl_(io_context)
{
}
/// Construct a new timer implementation.
void construct(implementation_type& impl)
{
service_impl_.construct(impl);
}
/// Destroy a timer implementation.
void destroy(implementation_type& impl)
{
service_impl_.destroy(impl);
}
/// Cancel any asynchronous wait operations associated with the timer.
std::size_t cancel(implementation_type& impl, asio::error_code& ec)
{
return service_impl_.cancel(impl, ec);
}
/// Cancels one asynchronous wait operation associated with the timer.
std::size_t cancel_one(implementation_type& impl,
asio::error_code& ec)
{
return service_impl_.cancel_one(impl, ec);
}
/// Get the expiry time for the timer as an absolute time.
time_type expires_at(const implementation_type& impl) const
{
return service_impl_.expiry(impl);
}
/// Set the expiry time for the timer as an absolute time.
std::size_t expires_at(implementation_type& impl,
const time_type& expiry_time, asio::error_code& ec)
{
return service_impl_.expires_at(impl, expiry_time, ec);
}
/// Get the expiry time for the timer relative to now.
duration_type expires_from_now(const implementation_type& impl) const
{
return TimeTraits::subtract(service_impl_.expiry(impl), TimeTraits::now());
}
/// Set the expiry time for the timer relative to now.
std::size_t expires_from_now(implementation_type& impl,
const duration_type& expiry_time, asio::error_code& ec)
{
return service_impl_.expires_after(impl, expiry_time, ec);
}
// Perform a blocking wait on the timer.
void wait(implementation_type& impl, asio::error_code& ec)
{
service_impl_.wait(impl, ec);
}
// Start an asynchronous wait on the timer.
template <typename WaitHandler>
ASIO_INITFN_RESULT_TYPE(WaitHandler,
void (asio::error_code))
async_wait(implementation_type& impl,
ASIO_MOVE_ARG(WaitHandler) handler)
{
async_completion<WaitHandler,
void (asio::error_code)> init(handler);
service_impl_.async_wait(impl, init.completion_handler);
return init.result.get();
}
private:
// Destroy all user-defined handler objects owned by the service.
void shutdown()
{
service_impl_.shutdown();
}
// The platform-specific implementation.
service_impl_type service_impl_;
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(ASIO_HAS_BOOST_DATE_TIME)
// || defined(GENERATING_DOCUMENTATION)
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
#endif // ASIO_DEADLINE_TIMER_SERVICE_HPP

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//
// defer.hpp
// ~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DEFER_HPP
#define ASIO_DEFER_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/async_result.hpp"
#include "asio/detail/type_traits.hpp"
#include "asio/execution_context.hpp"
#include "asio/is_executor.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
/// Submits a completion token or function object for execution.
/**
* This function submits an object for execution using the object's associated
* executor. The function object is queued for execution, and is never called
* from the current thread prior to returning from <tt>defer()</tt>.
*
* This function has the following effects:
*
* @li Constructs a function object handler of type @c Handler, initialized
* with <tt>handler(forward<CompletionToken>(token))</tt>.
*
* @li Constructs an object @c result of type <tt>async_result<Handler></tt>,
* initializing the object as <tt>result(handler)</tt>.
*
* @li Obtains the handler's associated executor object @c ex by performing
* <tt>get_associated_executor(handler)</tt>.
*
* @li Obtains the handler's associated allocator object @c alloc by performing
* <tt>get_associated_allocator(handler)</tt>.
*
* @li Performs <tt>ex.defer(std::move(handler), alloc)</tt>.
*
* @li Returns <tt>result.get()</tt>.
*/
template <typename CompletionToken>
ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) defer(
ASIO_MOVE_ARG(CompletionToken) token);
/// Submits a completion token or function object for execution.
/**
* This function submits an object for execution using the specified executor.
* The function object is queued for execution, and is never called from the
* current thread prior to returning from <tt>defer()</tt>.
*
* This function has the following effects:
*
* @li Constructs a function object handler of type @c Handler, initialized
* with <tt>handler(forward<CompletionToken>(token))</tt>.
*
* @li Constructs an object @c result of type <tt>async_result<Handler></tt>,
* initializing the object as <tt>result(handler)</tt>.
*
* @li Obtains the handler's associated executor object @c ex1 by performing
* <tt>get_associated_executor(handler)</tt>.
*
* @li Creates a work object @c w by performing <tt>make_work(ex1)</tt>.
*
* @li Obtains the handler's associated allocator object @c alloc by performing
* <tt>get_associated_allocator(handler)</tt>.
*
* @li Constructs a function object @c f with a function call operator that
* performs <tt>ex1.dispatch(std::move(handler), alloc)</tt> followed by
* <tt>w.reset()</tt>.
*
* @li Performs <tt>Executor(ex).defer(std::move(f), alloc)</tt>.
*
* @li Returns <tt>result.get()</tt>.
*/
template <typename Executor, typename CompletionToken>
ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) defer(
const Executor& ex, ASIO_MOVE_ARG(CompletionToken) token,
typename enable_if<is_executor<Executor>::value>::type* = 0);
/// Submits a completion token or function object for execution.
/**
* @returns <tt>defer(ctx.get_executor(), forward<CompletionToken>(token))</tt>.
*/
template <typename ExecutionContext, typename CompletionToken>
ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) defer(
ExecutionContext& ctx, ASIO_MOVE_ARG(CompletionToken) token,
typename enable_if<is_convertible<
ExecutionContext&, execution_context&>::value>::type* = 0);
} // namespace asio
#include "asio/detail/pop_options.hpp"
#include "asio/impl/defer.hpp"
#endif // ASIO_DEFER_HPP

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//
// detail/array.hpp
// ~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_ARRAY_HPP
#define ASIO_DETAIL_ARRAY_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_HAS_STD_ARRAY)
# include <array>
#else // defined(ASIO_HAS_STD_ARRAY)
# include <boost/array.hpp>
#endif // defined(ASIO_HAS_STD_ARRAY)
namespace asio {
namespace detail {
#if defined(ASIO_HAS_STD_ARRAY)
using std::array;
#else // defined(ASIO_HAS_STD_ARRAY)
using boost::array;
#endif // defined(ASIO_HAS_STD_ARRAY)
} // namespace detail
} // namespace asio
#endif // ASIO_DETAIL_ARRAY_HPP

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//
// detail/array_fwd.hpp
// ~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_ARRAY_FWD_HPP
#define ASIO_DETAIL_ARRAY_FWD_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
namespace boost {
template<class T, std::size_t N>
class array;
} // namespace boost
// Standard library components can't be forward declared, so we'll have to
// include the array header. Fortunately, it's fairly lightweight and doesn't
// add significantly to the compile time.
#if defined(ASIO_HAS_STD_ARRAY)
# include <array>
#endif // defined(ASIO_HAS_STD_ARRAY)
#endif // ASIO_DETAIL_ARRAY_FWD_HPP

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//
// detail/assert.hpp
// ~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_ASSERT_HPP
#define ASIO_DETAIL_ASSERT_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_HAS_BOOST_ASSERT)
# include <boost/assert.hpp>
#else // defined(ASIO_HAS_BOOST_ASSERT)
# include <cassert>
#endif // defined(ASIO_HAS_BOOST_ASSERT)
#if defined(ASIO_HAS_BOOST_ASSERT)
# define ASIO_ASSERT(expr) BOOST_ASSERT(expr)
#else // defined(ASIO_HAS_BOOST_ASSERT)
# define ASIO_ASSERT(expr) assert(expr)
#endif // defined(ASIO_HAS_BOOST_ASSERT)
#endif // ASIO_DETAIL_ASSERT_HPP

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//
// detail/atomic_count.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_ATOMIC_COUNT_HPP
#define ASIO_DETAIL_ATOMIC_COUNT_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if !defined(ASIO_HAS_THREADS)
// Nothing to include.
#elif defined(ASIO_HAS_STD_ATOMIC)
# include <atomic>
#else // defined(ASIO_HAS_STD_ATOMIC)
# include <boost/detail/atomic_count.hpp>
#endif // defined(ASIO_HAS_STD_ATOMIC)
namespace asio {
namespace detail {
#if !defined(ASIO_HAS_THREADS)
typedef long atomic_count;
inline void increment(atomic_count& a, long b) { a += b; }
#elif defined(ASIO_HAS_STD_ATOMIC)
typedef std::atomic<long> atomic_count;
inline void increment(atomic_count& a, long b) { a += b; }
#else // defined(ASIO_HAS_STD_ATOMIC)
typedef boost::detail::atomic_count atomic_count;
inline void increment(atomic_count& a, long b) { while (b > 0) ++a, --b; }
#endif // defined(ASIO_HAS_STD_ATOMIC)
} // namespace detail
} // namespace asio
#endif // ASIO_DETAIL_ATOMIC_COUNT_HPP

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//
// detail/base_from_completion_cond.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_BASE_FROM_COMPLETION_COND_HPP
#define ASIO_DETAIL_BASE_FROM_COMPLETION_COND_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/completion_condition.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
template <typename CompletionCondition>
class base_from_completion_cond
{
protected:
explicit base_from_completion_cond(CompletionCondition completion_condition)
: completion_condition_(completion_condition)
{
}
std::size_t check_for_completion(
const asio::error_code& ec,
std::size_t total_transferred)
{
return detail::adapt_completion_condition_result(
completion_condition_(ec, total_transferred));
}
private:
CompletionCondition completion_condition_;
};
template <>
class base_from_completion_cond<transfer_all_t>
{
protected:
explicit base_from_completion_cond(transfer_all_t)
{
}
static std::size_t check_for_completion(
const asio::error_code& ec,
std::size_t total_transferred)
{
return transfer_all_t()(ec, total_transferred);
}
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_BASE_FROM_COMPLETION_COND_HPP

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//
// detail/bind_handler.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_BIND_HANDLER_HPP
#define ASIO_DETAIL_BIND_HANDLER_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/associated_allocator.hpp"
#include "asio/associated_executor.hpp"
#include "asio/detail/handler_alloc_helpers.hpp"
#include "asio/detail/handler_cont_helpers.hpp"
#include "asio/detail/handler_invoke_helpers.hpp"
#include "asio/detail/type_traits.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
template <typename Handler, typename Arg1>
class binder1
{
public:
template <typename T>
binder1(int, ASIO_MOVE_ARG(T) handler, const Arg1& arg1)
: handler_(ASIO_MOVE_CAST(T)(handler)),
arg1_(arg1)
{
}
binder1(Handler& handler, const Arg1& arg1)
: handler_(ASIO_MOVE_CAST(Handler)(handler)),
arg1_(arg1)
{
}
#if defined(ASIO_HAS_MOVE)
binder1(const binder1& other)
: handler_(other.handler_),
arg1_(other.arg1_)
{
}
binder1(binder1&& other)
: handler_(ASIO_MOVE_CAST(Handler)(other.handler_)),
arg1_(ASIO_MOVE_CAST(Arg1)(other.arg1_))
{
}
#endif // defined(ASIO_HAS_MOVE)
void operator()()
{
handler_(static_cast<const Arg1&>(arg1_));
}
void operator()() const
{
handler_(arg1_);
}
//private:
Handler handler_;
Arg1 arg1_;
};
template <typename Handler, typename Arg1>
inline void* asio_handler_allocate(std::size_t size,
binder1<Handler, Arg1>* this_handler)
{
return asio_handler_alloc_helpers::allocate(
size, this_handler->handler_);
}
template <typename Handler, typename Arg1>
inline void asio_handler_deallocate(void* pointer, std::size_t size,
binder1<Handler, Arg1>* this_handler)
{
asio_handler_alloc_helpers::deallocate(
pointer, size, this_handler->handler_);
}
template <typename Handler, typename Arg1>
inline bool asio_handler_is_continuation(
binder1<Handler, Arg1>* this_handler)
{
return asio_handler_cont_helpers::is_continuation(
this_handler->handler_);
}
template <typename Function, typename Handler, typename Arg1>
inline void asio_handler_invoke(Function& function,
binder1<Handler, Arg1>* this_handler)
{
asio_handler_invoke_helpers::invoke(
function, this_handler->handler_);
}
template <typename Function, typename Handler, typename Arg1>
inline void asio_handler_invoke(const Function& function,
binder1<Handler, Arg1>* this_handler)
{
asio_handler_invoke_helpers::invoke(
function, this_handler->handler_);
}
template <typename Handler, typename Arg1>
inline binder1<typename decay<Handler>::type, Arg1> bind_handler(
ASIO_MOVE_ARG(Handler) handler, const Arg1& arg1)
{
return binder1<typename decay<Handler>::type, Arg1>(0,
ASIO_MOVE_CAST(Handler)(handler), arg1);
}
template <typename Handler, typename Arg1, typename Arg2>
class binder2
{
public:
template <typename T>
binder2(int, ASIO_MOVE_ARG(T) handler,
const Arg1& arg1, const Arg2& arg2)
: handler_(ASIO_MOVE_CAST(T)(handler)),
arg1_(arg1),
arg2_(arg2)
{
}
binder2(Handler& handler, const Arg1& arg1, const Arg2& arg2)
: handler_(ASIO_MOVE_CAST(Handler)(handler)),
arg1_(arg1),
arg2_(arg2)
{
}
#if defined(ASIO_HAS_MOVE)
binder2(const binder2& other)
: handler_(other.handler_),
arg1_(other.arg1_),
arg2_(other.arg2_)
{
}
binder2(binder2&& other)
: handler_(ASIO_MOVE_CAST(Handler)(other.handler_)),
arg1_(ASIO_MOVE_CAST(Arg1)(other.arg1_)),
arg2_(ASIO_MOVE_CAST(Arg2)(other.arg2_))
{
}
#endif // defined(ASIO_HAS_MOVE)
void operator()()
{
handler_(static_cast<const Arg1&>(arg1_),
static_cast<const Arg2&>(arg2_));
}
void operator()() const
{
handler_(arg1_, arg2_);
}
//private:
Handler handler_;
Arg1 arg1_;
Arg2 arg2_;
};
template <typename Handler, typename Arg1, typename Arg2>
inline void* asio_handler_allocate(std::size_t size,
binder2<Handler, Arg1, Arg2>* this_handler)
{
return asio_handler_alloc_helpers::allocate(
size, this_handler->handler_);
}
template <typename Handler, typename Arg1, typename Arg2>
inline void asio_handler_deallocate(void* pointer, std::size_t size,
binder2<Handler, Arg1, Arg2>* this_handler)
{
asio_handler_alloc_helpers::deallocate(
pointer, size, this_handler->handler_);
}
template <typename Handler, typename Arg1, typename Arg2>
inline bool asio_handler_is_continuation(
binder2<Handler, Arg1, Arg2>* this_handler)
{
return asio_handler_cont_helpers::is_continuation(
this_handler->handler_);
}
template <typename Function, typename Handler, typename Arg1, typename Arg2>
inline void asio_handler_invoke(Function& function,
binder2<Handler, Arg1, Arg2>* this_handler)
{
asio_handler_invoke_helpers::invoke(
function, this_handler->handler_);
}
template <typename Function, typename Handler, typename Arg1, typename Arg2>
inline void asio_handler_invoke(const Function& function,
binder2<Handler, Arg1, Arg2>* this_handler)
{
asio_handler_invoke_helpers::invoke(
function, this_handler->handler_);
}
template <typename Handler, typename Arg1, typename Arg2>
inline binder2<typename decay<Handler>::type, Arg1, Arg2> bind_handler(
ASIO_MOVE_ARG(Handler) handler, const Arg1& arg1, const Arg2& arg2)
{
return binder2<typename decay<Handler>::type, Arg1, Arg2>(0,
ASIO_MOVE_CAST(Handler)(handler), arg1, arg2);
}
template <typename Handler, typename Arg1, typename Arg2, typename Arg3>
class binder3
{
public:
template <typename T>
binder3(int, ASIO_MOVE_ARG(T) handler, const Arg1& arg1,
const Arg2& arg2, const Arg3& arg3)
: handler_(ASIO_MOVE_CAST(T)(handler)),
arg1_(arg1),
arg2_(arg2),
arg3_(arg3)
{
}
binder3(Handler& handler, const Arg1& arg1,
const Arg2& arg2, const Arg3& arg3)
: handler_(ASIO_MOVE_CAST(Handler)(handler)),
arg1_(arg1),
arg2_(arg2),
arg3_(arg3)
{
}
#if defined(ASIO_HAS_MOVE)
binder3(const binder3& other)
: handler_(other.handler_),
arg1_(other.arg1_),
arg2_(other.arg2_),
arg3_(other.arg3_)
{
}
binder3(binder3&& other)
: handler_(ASIO_MOVE_CAST(Handler)(other.handler_)),
arg1_(ASIO_MOVE_CAST(Arg1)(other.arg1_)),
arg2_(ASIO_MOVE_CAST(Arg2)(other.arg2_)),
arg3_(ASIO_MOVE_CAST(Arg3)(other.arg3_))
{
}
#endif // defined(ASIO_HAS_MOVE)
void operator()()
{
handler_(static_cast<const Arg1&>(arg1_),
static_cast<const Arg2&>(arg2_), static_cast<const Arg3&>(arg3_));
}
void operator()() const
{
handler_(arg1_, arg2_, arg3_);
}
//private:
Handler handler_;
Arg1 arg1_;
Arg2 arg2_;
Arg3 arg3_;
};
template <typename Handler, typename Arg1, typename Arg2, typename Arg3>
inline void* asio_handler_allocate(std::size_t size,
binder3<Handler, Arg1, Arg2, Arg3>* this_handler)
{
return asio_handler_alloc_helpers::allocate(
size, this_handler->handler_);
}
template <typename Handler, typename Arg1, typename Arg2, typename Arg3>
inline void asio_handler_deallocate(void* pointer, std::size_t size,
binder3<Handler, Arg1, Arg2, Arg3>* this_handler)
{
asio_handler_alloc_helpers::deallocate(
pointer, size, this_handler->handler_);
}
template <typename Handler, typename Arg1, typename Arg2, typename Arg3>
inline bool asio_handler_is_continuation(
binder3<Handler, Arg1, Arg2, Arg3>* this_handler)
{
return asio_handler_cont_helpers::is_continuation(
this_handler->handler_);
}
template <typename Function, typename Handler,
typename Arg1, typename Arg2, typename Arg3>
inline void asio_handler_invoke(Function& function,
binder3<Handler, Arg1, Arg2, Arg3>* this_handler)
{
asio_handler_invoke_helpers::invoke(
function, this_handler->handler_);
}
template <typename Function, typename Handler,
typename Arg1, typename Arg2, typename Arg3>
inline void asio_handler_invoke(const Function& function,
binder3<Handler, Arg1, Arg2, Arg3>* this_handler)
{
asio_handler_invoke_helpers::invoke(
function, this_handler->handler_);
}
template <typename Handler, typename Arg1, typename Arg2, typename Arg3>
inline binder3<typename decay<Handler>::type, Arg1, Arg2, Arg3> bind_handler(
ASIO_MOVE_ARG(Handler) handler, const Arg1& arg1, const Arg2& arg2,
const Arg3& arg3)
{
return binder3<typename decay<Handler>::type, Arg1, Arg2, Arg3>(0,
ASIO_MOVE_CAST(Handler)(handler), arg1, arg2, arg3);
}
template <typename Handler, typename Arg1,
typename Arg2, typename Arg3, typename Arg4>
class binder4
{
public:
template <typename T>
binder4(int, ASIO_MOVE_ARG(T) handler, const Arg1& arg1,
const Arg2& arg2, const Arg3& arg3, const Arg4& arg4)
: handler_(ASIO_MOVE_CAST(T)(handler)),
arg1_(arg1),
arg2_(arg2),
arg3_(arg3),
arg4_(arg4)
{
}
binder4(Handler& handler, const Arg1& arg1,
const Arg2& arg2, const Arg3& arg3, const Arg4& arg4)
: handler_(ASIO_MOVE_CAST(Handler)(handler)),
arg1_(arg1),
arg2_(arg2),
arg3_(arg3),
arg4_(arg4)
{
}
#if defined(ASIO_HAS_MOVE)
binder4(const binder4& other)
: handler_(other.handler_),
arg1_(other.arg1_),
arg2_(other.arg2_),
arg3_(other.arg3_),
arg4_(other.arg4_)
{
}
binder4(binder4&& other)
: handler_(ASIO_MOVE_CAST(Handler)(other.handler_)),
arg1_(ASIO_MOVE_CAST(Arg1)(other.arg1_)),
arg2_(ASIO_MOVE_CAST(Arg2)(other.arg2_)),
arg3_(ASIO_MOVE_CAST(Arg3)(other.arg3_)),
arg4_(ASIO_MOVE_CAST(Arg4)(other.arg4_))
{
}
#endif // defined(ASIO_HAS_MOVE)
void operator()()
{
handler_(static_cast<const Arg1&>(arg1_),
static_cast<const Arg2&>(arg2_), static_cast<const Arg3&>(arg3_),
static_cast<const Arg4&>(arg4_));
}
void operator()() const
{
handler_(arg1_, arg2_, arg3_, arg4_);
}
//private:
Handler handler_;
Arg1 arg1_;
Arg2 arg2_;
Arg3 arg3_;
Arg4 arg4_;
};
template <typename Handler, typename Arg1,
typename Arg2, typename Arg3, typename Arg4>
inline void* asio_handler_allocate(std::size_t size,
binder4<Handler, Arg1, Arg2, Arg3, Arg4>* this_handler)
{
return asio_handler_alloc_helpers::allocate(
size, this_handler->handler_);
}
template <typename Handler, typename Arg1,
typename Arg2, typename Arg3, typename Arg4>
inline void asio_handler_deallocate(void* pointer, std::size_t size,
binder4<Handler, Arg1, Arg2, Arg3, Arg4>* this_handler)
{
asio_handler_alloc_helpers::deallocate(
pointer, size, this_handler->handler_);
}
template <typename Handler, typename Arg1,
typename Arg2, typename Arg3, typename Arg4>
inline bool asio_handler_is_continuation(
binder4<Handler, Arg1, Arg2, Arg3, Arg4>* this_handler)
{
return asio_handler_cont_helpers::is_continuation(
this_handler->handler_);
}
template <typename Function, typename Handler, typename Arg1,
typename Arg2, typename Arg3, typename Arg4>
inline void asio_handler_invoke(Function& function,
binder4<Handler, Arg1, Arg2, Arg3, Arg4>* this_handler)
{
asio_handler_invoke_helpers::invoke(
function, this_handler->handler_);
}
template <typename Function, typename Handler, typename Arg1,
typename Arg2, typename Arg3, typename Arg4>
inline void asio_handler_invoke(const Function& function,
binder4<Handler, Arg1, Arg2, Arg3, Arg4>* this_handler)
{
asio_handler_invoke_helpers::invoke(
function, this_handler->handler_);
}
template <typename Handler, typename Arg1,
typename Arg2, typename Arg3, typename Arg4>
inline binder4<typename decay<Handler>::type, Arg1, Arg2, Arg3, Arg4>
bind_handler(ASIO_MOVE_ARG(Handler) handler, const Arg1& arg1,
const Arg2& arg2, const Arg3& arg3, const Arg4& arg4)
{
return binder4<typename decay<Handler>::type, Arg1, Arg2, Arg3, Arg4>(0,
ASIO_MOVE_CAST(Handler)(handler), arg1, arg2, arg3, arg4);
}
template <typename Handler, typename Arg1, typename Arg2,
typename Arg3, typename Arg4, typename Arg5>
class binder5
{
public:
template <typename T>
binder5(int, ASIO_MOVE_ARG(T) handler, const Arg1& arg1,
const Arg2& arg2, const Arg3& arg3, const Arg4& arg4, const Arg5& arg5)
: handler_(ASIO_MOVE_CAST(T)(handler)),
arg1_(arg1),
arg2_(arg2),
arg3_(arg3),
arg4_(arg4),
arg5_(arg5)
{
}
binder5(Handler& handler, const Arg1& arg1, const Arg2& arg2,
const Arg3& arg3, const Arg4& arg4, const Arg5& arg5)
: handler_(ASIO_MOVE_CAST(Handler)(handler)),
arg1_(arg1),
arg2_(arg2),
arg3_(arg3),
arg4_(arg4),
arg5_(arg5)
{
}
#if defined(ASIO_HAS_MOVE)
binder5(const binder5& other)
: handler_(other.handler_),
arg1_(other.arg1_),
arg2_(other.arg2_),
arg3_(other.arg3_),
arg4_(other.arg4_),
arg5_(other.arg5_)
{
}
binder5(binder5&& other)
: handler_(ASIO_MOVE_CAST(Handler)(other.handler_)),
arg1_(ASIO_MOVE_CAST(Arg1)(other.arg1_)),
arg2_(ASIO_MOVE_CAST(Arg2)(other.arg2_)),
arg3_(ASIO_MOVE_CAST(Arg3)(other.arg3_)),
arg4_(ASIO_MOVE_CAST(Arg4)(other.arg4_)),
arg5_(ASIO_MOVE_CAST(Arg5)(other.arg5_))
{
}
#endif // defined(ASIO_HAS_MOVE)
void operator()()
{
handler_(static_cast<const Arg1&>(arg1_),
static_cast<const Arg2&>(arg2_), static_cast<const Arg3&>(arg3_),
static_cast<const Arg4&>(arg4_), static_cast<const Arg5&>(arg5_));
}
void operator()() const
{
handler_(arg1_, arg2_, arg3_, arg4_, arg5_);
}
//private:
Handler handler_;
Arg1 arg1_;
Arg2 arg2_;
Arg3 arg3_;
Arg4 arg4_;
Arg5 arg5_;
};
template <typename Handler, typename Arg1, typename Arg2,
typename Arg3, typename Arg4, typename Arg5>
inline void* asio_handler_allocate(std::size_t size,
binder5<Handler, Arg1, Arg2, Arg3, Arg4, Arg5>* this_handler)
{
return asio_handler_alloc_helpers::allocate(
size, this_handler->handler_);
}
template <typename Handler, typename Arg1, typename Arg2,
typename Arg3, typename Arg4, typename Arg5>
inline void asio_handler_deallocate(void* pointer, std::size_t size,
binder5<Handler, Arg1, Arg2, Arg3, Arg4, Arg5>* this_handler)
{
asio_handler_alloc_helpers::deallocate(
pointer, size, this_handler->handler_);
}
template <typename Handler, typename Arg1, typename Arg2,
typename Arg3, typename Arg4, typename Arg5>
inline bool asio_handler_is_continuation(
binder5<Handler, Arg1, Arg2, Arg3, Arg4, Arg5>* this_handler)
{
return asio_handler_cont_helpers::is_continuation(
this_handler->handler_);
}
template <typename Function, typename Handler, typename Arg1,
typename Arg2, typename Arg3, typename Arg4, typename Arg5>
inline void asio_handler_invoke(Function& function,
binder5<Handler, Arg1, Arg2, Arg3, Arg4, Arg5>* this_handler)
{
asio_handler_invoke_helpers::invoke(
function, this_handler->handler_);
}
template <typename Function, typename Handler, typename Arg1,
typename Arg2, typename Arg3, typename Arg4, typename Arg5>
inline void asio_handler_invoke(const Function& function,
binder5<Handler, Arg1, Arg2, Arg3, Arg4, Arg5>* this_handler)
{
asio_handler_invoke_helpers::invoke(
function, this_handler->handler_);
}
template <typename Handler, typename Arg1, typename Arg2,
typename Arg3, typename Arg4, typename Arg5>
inline binder5<typename decay<Handler>::type, Arg1, Arg2, Arg3, Arg4, Arg5>
bind_handler(ASIO_MOVE_ARG(Handler) handler, const Arg1& arg1,
const Arg2& arg2, const Arg3& arg3, const Arg4& arg4, const Arg5& arg5)
{
return binder5<typename decay<Handler>::type, Arg1, Arg2, Arg3, Arg4, Arg5>(0,
ASIO_MOVE_CAST(Handler)(handler), arg1, arg2, arg3, arg4, arg5);
}
#if defined(ASIO_HAS_MOVE)
template <typename Handler, typename Arg1>
class move_binder1
{
public:
move_binder1(int, ASIO_MOVE_ARG(Handler) handler,
ASIO_MOVE_ARG(Arg1) arg1)
: handler_(ASIO_MOVE_CAST(Handler)(handler)),
arg1_(ASIO_MOVE_CAST(Arg1)(arg1))
{
}
move_binder1(move_binder1&& other)
: handler_(ASIO_MOVE_CAST(Handler)(other.handler_)),
arg1_(ASIO_MOVE_CAST(Arg1)(other.arg1_))
{
}
void operator()()
{
handler_(ASIO_MOVE_CAST(Arg1)(arg1_));
}
//private:
Handler handler_;
Arg1 arg1_;
};
template <typename Handler, typename Arg1>
inline void* asio_handler_allocate(std::size_t size,
move_binder1<Handler, Arg1>* this_handler)
{
return asio_handler_alloc_helpers::allocate(
size, this_handler->handler_);
}
template <typename Handler, typename Arg1>
inline void asio_handler_deallocate(void* pointer, std::size_t size,
move_binder1<Handler, Arg1>* this_handler)
{
asio_handler_alloc_helpers::deallocate(
pointer, size, this_handler->handler_);
}
template <typename Handler, typename Arg1>
inline bool asio_handler_is_continuation(
move_binder1<Handler, Arg1>* this_handler)
{
return asio_handler_cont_helpers::is_continuation(
this_handler->handler_);
}
template <typename Function, typename Handler, typename Arg1>
inline void asio_handler_invoke(ASIO_MOVE_ARG(Function) function,
move_binder1<Handler, Arg1>* this_handler)
{
asio_handler_invoke_helpers::invoke(
ASIO_MOVE_CAST(Function)(function), this_handler->handler_);
}
template <typename Handler, typename Arg1, typename Arg2>
class move_binder2
{
public:
move_binder2(int, ASIO_MOVE_ARG(Handler) handler,
const Arg1& arg1, ASIO_MOVE_ARG(Arg2) arg2)
: handler_(ASIO_MOVE_CAST(Handler)(handler)),
arg1_(arg1),
arg2_(ASIO_MOVE_CAST(Arg2)(arg2))
{
}
move_binder2(move_binder2&& other)
: handler_(ASIO_MOVE_CAST(Handler)(other.handler_)),
arg1_(ASIO_MOVE_CAST(Arg1)(other.arg1_)),
arg2_(ASIO_MOVE_CAST(Arg2)(other.arg2_))
{
}
void operator()()
{
handler_(static_cast<const Arg1&>(arg1_),
ASIO_MOVE_CAST(Arg2)(arg2_));
}
//private:
Handler handler_;
Arg1 arg1_;
Arg2 arg2_;
};
template <typename Handler, typename Arg1, typename Arg2>
inline void* asio_handler_allocate(std::size_t size,
move_binder2<Handler, Arg1, Arg2>* this_handler)
{
return asio_handler_alloc_helpers::allocate(
size, this_handler->handler_);
}
template <typename Handler, typename Arg1, typename Arg2>
inline void asio_handler_deallocate(void* pointer, std::size_t size,
move_binder2<Handler, Arg1, Arg2>* this_handler)
{
asio_handler_alloc_helpers::deallocate(
pointer, size, this_handler->handler_);
}
template <typename Handler, typename Arg1, typename Arg2>
inline bool asio_handler_is_continuation(
move_binder2<Handler, Arg1, Arg2>* this_handler)
{
return asio_handler_cont_helpers::is_continuation(
this_handler->handler_);
}
template <typename Function, typename Handler, typename Arg1, typename Arg2>
inline void asio_handler_invoke(ASIO_MOVE_ARG(Function) function,
move_binder2<Handler, Arg1, Arg2>* this_handler)
{
asio_handler_invoke_helpers::invoke(
ASIO_MOVE_CAST(Function)(function), this_handler->handler_);
}
#endif // defined(ASIO_HAS_MOVE)
} // namespace detail
template <typename Handler, typename Arg1, typename Allocator>
struct associated_allocator<detail::binder1<Handler, Arg1>, Allocator>
{
typedef typename associated_allocator<Handler, Allocator>::type type;
static type get(const detail::binder1<Handler, Arg1>& h,
const Allocator& a = Allocator()) ASIO_NOEXCEPT
{
return associated_allocator<Handler, Allocator>::get(h.handler_, a);
}
};
template <typename Handler, typename Arg1, typename Arg2, typename Allocator>
struct associated_allocator<detail::binder2<Handler, Arg1, Arg2>, Allocator>
{
typedef typename associated_allocator<Handler, Allocator>::type type;
static type get(const detail::binder2<Handler, Arg1, Arg2>& h,
const Allocator& a = Allocator()) ASIO_NOEXCEPT
{
return associated_allocator<Handler, Allocator>::get(h.handler_, a);
}
};
template <typename Handler, typename Arg1, typename Executor>
struct associated_executor<detail::binder1<Handler, Arg1>, Executor>
{
typedef typename associated_executor<Handler, Executor>::type type;
static type get(const detail::binder1<Handler, Arg1>& h,
const Executor& ex = Executor()) ASIO_NOEXCEPT
{
return associated_executor<Handler, Executor>::get(h.handler_, ex);
}
};
template <typename Handler, typename Arg1, typename Arg2, typename Executor>
struct associated_executor<detail::binder2<Handler, Arg1, Arg2>, Executor>
{
typedef typename associated_executor<Handler, Executor>::type type;
static type get(const detail::binder2<Handler, Arg1, Arg2>& h,
const Executor& ex = Executor()) ASIO_NOEXCEPT
{
return associated_executor<Handler, Executor>::get(h.handler_, ex);
}
};
#if defined(ASIO_HAS_MOVE)
template <typename Handler, typename Arg1, typename Allocator>
struct associated_allocator<detail::move_binder1<Handler, Arg1>, Allocator>
{
typedef typename associated_allocator<Handler, Allocator>::type type;
static type get(const detail::move_binder1<Handler, Arg1>& h,
const Allocator& a = Allocator()) ASIO_NOEXCEPT
{
return associated_allocator<Handler, Allocator>::get(h.handler_, a);
}
};
template <typename Handler, typename Arg1, typename Arg2, typename Allocator>
struct associated_allocator<
detail::move_binder2<Handler, Arg1, Arg2>, Allocator>
{
typedef typename associated_allocator<Handler, Allocator>::type type;
static type get(const detail::move_binder2<Handler, Arg1, Arg2>& h,
const Allocator& a = Allocator()) ASIO_NOEXCEPT
{
return associated_allocator<Handler, Allocator>::get(h.handler_, a);
}
};
template <typename Handler, typename Arg1, typename Executor>
struct associated_executor<detail::move_binder1<Handler, Arg1>, Executor>
{
typedef typename associated_executor<Handler, Executor>::type type;
static type get(const detail::move_binder1<Handler, Arg1>& h,
const Executor& ex = Executor()) ASIO_NOEXCEPT
{
return associated_executor<Handler, Executor>::get(h.handler_, ex);
}
};
template <typename Handler, typename Arg1, typename Arg2, typename Executor>
struct associated_executor<detail::move_binder2<Handler, Arg1, Arg2>, Executor>
{
typedef typename associated_executor<Handler, Executor>::type type;
static type get(const detail::move_binder2<Handler, Arg1, Arg2>& h,
const Executor& ex = Executor()) ASIO_NOEXCEPT
{
return associated_executor<Handler, Executor>::get(h.handler_, ex);
}
};
#endif // defined(ASIO_HAS_MOVE)
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_BIND_HANDLER_HPP

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//
// detail/buffer_resize_guard.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_BUFFER_RESIZE_GUARD_HPP
#define ASIO_DETAIL_BUFFER_RESIZE_GUARD_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/detail/limits.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
// Helper class to manage buffer resizing in an exception safe way.
template <typename Buffer>
class buffer_resize_guard
{
public:
// Constructor.
buffer_resize_guard(Buffer& buffer)
: buffer_(buffer),
old_size_(buffer.size())
{
}
// Destructor rolls back the buffer resize unless commit was called.
~buffer_resize_guard()
{
if (old_size_ != (std::numeric_limits<size_t>::max)())
{
buffer_.resize(old_size_);
}
}
// Commit the resize transaction.
void commit()
{
old_size_ = (std::numeric_limits<size_t>::max)();
}
private:
// The buffer being managed.
Buffer& buffer_;
// The size of the buffer at the time the guard was constructed.
size_t old_size_;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_BUFFER_RESIZE_GUARD_HPP

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//
// detail/buffer_sequence_adapter.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_BUFFER_SEQUENCE_ADAPTER_HPP
#define ASIO_DETAIL_BUFFER_SEQUENCE_ADAPTER_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/buffer.hpp"
#include "asio/detail/array_fwd.hpp"
#include "asio/detail/socket_types.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
class buffer_sequence_adapter_base
{
#if defined(ASIO_WINDOWS_RUNTIME)
public:
// The maximum number of buffers to support in a single operation.
enum { max_buffers = 1 };
protected:
typedef Windows::Storage::Streams::IBuffer^ native_buffer_type;
ASIO_DECL static void init_native_buffer(
native_buffer_type& buf,
const asio::mutable_buffer& buffer);
ASIO_DECL static void init_native_buffer(
native_buffer_type& buf,
const asio::const_buffer& buffer);
#elif defined(ASIO_WINDOWS) || defined(__CYGWIN__)
public:
// The maximum number of buffers to support in a single operation.
enum { max_buffers = 64 < max_iov_len ? 64 : max_iov_len };
protected:
typedef WSABUF native_buffer_type;
static void init_native_buffer(WSABUF& buf,
const asio::mutable_buffer& buffer)
{
buf.buf = static_cast<char*>(buffer.data());
buf.len = static_cast<ULONG>(buffer.size());
}
static void init_native_buffer(WSABUF& buf,
const asio::const_buffer& buffer)
{
buf.buf = const_cast<char*>(static_cast<const char*>(buffer.data()));
buf.len = static_cast<ULONG>(buffer.size());
}
#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
public:
// The maximum number of buffers to support in a single operation.
enum { max_buffers = 64 < max_iov_len ? 64 : max_iov_len };
protected:
typedef iovec native_buffer_type;
static void init_iov_base(void*& base, void* addr)
{
base = addr;
}
template <typename T>
static void init_iov_base(T& base, void* addr)
{
base = static_cast<T>(addr);
}
static void init_native_buffer(iovec& iov,
const asio::mutable_buffer& buffer)
{
init_iov_base(iov.iov_base, buffer.data());
iov.iov_len = buffer.size();
}
static void init_native_buffer(iovec& iov,
const asio::const_buffer& buffer)
{
init_iov_base(iov.iov_base, const_cast<void*>(buffer.data()));
iov.iov_len = buffer.size();
}
#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
};
// Helper class to translate buffers into the native buffer representation.
template <typename Buffer, typename Buffers>
class buffer_sequence_adapter
: buffer_sequence_adapter_base
{
public:
explicit buffer_sequence_adapter(const Buffers& buffer_sequence)
: count_(0), total_buffer_size_(0)
{
buffer_sequence_adapter::init(
asio::buffer_sequence_begin(buffer_sequence),
asio::buffer_sequence_end(buffer_sequence));
}
native_buffer_type* buffers()
{
return buffers_;
}
std::size_t count() const
{
return count_;
}
std::size_t total_size() const
{
return total_buffer_size_;
}
bool all_empty() const
{
return total_buffer_size_ == 0;
}
static bool all_empty(const Buffers& buffer_sequence)
{
return buffer_sequence_adapter::all_empty(
asio::buffer_sequence_begin(buffer_sequence),
asio::buffer_sequence_end(buffer_sequence));
}
static void validate(const Buffers& buffer_sequence)
{
buffer_sequence_adapter::validate(
asio::buffer_sequence_begin(buffer_sequence),
asio::buffer_sequence_end(buffer_sequence));
}
static Buffer first(const Buffers& buffer_sequence)
{
return buffer_sequence_adapter::first(
asio::buffer_sequence_begin(buffer_sequence),
asio::buffer_sequence_end(buffer_sequence));
}
private:
template <typename Iterator>
void init(Iterator begin, Iterator end)
{
Iterator iter = begin;
for (; iter != end && count_ < max_buffers; ++iter, ++count_)
{
Buffer buffer(*iter);
init_native_buffer(buffers_[count_], buffer);
total_buffer_size_ += buffer.size();
}
}
template <typename Iterator>
static bool all_empty(Iterator begin, Iterator end)
{
Iterator iter = begin;
std::size_t i = 0;
for (; iter != end && i < max_buffers; ++iter, ++i)
if (Buffer(*iter).size() > 0)
return false;
return true;
}
template <typename Iterator>
static void validate(Iterator begin, Iterator end)
{
Iterator iter = begin;
for (; iter != end; ++iter)
{
Buffer buffer(*iter);
buffer.data();
}
}
template <typename Iterator>
static Buffer first(Iterator begin, Iterator end)
{
Iterator iter = begin;
for (; iter != end; ++iter)
{
Buffer buffer(*iter);
if (buffer.size() != 0)
return buffer;
}
return Buffer();
}
native_buffer_type buffers_[max_buffers];
std::size_t count_;
std::size_t total_buffer_size_;
};
template <typename Buffer>
class buffer_sequence_adapter<Buffer, asio::mutable_buffer>
: buffer_sequence_adapter_base
{
public:
explicit buffer_sequence_adapter(
const asio::mutable_buffer& buffer_sequence)
{
init_native_buffer(buffer_, Buffer(buffer_sequence));
total_buffer_size_ = buffer_sequence.size();
}
native_buffer_type* buffers()
{
return &buffer_;
}
std::size_t count() const
{
return 1;
}
std::size_t total_size() const
{
return total_buffer_size_;
}
bool all_empty() const
{
return total_buffer_size_ == 0;
}
static bool all_empty(const asio::mutable_buffer& buffer_sequence)
{
return buffer_sequence.size() == 0;
}
static void validate(const asio::mutable_buffer& buffer_sequence)
{
buffer_sequence.data();
}
static Buffer first(const asio::mutable_buffer& buffer_sequence)
{
return Buffer(buffer_sequence);
}
private:
native_buffer_type buffer_;
std::size_t total_buffer_size_;
};
template <typename Buffer>
class buffer_sequence_adapter<Buffer, asio::const_buffer>
: buffer_sequence_adapter_base
{
public:
explicit buffer_sequence_adapter(
const asio::const_buffer& buffer_sequence)
{
init_native_buffer(buffer_, Buffer(buffer_sequence));
total_buffer_size_ = buffer_sequence.size();
}
native_buffer_type* buffers()
{
return &buffer_;
}
std::size_t count() const
{
return 1;
}
std::size_t total_size() const
{
return total_buffer_size_;
}
bool all_empty() const
{
return total_buffer_size_ == 0;
}
static bool all_empty(const asio::const_buffer& buffer_sequence)
{
return buffer_sequence.size() == 0;
}
static void validate(const asio::const_buffer& buffer_sequence)
{
buffer_sequence.data();
}
static Buffer first(const asio::const_buffer& buffer_sequence)
{
return Buffer(buffer_sequence);
}
private:
native_buffer_type buffer_;
std::size_t total_buffer_size_;
};
#if !defined(ASIO_NO_DEPRECATED)
template <typename Buffer>
class buffer_sequence_adapter<Buffer, asio::mutable_buffers_1>
: buffer_sequence_adapter_base
{
public:
explicit buffer_sequence_adapter(
const asio::mutable_buffers_1& buffer_sequence)
{
init_native_buffer(buffer_, Buffer(buffer_sequence));
total_buffer_size_ = buffer_sequence.size();
}
native_buffer_type* buffers()
{
return &buffer_;
}
std::size_t count() const
{
return 1;
}
std::size_t total_size() const
{
return total_buffer_size_;
}
bool all_empty() const
{
return total_buffer_size_ == 0;
}
static bool all_empty(const asio::mutable_buffers_1& buffer_sequence)
{
return buffer_sequence.size() == 0;
}
static void validate(const asio::mutable_buffers_1& buffer_sequence)
{
buffer_sequence.data();
}
static Buffer first(const asio::mutable_buffers_1& buffer_sequence)
{
return Buffer(buffer_sequence);
}
private:
native_buffer_type buffer_;
std::size_t total_buffer_size_;
};
template <typename Buffer>
class buffer_sequence_adapter<Buffer, asio::const_buffers_1>
: buffer_sequence_adapter_base
{
public:
explicit buffer_sequence_adapter(
const asio::const_buffers_1& buffer_sequence)
{
init_native_buffer(buffer_, Buffer(buffer_sequence));
total_buffer_size_ = buffer_sequence.size();
}
native_buffer_type* buffers()
{
return &buffer_;
}
std::size_t count() const
{
return 1;
}
std::size_t total_size() const
{
return total_buffer_size_;
}
bool all_empty() const
{
return total_buffer_size_ == 0;
}
static bool all_empty(const asio::const_buffers_1& buffer_sequence)
{
return buffer_sequence.size() == 0;
}
static void validate(const asio::const_buffers_1& buffer_sequence)
{
buffer_sequence.data();
}
static Buffer first(const asio::const_buffers_1& buffer_sequence)
{
return Buffer(buffer_sequence);
}
private:
native_buffer_type buffer_;
std::size_t total_buffer_size_;
};
#endif // !defined(ASIO_NO_DEPRECATED)
template <typename Buffer, typename Elem>
class buffer_sequence_adapter<Buffer, boost::array<Elem, 2> >
: buffer_sequence_adapter_base
{
public:
explicit buffer_sequence_adapter(
const boost::array<Elem, 2>& buffer_sequence)
{
init_native_buffer(buffers_[0], Buffer(buffer_sequence[0]));
init_native_buffer(buffers_[1], Buffer(buffer_sequence[1]));
total_buffer_size_ = buffer_sequence[0].size() + buffer_sequence[1].size();
}
native_buffer_type* buffers()
{
return buffers_;
}
std::size_t count() const
{
return 2;
}
std::size_t total_size() const
{
return total_buffer_size_;
}
bool all_empty() const
{
return total_buffer_size_ == 0;
}
static bool all_empty(const boost::array<Elem, 2>& buffer_sequence)
{
return buffer_sequence[0].size() == 0 && buffer_sequence[1].size() == 0;
}
static void validate(const boost::array<Elem, 2>& buffer_sequence)
{
buffer_sequence[0].data();
buffer_sequence[1].data();
}
static Buffer first(const boost::array<Elem, 2>& buffer_sequence)
{
return Buffer(buffer_sequence[0].size() != 0
? buffer_sequence[0] : buffer_sequence[1]);
}
private:
native_buffer_type buffers_[2];
std::size_t total_buffer_size_;
};
#if defined(ASIO_HAS_STD_ARRAY)
template <typename Buffer, typename Elem>
class buffer_sequence_adapter<Buffer, std::array<Elem, 2> >
: buffer_sequence_adapter_base
{
public:
explicit buffer_sequence_adapter(
const std::array<Elem, 2>& buffer_sequence)
{
init_native_buffer(buffers_[0], Buffer(buffer_sequence[0]));
init_native_buffer(buffers_[1], Buffer(buffer_sequence[1]));
total_buffer_size_ = buffer_sequence[0].size() + buffer_sequence[1].size();
}
native_buffer_type* buffers()
{
return buffers_;
}
std::size_t count() const
{
return 2;
}
std::size_t total_size() const
{
return total_buffer_size_;
}
bool all_empty() const
{
return total_buffer_size_ == 0;
}
static bool all_empty(const std::array<Elem, 2>& buffer_sequence)
{
return buffer_sequence[0].size() == 0 && buffer_sequence[1].size() == 0;
}
static void validate(const std::array<Elem, 2>& buffer_sequence)
{
buffer_sequence[0].data();
buffer_sequence[1].data();
}
static Buffer first(const std::array<Elem, 2>& buffer_sequence)
{
return Buffer(buffer_sequence[0].size() != 0
? buffer_sequence[0] : buffer_sequence[1]);
}
private:
native_buffer_type buffers_[2];
std::size_t total_buffer_size_;
};
#endif // defined(ASIO_HAS_STD_ARRAY)
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#if defined(ASIO_HEADER_ONLY)
# include "asio/detail/impl/buffer_sequence_adapter.ipp"
#endif // defined(ASIO_HEADER_ONLY)
#endif // ASIO_DETAIL_BUFFER_SEQUENCE_ADAPTER_HPP

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//
// detail/buffered_stream_storage.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_BUFFERED_STREAM_STORAGE_HPP
#define ASIO_DETAIL_BUFFERED_STREAM_STORAGE_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/buffer.hpp"
#include "asio/detail/assert.hpp"
#include <cstddef>
#include <cstring>
#include <vector>
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
class buffered_stream_storage
{
public:
// The type of the bytes stored in the buffer.
typedef unsigned char byte_type;
// The type used for offsets into the buffer.
typedef std::size_t size_type;
// Constructor.
explicit buffered_stream_storage(std::size_t buffer_capacity)
: begin_offset_(0),
end_offset_(0),
buffer_(buffer_capacity)
{
}
/// Clear the buffer.
void clear()
{
begin_offset_ = 0;
end_offset_ = 0;
}
// Return a pointer to the beginning of the unread data.
mutable_buffer data()
{
return asio::buffer(buffer_) + begin_offset_;
}
// Return a pointer to the beginning of the unread data.
const_buffer data() const
{
return asio::buffer(buffer_) + begin_offset_;
}
// Is there no unread data in the buffer.
bool empty() const
{
return begin_offset_ == end_offset_;
}
// Return the amount of unread data the is in the buffer.
size_type size() const
{
return end_offset_ - begin_offset_;
}
// Resize the buffer to the specified length.
void resize(size_type length)
{
ASIO_ASSERT(length <= capacity());
if (begin_offset_ + length <= capacity())
{
end_offset_ = begin_offset_ + length;
}
else
{
using namespace std; // For memmove.
memmove(&buffer_[0], &buffer_[0] + begin_offset_, size());
end_offset_ = length;
begin_offset_ = 0;
}
}
// Return the maximum size for data in the buffer.
size_type capacity() const
{
return buffer_.size();
}
// Consume multiple bytes from the beginning of the buffer.
void consume(size_type count)
{
ASIO_ASSERT(begin_offset_ + count <= end_offset_);
begin_offset_ += count;
if (empty())
clear();
}
private:
// The offset to the beginning of the unread data.
size_type begin_offset_;
// The offset to the end of the unread data.
size_type end_offset_;
// The data in the buffer.
std::vector<byte_type> buffer_;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_BUFFERED_STREAM_STORAGE_HPP

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//
// detail/call_stack.hpp
// ~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_CALL_STACK_HPP
#define ASIO_DETAIL_CALL_STACK_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/detail/noncopyable.hpp"
#include "asio/detail/tss_ptr.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
// Helper class to determine whether or not the current thread is inside an
// invocation of io_context::run() for a specified io_context object.
template <typename Key, typename Value = unsigned char>
class call_stack
{
public:
// Context class automatically pushes the key/value pair on to the stack.
class context
: private noncopyable
{
public:
// Push the key on to the stack.
explicit context(Key* k)
: key_(k),
next_(call_stack<Key, Value>::top_)
{
value_ = reinterpret_cast<unsigned char*>(this);
call_stack<Key, Value>::top_ = this;
}
// Push the key/value pair on to the stack.
context(Key* k, Value& v)
: key_(k),
value_(&v),
next_(call_stack<Key, Value>::top_)
{
call_stack<Key, Value>::top_ = this;
}
// Pop the key/value pair from the stack.
~context()
{
call_stack<Key, Value>::top_ = next_;
}
// Find the next context with the same key.
Value* next_by_key() const
{
context* elem = next_;
while (elem)
{
if (elem->key_ == key_)
return elem->value_;
elem = elem->next_;
}
return 0;
}
private:
friend class call_stack<Key, Value>;
// The key associated with the context.
Key* key_;
// The value associated with the context.
Value* value_;
// The next element in the stack.
context* next_;
};
friend class context;
// Determine whether the specified owner is on the stack. Returns address of
// key if present, 0 otherwise.
static Value* contains(Key* k)
{
context* elem = top_;
while (elem)
{
if (elem->key_ == k)
return elem->value_;
elem = elem->next_;
}
return 0;
}
// Obtain the value at the top of the stack.
static Value* top()
{
context* elem = top_;
return elem ? elem->value_ : 0;
}
private:
// The top of the stack of calls for the current thread.
static tss_ptr<context> top_;
};
template <typename Key, typename Value>
tss_ptr<typename call_stack<Key, Value>::context>
call_stack<Key, Value>::top_;
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_CALL_STACK_HPP

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//
// detail/chrono.hpp
// ~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_CHRONO_HPP
#define ASIO_DETAIL_CHRONO_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_HAS_STD_CHRONO)
# include <chrono>
#elif defined(ASIO_HAS_BOOST_CHRONO)
# include <boost/chrono/system_clocks.hpp>
#endif // defined(ASIO_HAS_BOOST_CHRONO)
namespace asio {
namespace chrono {
#if defined(ASIO_HAS_STD_CHRONO)
using std::chrono::duration;
using std::chrono::time_point;
using std::chrono::duration_cast;
using std::chrono::nanoseconds;
using std::chrono::microseconds;
using std::chrono::milliseconds;
using std::chrono::seconds;
using std::chrono::minutes;
using std::chrono::hours;
using std::chrono::time_point_cast;
#if defined(ASIO_HAS_STD_CHRONO_MONOTONIC_CLOCK)
typedef std::chrono::monotonic_clock steady_clock;
#else // defined(ASIO_HAS_STD_CHRONO_MONOTONIC_CLOCK)
using std::chrono::steady_clock;
#endif // defined(ASIO_HAS_STD_CHRONO_MONOTONIC_CLOCK)
using std::chrono::system_clock;
using std::chrono::high_resolution_clock;
#elif defined(ASIO_HAS_BOOST_CHRONO)
using boost::chrono::duration;
using boost::chrono::time_point;
using boost::chrono::duration_cast;
using boost::chrono::nanoseconds;
using boost::chrono::microseconds;
using boost::chrono::milliseconds;
using boost::chrono::seconds;
using boost::chrono::minutes;
using boost::chrono::hours;
using boost::chrono::time_point_cast;
using boost::chrono::system_clock;
using boost::chrono::steady_clock;
using boost::chrono::high_resolution_clock;
#endif // defined(ASIO_HAS_BOOST_CHRONO)
} // namespace chrono
} // namespace asio
#endif // ASIO_DETAIL_CHRONO_HPP

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//
// detail/chrono_time_traits.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_CHRONO_TIME_TRAITS_HPP
#define ASIO_DETAIL_CHRONO_TIME_TRAITS_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/cstdint.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
// Helper template to compute the greatest common divisor.
template <int64_t v1, int64_t v2>
struct gcd { enum { value = gcd<v2, v1 % v2>::value }; };
template <int64_t v1>
struct gcd<v1, 0> { enum { value = v1 }; };
// Adapts std::chrono clocks for use with a deadline timer.
template <typename Clock, typename WaitTraits>
struct chrono_time_traits
{
// The clock type.
typedef Clock clock_type;
// The duration type of the clock.
typedef typename clock_type::duration duration_type;
// The time point type of the clock.
typedef typename clock_type::time_point time_type;
// The period of the clock.
typedef typename duration_type::period period_type;
// Get the current time.
static time_type now()
{
return clock_type::now();
}
// Add a duration to a time.
static time_type add(const time_type& t, const duration_type& d)
{
const time_type epoch;
if (t >= epoch)
{
if ((time_type::max)() - t < d)
return (time_type::max)();
}
else // t < epoch
{
if (-(t - (time_type::min)()) > d)
return (time_type::min)();
}
return t + d;
}
// Subtract one time from another.
static duration_type subtract(const time_type& t1, const time_type& t2)
{
const time_type epoch;
if (t1 >= epoch)
{
if (t2 >= epoch)
{
return t1 - t2;
}
else if (t2 == (time_type::min)())
{
return (duration_type::max)();
}
else if ((time_type::max)() - t1 < epoch - t2)
{
return (duration_type::max)();
}
else
{
return t1 - t2;
}
}
else // t1 < epoch
{
if (t2 < epoch)
{
return t1 - t2;
}
else if (t1 == (time_type::min)())
{
return (duration_type::min)();
}
else if ((time_type::max)() - t2 < epoch - t1)
{
return (duration_type::min)();
}
else
{
return -(t2 - t1);
}
}
}
// Test whether one time is less than another.
static bool less_than(const time_type& t1, const time_type& t2)
{
return t1 < t2;
}
// Implement just enough of the posix_time::time_duration interface to supply
// what the timer_queue requires.
class posix_time_duration
{
public:
explicit posix_time_duration(const duration_type& d)
: d_(d)
{
}
int64_t ticks() const
{
return d_.count();
}
int64_t total_seconds() const
{
return duration_cast<1, 1>();
}
int64_t total_milliseconds() const
{
return duration_cast<1, 1000>();
}
int64_t total_microseconds() const
{
return duration_cast<1, 1000000>();
}
private:
template <int64_t Num, int64_t Den>
int64_t duration_cast() const
{
const int64_t num1 = period_type::num / gcd<period_type::num, Num>::value;
const int64_t num2 = Num / gcd<period_type::num, Num>::value;
const int64_t den1 = period_type::den / gcd<period_type::den, Den>::value;
const int64_t den2 = Den / gcd<period_type::den, Den>::value;
const int64_t num = num1 * den2;
const int64_t den = num2 * den1;
if (num == 1 && den == 1)
return ticks();
else if (num != 1 && den == 1)
return ticks() * num;
else if (num == 1 && period_type::den != 1)
return ticks() / den;
else
return ticks() * num / den;
}
duration_type d_;
};
// Convert to POSIX duration type.
static posix_time_duration to_posix_duration(const duration_type& d)
{
return posix_time_duration(WaitTraits::to_wait_duration(d));
}
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_CHRONO_TIME_TRAITS_HPP

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//
// detail/completion_handler.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_COMPLETION_HANDLER_HPP
#define ASIO_DETAIL_COMPLETION_HANDLER_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/detail/fenced_block.hpp"
#include "asio/detail/handler_alloc_helpers.hpp"
#include "asio/detail/handler_work.hpp"
#include "asio/detail/memory.hpp"
#include "asio/detail/operation.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
template <typename Handler>
class completion_handler : public operation
{
public:
ASIO_DEFINE_HANDLER_PTR(completion_handler);
completion_handler(Handler& h)
: operation(&completion_handler::do_complete),
handler_(ASIO_MOVE_CAST(Handler)(h))
{
handler_work<Handler>::start(handler_);
}
static void do_complete(void* owner, operation* base,
const asio::error_code& /*ec*/,
std::size_t /*bytes_transferred*/)
{
// Take ownership of the handler object.
completion_handler* h(static_cast<completion_handler*>(base));
ptr p = { asio::detail::addressof(h->handler_), h, h };
handler_work<Handler> w(h->handler_);
ASIO_HANDLER_COMPLETION((*h));
// Make a copy of the handler so that the memory can be deallocated before
// the upcall is made. Even if we're not about to make an upcall, a
// sub-object of the handler may be the true owner of the memory associated
// with the handler. Consequently, a local copy of the handler is required
// to ensure that any owning sub-object remains valid until after we have
// deallocated the memory here.
Handler handler(ASIO_MOVE_CAST(Handler)(h->handler_));
p.h = asio::detail::addressof(handler);
p.reset();
// Make the upcall if required.
if (owner)
{
fenced_block b(fenced_block::half);
ASIO_HANDLER_INVOCATION_BEGIN(());
w.complete(handler, handler);
ASIO_HANDLER_INVOCATION_END;
}
}
private:
Handler handler_;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_COMPLETION_HANDLER_HPP

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//
// detail/concurrency_hint.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_CONCURRENCY_HINT_HPP
#define ASIO_DETAIL_CONCURRENCY_HINT_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/detail/noncopyable.hpp"
// The concurrency hint ID and mask are used to identify when a "well-known"
// concurrency hint value has been passed to the io_context.
#define ASIO_CONCURRENCY_HINT_ID 0xA5100000u
#define ASIO_CONCURRENCY_HINT_ID_MASK 0xFFFF0000u
// If set, this bit indicates that the scheduler should perform locking.
#define ASIO_CONCURRENCY_HINT_LOCKING_SCHEDULER 0x1u
// If set, this bit indicates that the reactor should perform locking when
// managing descriptor registrations.
#define ASIO_CONCURRENCY_HINT_LOCKING_REACTOR_REGISTRATION 0x2u
// If set, this bit indicates that the reactor should perform locking for I/O.
#define ASIO_CONCURRENCY_HINT_LOCKING_REACTOR_IO 0x4u
// Helper macro to determine if we have a special concurrency hint.
#define ASIO_CONCURRENCY_HINT_IS_SPECIAL(hint) \
((static_cast<unsigned>(hint) \
& ASIO_CONCURRENCY_HINT_ID_MASK) \
== ASIO_CONCURRENCY_HINT_ID)
// Helper macro to determine if locking is enabled for a given facility.
#define ASIO_CONCURRENCY_HINT_IS_LOCKING(facility, hint) \
(((static_cast<unsigned>(hint) \
& (ASIO_CONCURRENCY_HINT_ID_MASK \
| ASIO_CONCURRENCY_HINT_LOCKING_ ## facility)) \
^ ASIO_CONCURRENCY_HINT_ID) != 0)
// This special concurrency hint disables locking in both the scheduler and
// reactor I/O. This hint has the following restrictions:
//
// - Care must be taken to ensure that all operations on the io_context and any
// of its associated I/O objects (such as sockets and timers) occur in only
// one thread at a time.
//
// - Asynchronous resolve operations fail with operation_not_supported.
//
// - If a signal_set is used with the io_context, signal_set objects cannot be
// used with any other io_context in the program.
#define ASIO_CONCURRENCY_HINT_UNSAFE \
static_cast<int>(ASIO_CONCURRENCY_HINT_ID)
// This special concurrency hint disables locking in the reactor I/O. This hint
// has the following restrictions:
//
// - Care must be taken to ensure that run functions on the io_context, and all
// operations on the io_context's associated I/O objects (such as sockets and
// timers), occur in only one thread at a time.
#define ASIO_CONCURRENCY_HINT_UNSAFE_IO \
static_cast<int>(ASIO_CONCURRENCY_HINT_ID \
| ASIO_CONCURRENCY_HINT_LOCKING_SCHEDULER \
| ASIO_CONCURRENCY_HINT_LOCKING_REACTOR_REGISTRATION)
// The special concurrency hint provides full thread safety.
#define ASIO_CONCURRENCY_HINT_SAFE \
static_cast<int>(ASIO_CONCURRENCY_HINT_ID \
| ASIO_CONCURRENCY_HINT_LOCKING_SCHEDULER \
| ASIO_CONCURRENCY_HINT_LOCKING_REACTOR_REGISTRATION \
| ASIO_CONCURRENCY_HINT_LOCKING_REACTOR_IO)
// This #define may be overridden at compile time to specify a program-wide
// default concurrency hint, used by the zero-argument io_context constructor.
#if !defined(ASIO_CONCURRENCY_HINT_DEFAULT)
# define ASIO_CONCURRENCY_HINT_DEFAULT -1
#endif // !defined(ASIO_CONCURRENCY_HINT_DEFAULT)
// This #define may be overridden at compile time to specify a program-wide
// concurrency hint, used by the one-argument io_context constructor when
// passed a value of 1.
#if !defined(ASIO_CONCURRENCY_HINT_1)
# define ASIO_CONCURRENCY_HINT_1 1
#endif // !defined(ASIO_CONCURRENCY_HINT_DEFAULT)
#endif // ASIO_DETAIL_CONCURRENCY_HINT_HPP

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//
// detail/conditionally_enabled_event.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_CONDITIONALLY_ENABLED_EVENT_HPP
#define ASIO_DETAIL_CONDITIONALLY_ENABLED_EVENT_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/detail/conditionally_enabled_mutex.hpp"
#include "asio/detail/event.hpp"
#include "asio/detail/noncopyable.hpp"
#include "asio/detail/null_event.hpp"
#include "asio/detail/scoped_lock.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
// Mutex adapter used to conditionally enable or disable locking.
class conditionally_enabled_event
: private noncopyable
{
public:
// Constructor.
conditionally_enabled_event()
{
}
// Destructor.
~conditionally_enabled_event()
{
}
// Signal the event. (Retained for backward compatibility.)
void signal(conditionally_enabled_mutex::scoped_lock& lock)
{
if (lock.mutex_.enabled_)
event_.signal(lock);
}
// Signal all waiters.
void signal_all(conditionally_enabled_mutex::scoped_lock& lock)
{
if (lock.mutex_.enabled_)
event_.signal_all(lock);
}
// Unlock the mutex and signal one waiter.
void unlock_and_signal_one(
conditionally_enabled_mutex::scoped_lock& lock)
{
if (lock.mutex_.enabled_)
event_.unlock_and_signal_one(lock);
}
// If there's a waiter, unlock the mutex and signal it.
bool maybe_unlock_and_signal_one(
conditionally_enabled_mutex::scoped_lock& lock)
{
if (lock.mutex_.enabled_)
return event_.maybe_unlock_and_signal_one(lock);
else
return false;
}
// Reset the event.
void clear(conditionally_enabled_mutex::scoped_lock& lock)
{
if (lock.mutex_.enabled_)
event_.clear(lock);
}
// Wait for the event to become signalled.
void wait(conditionally_enabled_mutex::scoped_lock& lock)
{
if (lock.mutex_.enabled_)
event_.wait(lock);
else
null_event().wait(lock);
}
// Timed wait for the event to become signalled.
bool wait_for_usec(
conditionally_enabled_mutex::scoped_lock& lock, long usec)
{
if (lock.mutex_.enabled_)
return event_.wait_for_usec(lock, usec);
else
return null_event().wait_for_usec(lock, usec);
}
private:
asio::detail::event event_;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_CONDITIONALLY_ENABLED_EVENT_HPP

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//
// detail/conditionally_enabled_mutex.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_CONDITIONALLY_ENABLED_MUTEX_HPP
#define ASIO_DETAIL_CONDITIONALLY_ENABLED_MUTEX_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/detail/mutex.hpp"
#include "asio/detail/noncopyable.hpp"
#include "asio/detail/scoped_lock.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
// Mutex adapter used to conditionally enable or disable locking.
class conditionally_enabled_mutex
: private noncopyable
{
public:
// Helper class to lock and unlock a mutex automatically.
class scoped_lock
: private noncopyable
{
public:
// Tag type used to distinguish constructors.
enum adopt_lock_t { adopt_lock };
// Constructor adopts a lock that is already held.
scoped_lock(conditionally_enabled_mutex& m, adopt_lock_t)
: mutex_(m),
locked_(m.enabled_)
{
}
// Constructor acquires the lock.
explicit scoped_lock(conditionally_enabled_mutex& m)
: mutex_(m)
{
if (m.enabled_)
{
mutex_.mutex_.lock();
locked_ = true;
}
else
locked_ = false;
}
// Destructor releases the lock.
~scoped_lock()
{
if (locked_)
mutex_.mutex_.unlock();
}
// Explicitly acquire the lock.
void lock()
{
if (mutex_.enabled_ && !locked_)
{
mutex_.mutex_.lock();
locked_ = true;
}
}
// Explicitly release the lock.
void unlock()
{
if (locked_)
{
mutex_.unlock();
locked_ = false;
}
}
// Test whether the lock is held.
bool locked() const
{
return locked_;
}
// Get the underlying mutex.
asio::detail::mutex& mutex()
{
return mutex_.mutex_;
}
private:
friend class conditionally_enabled_event;
conditionally_enabled_mutex& mutex_;
bool locked_;
};
// Constructor.
explicit conditionally_enabled_mutex(bool enabled)
: enabled_(enabled)
{
}
// Destructor.
~conditionally_enabled_mutex()
{
}
// Determine whether locking is enabled.
bool enabled() const
{
return enabled_;
}
// Lock the mutex.
void lock()
{
if (enabled_)
mutex_.lock();
}
// Unlock the mutex.
void unlock()
{
if (enabled_)
mutex_.unlock();
}
private:
friend class scoped_lock;
friend class conditionally_enabled_event;
asio::detail::mutex mutex_;
const bool enabled_;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_CONDITIONALLY_ENABLED_MUTEX_HPP

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//
// detail/consuming_buffers.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_CONSUMING_BUFFERS_HPP
#define ASIO_DETAIL_CONSUMING_BUFFERS_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <cstddef>
#include "asio/buffer.hpp"
#include "asio/detail/buffer_sequence_adapter.hpp"
#include "asio/detail/limits.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
// Helper template to determine the maximum number of prepared buffers.
template <typename Buffers>
struct prepared_buffers_max
{
enum { value = buffer_sequence_adapter_base::max_buffers };
};
template <typename Elem, std::size_t N>
struct prepared_buffers_max<boost::array<Elem, N> >
{
enum { value = N };
};
#if defined(ASIO_HAS_STD_ARRAY)
template <typename Elem, std::size_t N>
struct prepared_buffers_max<std::array<Elem, N> >
{
enum { value = N };
};
#endif // defined(ASIO_HAS_STD_ARRAY)
// A buffer sequence used to represent a subsequence of the buffers.
template <typename Buffer, std::size_t MaxBuffers>
struct prepared_buffers
{
typedef Buffer value_type;
typedef const Buffer* const_iterator;
enum { max_buffers = MaxBuffers < 16 ? MaxBuffers : 16 };
prepared_buffers() : count(0) {}
const_iterator begin() const { return elems; }
const_iterator end() const { return elems + count; }
Buffer elems[max_buffers];
std::size_t count;
};
// A proxy for a sub-range in a list of buffers.
template <typename Buffer, typename Buffers, typename Buffer_Iterator>
class consuming_buffers
{
public:
typedef prepared_buffers<Buffer, prepared_buffers_max<Buffers>::value>
prepared_buffers_type;
// Construct to represent the entire list of buffers.
explicit consuming_buffers(const Buffers& buffers)
: buffers_(buffers),
total_consumed_(0),
next_elem_(0),
next_elem_offset_(0)
{
using asio::buffer_size;
total_size_ = buffer_size(buffers);
}
// Determine if we are at the end of the buffers.
bool empty() const
{
return total_consumed_ >= total_size_;
}
// Get the buffer for a single transfer, with a size.
prepared_buffers_type prepare(std::size_t max_size)
{
prepared_buffers_type result;
Buffer_Iterator next = asio::buffer_sequence_begin(buffers_);
Buffer_Iterator end = asio::buffer_sequence_end(buffers_);
std::advance(next, next_elem_);
std::size_t elem_offset = next_elem_offset_;
while (next != end && max_size > 0 && (result.count) < result.max_buffers)
{
Buffer next_buf = Buffer(*next) + elem_offset;
result.elems[result.count] = asio::buffer(next_buf, max_size);
max_size -= result.elems[result.count].size();
elem_offset = 0;
if (result.elems[result.count].size() > 0)
++result.count;
++next;
}
return result;
}
// Consume the specified number of bytes from the buffers.
void consume(std::size_t size)
{
total_consumed_ += size;
Buffer_Iterator next = asio::buffer_sequence_begin(buffers_);
Buffer_Iterator end = asio::buffer_sequence_end(buffers_);
std::advance(next, next_elem_);
while (next != end && size > 0)
{
Buffer next_buf = Buffer(*next) + next_elem_offset_;
if (size < next_buf.size())
{
next_elem_offset_ += size;
size = 0;
}
else
{
size -= next_buf.size();
next_elem_offset_ = 0;
++next_elem_;
++next;
}
}
}
// Get the total number of bytes consumed from the buffers.
std::size_t total_consumed() const
{
return total_consumed_;
}
private:
Buffers buffers_;
std::size_t total_size_;
std::size_t total_consumed_;
std::size_t next_elem_;
std::size_t next_elem_offset_;
};
// Base class of all consuming_buffers specialisations for single buffers.
template <typename Buffer>
class consuming_single_buffer
{
public:
// Construct to represent the entire list of buffers.
template <typename Buffer1>
explicit consuming_single_buffer(const Buffer1& buffer)
: buffer_(buffer),
total_consumed_(0)
{
}
// Determine if we are at the end of the buffers.
bool empty() const
{
return total_consumed_ >= buffer_.size();
}
// Get the buffer for a single transfer, with a size.
Buffer prepare(std::size_t max_size)
{
return asio::buffer(buffer_ + total_consumed_, max_size);
}
// Consume the specified number of bytes from the buffers.
void consume(std::size_t size)
{
total_consumed_ += size;
}
// Get the total number of bytes consumed from the buffers.
std::size_t total_consumed() const
{
return total_consumed_;
}
private:
Buffer buffer_;
std::size_t total_consumed_;
};
template <>
class consuming_buffers<mutable_buffer, mutable_buffer, const mutable_buffer*>
: public consuming_single_buffer<ASIO_MUTABLE_BUFFER>
{
public:
explicit consuming_buffers(const mutable_buffer& buffer)
: consuming_single_buffer<ASIO_MUTABLE_BUFFER>(buffer)
{
}
};
template <>
class consuming_buffers<const_buffer, mutable_buffer, const mutable_buffer*>
: public consuming_single_buffer<ASIO_CONST_BUFFER>
{
public:
explicit consuming_buffers(const mutable_buffer& buffer)
: consuming_single_buffer<ASIO_CONST_BUFFER>(buffer)
{
}
};
template <>
class consuming_buffers<const_buffer, const_buffer, const const_buffer*>
: public consuming_single_buffer<ASIO_CONST_BUFFER>
{
public:
explicit consuming_buffers(const const_buffer& buffer)
: consuming_single_buffer<ASIO_CONST_BUFFER>(buffer)
{
}
};
#if !defined(ASIO_NO_DEPRECATED)
template <>
class consuming_buffers<mutable_buffer,
mutable_buffers_1, const mutable_buffer*>
: public consuming_single_buffer<ASIO_MUTABLE_BUFFER>
{
public:
explicit consuming_buffers(const mutable_buffers_1& buffer)
: consuming_single_buffer<ASIO_MUTABLE_BUFFER>(buffer)
{
}
};
template <>
class consuming_buffers<const_buffer, mutable_buffers_1, const mutable_buffer*>
: public consuming_single_buffer<ASIO_CONST_BUFFER>
{
public:
explicit consuming_buffers(const mutable_buffers_1& buffer)
: consuming_single_buffer<ASIO_CONST_BUFFER>(buffer)
{
}
};
template <>
class consuming_buffers<const_buffer, const_buffers_1, const const_buffer*>
: public consuming_single_buffer<ASIO_CONST_BUFFER>
{
public:
explicit consuming_buffers(const const_buffers_1& buffer)
: consuming_single_buffer<ASIO_CONST_BUFFER>(buffer)
{
}
};
#endif // !defined(ASIO_NO_DEPRECATED)
template <typename Buffer, typename Elem>
class consuming_buffers<Buffer, boost::array<Elem, 2>,
typename boost::array<Elem, 2>::const_iterator>
{
public:
// Construct to represent the entire list of buffers.
explicit consuming_buffers(const boost::array<Elem, 2>& buffers)
: buffers_(buffers),
total_consumed_(0)
{
}
// Determine if we are at the end of the buffers.
bool empty() const
{
return total_consumed_ >=
Buffer(buffers_[0]).size() + Buffer(buffers_[1]).size();
}
// Get the buffer for a single transfer, with a size.
boost::array<Buffer, 2> prepare(std::size_t max_size)
{
boost::array<Buffer, 2> result = {{
Buffer(buffers_[0]), Buffer(buffers_[1]) }};
std::size_t buffer0_size = result[0].size();
result[0] = asio::buffer(result[0] + total_consumed_, max_size);
result[1] = asio::buffer(
result[1] + (total_consumed_ < buffer0_size
? 0 : total_consumed_ - buffer0_size),
max_size - result[0].size());
return result;
}
// Consume the specified number of bytes from the buffers.
void consume(std::size_t size)
{
total_consumed_ += size;
}
// Get the total number of bytes consumed from the buffers.
std::size_t total_consumed() const
{
return total_consumed_;
}
private:
boost::array<Elem, 2> buffers_;
std::size_t total_consumed_;
};
#if defined(ASIO_HAS_STD_ARRAY)
template <typename Buffer, typename Elem>
class consuming_buffers<Buffer, std::array<Elem, 2>,
typename std::array<Elem, 2>::const_iterator>
{
public:
// Construct to represent the entire list of buffers.
explicit consuming_buffers(const std::array<Elem, 2>& buffers)
: buffers_(buffers),
total_consumed_(0)
{
}
// Determine if we are at the end of the buffers.
bool empty() const
{
return total_consumed_ >=
Buffer(buffers_[0]).size() + Buffer(buffers_[1]).size();
}
// Get the buffer for a single transfer, with a size.
std::array<Buffer, 2> prepare(std::size_t max_size)
{
std::array<Buffer, 2> result = {{
Buffer(buffers_[0]), Buffer(buffers_[1]) }};
std::size_t buffer0_size = result[0].size();
result[0] = asio::buffer(result[0] + total_consumed_, max_size);
result[1] = asio::buffer(
result[1] + (total_consumed_ < buffer0_size
? 0 : total_consumed_ - buffer0_size),
max_size - result[0].size());
return result;
}
// Consume the specified number of bytes from the buffers.
void consume(std::size_t size)
{
total_consumed_ += size;
}
// Get the total number of bytes consumed from the buffers.
std::size_t total_consumed() const
{
return total_consumed_;
}
private:
std::array<Elem, 2> buffers_;
std::size_t total_consumed_;
};
#endif // defined(ASIO_HAS_STD_ARRAY)
// Specialisation for null_buffers to ensure that the null_buffers type is
// always passed through to the underlying read or write operation.
template <typename Buffer>
class consuming_buffers<Buffer, null_buffers, const mutable_buffer*>
: public asio::null_buffers
{
public:
consuming_buffers(const null_buffers&)
{
// No-op.
}
bool empty()
{
return false;
}
null_buffers prepare(std::size_t)
{
return null_buffers();
}
void consume(std::size_t)
{
// No-op.
}
std::size_t total_consumed() const
{
return 0;
}
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_CONSUMING_BUFFERS_HPP

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//
// detail/cstddef.hpp
// ~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_CSTDDEF_HPP
#define ASIO_DETAIL_CSTDDEF_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <cstddef>
namespace asio {
#if defined(ASIO_HAS_NULLPTR)
using std::nullptr_t;
#else // defined(ASIO_HAS_NULLPTR)
struct nullptr_t {};
#endif // defined(ASIO_HAS_NULLPTR)
} // namespace asio
#endif // ASIO_DETAIL_CSTDDEF_HPP

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//
// detail/cstdint.hpp
// ~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_CSTDINT_HPP
#define ASIO_DETAIL_CSTDINT_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_HAS_CSTDINT)
# include <cstdint>
#else // defined(ASIO_HAS_CSTDINT)
# include <boost/cstdint.hpp>
#endif // defined(ASIO_HAS_CSTDINT)
namespace asio {
#if defined(ASIO_HAS_CSTDINT)
using std::int16_t;
using std::int_least16_t;
using std::uint16_t;
using std::uint_least16_t;
using std::int32_t;
using std::int_least32_t;
using std::uint32_t;
using std::uint_least32_t;
using std::int64_t;
using std::int_least64_t;
using std::uint64_t;
using std::uint_least64_t;
using std::uintmax_t;
#else // defined(ASIO_HAS_CSTDINT)
using boost::int16_t;
using boost::int_least16_t;
using boost::uint16_t;
using boost::uint_least16_t;
using boost::int32_t;
using boost::int_least32_t;
using boost::uint32_t;
using boost::uint_least32_t;
using boost::int64_t;
using boost::int_least64_t;
using boost::uint64_t;
using boost::uint_least64_t;
using boost::uintmax_t;
#endif // defined(ASIO_HAS_CSTDINT)
} // namespace asio
#endif // ASIO_DETAIL_CSTDINT_HPP

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//
// detail/date_time_fwd.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_DATE_TIME_FWD_HPP
#define ASIO_DETAIL_DATE_TIME_FWD_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
namespace boost {
namespace date_time {
template<class T, class TimeSystem>
class base_time;
} // namespace date_time
namespace posix_time {
class ptime;
} // namespace posix_time
} // namespace boost
#endif // ASIO_DETAIL_DATE_TIME_FWD_HPP

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//
// detail/deadline_timer_service.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_DEADLINE_TIMER_SERVICE_HPP
#define ASIO_DETAIL_DEADLINE_TIMER_SERVICE_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <cstddef>
#include "asio/error.hpp"
#include "asio/io_context.hpp"
#include "asio/detail/bind_handler.hpp"
#include "asio/detail/fenced_block.hpp"
#include "asio/detail/memory.hpp"
#include "asio/detail/noncopyable.hpp"
#include "asio/detail/socket_ops.hpp"
#include "asio/detail/socket_types.hpp"
#include "asio/detail/timer_queue.hpp"
#include "asio/detail/timer_queue_ptime.hpp"
#include "asio/detail/timer_scheduler.hpp"
#include "asio/detail/wait_handler.hpp"
#include "asio/detail/wait_op.hpp"
#if defined(ASIO_WINDOWS_RUNTIME)
# include <chrono>
# include <thread>
#endif // defined(ASIO_WINDOWS_RUNTIME)
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
template <typename Time_Traits>
class deadline_timer_service
: public service_base<deadline_timer_service<Time_Traits> >
{
public:
// The time type.
typedef typename Time_Traits::time_type time_type;
// The duration type.
typedef typename Time_Traits::duration_type duration_type;
// The implementation type of the timer. This type is dependent on the
// underlying implementation of the timer service.
struct implementation_type
: private asio::detail::noncopyable
{
time_type expiry;
bool might_have_pending_waits;
typename timer_queue<Time_Traits>::per_timer_data timer_data;
};
// Constructor.
deadline_timer_service(asio::io_context& io_context)
: service_base<deadline_timer_service<Time_Traits> >(io_context),
scheduler_(asio::use_service<timer_scheduler>(io_context))
{
scheduler_.init_task();
scheduler_.add_timer_queue(timer_queue_);
}
// Destructor.
~deadline_timer_service()
{
scheduler_.remove_timer_queue(timer_queue_);
}
// Destroy all user-defined handler objects owned by the service.
void shutdown()
{
}
// Construct a new timer implementation.
void construct(implementation_type& impl)
{
impl.expiry = time_type();
impl.might_have_pending_waits = false;
}
// Destroy a timer implementation.
void destroy(implementation_type& impl)
{
asio::error_code ec;
cancel(impl, ec);
}
// Move-construct a new serial port implementation.
void move_construct(implementation_type& impl,
implementation_type& other_impl)
{
scheduler_.move_timer(timer_queue_, impl.timer_data, other_impl.timer_data);
impl.expiry = other_impl.expiry;
other_impl.expiry = time_type();
impl.might_have_pending_waits = other_impl.might_have_pending_waits;
other_impl.might_have_pending_waits = false;
}
// Move-assign from another serial port implementation.
void move_assign(implementation_type& impl,
deadline_timer_service& other_service,
implementation_type& other_impl)
{
if (this != &other_service)
if (impl.might_have_pending_waits)
scheduler_.cancel_timer(timer_queue_, impl.timer_data);
other_service.scheduler_.move_timer(other_service.timer_queue_,
impl.timer_data, other_impl.timer_data);
impl.expiry = other_impl.expiry;
other_impl.expiry = time_type();
impl.might_have_pending_waits = other_impl.might_have_pending_waits;
other_impl.might_have_pending_waits = false;
}
// Cancel any asynchronous wait operations associated with the timer.
std::size_t cancel(implementation_type& impl, asio::error_code& ec)
{
if (!impl.might_have_pending_waits)
{
ec = asio::error_code();
return 0;
}
ASIO_HANDLER_OPERATION((scheduler_.context(),
"deadline_timer", &impl, 0, "cancel"));
std::size_t count = scheduler_.cancel_timer(timer_queue_, impl.timer_data);
impl.might_have_pending_waits = false;
ec = asio::error_code();
return count;
}
// Cancels one asynchronous wait operation associated with the timer.
std::size_t cancel_one(implementation_type& impl,
asio::error_code& ec)
{
if (!impl.might_have_pending_waits)
{
ec = asio::error_code();
return 0;
}
ASIO_HANDLER_OPERATION((scheduler_.context(),
"deadline_timer", &impl, 0, "cancel_one"));
std::size_t count = scheduler_.cancel_timer(
timer_queue_, impl.timer_data, 1);
if (count == 0)
impl.might_have_pending_waits = false;
ec = asio::error_code();
return count;
}
// Get the expiry time for the timer as an absolute time.
time_type expiry(const implementation_type& impl) const
{
return impl.expiry;
}
// Get the expiry time for the timer as an absolute time.
time_type expires_at(const implementation_type& impl) const
{
return impl.expiry;
}
// Get the expiry time for the timer relative to now.
duration_type expires_from_now(const implementation_type& impl) const
{
return Time_Traits::subtract(this->expiry(impl), Time_Traits::now());
}
// Set the expiry time for the timer as an absolute time.
std::size_t expires_at(implementation_type& impl,
const time_type& expiry_time, asio::error_code& ec)
{
std::size_t count = cancel(impl, ec);
impl.expiry = expiry_time;
ec = asio::error_code();
return count;
}
// Set the expiry time for the timer relative to now.
std::size_t expires_after(implementation_type& impl,
const duration_type& expiry_time, asio::error_code& ec)
{
return expires_at(impl,
Time_Traits::add(Time_Traits::now(), expiry_time), ec);
}
// Set the expiry time for the timer relative to now.
std::size_t expires_from_now(implementation_type& impl,
const duration_type& expiry_time, asio::error_code& ec)
{
return expires_at(impl,
Time_Traits::add(Time_Traits::now(), expiry_time), ec);
}
// Perform a blocking wait on the timer.
void wait(implementation_type& impl, asio::error_code& ec)
{
time_type now = Time_Traits::now();
ec = asio::error_code();
while (Time_Traits::less_than(now, impl.expiry) && !ec)
{
this->do_wait(Time_Traits::to_posix_duration(
Time_Traits::subtract(impl.expiry, now)), ec);
now = Time_Traits::now();
}
}
// Start an asynchronous wait on the timer.
template <typename Handler>
void async_wait(implementation_type& impl, Handler& handler)
{
// Allocate and construct an operation to wrap the handler.
typedef wait_handler<Handler> op;
typename op::ptr p = { asio::detail::addressof(handler),
op::ptr::allocate(handler), 0 };
p.p = new (p.v) op(handler);
impl.might_have_pending_waits = true;
ASIO_HANDLER_CREATION((scheduler_.context(),
*p.p, "deadline_timer", &impl, 0, "async_wait"));
scheduler_.schedule_timer(timer_queue_, impl.expiry, impl.timer_data, p.p);
p.v = p.p = 0;
}
private:
// Helper function to wait given a duration type. The duration type should
// either be of type boost::posix_time::time_duration, or implement the
// required subset of its interface.
template <typename Duration>
void do_wait(const Duration& timeout, asio::error_code& ec)
{
#if defined(ASIO_WINDOWS_RUNTIME)
std::this_thread::sleep_for(
std::chrono::seconds(timeout.total_seconds())
+ std::chrono::microseconds(timeout.total_microseconds()));
ec = asio::error_code();
#else // defined(ASIO_WINDOWS_RUNTIME)
::timeval tv;
tv.tv_sec = timeout.total_seconds();
tv.tv_usec = timeout.total_microseconds() % 1000000;
socket_ops::select(0, 0, 0, 0, &tv, ec);
#endif // defined(ASIO_WINDOWS_RUNTIME)
}
// The queue of timers.
timer_queue<Time_Traits> timer_queue_;
// The object that schedules and executes timers. Usually a reactor.
timer_scheduler& scheduler_;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_DEADLINE_TIMER_SERVICE_HPP

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//
// detail/dependent_type.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_DEPENDENT_TYPE_HPP
#define ASIO_DETAIL_DEPENDENT_TYPE_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
template <typename DependsOn, typename T>
struct dependent_type
{
typedef T type;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_DEPENDENT_TYPE_HPP

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//
// detail/descriptor_ops.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_DESCRIPTOR_OPS_HPP
#define ASIO_DETAIL_DESCRIPTOR_OPS_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if !defined(ASIO_WINDOWS) \
&& !defined(ASIO_WINDOWS_RUNTIME) \
&& !defined(__CYGWIN__)
#include <cstddef>
#include "asio/error.hpp"
#include "asio/error_code.hpp"
#include "asio/detail/socket_types.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
namespace descriptor_ops {
// Descriptor state bits.
enum
{
// The user wants a non-blocking descriptor.
user_set_non_blocking = 1,
// The descriptor has been set non-blocking.
internal_non_blocking = 2,
// Helper "state" used to determine whether the descriptor is non-blocking.
non_blocking = user_set_non_blocking | internal_non_blocking,
// The descriptor may have been dup()-ed.
possible_dup = 4
};
typedef unsigned char state_type;
template <typename ReturnType>
inline ReturnType error_wrapper(ReturnType return_value,
asio::error_code& ec)
{
ec = asio::error_code(errno,
asio::error::get_system_category());
return return_value;
}
ASIO_DECL int open(const char* path, int flags,
asio::error_code& ec);
ASIO_DECL int close(int d, state_type& state,
asio::error_code& ec);
ASIO_DECL bool set_user_non_blocking(int d,
state_type& state, bool value, asio::error_code& ec);
ASIO_DECL bool set_internal_non_blocking(int d,
state_type& state, bool value, asio::error_code& ec);
typedef iovec buf;
ASIO_DECL std::size_t sync_read(int d, state_type state, buf* bufs,
std::size_t count, bool all_empty, asio::error_code& ec);
ASIO_DECL bool non_blocking_read(int d, buf* bufs, std::size_t count,
asio::error_code& ec, std::size_t& bytes_transferred);
ASIO_DECL std::size_t sync_write(int d, state_type state,
const buf* bufs, std::size_t count, bool all_empty,
asio::error_code& ec);
ASIO_DECL bool non_blocking_write(int d,
const buf* bufs, std::size_t count,
asio::error_code& ec, std::size_t& bytes_transferred);
ASIO_DECL int ioctl(int d, state_type& state, long cmd,
ioctl_arg_type* arg, asio::error_code& ec);
ASIO_DECL int fcntl(int d, int cmd, asio::error_code& ec);
ASIO_DECL int fcntl(int d, int cmd,
long arg, asio::error_code& ec);
ASIO_DECL int poll_read(int d,
state_type state, asio::error_code& ec);
ASIO_DECL int poll_write(int d,
state_type state, asio::error_code& ec);
ASIO_DECL int poll_error(int d,
state_type state, asio::error_code& ec);
} // namespace descriptor_ops
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#if defined(ASIO_HEADER_ONLY)
# include "asio/detail/impl/descriptor_ops.ipp"
#endif // defined(ASIO_HEADER_ONLY)
#endif // !defined(ASIO_WINDOWS)
// && !defined(ASIO_WINDOWS_RUNTIME)
// && !defined(__CYGWIN__)
#endif // ASIO_DETAIL_DESCRIPTOR_OPS_HPP

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//
// detail/descriptor_read_op.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_DESCRIPTOR_READ_OP_HPP
#define ASIO_DETAIL_DESCRIPTOR_READ_OP_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
#include "asio/detail/bind_handler.hpp"
#include "asio/detail/buffer_sequence_adapter.hpp"
#include "asio/detail/descriptor_ops.hpp"
#include "asio/detail/fenced_block.hpp"
#include "asio/detail/handler_work.hpp"
#include "asio/detail/memory.hpp"
#include "asio/detail/reactor_op.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
template <typename MutableBufferSequence>
class descriptor_read_op_base : public reactor_op
{
public:
descriptor_read_op_base(int descriptor,
const MutableBufferSequence& buffers, func_type complete_func)
: reactor_op(&descriptor_read_op_base::do_perform, complete_func),
descriptor_(descriptor),
buffers_(buffers)
{
}
static status do_perform(reactor_op* base)
{
descriptor_read_op_base* o(static_cast<descriptor_read_op_base*>(base));
buffer_sequence_adapter<asio::mutable_buffer,
MutableBufferSequence> bufs(o->buffers_);
status result = descriptor_ops::non_blocking_read(o->descriptor_,
bufs.buffers(), bufs.count(), o->ec_, o->bytes_transferred_)
? done : not_done;
ASIO_HANDLER_REACTOR_OPERATION((*o, "non_blocking_read",
o->ec_, o->bytes_transferred_));
return result;
}
private:
int descriptor_;
MutableBufferSequence buffers_;
};
template <typename MutableBufferSequence, typename Handler>
class descriptor_read_op
: public descriptor_read_op_base<MutableBufferSequence>
{
public:
ASIO_DEFINE_HANDLER_PTR(descriptor_read_op);
descriptor_read_op(int descriptor,
const MutableBufferSequence& buffers, Handler& handler)
: descriptor_read_op_base<MutableBufferSequence>(
descriptor, buffers, &descriptor_read_op::do_complete),
handler_(ASIO_MOVE_CAST(Handler)(handler))
{
handler_work<Handler>::start(handler_);
}
static void do_complete(void* owner, operation* base,
const asio::error_code& /*ec*/,
std::size_t /*bytes_transferred*/)
{
// Take ownership of the handler object.
descriptor_read_op* o(static_cast<descriptor_read_op*>(base));
ptr p = { asio::detail::addressof(o->handler_), o, o };
handler_work<Handler> w(o->handler_);
ASIO_HANDLER_COMPLETION((*o));
// Make a copy of the handler so that the memory can be deallocated before
// the upcall is made. Even if we're not about to make an upcall, a
// sub-object of the handler may be the true owner of the memory associated
// with the handler. Consequently, a local copy of the handler is required
// to ensure that any owning sub-object remains valid until after we have
// deallocated the memory here.
detail::binder2<Handler, asio::error_code, std::size_t>
handler(o->handler_, o->ec_, o->bytes_transferred_);
p.h = asio::detail::addressof(handler.handler_);
p.reset();
// Make the upcall if required.
if (owner)
{
fenced_block b(fenced_block::half);
ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, handler.arg2_));
w.complete(handler, handler.handler_);
ASIO_HANDLER_INVOCATION_END;
}
}
private:
Handler handler_;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
#endif // ASIO_DETAIL_DESCRIPTOR_READ_OP_HPP

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//
// detail/descriptor_write_op.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_DESCRIPTOR_WRITE_OP_HPP
#define ASIO_DETAIL_DESCRIPTOR_WRITE_OP_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
#include "asio/detail/bind_handler.hpp"
#include "asio/detail/buffer_sequence_adapter.hpp"
#include "asio/detail/descriptor_ops.hpp"
#include "asio/detail/fenced_block.hpp"
#include "asio/detail/handler_work.hpp"
#include "asio/detail/memory.hpp"
#include "asio/detail/reactor_op.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
template <typename ConstBufferSequence>
class descriptor_write_op_base : public reactor_op
{
public:
descriptor_write_op_base(int descriptor,
const ConstBufferSequence& buffers, func_type complete_func)
: reactor_op(&descriptor_write_op_base::do_perform, complete_func),
descriptor_(descriptor),
buffers_(buffers)
{
}
static status do_perform(reactor_op* base)
{
descriptor_write_op_base* o(static_cast<descriptor_write_op_base*>(base));
buffer_sequence_adapter<asio::const_buffer,
ConstBufferSequence> bufs(o->buffers_);
status result = descriptor_ops::non_blocking_write(o->descriptor_,
bufs.buffers(), bufs.count(), o->ec_, o->bytes_transferred_)
? done : not_done;
ASIO_HANDLER_REACTOR_OPERATION((*o, "non_blocking_write",
o->ec_, o->bytes_transferred_));
return result;
}
private:
int descriptor_;
ConstBufferSequence buffers_;
};
template <typename ConstBufferSequence, typename Handler>
class descriptor_write_op
: public descriptor_write_op_base<ConstBufferSequence>
{
public:
ASIO_DEFINE_HANDLER_PTR(descriptor_write_op);
descriptor_write_op(int descriptor,
const ConstBufferSequence& buffers, Handler& handler)
: descriptor_write_op_base<ConstBufferSequence>(
descriptor, buffers, &descriptor_write_op::do_complete),
handler_(ASIO_MOVE_CAST(Handler)(handler))
{
handler_work<Handler>::start(handler_);
}
static void do_complete(void* owner, operation* base,
const asio::error_code& /*ec*/,
std::size_t /*bytes_transferred*/)
{
// Take ownership of the handler object.
descriptor_write_op* o(static_cast<descriptor_write_op*>(base));
ptr p = { asio::detail::addressof(o->handler_), o, o };
handler_work<Handler> w(o->handler_);
ASIO_HANDLER_COMPLETION((*o));
// Make a copy of the handler so that the memory can be deallocated before
// the upcall is made. Even if we're not about to make an upcall, a
// sub-object of the handler may be the true owner of the memory associated
// with the handler. Consequently, a local copy of the handler is required
// to ensure that any owning sub-object remains valid until after we have
// deallocated the memory here.
detail::binder2<Handler, asio::error_code, std::size_t>
handler(o->handler_, o->ec_, o->bytes_transferred_);
p.h = asio::detail::addressof(handler.handler_);
p.reset();
// Make the upcall if required.
if (owner)
{
fenced_block b(fenced_block::half);
ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, handler.arg2_));
w.complete(handler, handler.handler_);
ASIO_HANDLER_INVOCATION_END;
}
}
private:
Handler handler_;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
#endif // ASIO_DETAIL_DESCRIPTOR_WRITE_OP_HPP

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//
// detail/dev_poll_reactor.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_DEV_POLL_REACTOR_HPP
#define ASIO_DETAIL_DEV_POLL_REACTOR_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_HAS_DEV_POLL)
#include <cstddef>
#include <vector>
#include <sys/devpoll.h>
#include "asio/detail/hash_map.hpp"
#include "asio/detail/limits.hpp"
#include "asio/detail/mutex.hpp"
#include "asio/detail/op_queue.hpp"
#include "asio/detail/reactor_op.hpp"
#include "asio/detail/reactor_op_queue.hpp"
#include "asio/detail/select_interrupter.hpp"
#include "asio/detail/socket_types.hpp"
#include "asio/detail/timer_queue_base.hpp"
#include "asio/detail/timer_queue_set.hpp"
#include "asio/detail/wait_op.hpp"
#include "asio/execution_context.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
class dev_poll_reactor
: public execution_context_service_base<dev_poll_reactor>
{
public:
enum op_types { read_op = 0, write_op = 1,
connect_op = 1, except_op = 2, max_ops = 3 };
// Per-descriptor data.
struct per_descriptor_data
{
};
// Constructor.
ASIO_DECL dev_poll_reactor(asio::execution_context& ctx);
// Destructor.
ASIO_DECL ~dev_poll_reactor();
// Destroy all user-defined handler objects owned by the service.
ASIO_DECL void shutdown();
// Recreate internal descriptors following a fork.
ASIO_DECL void notify_fork(
asio::execution_context::fork_event fork_ev);
// Initialise the task.
ASIO_DECL void init_task();
// Register a socket with the reactor. Returns 0 on success, system error
// code on failure.
ASIO_DECL int register_descriptor(socket_type, per_descriptor_data&);
// Register a descriptor with an associated single operation. Returns 0 on
// success, system error code on failure.
ASIO_DECL int register_internal_descriptor(
int op_type, socket_type descriptor,
per_descriptor_data& descriptor_data, reactor_op* op);
// Move descriptor registration from one descriptor_data object to another.
ASIO_DECL void move_descriptor(socket_type descriptor,
per_descriptor_data& target_descriptor_data,
per_descriptor_data& source_descriptor_data);
// Post a reactor operation for immediate completion.
void post_immediate_completion(reactor_op* op, bool is_continuation)
{
scheduler_.post_immediate_completion(op, is_continuation);
}
// Start a new operation. The reactor operation will be performed when the
// given descriptor is flagged as ready, or an error has occurred.
ASIO_DECL void start_op(int op_type, socket_type descriptor,
per_descriptor_data&, reactor_op* op,
bool is_continuation, bool allow_speculative);
// Cancel all operations associated with the given descriptor. The
// handlers associated with the descriptor will be invoked with the
// operation_aborted error.
ASIO_DECL void cancel_ops(socket_type descriptor, per_descriptor_data&);
// Cancel any operations that are running against the descriptor and remove
// its registration from the reactor. The reactor resources associated with
// the descriptor must be released by calling cleanup_descriptor_data.
ASIO_DECL void deregister_descriptor(socket_type descriptor,
per_descriptor_data&, bool closing);
// Remove the descriptor's registration from the reactor. The reactor
// resources associated with the descriptor must be released by calling
// cleanup_descriptor_data.
ASIO_DECL void deregister_internal_descriptor(
socket_type descriptor, per_descriptor_data&);
// Perform any post-deregistration cleanup tasks associated with the
// descriptor data.
ASIO_DECL void cleanup_descriptor_data(per_descriptor_data&);
// Add a new timer queue to the reactor.
template <typename Time_Traits>
void add_timer_queue(timer_queue<Time_Traits>& queue);
// Remove a timer queue from the reactor.
template <typename Time_Traits>
void remove_timer_queue(timer_queue<Time_Traits>& queue);
// Schedule a new operation in the given timer queue to expire at the
// specified absolute time.
template <typename Time_Traits>
void schedule_timer(timer_queue<Time_Traits>& queue,
const typename Time_Traits::time_type& time,
typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op);
// Cancel the timer operations associated with the given token. Returns the
// number of operations that have been posted or dispatched.
template <typename Time_Traits>
std::size_t cancel_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& timer,
std::size_t max_cancelled = (std::numeric_limits<std::size_t>::max)());
// Move the timer operations associated with the given timer.
template <typename Time_Traits>
void move_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& target,
typename timer_queue<Time_Traits>::per_timer_data& source);
// Run /dev/poll once until interrupted or events are ready to be dispatched.
ASIO_DECL void run(long usec, op_queue<operation>& ops);
// Interrupt the select loop.
ASIO_DECL void interrupt();
private:
// Create the /dev/poll file descriptor. Throws an exception if the descriptor
// cannot be created.
ASIO_DECL static int do_dev_poll_create();
// Helper function to add a new timer queue.
ASIO_DECL void do_add_timer_queue(timer_queue_base& queue);
// Helper function to remove a timer queue.
ASIO_DECL void do_remove_timer_queue(timer_queue_base& queue);
// Get the timeout value for the /dev/poll DP_POLL operation. The timeout
// value is returned as a number of milliseconds. A return value of -1
// indicates that the poll should block indefinitely.
ASIO_DECL int get_timeout(int msec);
// Cancel all operations associated with the given descriptor. The do_cancel
// function of the handler objects will be invoked. This function does not
// acquire the dev_poll_reactor's mutex.
ASIO_DECL void cancel_ops_unlocked(socket_type descriptor,
const asio::error_code& ec);
// Add a pending event entry for the given descriptor.
ASIO_DECL ::pollfd& add_pending_event_change(int descriptor);
// The scheduler implementation used to post completions.
scheduler& scheduler_;
// Mutex to protect access to internal data.
asio::detail::mutex mutex_;
// The /dev/poll file descriptor.
int dev_poll_fd_;
// Vector of /dev/poll events waiting to be written to the descriptor.
std::vector< ::pollfd> pending_event_changes_;
// Hash map to associate a descriptor with a pending event change index.
hash_map<int, std::size_t> pending_event_change_index_;
// The interrupter is used to break a blocking DP_POLL operation.
select_interrupter interrupter_;
// The queues of read, write and except operations.
reactor_op_queue<socket_type> op_queue_[max_ops];
// The timer queues.
timer_queue_set timer_queues_;
// Whether the service has been shut down.
bool shutdown_;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#include "asio/detail/impl/dev_poll_reactor.hpp"
#if defined(ASIO_HEADER_ONLY)
# include "asio/detail/impl/dev_poll_reactor.ipp"
#endif // defined(ASIO_HEADER_ONLY)
#endif // defined(ASIO_HAS_DEV_POLL)
#endif // ASIO_DETAIL_DEV_POLL_REACTOR_HPP

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//
// detail/epoll_reactor.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_EPOLL_REACTOR_HPP
#define ASIO_DETAIL_EPOLL_REACTOR_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_HAS_EPOLL)
#include "asio/detail/atomic_count.hpp"
#include "asio/detail/conditionally_enabled_mutex.hpp"
#include "asio/detail/limits.hpp"
#include "asio/detail/object_pool.hpp"
#include "asio/detail/op_queue.hpp"
#include "asio/detail/reactor_op.hpp"
#include "asio/detail/select_interrupter.hpp"
#include "asio/detail/socket_types.hpp"
#include "asio/detail/timer_queue_base.hpp"
#include "asio/detail/timer_queue_set.hpp"
#include "asio/detail/wait_op.hpp"
#include "asio/execution_context.hpp"
#if defined(ASIO_HAS_TIMERFD)
# include <sys/timerfd.h>
#endif // defined(ASIO_HAS_TIMERFD)
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
class epoll_reactor
: public execution_context_service_base<epoll_reactor>
{
private:
// The mutex type used by this reactor.
typedef conditionally_enabled_mutex mutex;
public:
enum op_types { read_op = 0, write_op = 1,
connect_op = 1, except_op = 2, max_ops = 3 };
// Per-descriptor queues.
class descriptor_state : operation
{
friend class epoll_reactor;
friend class object_pool_access;
descriptor_state* next_;
descriptor_state* prev_;
mutex mutex_;
epoll_reactor* reactor_;
int descriptor_;
uint32_t registered_events_;
op_queue<reactor_op> op_queue_[max_ops];
bool try_speculative_[max_ops];
bool shutdown_;
ASIO_DECL descriptor_state(bool locking);
void set_ready_events(uint32_t events) { task_result_ = events; }
void add_ready_events(uint32_t events) { task_result_ |= events; }
ASIO_DECL operation* perform_io(uint32_t events);
ASIO_DECL static void do_complete(
void* owner, operation* base,
const asio::error_code& ec, std::size_t bytes_transferred);
};
// Per-descriptor data.
typedef descriptor_state* per_descriptor_data;
// Constructor.
ASIO_DECL epoll_reactor(asio::execution_context& ctx);
// Destructor.
ASIO_DECL ~epoll_reactor();
// Destroy all user-defined handler objects owned by the service.
ASIO_DECL void shutdown();
// Recreate internal descriptors following a fork.
ASIO_DECL void notify_fork(
asio::execution_context::fork_event fork_ev);
// Initialise the task.
ASIO_DECL void init_task();
// Register a socket with the reactor. Returns 0 on success, system error
// code on failure.
ASIO_DECL int register_descriptor(socket_type descriptor,
per_descriptor_data& descriptor_data);
// Register a descriptor with an associated single operation. Returns 0 on
// success, system error code on failure.
ASIO_DECL int register_internal_descriptor(
int op_type, socket_type descriptor,
per_descriptor_data& descriptor_data, reactor_op* op);
// Move descriptor registration from one descriptor_data object to another.
ASIO_DECL void move_descriptor(socket_type descriptor,
per_descriptor_data& target_descriptor_data,
per_descriptor_data& source_descriptor_data);
// Post a reactor operation for immediate completion.
void post_immediate_completion(reactor_op* op, bool is_continuation)
{
scheduler_.post_immediate_completion(op, is_continuation);
}
// Start a new operation. The reactor operation will be performed when the
// given descriptor is flagged as ready, or an error has occurred.
ASIO_DECL void start_op(int op_type, socket_type descriptor,
per_descriptor_data& descriptor_data, reactor_op* op,
bool is_continuation, bool allow_speculative);
// Cancel all operations associated with the given descriptor. The
// handlers associated with the descriptor will be invoked with the
// operation_aborted error.
ASIO_DECL void cancel_ops(socket_type descriptor,
per_descriptor_data& descriptor_data);
// Cancel any operations that are running against the descriptor and remove
// its registration from the reactor. The reactor resources associated with
// the descriptor must be released by calling cleanup_descriptor_data.
ASIO_DECL void deregister_descriptor(socket_type descriptor,
per_descriptor_data& descriptor_data, bool closing);
// Remove the descriptor's registration from the reactor. The reactor
// resources associated with the descriptor must be released by calling
// cleanup_descriptor_data.
ASIO_DECL void deregister_internal_descriptor(
socket_type descriptor, per_descriptor_data& descriptor_data);
// Perform any post-deregistration cleanup tasks associated with the
// descriptor data.
ASIO_DECL void cleanup_descriptor_data(
per_descriptor_data& descriptor_data);
// Add a new timer queue to the reactor.
template <typename Time_Traits>
void add_timer_queue(timer_queue<Time_Traits>& timer_queue);
// Remove a timer queue from the reactor.
template <typename Time_Traits>
void remove_timer_queue(timer_queue<Time_Traits>& timer_queue);
// Schedule a new operation in the given timer queue to expire at the
// specified absolute time.
template <typename Time_Traits>
void schedule_timer(timer_queue<Time_Traits>& queue,
const typename Time_Traits::time_type& time,
typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op);
// Cancel the timer operations associated with the given token. Returns the
// number of operations that have been posted or dispatched.
template <typename Time_Traits>
std::size_t cancel_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& timer,
std::size_t max_cancelled = (std::numeric_limits<std::size_t>::max)());
// Move the timer operations associated with the given timer.
template <typename Time_Traits>
void move_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& target,
typename timer_queue<Time_Traits>::per_timer_data& source);
// Run epoll once until interrupted or events are ready to be dispatched.
ASIO_DECL void run(long usec, op_queue<operation>& ops);
// Interrupt the select loop.
ASIO_DECL void interrupt();
private:
// The hint to pass to epoll_create to size its data structures.
enum { epoll_size = 20000 };
// Create the epoll file descriptor. Throws an exception if the descriptor
// cannot be created.
ASIO_DECL static int do_epoll_create();
// Create the timerfd file descriptor. Does not throw.
ASIO_DECL static int do_timerfd_create();
// Allocate a new descriptor state object.
ASIO_DECL descriptor_state* allocate_descriptor_state();
// Free an existing descriptor state object.
ASIO_DECL void free_descriptor_state(descriptor_state* s);
// Helper function to add a new timer queue.
ASIO_DECL void do_add_timer_queue(timer_queue_base& queue);
// Helper function to remove a timer queue.
ASIO_DECL void do_remove_timer_queue(timer_queue_base& queue);
// Called to recalculate and update the timeout.
ASIO_DECL void update_timeout();
// Get the timeout value for the epoll_wait call. The timeout value is
// returned as a number of milliseconds. A return value of -1 indicates
// that epoll_wait should block indefinitely.
ASIO_DECL int get_timeout(int msec);
#if defined(ASIO_HAS_TIMERFD)
// Get the timeout value for the timer descriptor. The return value is the
// flag argument to be used when calling timerfd_settime.
ASIO_DECL int get_timeout(itimerspec& ts);
#endif // defined(ASIO_HAS_TIMERFD)
// The scheduler implementation used to post completions.
scheduler& scheduler_;
// Mutex to protect access to internal data.
mutex mutex_;
// The interrupter is used to break a blocking epoll_wait call.
select_interrupter interrupter_;
// The epoll file descriptor.
int epoll_fd_;
// The timer file descriptor.
int timer_fd_;
// The timer queues.
timer_queue_set timer_queues_;
// Whether the service has been shut down.
bool shutdown_;
// Mutex to protect access to the registered descriptors.
mutex registered_descriptors_mutex_;
// Keep track of all registered descriptors.
object_pool<descriptor_state> registered_descriptors_;
// Helper class to do post-perform_io cleanup.
struct perform_io_cleanup_on_block_exit;
friend struct perform_io_cleanup_on_block_exit;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#include "asio/detail/impl/epoll_reactor.hpp"
#if defined(ASIO_HEADER_ONLY)
# include "asio/detail/impl/epoll_reactor.ipp"
#endif // defined(ASIO_HEADER_ONLY)
#endif // defined(ASIO_HAS_EPOLL)
#endif // ASIO_DETAIL_EPOLL_REACTOR_HPP

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//
// detail/event.hpp
// ~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_EVENT_HPP
#define ASIO_DETAIL_EVENT_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if !defined(ASIO_HAS_THREADS)
# include "asio/detail/null_event.hpp"
#elif defined(ASIO_WINDOWS)
# include "asio/detail/win_event.hpp"
#elif defined(ASIO_HAS_PTHREADS)
# include "asio/detail/posix_event.hpp"
#elif defined(ASIO_HAS_STD_MUTEX_AND_CONDVAR)
# include "asio/detail/std_event.hpp"
#else
# error Only Windows, POSIX and std::condition_variable are supported!
#endif
namespace asio {
namespace detail {
#if !defined(ASIO_HAS_THREADS)
typedef null_event event;
#elif defined(ASIO_WINDOWS)
typedef win_event event;
#elif defined(ASIO_HAS_PTHREADS)
typedef posix_event event;
#elif defined(ASIO_HAS_STD_MUTEX_AND_CONDVAR)
typedef std_event event;
#endif
} // namespace detail
} // namespace asio
#endif // ASIO_DETAIL_EVENT_HPP

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//
// detail/eventfd_select_interrupter.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
// Copyright (c) 2008 Roelof Naude (roelof.naude at gmail dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_EVENTFD_SELECT_INTERRUPTER_HPP
#define ASIO_DETAIL_EVENTFD_SELECT_INTERRUPTER_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_HAS_EVENTFD)
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
class eventfd_select_interrupter
{
public:
// Constructor.
ASIO_DECL eventfd_select_interrupter();
// Destructor.
ASIO_DECL ~eventfd_select_interrupter();
// Recreate the interrupter's descriptors. Used after a fork.
ASIO_DECL void recreate();
// Interrupt the select call.
ASIO_DECL void interrupt();
// Reset the select interrupt. Returns true if the call was interrupted.
ASIO_DECL bool reset();
// Get the read descriptor to be passed to select.
int read_descriptor() const
{
return read_descriptor_;
}
private:
// Open the descriptors. Throws on error.
ASIO_DECL void open_descriptors();
// Close the descriptors.
ASIO_DECL void close_descriptors();
// The read end of a connection used to interrupt the select call. This file
// descriptor is passed to select such that when it is time to stop, a single
// 64bit value will be written on the other end of the connection and this
// descriptor will become readable.
int read_descriptor_;
// The write end of a connection used to interrupt the select call. A single
// 64bit non-zero value may be written to this to wake up the select which is
// waiting for the other end to become readable. This descriptor will only
// differ from the read descriptor when a pipe is used.
int write_descriptor_;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#if defined(ASIO_HEADER_ONLY)
# include "asio/detail/impl/eventfd_select_interrupter.ipp"
#endif // defined(ASIO_HEADER_ONLY)
#endif // defined(ASIO_HAS_EVENTFD)
#endif // ASIO_DETAIL_EVENTFD_SELECT_INTERRUPTER_HPP

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//
// detail/executor_op.hpp
// ~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_EXECUTOR_OP_HPP
#define ASIO_DETAIL_EXECUTOR_OP_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/detail/fenced_block.hpp"
#include "asio/detail/handler_alloc_helpers.hpp"
#include "asio/detail/handler_invoke_helpers.hpp"
#include "asio/detail/scheduler_operation.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
template <typename Handler, typename Alloc,
typename Operation = scheduler_operation>
class executor_op : public Operation
{
public:
ASIO_DEFINE_HANDLER_ALLOCATOR_PTR(executor_op);
template <typename H>
executor_op(ASIO_MOVE_ARG(H) h, const Alloc& allocator)
: Operation(&executor_op::do_complete),
handler_(ASIO_MOVE_CAST(H)(h)),
allocator_(allocator)
{
}
static void do_complete(void* owner, Operation* base,
const asio::error_code& /*ec*/,
std::size_t /*bytes_transferred*/)
{
// Take ownership of the handler object.
executor_op* o(static_cast<executor_op*>(base));
Alloc allocator(o->allocator_);
ptr p = { detail::addressof(allocator), o, o };
ASIO_HANDLER_COMPLETION((*o));
// Make a copy of the handler so that the memory can be deallocated before
// the upcall is made. Even if we're not about to make an upcall, a
// sub-object of the handler may be the true owner of the memory associated
// with the handler. Consequently, a local copy of the handler is required
// to ensure that any owning sub-object remains valid until after we have
// deallocated the memory here.
Handler handler(ASIO_MOVE_CAST(Handler)(o->handler_));
p.reset();
// Make the upcall if required.
if (owner)
{
fenced_block b(fenced_block::half);
ASIO_HANDLER_INVOCATION_BEGIN(());
asio_handler_invoke_helpers::invoke(handler, handler);
ASIO_HANDLER_INVOCATION_END;
}
}
private:
Handler handler_;
Alloc allocator_;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_EXECUTOR_OP_HPP

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//
// detail/fd_set_adapter.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_FD_SET_ADAPTER_HPP
#define ASIO_DETAIL_FD_SET_ADAPTER_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if !defined(ASIO_WINDOWS_RUNTIME)
#include "asio/detail/posix_fd_set_adapter.hpp"
#include "asio/detail/win_fd_set_adapter.hpp"
namespace asio {
namespace detail {
#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
typedef win_fd_set_adapter fd_set_adapter;
#else
typedef posix_fd_set_adapter fd_set_adapter;
#endif
} // namespace detail
} // namespace asio
#endif // !defined(ASIO_WINDOWS_RUNTIME)
#endif // ASIO_DETAIL_FD_SET_ADAPTER_HPP

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//
// detail/fenced_block.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_FENCED_BLOCK_HPP
#define ASIO_DETAIL_FENCED_BLOCK_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if !defined(ASIO_HAS_THREADS) \
|| defined(ASIO_DISABLE_FENCED_BLOCK)
# include "asio/detail/null_fenced_block.hpp"
#elif defined(ASIO_HAS_STD_ATOMIC)
# include "asio/detail/std_fenced_block.hpp"
#elif defined(__MACH__) && defined(__APPLE__)
# include "asio/detail/macos_fenced_block.hpp"
#elif defined(__sun)
# include "asio/detail/solaris_fenced_block.hpp"
#elif defined(__GNUC__) && defined(__arm__) \
&& !defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
# include "asio/detail/gcc_arm_fenced_block.hpp"
#elif defined(__GNUC__) && (defined(__hppa) || defined(__hppa__))
# include "asio/detail/gcc_hppa_fenced_block.hpp"
#elif defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
# include "asio/detail/gcc_x86_fenced_block.hpp"
#elif defined(__GNUC__) \
&& ((__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4)) \
&& !defined(__INTEL_COMPILER) && !defined(__ICL) \
&& !defined(__ICC) && !defined(__ECC) && !defined(__PATHSCALE__)
# include "asio/detail/gcc_sync_fenced_block.hpp"
#elif defined(ASIO_WINDOWS) && !defined(UNDER_CE)
# include "asio/detail/win_fenced_block.hpp"
#else
# include "asio/detail/null_fenced_block.hpp"
#endif
namespace asio {
namespace detail {
#if !defined(ASIO_HAS_THREADS) \
|| defined(ASIO_DISABLE_FENCED_BLOCK)
typedef null_fenced_block fenced_block;
#elif defined(ASIO_HAS_STD_ATOMIC)
typedef std_fenced_block fenced_block;
#elif defined(__MACH__) && defined(__APPLE__)
typedef macos_fenced_block fenced_block;
#elif defined(__sun)
typedef solaris_fenced_block fenced_block;
#elif defined(__GNUC__) && defined(__arm__) \
&& !defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
typedef gcc_arm_fenced_block fenced_block;
#elif defined(__GNUC__) && (defined(__hppa) || defined(__hppa__))
typedef gcc_hppa_fenced_block fenced_block;
#elif defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
typedef gcc_x86_fenced_block fenced_block;
#elif defined(__GNUC__) \
&& ((__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4)) \
&& !defined(__INTEL_COMPILER) && !defined(__ICL) \
&& !defined(__ICC) && !defined(__ECC) && !defined(__PATHSCALE__)
typedef gcc_sync_fenced_block fenced_block;
#elif defined(ASIO_WINDOWS) && !defined(UNDER_CE)
typedef win_fenced_block fenced_block;
#else
typedef null_fenced_block fenced_block;
#endif
} // namespace detail
} // namespace asio
#endif // ASIO_DETAIL_FENCED_BLOCK_HPP

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//
// detail/functional.hpp
// ~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_FUNCTIONAL_HPP
#define ASIO_DETAIL_FUNCTIONAL_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <functional>
#if !defined(ASIO_HAS_STD_FUNCTION)
# include <boost/function.hpp>
#endif // !defined(ASIO_HAS_STD_FUNCTION)
namespace asio {
namespace detail {
#if defined(ASIO_HAS_STD_FUNCTION)
using std::function;
#else // defined(ASIO_HAS_STD_FUNCTION)
using boost::function;
#endif // defined(ASIO_HAS_STD_FUNCTION)
} // namespace detail
} // namespace asio
#endif // ASIO_DETAIL_FUNCTIONAL_HPP

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//
// detail/gcc_arm_fenced_block.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_GCC_ARM_FENCED_BLOCK_HPP
#define ASIO_DETAIL_GCC_ARM_FENCED_BLOCK_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(__GNUC__) && defined(__arm__)
#include "asio/detail/noncopyable.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
class gcc_arm_fenced_block
: private noncopyable
{
public:
enum half_t { half };
enum full_t { full };
// Constructor for a half fenced block.
explicit gcc_arm_fenced_block(half_t)
{
}
// Constructor for a full fenced block.
explicit gcc_arm_fenced_block(full_t)
{
barrier();
}
// Destructor.
~gcc_arm_fenced_block()
{
barrier();
}
private:
static void barrier()
{
#if defined(__ARM_ARCH_4__) \
|| defined(__ARM_ARCH_4T__) \
|| defined(__ARM_ARCH_5__) \
|| defined(__ARM_ARCH_5E__) \
|| defined(__ARM_ARCH_5T__) \
|| defined(__ARM_ARCH_5TE__) \
|| defined(__ARM_ARCH_5TEJ__) \
|| defined(__ARM_ARCH_6__) \
|| defined(__ARM_ARCH_6J__) \
|| defined(__ARM_ARCH_6K__) \
|| defined(__ARM_ARCH_6Z__) \
|| defined(__ARM_ARCH_6ZK__) \
|| defined(__ARM_ARCH_6T2__)
# if defined(__thumb__)
// This is just a placeholder and almost certainly not sufficient.
__asm__ __volatile__ ("" : : : "memory");
# else // defined(__thumb__)
int a = 0, b = 0;
__asm__ __volatile__ ("swp %0, %1, [%2]"
: "=&r"(a) : "r"(1), "r"(&b) : "memory", "cc");
# endif // defined(__thumb__)
#else
// ARMv7 and later.
__asm__ __volatile__ ("dmb" : : : "memory");
#endif
}
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(__GNUC__) && defined(__arm__)
#endif // ASIO_DETAIL_GCC_ARM_FENCED_BLOCK_HPP

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//
// detail/gcc_hppa_fenced_block.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_GCC_HPPA_FENCED_BLOCK_HPP
#define ASIO_DETAIL_GCC_HPPA_FENCED_BLOCK_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(__GNUC__) && (defined(__hppa) || defined(__hppa__))
#include "asio/detail/noncopyable.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
class gcc_hppa_fenced_block
: private noncopyable
{
public:
enum half_t { half };
enum full_t { full };
// Constructor for a half fenced block.
explicit gcc_hppa_fenced_block(half_t)
{
}
// Constructor for a full fenced block.
explicit gcc_hppa_fenced_block(full_t)
{
barrier();
}
// Destructor.
~gcc_hppa_fenced_block()
{
barrier();
}
private:
static void barrier()
{
// This is just a placeholder and almost certainly not sufficient.
__asm__ __volatile__ ("" : : : "memory");
}
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(__GNUC__) && (defined(__hppa) || defined(__hppa__))
#endif // ASIO_DETAIL_GCC_HPPA_FENCED_BLOCK_HPP

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//
// detail/gcc_sync_fenced_block.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_GCC_SYNC_FENCED_BLOCK_HPP
#define ASIO_DETAIL_GCC_SYNC_FENCED_BLOCK_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(__GNUC__) \
&& ((__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4)) \
&& !defined(__INTEL_COMPILER) && !defined(__ICL) \
&& !defined(__ICC) && !defined(__ECC) && !defined(__PATHSCALE__)
#include "asio/detail/noncopyable.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
class gcc_sync_fenced_block
: private noncopyable
{
public:
enum half_or_full_t { half, full };
// Constructor.
explicit gcc_sync_fenced_block(half_or_full_t)
: value_(0)
{
__sync_lock_test_and_set(&value_, 1);
}
// Destructor.
~gcc_sync_fenced_block()
{
__sync_lock_release(&value_);
}
private:
int value_;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(__GNUC__)
// && ((__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4))
// && !defined(__INTEL_COMPILER) && !defined(__ICL)
// && !defined(__ICC) && !defined(__ECC) && !defined(__PATHSCALE__)
#endif // ASIO_DETAIL_GCC_SYNC_FENCED_BLOCK_HPP

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//
// detail/gcc_x86_fenced_block.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_GCC_X86_FENCED_BLOCK_HPP
#define ASIO_DETAIL_GCC_X86_FENCED_BLOCK_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
#include "asio/detail/noncopyable.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
class gcc_x86_fenced_block
: private noncopyable
{
public:
enum half_t { half };
enum full_t { full };
// Constructor for a half fenced block.
explicit gcc_x86_fenced_block(half_t)
{
}
// Constructor for a full fenced block.
explicit gcc_x86_fenced_block(full_t)
{
lbarrier();
}
// Destructor.
~gcc_x86_fenced_block()
{
sbarrier();
}
private:
static int barrier()
{
int r = 0, m = 1;
__asm__ __volatile__ (
"xchgl %0, %1" :
"=r"(r), "=m"(m) :
"0"(1), "m"(m) :
"memory", "cc");
return r;
}
static void lbarrier()
{
#if defined(__SSE2__)
# if (__GNUC__ >= 4) && !defined(__INTEL_COMPILER) && !defined(__ICL)
__builtin_ia32_lfence();
# else // (__GNUC__ >= 4) && !defined(__INTEL_COMPILER) && !defined(__ICL)
__asm__ __volatile__ ("lfence" ::: "memory");
# endif // (__GNUC__ >= 4) && !defined(__INTEL_COMPILER) && !defined(__ICL)
#else // defined(__SSE2__)
barrier();
#endif // defined(__SSE2__)
}
static void sbarrier()
{
#if defined(__SSE2__)
# if (__GNUC__ >= 4) && !defined(__INTEL_COMPILER) && !defined(__ICL)
__builtin_ia32_sfence();
# else // (__GNUC__ >= 4) && !defined(__INTEL_COMPILER) && !defined(__ICL)
__asm__ __volatile__ ("sfence" ::: "memory");
# endif // (__GNUC__ >= 4) && !defined(__INTEL_COMPILER) && !defined(__ICL)
#else // defined(__SSE2__)
barrier();
#endif // defined(__SSE2__)
}
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
#endif // ASIO_DETAIL_GCC_X86_FENCED_BLOCK_HPP

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//
// detail/global.hpp
// ~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_GLOBAL_HPP
#define ASIO_DETAIL_GLOBAL_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if !defined(ASIO_HAS_THREADS)
# include "asio/detail/null_global.hpp"
#elif defined(ASIO_WINDOWS)
# include "asio/detail/win_global.hpp"
#elif defined(ASIO_HAS_PTHREADS)
# include "asio/detail/posix_global.hpp"
#elif defined(ASIO_HAS_STD_CALL_ONCE)
# include "asio/detail/std_global.hpp"
#else
# error Only Windows, POSIX and std::call_once are supported!
#endif
namespace asio {
namespace detail {
template <typename T>
inline T& global()
{
#if !defined(ASIO_HAS_THREADS)
return null_global<T>();
#elif defined(ASIO_WINDOWS)
return win_global<T>();
#elif defined(ASIO_HAS_PTHREADS)
return posix_global<T>();
#elif defined(ASIO_HAS_STD_CALL_ONCE)
return std_global<T>();
#endif
}
} // namespace detail
} // namespace asio
#endif // ASIO_DETAIL_GLOBAL_HPP

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//
// detail/handler_alloc_helpers.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_HANDLER_ALLOC_HELPERS_HPP
#define ASIO_DETAIL_HANDLER_ALLOC_HELPERS_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/detail/memory.hpp"
#include "asio/detail/noncopyable.hpp"
#include "asio/detail/recycling_allocator.hpp"
#include "asio/associated_allocator.hpp"
#include "asio/handler_alloc_hook.hpp"
#include "asio/detail/push_options.hpp"
// Calls to asio_handler_allocate and asio_handler_deallocate must be made from
// a namespace that does not contain any overloads of these functions. The
// asio_handler_alloc_helpers namespace is defined here for that purpose.
namespace asio_handler_alloc_helpers {
template <typename Handler>
inline void* allocate(std::size_t s, Handler& h)
{
#if !defined(ASIO_HAS_HANDLER_HOOKS)
return ::operator new(s);
#else
using asio::asio_handler_allocate;
return asio_handler_allocate(s, asio::detail::addressof(h));
#endif
}
template <typename Handler>
inline void deallocate(void* p, std::size_t s, Handler& h)
{
#if !defined(ASIO_HAS_HANDLER_HOOKS)
::operator delete(p);
#else
using asio::asio_handler_deallocate;
asio_handler_deallocate(p, s, asio::detail::addressof(h));
#endif
}
} // namespace asio_handler_alloc_helpers
namespace asio {
namespace detail {
template <typename Handler, typename T>
class hook_allocator
{
public:
typedef T value_type;
template <typename U>
struct rebind
{
typedef hook_allocator<Handler, U> other;
};
explicit hook_allocator(Handler& h)
: handler_(h)
{
}
template <typename U>
hook_allocator(const hook_allocator<Handler, U>& a)
: handler_(a.handler_)
{
}
T* allocate(std::size_t n)
{
return static_cast<T*>(
asio_handler_alloc_helpers::allocate(sizeof(T) * n, handler_));
}
void deallocate(T* p, std::size_t n)
{
asio_handler_alloc_helpers::deallocate(p, sizeof(T) * n, handler_);
}
//private:
Handler& handler_;
};
template <typename Handler>
class hook_allocator<Handler, void>
{
public:
typedef void value_type;
template <typename U>
struct rebind
{
typedef hook_allocator<Handler, U> other;
};
explicit hook_allocator(Handler& h)
: handler_(h)
{
}
template <typename U>
hook_allocator(const hook_allocator<Handler, U>& a)
: handler_(a.handler_)
{
}
//private:
Handler& handler_;
};
template <typename Handler, typename Allocator>
struct get_hook_allocator
{
typedef Allocator type;
static type get(Handler&, const Allocator& a)
{
return a;
}
};
template <typename Handler, typename T>
struct get_hook_allocator<Handler, std::allocator<T> >
{
typedef hook_allocator<Handler, T> type;
static type get(Handler& handler, const std::allocator<T>&)
{
return type(handler);
}
};
} // namespace detail
} // namespace asio
#define ASIO_DEFINE_HANDLER_PTR(op) \
struct ptr \
{ \
Handler* h; \
op* v; \
op* p; \
~ptr() \
{ \
reset(); \
} \
static op* allocate(Handler& handler) \
{ \
typedef typename ::asio::associated_allocator< \
Handler>::type associated_allocator_type; \
typedef typename ::asio::detail::get_hook_allocator< \
Handler, associated_allocator_type>::type hook_allocator_type; \
ASIO_REBIND_ALLOC(hook_allocator_type, op) a( \
::asio::detail::get_hook_allocator< \
Handler, associated_allocator_type>::get( \
handler, ::asio::get_associated_allocator(handler))); \
return a.allocate(1); \
} \
void reset() \
{ \
if (p) \
{ \
p->~op(); \
p = 0; \
} \
if (v) \
{ \
typedef typename ::asio::associated_allocator< \
Handler>::type associated_allocator_type; \
typedef typename ::asio::detail::get_hook_allocator< \
Handler, associated_allocator_type>::type hook_allocator_type; \
ASIO_REBIND_ALLOC(hook_allocator_type, op) a( \
::asio::detail::get_hook_allocator< \
Handler, associated_allocator_type>::get( \
*h, ::asio::get_associated_allocator(*h))); \
a.deallocate(static_cast<op*>(v), 1); \
v = 0; \
} \
} \
} \
/**/
#define ASIO_DEFINE_HANDLER_ALLOCATOR_PTR(op) \
struct ptr \
{ \
const Alloc* a; \
void* v; \
op* p; \
~ptr() \
{ \
reset(); \
} \
static op* allocate(const Alloc& a) \
{ \
typedef typename ::asio::detail::get_recycling_allocator< \
Alloc>::type recycling_allocator_type; \
ASIO_REBIND_ALLOC(recycling_allocator_type, op) a1( \
::asio::detail::get_recycling_allocator<Alloc>::get(a)); \
return a1.allocate(1); \
} \
void reset() \
{ \
if (p) \
{ \
p->~op(); \
p = 0; \
} \
if (v) \
{ \
typedef typename ::asio::detail::get_recycling_allocator< \
Alloc>::type recycling_allocator_type; \
ASIO_REBIND_ALLOC(recycling_allocator_type, op) a1( \
::asio::detail::get_recycling_allocator<Alloc>::get(*a)); \
a1.deallocate(static_cast<op*>(v), 1); \
v = 0; \
} \
} \
} \
/**/
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_HANDLER_ALLOC_HELPERS_HPP

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//
// detail/handler_cont_helpers.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_HANDLER_CONT_HELPERS_HPP
#define ASIO_DETAIL_HANDLER_CONT_HELPERS_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/detail/memory.hpp"
#include "asio/handler_continuation_hook.hpp"
#include "asio/detail/push_options.hpp"
// Calls to asio_handler_is_continuation must be made from a namespace that
// does not contain overloads of this function. This namespace is defined here
// for that purpose.
namespace asio_handler_cont_helpers {
template <typename Context>
inline bool is_continuation(Context& context)
{
#if !defined(ASIO_HAS_HANDLER_HOOKS)
return false;
#else
using asio::asio_handler_is_continuation;
return asio_handler_is_continuation(
asio::detail::addressof(context));
#endif
}
} // namespace asio_handler_cont_helpers
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_HANDLER_CONT_HELPERS_HPP

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//
// detail/handler_invoke_helpers.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_HANDLER_INVOKE_HELPERS_HPP
#define ASIO_DETAIL_HANDLER_INVOKE_HELPERS_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/detail/memory.hpp"
#include "asio/handler_invoke_hook.hpp"
#include "asio/detail/push_options.hpp"
// Calls to asio_handler_invoke must be made from a namespace that does not
// contain overloads of this function. The asio_handler_invoke_helpers
// namespace is defined here for that purpose.
namespace asio_handler_invoke_helpers {
template <typename Function, typename Context>
inline void invoke(Function& function, Context& context)
{
#if !defined(ASIO_HAS_HANDLER_HOOKS)
Function tmp(function);
tmp();
#else
using asio::asio_handler_invoke;
asio_handler_invoke(function, asio::detail::addressof(context));
#endif
}
template <typename Function, typename Context>
inline void invoke(const Function& function, Context& context)
{
#if !defined(ASIO_HAS_HANDLER_HOOKS)
Function tmp(function);
tmp();
#else
using asio::asio_handler_invoke;
asio_handler_invoke(function, asio::detail::addressof(context));
#endif
}
} // namespace asio_handler_invoke_helpers
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_HANDLER_INVOKE_HELPERS_HPP

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//
// detail/handler_tracking.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_HANDLER_TRACKING_HPP
#define ASIO_DETAIL_HANDLER_TRACKING_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
namespace asio {
class execution_context;
} // namespace asio
#if defined(ASIO_CUSTOM_HANDLER_TRACKING)
# include ASIO_CUSTOM_HANDLER_TRACKING
#elif defined(ASIO_ENABLE_HANDLER_TRACKING)
# include "asio/error_code.hpp"
# include "asio/detail/cstdint.hpp"
# include "asio/detail/static_mutex.hpp"
# include "asio/detail/tss_ptr.hpp"
#endif // defined(ASIO_ENABLE_HANDLER_TRACKING)
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
#if defined(ASIO_CUSTOM_HANDLER_TRACKING)
// The user-specified header must define the following macros:
// - ASIO_INHERIT_TRACKED_HANDLER
// - ASIO_ALSO_INHERIT_TRACKED_HANDLER
// - ASIO_HANDLER_TRACKING_INIT
// - ASIO_HANDLER_CREATION(args)
// - ASIO_HANDLER_COMPLETION(args)
// - ASIO_HANDLER_INVOCATION_BEGIN(args)
// - ASIO_HANDLER_INVOCATION_END
// - ASIO_HANDLER_OPERATION(args)
// - ASIO_HANDLER_REACTOR_REGISTRATION(args)
// - ASIO_HANDLER_REACTOR_DEREGISTRATION(args)
// - ASIO_HANDLER_REACTOR_READ_EVENT
// - ASIO_HANDLER_REACTOR_WRITE_EVENT
// - ASIO_HANDLER_REACTOR_ERROR_EVENT
// - ASIO_HANDLER_REACTOR_EVENTS(args)
// - ASIO_HANDLER_REACTOR_OPERATION(args)
# if !defined(ASIO_ENABLE_HANDLER_TRACKING)
# define ASIO_ENABLE_HANDLER_TRACKING 1
# endif /// !defined(ASIO_ENABLE_HANDLER_TRACKING)
#elif defined(ASIO_ENABLE_HANDLER_TRACKING)
class handler_tracking
{
public:
class completion;
// Base class for objects containing tracked handlers.
class tracked_handler
{
private:
// Only the handler_tracking class will have access to the id.
friend class handler_tracking;
friend class completion;
uint64_t id_;
protected:
// Constructor initialises with no id.
tracked_handler() : id_(0) {}
// Prevent deletion through this type.
~tracked_handler() {}
};
// Initialise the tracking system.
ASIO_DECL static void init();
// Record the creation of a tracked handler.
ASIO_DECL static void creation(
execution_context& context, tracked_handler& h,
const char* object_type, void* object,
uintmax_t native_handle, const char* op_name);
class completion
{
public:
// Constructor records that handler is to be invoked with no arguments.
ASIO_DECL explicit completion(const tracked_handler& h);
// Destructor records only when an exception is thrown from the handler, or
// if the memory is being freed without the handler having been invoked.
ASIO_DECL ~completion();
// Records that handler is to be invoked with no arguments.
ASIO_DECL void invocation_begin();
// Records that handler is to be invoked with one arguments.
ASIO_DECL void invocation_begin(const asio::error_code& ec);
// Constructor records that handler is to be invoked with two arguments.
ASIO_DECL void invocation_begin(
const asio::error_code& ec, std::size_t bytes_transferred);
// Constructor records that handler is to be invoked with two arguments.
ASIO_DECL void invocation_begin(
const asio::error_code& ec, int signal_number);
// Constructor records that handler is to be invoked with two arguments.
ASIO_DECL void invocation_begin(
const asio::error_code& ec, const char* arg);
// Record that handler invocation has ended.
ASIO_DECL void invocation_end();
private:
friend class handler_tracking;
uint64_t id_;
bool invoked_;
completion* next_;
};
// Record an operation that is not directly associated with a handler.
ASIO_DECL static void operation(execution_context& context,
const char* object_type, void* object,
uintmax_t native_handle, const char* op_name);
// Record that a descriptor has been registered with the reactor.
ASIO_DECL static void reactor_registration(execution_context& context,
uintmax_t native_handle, uintmax_t registration);
// Record that a descriptor has been deregistered from the reactor.
ASIO_DECL static void reactor_deregistration(execution_context& context,
uintmax_t native_handle, uintmax_t registration);
// Record a reactor-based operation that is associated with a handler.
ASIO_DECL static void reactor_events(execution_context& context,
uintmax_t registration, unsigned events);
// Record a reactor-based operation that is associated with a handler.
ASIO_DECL static void reactor_operation(
const tracked_handler& h, const char* op_name,
const asio::error_code& ec);
// Record a reactor-based operation that is associated with a handler.
ASIO_DECL static void reactor_operation(
const tracked_handler& h, const char* op_name,
const asio::error_code& ec, std::size_t bytes_transferred);
// Write a line of output.
ASIO_DECL static void write_line(const char* format, ...);
private:
struct tracking_state;
ASIO_DECL static tracking_state* get_state();
};
# define ASIO_INHERIT_TRACKED_HANDLER \
: public asio::detail::handler_tracking::tracked_handler
# define ASIO_ALSO_INHERIT_TRACKED_HANDLER \
, public asio::detail::handler_tracking::tracked_handler
# define ASIO_HANDLER_TRACKING_INIT \
asio::detail::handler_tracking::init()
# define ASIO_HANDLER_CREATION(args) \
asio::detail::handler_tracking::creation args
# define ASIO_HANDLER_COMPLETION(args) \
asio::detail::handler_tracking::completion tracked_completion args
# define ASIO_HANDLER_INVOCATION_BEGIN(args) \
tracked_completion.invocation_begin args
# define ASIO_HANDLER_INVOCATION_END \
tracked_completion.invocation_end()
# define ASIO_HANDLER_OPERATION(args) \
asio::detail::handler_tracking::operation args
# define ASIO_HANDLER_REACTOR_REGISTRATION(args) \
asio::detail::handler_tracking::reactor_registration args
# define ASIO_HANDLER_REACTOR_DEREGISTRATION(args) \
asio::detail::handler_tracking::reactor_deregistration args
# define ASIO_HANDLER_REACTOR_READ_EVENT 1
# define ASIO_HANDLER_REACTOR_WRITE_EVENT 2
# define ASIO_HANDLER_REACTOR_ERROR_EVENT 4
# define ASIO_HANDLER_REACTOR_EVENTS(args) \
asio::detail::handler_tracking::reactor_events args
# define ASIO_HANDLER_REACTOR_OPERATION(args) \
asio::detail::handler_tracking::reactor_operation args
#else // defined(ASIO_ENABLE_HANDLER_TRACKING)
# define ASIO_INHERIT_TRACKED_HANDLER
# define ASIO_ALSO_INHERIT_TRACKED_HANDLER
# define ASIO_HANDLER_TRACKING_INIT (void)0
# define ASIO_HANDLER_CREATION(args) (void)0
# define ASIO_HANDLER_COMPLETION(args) (void)0
# define ASIO_HANDLER_INVOCATION_BEGIN(args) (void)0
# define ASIO_HANDLER_INVOCATION_END (void)0
# define ASIO_HANDLER_OPERATION(args) (void)0
# define ASIO_HANDLER_REACTOR_REGISTRATION(args) (void)0
# define ASIO_HANDLER_REACTOR_DEREGISTRATION(args) (void)0
# define ASIO_HANDLER_REACTOR_READ_EVENT 0
# define ASIO_HANDLER_REACTOR_WRITE_EVENT 0
# define ASIO_HANDLER_REACTOR_ERROR_EVENT 0
# define ASIO_HANDLER_REACTOR_EVENTS(args) (void)0
# define ASIO_HANDLER_REACTOR_OPERATION(args) (void)0
#endif // defined(ASIO_ENABLE_HANDLER_TRACKING)
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#if defined(ASIO_HEADER_ONLY)
# include "asio/detail/impl/handler_tracking.ipp"
#endif // defined(ASIO_HEADER_ONLY)
#endif // ASIO_DETAIL_HANDLER_TRACKING_HPP

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//
// detail/handler_type_requirements.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_HANDLER_TYPE_REQUIREMENTS_HPP
#define ASIO_DETAIL_HANDLER_TYPE_REQUIREMENTS_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
// Older versions of gcc have difficulty compiling the sizeof expressions where
// we test the handler type requirements. We'll disable checking of handler type
// requirements for those compilers, but otherwise enable it by default.
#if !defined(ASIO_DISABLE_HANDLER_TYPE_REQUIREMENTS)
# if !defined(__GNUC__) || (__GNUC__ >= 4)
# define ASIO_ENABLE_HANDLER_TYPE_REQUIREMENTS 1
# endif // !defined(__GNUC__) || (__GNUC__ >= 4)
#endif // !defined(ASIO_DISABLE_HANDLER_TYPE_REQUIREMENTS)
// With C++0x we can use a combination of enhanced SFINAE and static_assert to
// generate better template error messages. As this technique is not yet widely
// portable, we'll only enable it for tested compilers.
#if !defined(ASIO_DISABLE_HANDLER_TYPE_REQUIREMENTS_ASSERT)
# if defined(__GNUC__)
# if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5)) || (__GNUC__ > 4)
# if defined(__GXX_EXPERIMENTAL_CXX0X__)
# define ASIO_ENABLE_HANDLER_TYPE_REQUIREMENTS_ASSERT 1
# endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
# endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5)) || (__GNUC__ > 4)
# endif // defined(__GNUC__)
# if defined(ASIO_MSVC)
# if (_MSC_VER >= 1600)
# define ASIO_ENABLE_HANDLER_TYPE_REQUIREMENTS_ASSERT 1
# endif // (_MSC_VER >= 1600)
# endif // defined(ASIO_MSVC)
# if defined(__clang__)
# if __has_feature(__cxx_static_assert__)
# define ASIO_ENABLE_HANDLER_TYPE_REQUIREMENTS_ASSERT 1
# endif // __has_feature(cxx_static_assert)
# endif // defined(__clang__)
#endif // !defined(ASIO_DISABLE_HANDLER_TYPE_REQUIREMENTS)
#if defined(ASIO_ENABLE_HANDLER_TYPE_REQUIREMENTS)
# include "asio/async_result.hpp"
#endif // defined(ASIO_ENABLE_HANDLER_TYPE_REQUIREMENTS)
namespace asio {
namespace detail {
#if defined(ASIO_ENABLE_HANDLER_TYPE_REQUIREMENTS)
# if defined(ASIO_ENABLE_HANDLER_TYPE_REQUIREMENTS_ASSERT)
template <typename Handler>
auto zero_arg_copyable_handler_test(Handler h, void*)
-> decltype(
sizeof(Handler(static_cast<const Handler&>(h))),
((h)()),
char(0));
template <typename Handler>
char (&zero_arg_copyable_handler_test(Handler, ...))[2];
template <typename Handler, typename Arg1>
auto one_arg_handler_test(Handler h, Arg1* a1)
-> decltype(
sizeof(Handler(ASIO_MOVE_CAST(Handler)(h))),
((h)(*a1)),
char(0));
template <typename Handler>
char (&one_arg_handler_test(Handler h, ...))[2];
template <typename Handler, typename Arg1, typename Arg2>
auto two_arg_handler_test(Handler h, Arg1* a1, Arg2* a2)
-> decltype(
sizeof(Handler(ASIO_MOVE_CAST(Handler)(h))),
((h)(*a1, *a2)),
char(0));
template <typename Handler>
char (&two_arg_handler_test(Handler, ...))[2];
template <typename Handler, typename Arg1, typename Arg2>
auto two_arg_move_handler_test(Handler h, Arg1* a1, Arg2* a2)
-> decltype(
sizeof(Handler(ASIO_MOVE_CAST(Handler)(h))),
((h)(*a1, ASIO_MOVE_CAST(Arg2)(*a2))),
char(0));
template <typename Handler>
char (&two_arg_move_handler_test(Handler, ...))[2];
# define ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT(expr, msg) \
static_assert(expr, msg);
# else // defined(ASIO_ENABLE_HANDLER_TYPE_REQUIREMENTS_ASSERT)
# define ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT(expr, msg)
# endif // defined(ASIO_ENABLE_HANDLER_TYPE_REQUIREMENTS_ASSERT)
template <typename T> T& lvref();
template <typename T> T& lvref(T);
template <typename T> const T& clvref();
template <typename T> const T& clvref(T);
#if defined(ASIO_HAS_MOVE)
template <typename T> T rvref();
template <typename T> T rvref(T);
#else // defined(ASIO_HAS_MOVE)
template <typename T> const T& rvref();
template <typename T> const T& rvref(T);
#endif // defined(ASIO_HAS_MOVE)
template <typename T> char argbyv(T);
template <int>
struct handler_type_requirements
{
};
#define ASIO_LEGACY_COMPLETION_HANDLER_CHECK( \
handler_type, handler) \
\
typedef ASIO_HANDLER_TYPE(handler_type, \
void()) asio_true_handler_type; \
\
ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT( \
sizeof(asio::detail::zero_arg_copyable_handler_test( \
asio::detail::clvref< \
asio_true_handler_type>(), 0)) == 1, \
"CompletionHandler type requirements not met") \
\
typedef asio::detail::handler_type_requirements< \
sizeof( \
asio::detail::argbyv( \
asio::detail::clvref< \
asio_true_handler_type>())) + \
sizeof( \
asio::detail::lvref< \
asio_true_handler_type>()(), \
char(0))> ASIO_UNUSED_TYPEDEF
#define ASIO_READ_HANDLER_CHECK( \
handler_type, handler) \
\
typedef ASIO_HANDLER_TYPE(handler_type, \
void(asio::error_code, std::size_t)) \
asio_true_handler_type; \
\
ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT( \
sizeof(asio::detail::two_arg_handler_test( \
asio::detail::rvref< \
asio_true_handler_type>(), \
static_cast<const asio::error_code*>(0), \
static_cast<const std::size_t*>(0))) == 1, \
"ReadHandler type requirements not met") \
\
typedef asio::detail::handler_type_requirements< \
sizeof( \
asio::detail::argbyv( \
asio::detail::rvref< \
asio_true_handler_type>())) + \
sizeof( \
asio::detail::lvref< \
asio_true_handler_type>()( \
asio::detail::lvref<const asio::error_code>(), \
asio::detail::lvref<const std::size_t>()), \
char(0))> ASIO_UNUSED_TYPEDEF
#define ASIO_WRITE_HANDLER_CHECK( \
handler_type, handler) \
\
typedef ASIO_HANDLER_TYPE(handler_type, \
void(asio::error_code, std::size_t)) \
asio_true_handler_type; \
\
ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT( \
sizeof(asio::detail::two_arg_handler_test( \
asio::detail::rvref< \
asio_true_handler_type>(), \
static_cast<const asio::error_code*>(0), \
static_cast<const std::size_t*>(0))) == 1, \
"WriteHandler type requirements not met") \
\
typedef asio::detail::handler_type_requirements< \
sizeof( \
asio::detail::argbyv( \
asio::detail::rvref< \
asio_true_handler_type>())) + \
sizeof( \
asio::detail::lvref< \
asio_true_handler_type>()( \
asio::detail::lvref<const asio::error_code>(), \
asio::detail::lvref<const std::size_t>()), \
char(0))> ASIO_UNUSED_TYPEDEF
#define ASIO_ACCEPT_HANDLER_CHECK( \
handler_type, handler) \
\
typedef ASIO_HANDLER_TYPE(handler_type, \
void(asio::error_code)) \
asio_true_handler_type; \
\
ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT( \
sizeof(asio::detail::one_arg_handler_test( \
asio::detail::rvref< \
asio_true_handler_type>(), \
static_cast<const asio::error_code*>(0))) == 1, \
"AcceptHandler type requirements not met") \
\
typedef asio::detail::handler_type_requirements< \
sizeof( \
asio::detail::argbyv( \
asio::detail::rvref< \
asio_true_handler_type>())) + \
sizeof( \
asio::detail::lvref< \
asio_true_handler_type>()( \
asio::detail::lvref<const asio::error_code>()), \
char(0))> ASIO_UNUSED_TYPEDEF
#define ASIO_MOVE_ACCEPT_HANDLER_CHECK( \
handler_type, handler, socket_type) \
\
typedef ASIO_HANDLER_TYPE(handler_type, \
void(asio::error_code, socket_type)) \
asio_true_handler_type; \
\
ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT( \
sizeof(asio::detail::two_arg_move_handler_test( \
asio::detail::rvref< \
asio_true_handler_type>(), \
static_cast<const asio::error_code*>(0), \
static_cast<socket_type*>(0))) == 1, \
"MoveAcceptHandler type requirements not met") \
\
typedef asio::detail::handler_type_requirements< \
sizeof( \
asio::detail::argbyv( \
asio::detail::rvref< \
asio_true_handler_type>())) + \
sizeof( \
asio::detail::lvref< \
asio_true_handler_type>()( \
asio::detail::lvref<const asio::error_code>(), \
asio::detail::rvref<socket_type>()), \
char(0))> ASIO_UNUSED_TYPEDEF
#define ASIO_CONNECT_HANDLER_CHECK( \
handler_type, handler) \
\
typedef ASIO_HANDLER_TYPE(handler_type, \
void(asio::error_code)) \
asio_true_handler_type; \
\
ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT( \
sizeof(asio::detail::one_arg_handler_test( \
asio::detail::rvref< \
asio_true_handler_type>(), \
static_cast<const asio::error_code*>(0))) == 1, \
"ConnectHandler type requirements not met") \
\
typedef asio::detail::handler_type_requirements< \
sizeof( \
asio::detail::argbyv( \
asio::detail::rvref< \
asio_true_handler_type>())) + \
sizeof( \
asio::detail::lvref< \
asio_true_handler_type>()( \
asio::detail::lvref<const asio::error_code>()), \
char(0))> ASIO_UNUSED_TYPEDEF
#define ASIO_RANGE_CONNECT_HANDLER_CHECK( \
handler_type, handler, endpoint_type) \
\
typedef ASIO_HANDLER_TYPE(handler_type, \
void(asio::error_code, endpoint_type)) \
asio_true_handler_type; \
\
ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT( \
sizeof(asio::detail::two_arg_handler_test( \
asio::detail::rvref< \
asio_true_handler_type>(), \
static_cast<const asio::error_code*>(0), \
static_cast<const endpoint_type*>(0))) == 1, \
"RangeConnectHandler type requirements not met") \
\
typedef asio::detail::handler_type_requirements< \
sizeof( \
asio::detail::argbyv( \
asio::detail::rvref< \
asio_true_handler_type>())) + \
sizeof( \
asio::detail::lvref< \
asio_true_handler_type>()( \
asio::detail::lvref<const asio::error_code>(), \
asio::detail::lvref<const endpoint_type>()), \
char(0))> ASIO_UNUSED_TYPEDEF
#define ASIO_ITERATOR_CONNECT_HANDLER_CHECK( \
handler_type, handler, iter_type) \
\
typedef ASIO_HANDLER_TYPE(handler_type, \
void(asio::error_code, iter_type)) \
asio_true_handler_type; \
\
ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT( \
sizeof(asio::detail::two_arg_handler_test( \
asio::detail::rvref< \
asio_true_handler_type>(), \
static_cast<const asio::error_code*>(0), \
static_cast<const iter_type*>(0))) == 1, \
"IteratorConnectHandler type requirements not met") \
\
typedef asio::detail::handler_type_requirements< \
sizeof( \
asio::detail::argbyv( \
asio::detail::rvref< \
asio_true_handler_type>())) + \
sizeof( \
asio::detail::lvref< \
asio_true_handler_type>()( \
asio::detail::lvref<const asio::error_code>(), \
asio::detail::lvref<const iter_type>()), \
char(0))> ASIO_UNUSED_TYPEDEF
#define ASIO_RESOLVE_HANDLER_CHECK( \
handler_type, handler, range_type) \
\
typedef ASIO_HANDLER_TYPE(handler_type, \
void(asio::error_code, range_type)) \
asio_true_handler_type; \
\
ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT( \
sizeof(asio::detail::two_arg_handler_test( \
asio::detail::rvref< \
asio_true_handler_type>(), \
static_cast<const asio::error_code*>(0), \
static_cast<const range_type*>(0))) == 1, \
"ResolveHandler type requirements not met") \
\
typedef asio::detail::handler_type_requirements< \
sizeof( \
asio::detail::argbyv( \
asio::detail::rvref< \
asio_true_handler_type>())) + \
sizeof( \
asio::detail::lvref< \
asio_true_handler_type>()( \
asio::detail::lvref<const asio::error_code>(), \
asio::detail::lvref<const range_type>()), \
char(0))> ASIO_UNUSED_TYPEDEF
#define ASIO_WAIT_HANDLER_CHECK( \
handler_type, handler) \
\
typedef ASIO_HANDLER_TYPE(handler_type, \
void(asio::error_code)) \
asio_true_handler_type; \
\
ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT( \
sizeof(asio::detail::one_arg_handler_test( \
asio::detail::rvref< \
asio_true_handler_type>(), \
static_cast<const asio::error_code*>(0))) == 1, \
"WaitHandler type requirements not met") \
\
typedef asio::detail::handler_type_requirements< \
sizeof( \
asio::detail::argbyv( \
asio::detail::rvref< \
asio_true_handler_type>())) + \
sizeof( \
asio::detail::lvref< \
asio_true_handler_type>()( \
asio::detail::lvref<const asio::error_code>()), \
char(0))> ASIO_UNUSED_TYPEDEF
#define ASIO_SIGNAL_HANDLER_CHECK( \
handler_type, handler) \
\
typedef ASIO_HANDLER_TYPE(handler_type, \
void(asio::error_code, int)) \
asio_true_handler_type; \
\
ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT( \
sizeof(asio::detail::two_arg_handler_test( \
asio::detail::rvref< \
asio_true_handler_type>(), \
static_cast<const asio::error_code*>(0), \
static_cast<const int*>(0))) == 1, \
"SignalHandler type requirements not met") \
\
typedef asio::detail::handler_type_requirements< \
sizeof( \
asio::detail::argbyv( \
asio::detail::rvref< \
asio_true_handler_type>())) + \
sizeof( \
asio::detail::lvref< \
asio_true_handler_type>()( \
asio::detail::lvref<const asio::error_code>(), \
asio::detail::lvref<const int>()), \
char(0))> ASIO_UNUSED_TYPEDEF
#define ASIO_HANDSHAKE_HANDLER_CHECK( \
handler_type, handler) \
\
typedef ASIO_HANDLER_TYPE(handler_type, \
void(asio::error_code)) \
asio_true_handler_type; \
\
ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT( \
sizeof(asio::detail::one_arg_handler_test( \
asio::detail::rvref< \
asio_true_handler_type>(), \
static_cast<const asio::error_code*>(0))) == 1, \
"HandshakeHandler type requirements not met") \
\
typedef asio::detail::handler_type_requirements< \
sizeof( \
asio::detail::argbyv( \
asio::detail::rvref< \
asio_true_handler_type>())) + \
sizeof( \
asio::detail::lvref< \
asio_true_handler_type>()( \
asio::detail::lvref<const asio::error_code>()), \
char(0))> ASIO_UNUSED_TYPEDEF
#define ASIO_BUFFERED_HANDSHAKE_HANDLER_CHECK( \
handler_type, handler) \
\
typedef ASIO_HANDLER_TYPE(handler_type, \
void(asio::error_code, std::size_t)) \
asio_true_handler_type; \
\
ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT( \
sizeof(asio::detail::two_arg_handler_test( \
asio::detail::rvref< \
asio_true_handler_type>(), \
static_cast<const asio::error_code*>(0), \
static_cast<const std::size_t*>(0))) == 1, \
"BufferedHandshakeHandler type requirements not met") \
\
typedef asio::detail::handler_type_requirements< \
sizeof( \
asio::detail::argbyv( \
asio::detail::rvref< \
asio_true_handler_type>())) + \
sizeof( \
asio::detail::lvref< \
asio_true_handler_type>()( \
asio::detail::lvref<const asio::error_code>(), \
asio::detail::lvref<const std::size_t>()), \
char(0))> ASIO_UNUSED_TYPEDEF
#define ASIO_SHUTDOWN_HANDLER_CHECK( \
handler_type, handler) \
\
typedef ASIO_HANDLER_TYPE(handler_type, \
void(asio::error_code)) \
asio_true_handler_type; \
\
ASIO_HANDLER_TYPE_REQUIREMENTS_ASSERT( \
sizeof(asio::detail::one_arg_handler_test( \
asio::detail::rvref< \
asio_true_handler_type>(), \
static_cast<const asio::error_code*>(0))) == 1, \
"ShutdownHandler type requirements not met") \
\
typedef asio::detail::handler_type_requirements< \
sizeof( \
asio::detail::argbyv( \
asio::detail::rvref< \
asio_true_handler_type>())) + \
sizeof( \
asio::detail::lvref< \
asio_true_handler_type>()( \
asio::detail::lvref<const asio::error_code>()), \
char(0))> ASIO_UNUSED_TYPEDEF
#else // !defined(ASIO_ENABLE_HANDLER_TYPE_REQUIREMENTS)
#define ASIO_LEGACY_COMPLETION_HANDLER_CHECK( \
handler_type, handler) \
typedef int ASIO_UNUSED_TYPEDEF
#define ASIO_READ_HANDLER_CHECK( \
handler_type, handler) \
typedef int ASIO_UNUSED_TYPEDEF
#define ASIO_WRITE_HANDLER_CHECK( \
handler_type, handler) \
typedef int ASIO_UNUSED_TYPEDEF
#define ASIO_ACCEPT_HANDLER_CHECK( \
handler_type, handler) \
typedef int ASIO_UNUSED_TYPEDEF
#define ASIO_MOVE_ACCEPT_HANDLER_CHECK( \
handler_type, handler, socket_type) \
typedef int ASIO_UNUSED_TYPEDEF
#define ASIO_CONNECT_HANDLER_CHECK( \
handler_type, handler) \
typedef int ASIO_UNUSED_TYPEDEF
#define ASIO_RANGE_CONNECT_HANDLER_CHECK( \
handler_type, handler, iter_type) \
typedef int ASIO_UNUSED_TYPEDEF
#define ASIO_ITERATOR_CONNECT_HANDLER_CHECK( \
handler_type, handler, iter_type) \
typedef int ASIO_UNUSED_TYPEDEF
#define ASIO_RESOLVE_HANDLER_CHECK( \
handler_type, handler, iter_type) \
typedef int ASIO_UNUSED_TYPEDEF
#define ASIO_WAIT_HANDLER_CHECK( \
handler_type, handler) \
typedef int ASIO_UNUSED_TYPEDEF
#define ASIO_SIGNAL_HANDLER_CHECK( \
handler_type, handler) \
typedef int ASIO_UNUSED_TYPEDEF
#define ASIO_HANDSHAKE_HANDLER_CHECK( \
handler_type, handler) \
typedef int ASIO_UNUSED_TYPEDEF
#define ASIO_BUFFERED_HANDSHAKE_HANDLER_CHECK( \
handler_type, handler) \
typedef int ASIO_UNUSED_TYPEDEF
#define ASIO_SHUTDOWN_HANDLER_CHECK( \
handler_type, handler) \
typedef int ASIO_UNUSED_TYPEDEF
#endif // !defined(ASIO_ENABLE_HANDLER_TYPE_REQUIREMENTS)
} // namespace detail
} // namespace asio
#endif // ASIO_DETAIL_HANDLER_TYPE_REQUIREMENTS_HPP

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//
// detail/handler_work.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_HANDLER_WORK_HPP
#define ASIO_DETAIL_HANDLER_WORK_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/associated_executor.hpp"
#include "asio/detail/handler_invoke_helpers.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
// A helper class template to allow completion handlers to be dispatched
// through either the new executors framework or the old invocaton hook. The
// primary template uses the new executors framework.
template <typename Handler, typename Executor
= typename associated_executor<Handler>::type>
class handler_work
{
public:
explicit handler_work(Handler& handler) ASIO_NOEXCEPT
: executor_(associated_executor<Handler>::get(handler))
{
}
static void start(Handler& handler) ASIO_NOEXCEPT
{
Executor ex(associated_executor<Handler>::get(handler));
ex.on_work_started();
}
~handler_work()
{
executor_.on_work_finished();
}
template <typename Function>
void complete(Function& function, Handler& handler)
{
executor_.dispatch(ASIO_MOVE_CAST(Function)(function),
associated_allocator<Handler>::get(handler));
}
private:
// Disallow copying and assignment.
handler_work(const handler_work&);
handler_work& operator=(const handler_work&);
typename associated_executor<Handler>::type executor_;
};
// This specialisation dispatches a handler through the old invocation hook.
// The specialisation is not strictly required for correctness, as the
// system_executor will dispatch through the hook anyway. However, by doing
// this we avoid an extra copy of the handler.
template <typename Handler>
class handler_work<Handler, system_executor>
{
public:
explicit handler_work(Handler&) ASIO_NOEXCEPT {}
static void start(Handler&) ASIO_NOEXCEPT {}
~handler_work() {}
template <typename Function>
void complete(Function& function, Handler& handler)
{
asio_handler_invoke_helpers::invoke(function, handler);
}
private:
// Disallow copying and assignment.
handler_work(const handler_work&);
handler_work& operator=(const handler_work&);
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_HANDLER_WORK_HPP

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//
// detail/hash_map.hpp
// ~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_HASH_MAP_HPP
#define ASIO_DETAIL_HASH_MAP_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <list>
#include <utility>
#include "asio/detail/assert.hpp"
#include "asio/detail/noncopyable.hpp"
#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
# include "asio/detail/socket_types.hpp"
#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
inline std::size_t calculate_hash_value(int i)
{
return static_cast<std::size_t>(i);
}
inline std::size_t calculate_hash_value(void* p)
{
return reinterpret_cast<std::size_t>(p)
+ (reinterpret_cast<std::size_t>(p) >> 3);
}
#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
inline std::size_t calculate_hash_value(SOCKET s)
{
return static_cast<std::size_t>(s);
}
#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
// Note: assumes K and V are POD types.
template <typename K, typename V>
class hash_map
: private noncopyable
{
public:
// The type of a value in the map.
typedef std::pair<K, V> value_type;
// The type of a non-const iterator over the hash map.
typedef typename std::list<value_type>::iterator iterator;
// The type of a const iterator over the hash map.
typedef typename std::list<value_type>::const_iterator const_iterator;
// Constructor.
hash_map()
: size_(0),
buckets_(0),
num_buckets_(0)
{
}
// Destructor.
~hash_map()
{
delete[] buckets_;
}
// Get an iterator for the beginning of the map.
iterator begin()
{
return values_.begin();
}
// Get an iterator for the beginning of the map.
const_iterator begin() const
{
return values_.begin();
}
// Get an iterator for the end of the map.
iterator end()
{
return values_.end();
}
// Get an iterator for the end of the map.
const_iterator end() const
{
return values_.end();
}
// Check whether the map is empty.
bool empty() const
{
return values_.empty();
}
// Find an entry in the map.
iterator find(const K& k)
{
if (num_buckets_)
{
size_t bucket = calculate_hash_value(k) % num_buckets_;
iterator it = buckets_[bucket].first;
if (it == values_.end())
return values_.end();
iterator end_it = buckets_[bucket].last;
++end_it;
while (it != end_it)
{
if (it->first == k)
return it;
++it;
}
}
return values_.end();
}
// Find an entry in the map.
const_iterator find(const K& k) const
{
if (num_buckets_)
{
size_t bucket = calculate_hash_value(k) % num_buckets_;
const_iterator it = buckets_[bucket].first;
if (it == values_.end())
return it;
const_iterator end_it = buckets_[bucket].last;
++end_it;
while (it != end_it)
{
if (it->first == k)
return it;
++it;
}
}
return values_.end();
}
// Insert a new entry into the map.
std::pair<iterator, bool> insert(const value_type& v)
{
if (size_ + 1 >= num_buckets_)
rehash(hash_size(size_ + 1));
size_t bucket = calculate_hash_value(v.first) % num_buckets_;
iterator it = buckets_[bucket].first;
if (it == values_.end())
{
buckets_[bucket].first = buckets_[bucket].last =
values_insert(values_.end(), v);
++size_;
return std::pair<iterator, bool>(buckets_[bucket].last, true);
}
iterator end_it = buckets_[bucket].last;
++end_it;
while (it != end_it)
{
if (it->first == v.first)
return std::pair<iterator, bool>(it, false);
++it;
}
buckets_[bucket].last = values_insert(end_it, v);
++size_;
return std::pair<iterator, bool>(buckets_[bucket].last, true);
}
// Erase an entry from the map.
void erase(iterator it)
{
ASIO_ASSERT(it != values_.end());
ASIO_ASSERT(num_buckets_ != 0);
size_t bucket = calculate_hash_value(it->first) % num_buckets_;
bool is_first = (it == buckets_[bucket].first);
bool is_last = (it == buckets_[bucket].last);
if (is_first && is_last)
buckets_[bucket].first = buckets_[bucket].last = values_.end();
else if (is_first)
++buckets_[bucket].first;
else if (is_last)
--buckets_[bucket].last;
values_erase(it);
--size_;
}
// Erase a key from the map.
void erase(const K& k)
{
iterator it = find(k);
if (it != values_.end())
erase(it);
}
// Remove all entries from the map.
void clear()
{
// Clear the values.
values_.clear();
size_ = 0;
// Initialise all buckets to empty.
iterator end_it = values_.end();
for (size_t i = 0; i < num_buckets_; ++i)
buckets_[i].first = buckets_[i].last = end_it;
}
private:
// Calculate the hash size for the specified number of elements.
static std::size_t hash_size(std::size_t num_elems)
{
static std::size_t sizes[] =
{
#if defined(ASIO_HASH_MAP_BUCKETS)
ASIO_HASH_MAP_BUCKETS
#else // ASIO_HASH_MAP_BUCKETS
3, 13, 23, 53, 97, 193, 389, 769, 1543, 3079, 6151, 12289, 24593,
49157, 98317, 196613, 393241, 786433, 1572869, 3145739, 6291469,
12582917, 25165843
#endif // ASIO_HASH_MAP_BUCKETS
};
const std::size_t nth_size = sizeof(sizes) / sizeof(std::size_t) - 1;
for (std::size_t i = 0; i < nth_size; ++i)
if (num_elems < sizes[i])
return sizes[i];
return sizes[nth_size];
}
// Re-initialise the hash from the values already contained in the list.
void rehash(std::size_t num_buckets)
{
if (num_buckets == num_buckets_)
return;
ASIO_ASSERT(num_buckets != 0);
iterator end_iter = values_.end();
// Update number of buckets and initialise all buckets to empty.
bucket_type* tmp = new bucket_type[num_buckets];
delete[] buckets_;
buckets_ = tmp;
num_buckets_ = num_buckets;
for (std::size_t i = 0; i < num_buckets_; ++i)
buckets_[i].first = buckets_[i].last = end_iter;
// Put all values back into the hash.
iterator iter = values_.begin();
while (iter != end_iter)
{
std::size_t bucket = calculate_hash_value(iter->first) % num_buckets_;
if (buckets_[bucket].last == end_iter)
{
buckets_[bucket].first = buckets_[bucket].last = iter++;
}
else if (++buckets_[bucket].last == iter)
{
++iter;
}
else
{
values_.splice(buckets_[bucket].last, values_, iter++);
--buckets_[bucket].last;
}
}
}
// Insert an element into the values list by splicing from the spares list,
// if a spare is available, and otherwise by inserting a new element.
iterator values_insert(iterator it, const value_type& v)
{
if (spares_.empty())
{
return values_.insert(it, v);
}
else
{
spares_.front() = v;
values_.splice(it, spares_, spares_.begin());
return --it;
}
}
// Erase an element from the values list by splicing it to the spares list.
void values_erase(iterator it)
{
*it = value_type();
spares_.splice(spares_.begin(), values_, it);
}
// The number of elements in the hash.
std::size_t size_;
// The list of all values in the hash map.
std::list<value_type> values_;
// The list of spare nodes waiting to be recycled. Assumes that POD types only
// are stored in the hash map.
std::list<value_type> spares_;
// The type for a bucket in the hash table.
struct bucket_type
{
iterator first;
iterator last;
};
// The buckets in the hash.
bucket_type* buckets_;
// The number of buckets in the hash.
std::size_t num_buckets_;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_HASH_MAP_HPP

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//
// detail/impl/dev_poll_reactor.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_IMPL_DEV_POLL_REACTOR_HPP
#define ASIO_DETAIL_IMPL_DEV_POLL_REACTOR_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_HAS_DEV_POLL)
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
template <typename Time_Traits>
void dev_poll_reactor::add_timer_queue(timer_queue<Time_Traits>& queue)
{
do_add_timer_queue(queue);
}
template <typename Time_Traits>
void dev_poll_reactor::remove_timer_queue(timer_queue<Time_Traits>& queue)
{
do_remove_timer_queue(queue);
}
template <typename Time_Traits>
void dev_poll_reactor::schedule_timer(timer_queue<Time_Traits>& queue,
const typename Time_Traits::time_type& time,
typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op)
{
asio::detail::mutex::scoped_lock lock(mutex_);
if (shutdown_)
{
scheduler_.post_immediate_completion(op, false);
return;
}
bool earliest = queue.enqueue_timer(time, timer, op);
scheduler_.work_started();
if (earliest)
interrupter_.interrupt();
}
template <typename Time_Traits>
std::size_t dev_poll_reactor::cancel_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& timer,
std::size_t max_cancelled)
{
asio::detail::mutex::scoped_lock lock(mutex_);
op_queue<operation> ops;
std::size_t n = queue.cancel_timer(timer, ops, max_cancelled);
lock.unlock();
scheduler_.post_deferred_completions(ops);
return n;
}
template <typename Time_Traits>
void dev_poll_reactor::move_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& target,
typename timer_queue<Time_Traits>::per_timer_data& source)
{
asio::detail::mutex::scoped_lock lock(mutex_);
op_queue<operation> ops;
queue.cancel_timer(target, ops);
queue.move_timer(target, source);
lock.unlock();
scheduler_.post_deferred_completions(ops);
}
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(ASIO_HAS_DEV_POLL)
#endif // ASIO_DETAIL_IMPL_DEV_POLL_REACTOR_HPP

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//
// detail/impl/epoll_reactor.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_IMPL_EPOLL_REACTOR_HPP
#define ASIO_DETAIL_IMPL_EPOLL_REACTOR_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#if defined(ASIO_HAS_EPOLL)
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
template <typename Time_Traits>
void epoll_reactor::add_timer_queue(timer_queue<Time_Traits>& queue)
{
do_add_timer_queue(queue);
}
template <typename Time_Traits>
void epoll_reactor::remove_timer_queue(timer_queue<Time_Traits>& queue)
{
do_remove_timer_queue(queue);
}
template <typename Time_Traits>
void epoll_reactor::schedule_timer(timer_queue<Time_Traits>& queue,
const typename Time_Traits::time_type& time,
typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op)
{
mutex::scoped_lock lock(mutex_);
if (shutdown_)
{
scheduler_.post_immediate_completion(op, false);
return;
}
bool earliest = queue.enqueue_timer(time, timer, op);
scheduler_.work_started();
if (earliest)
update_timeout();
}
template <typename Time_Traits>
std::size_t epoll_reactor::cancel_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& timer,
std::size_t max_cancelled)
{
mutex::scoped_lock lock(mutex_);
op_queue<operation> ops;
std::size_t n = queue.cancel_timer(timer, ops, max_cancelled);
lock.unlock();
scheduler_.post_deferred_completions(ops);
return n;
}
template <typename Time_Traits>
void epoll_reactor::move_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& target,
typename timer_queue<Time_Traits>::per_timer_data& source)
{
mutex::scoped_lock lock(mutex_);
op_queue<operation> ops;
queue.cancel_timer(target, ops);
queue.move_timer(target, source);
lock.unlock();
scheduler_.post_deferred_completions(ops);
}
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(ASIO_HAS_EPOLL)
#endif // ASIO_DETAIL_IMPL_EPOLL_REACTOR_HPP

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//
// detail/impl/kqueue_reactor.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
// Copyright (c) 2005 Stefan Arentz (stefan at soze dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_IMPL_KQUEUE_REACTOR_HPP
#define ASIO_DETAIL_IMPL_KQUEUE_REACTOR_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_HAS_KQUEUE)
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
template <typename Time_Traits>
void kqueue_reactor::add_timer_queue(timer_queue<Time_Traits>& queue)
{
do_add_timer_queue(queue);
}
// Remove a timer queue from the reactor.
template <typename Time_Traits>
void kqueue_reactor::remove_timer_queue(timer_queue<Time_Traits>& queue)
{
do_remove_timer_queue(queue);
}
template <typename Time_Traits>
void kqueue_reactor::schedule_timer(timer_queue<Time_Traits>& queue,
const typename Time_Traits::time_type& time,
typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op)
{
mutex::scoped_lock lock(mutex_);
if (shutdown_)
{
scheduler_.post_immediate_completion(op, false);
return;
}
bool earliest = queue.enqueue_timer(time, timer, op);
scheduler_.work_started();
if (earliest)
interrupt();
}
template <typename Time_Traits>
std::size_t kqueue_reactor::cancel_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& timer,
std::size_t max_cancelled)
{
mutex::scoped_lock lock(mutex_);
op_queue<operation> ops;
std::size_t n = queue.cancel_timer(timer, ops, max_cancelled);
lock.unlock();
scheduler_.post_deferred_completions(ops);
return n;
}
template <typename Time_Traits>
void kqueue_reactor::move_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& target,
typename timer_queue<Time_Traits>::per_timer_data& source)
{
mutex::scoped_lock lock(mutex_);
op_queue<operation> ops;
queue.cancel_timer(target, ops);
queue.move_timer(target, source);
lock.unlock();
scheduler_.post_deferred_completions(ops);
}
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(ASIO_HAS_KQUEUE)
#endif // ASIO_DETAIL_IMPL_KQUEUE_REACTOR_HPP

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//
// detail/impl/select_reactor.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_IMPL_SELECT_REACTOR_HPP
#define ASIO_DETAIL_IMPL_SELECT_REACTOR_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_HAS_IOCP) \
|| (!defined(ASIO_HAS_DEV_POLL) \
&& !defined(ASIO_HAS_EPOLL) \
&& !defined(ASIO_HAS_KQUEUE) \
&& !defined(ASIO_WINDOWS_RUNTIME))
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
template <typename Time_Traits>
void select_reactor::add_timer_queue(timer_queue<Time_Traits>& queue)
{
do_add_timer_queue(queue);
}
// Remove a timer queue from the reactor.
template <typename Time_Traits>
void select_reactor::remove_timer_queue(timer_queue<Time_Traits>& queue)
{
do_remove_timer_queue(queue);
}
template <typename Time_Traits>
void select_reactor::schedule_timer(timer_queue<Time_Traits>& queue,
const typename Time_Traits::time_type& time,
typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op)
{
asio::detail::mutex::scoped_lock lock(mutex_);
if (shutdown_)
{
scheduler_.post_immediate_completion(op, false);
return;
}
bool earliest = queue.enqueue_timer(time, timer, op);
scheduler_.work_started();
if (earliest)
interrupter_.interrupt();
}
template <typename Time_Traits>
std::size_t select_reactor::cancel_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& timer,
std::size_t max_cancelled)
{
asio::detail::mutex::scoped_lock lock(mutex_);
op_queue<operation> ops;
std::size_t n = queue.cancel_timer(timer, ops, max_cancelled);
lock.unlock();
scheduler_.post_deferred_completions(ops);
return n;
}
template <typename Time_Traits>
void select_reactor::move_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& target,
typename timer_queue<Time_Traits>::per_timer_data& source)
{
asio::detail::mutex::scoped_lock lock(mutex_);
op_queue<operation> ops;
queue.cancel_timer(target, ops);
queue.move_timer(target, source);
lock.unlock();
scheduler_.post_deferred_completions(ops);
}
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(ASIO_HAS_IOCP)
// || (!defined(ASIO_HAS_DEV_POLL)
// && !defined(ASIO_HAS_EPOLL)
// && !defined(ASIO_HAS_KQUEUE)
// && !defined(ASIO_WINDOWS_RUNTIME))
#endif // ASIO_DETAIL_IMPL_SELECT_REACTOR_HPP

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