173 lines
7.3 KiB
C
173 lines
7.3 KiB
C
// 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.
|
|
#pragma once
|
|
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include "multi_heap.h"
|
|
|
|
/**
|
|
* @brief Flags to indicate the capabilities of the various memory systems
|
|
*/
|
|
#define MALLOC_CAP_EXEC (1<<0) ///< Memory must be able to run executable code
|
|
#define MALLOC_CAP_32BIT (1<<1) ///< Memory must allow for aligned 32-bit data accesses
|
|
#define MALLOC_CAP_8BIT (1<<2) ///< Memory must allow for 8/16/...-bit data accesses
|
|
#define MALLOC_CAP_DMA (1<<3) ///< Memory must be able to accessed by DMA
|
|
#define MALLOC_CAP_PID2 (1<<4) ///< Memory must be mapped to PID2 memory space (PIDs are not currently used)
|
|
#define MALLOC_CAP_PID3 (1<<5) ///< Memory must be mapped to PID3 memory space (PIDs are not currently used)
|
|
#define MALLOC_CAP_PID4 (1<<6) ///< Memory must be mapped to PID4 memory space (PIDs are not currently used)
|
|
#define MALLOC_CAP_PID5 (1<<7) ///< Memory must be mapped to PID5 memory space (PIDs are not currently used)
|
|
#define MALLOC_CAP_PID6 (1<<8) ///< Memory must be mapped to PID6 memory space (PIDs are not currently used)
|
|
#define MALLOC_CAP_PID7 (1<<9) ///< Memory must be mapped to PID7 memory space (PIDs are not currently used)
|
|
#define MALLOC_CAP_SPISRAM (1<<10) ///< Memory must be in SPI SRAM
|
|
#define MALLOC_CAP_INVALID (1<<31) ///< Memory can't be used / list end marker
|
|
|
|
/**
|
|
* @brief Allocate a chunk of memory which has the given capabilities
|
|
*
|
|
* Equivalent semantics to libc malloc(), for capability-aware memory.
|
|
*
|
|
* In IDF, ``malloc(p)`` is equivalent to ``heaps_caps_malloc(p, MALLOC_CAP_8BIT)``.
|
|
*
|
|
* @param size Size, in bytes, of the amount of memory to allocate
|
|
* @param caps Bitwise OR of MALLOC_CAP_* flags indicating the type
|
|
* of memory to be returned
|
|
*
|
|
* @return A pointer to the memory allocated on success, NULL on failure
|
|
*/
|
|
void *heap_caps_malloc(size_t size, uint32_t caps);
|
|
|
|
/**
|
|
* @brief Free memory previously allocated via heap_caps_malloc() or heap_caps_realloc().
|
|
*
|
|
* Equivalent semantics to libc free(), for capability-aware memory.
|
|
*
|
|
* In IDF, ``free(p)`` is equivalent to ``heap_caps_free(p)``.
|
|
*
|
|
* @param ptr Pointer to memory previously returned from heap_caps_malloc() or heap_caps_realloc(). Can be NULL.
|
|
*/
|
|
void heap_caps_free( void *ptr);
|
|
|
|
/**
|
|
* @brief Reallocate memory previously allocated via heaps_caps_malloc() or heaps_caps_realloc().
|
|
*
|
|
* Equivalent semantics to libc realloc(), for capability-aware memory.
|
|
*
|
|
* In IDF, ``realloc(p, s)`` is equivalent to ``heap_caps_realloc(p, s, MALLOC_CAP_8BIT)``.
|
|
*
|
|
* 'caps' parameter can be different to the capabilities that any original 'ptr' was allocated with. In this way,
|
|
* realloc can be used to "move" a buffer if necessary to ensure it meets a new set of capabilities.
|
|
*
|
|
* @param ptr Pointer to previously allocated memory, or NULL for a new allocation.
|
|
* @param size Size of the new buffer requested, or 0 to free the buffer.
|
|
* @param caps Bitwise OR of MALLOC_CAP_* flags indicating the type
|
|
* of memory desired for the new allocation.
|
|
*
|
|
* @return Pointer to a new buffer of size 'size' with capabilities 'caps', or NULL if allocation failed.
|
|
*/
|
|
void *heap_caps_realloc( void *ptr, size_t size, int caps);
|
|
|
|
|
|
/**
|
|
* @brief Get the total free size of all the regions that have the given capabilities
|
|
*
|
|
* This function takes all regions capable of having the given capabilities allocated in them
|
|
* and adds up the free space they have.
|
|
*
|
|
* Note that because of heap fragmentation it is probably not possible to allocate a single block of memory
|
|
* of this size. Use heap_caps_get_largest_free_block() for this purpose.
|
|
|
|
* @param caps Bitwise OR of MALLOC_CAP_* flags indicating the type
|
|
* of memory
|
|
*
|
|
* @return Amount of free bytes in the regions
|
|
*/
|
|
size_t heap_caps_get_free_size( uint32_t caps );
|
|
|
|
|
|
/**
|
|
* @brief Get the total minimum free memory of all regions with the given capabilities
|
|
*
|
|
* This adds all the low water marks of the regions capable of delivering the memory
|
|
* with the given capabilities.
|
|
*
|
|
* Note the result may be less than the global all-time minimum available heap of this kind, as "low water marks" are
|
|
* tracked per-region. Individual regions' heaps may have reached their "low water marks" at different points in time. However
|
|
* this result still gives a "worst case" indication for all-time minimum free heap.
|
|
*
|
|
* @param caps Bitwise OR of MALLOC_CAP_* flags indicating the type
|
|
* of memory
|
|
*
|
|
* @return Amount of free bytes in the regions
|
|
*/
|
|
size_t heap_caps_get_minimum_free_size( uint32_t caps );
|
|
|
|
/**
|
|
* @brief Get the largest free block of memory able to be allocated with the given capabilities.
|
|
*
|
|
* Returns the largest value of ``s`` for which ``heap_caps_malloc(s, caps)`` will succeed.
|
|
*
|
|
* @param caps Bitwise OR of MALLOC_CAP_* flags indicating the type
|
|
* of memory
|
|
*
|
|
* @return Size of largest free block in bytes.
|
|
*/
|
|
size_t heap_caps_get_largest_free_block( uint32_t caps );
|
|
|
|
|
|
/**
|
|
* @brief Get heap info for all regions with the given capabilities.
|
|
*
|
|
* Calls multi_heap_info() on all heaps which share the given capabilities. The information returned is an aggregate
|
|
* across all matching heaps. The meanings of fields are the same as defined for multi_heap_info_t, except that
|
|
* ``minimum_free_bytes`` has the same caveats described in heap_caps_get_minimum_free_size().
|
|
*
|
|
* @param info Pointer to a structure which will be filled with relevant
|
|
* heap metadata.
|
|
* @param caps Bitwise OR of MALLOC_CAP_* flags indicating the type
|
|
* of memory
|
|
*
|
|
*/
|
|
void heap_caps_get_info( multi_heap_info_t *info, uint32_t caps );
|
|
|
|
|
|
/**
|
|
* @brief Print a summary of all memory with the given capabilities.
|
|
*
|
|
* Calls multi_heap_info() on all heaps which share the given capabilities, and
|
|
* prints a two-line summary for each, then a total summary.
|
|
*
|
|
* @param caps Bitwise OR of MALLOC_CAP_* flags indicating the type
|
|
* of memory
|
|
*
|
|
*/
|
|
void heap_caps_print_heap_info( uint32_t caps );
|
|
|
|
/**
|
|
* @brief Check integrity of all heaps with the given capabilities.
|
|
*
|
|
* Calls multi_heap_check() on all heaps which share the given capabilities. Optionally
|
|
* print errors if the heaps are corrupt.
|
|
*
|
|
* Call ``heap_caps_check_integrity(MALLOC_CAP_INVALID, print_errors)`` to check
|
|
* all regions' heaps.
|
|
*
|
|
* @param caps Bitwise OR of MALLOC_CAP_* flags indicating the type
|
|
* of memory
|
|
* @param print_errors Print specific errors if heap corruption is found.
|
|
*
|
|
* @return True if all heaps are valid, False if at least one heap is corrupt.
|
|
*/
|
|
bool heap_caps_check_integrity(uint32_t caps, bool print_errors);
|