716 lines
25 KiB
C++
716 lines
25 KiB
C++
//
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// impl/read.hpp
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// ~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef ASIO_IMPL_READ_HPP
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#define ASIO_IMPL_READ_HPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include <algorithm>
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#include "asio/associated_allocator.hpp"
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#include "asio/associated_executor.hpp"
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#include "asio/buffer.hpp"
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#include "asio/completion_condition.hpp"
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#include "asio/detail/array_fwd.hpp"
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#include "asio/detail/base_from_completion_cond.hpp"
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#include "asio/detail/bind_handler.hpp"
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#include "asio/detail/consuming_buffers.hpp"
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#include "asio/detail/dependent_type.hpp"
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#include "asio/detail/handler_alloc_helpers.hpp"
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#include "asio/detail/handler_cont_helpers.hpp"
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#include "asio/detail/handler_invoke_helpers.hpp"
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#include "asio/detail/handler_type_requirements.hpp"
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#include "asio/detail/throw_error.hpp"
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#include "asio/error.hpp"
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#include "asio/detail/push_options.hpp"
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namespace asio {
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namespace detail
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{
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template <typename SyncReadStream, typename MutableBufferSequence,
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typename MutableBufferIterator, typename CompletionCondition>
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std::size_t read_buffer_sequence(SyncReadStream& s,
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const MutableBufferSequence& buffers, const MutableBufferIterator&,
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CompletionCondition completion_condition, asio::error_code& ec)
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{
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ec = asio::error_code();
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asio::detail::consuming_buffers<mutable_buffer,
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MutableBufferSequence, MutableBufferIterator> tmp(buffers);
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while (!tmp.empty())
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{
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if (std::size_t max_size = detail::adapt_completion_condition_result(
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completion_condition(ec, tmp.total_consumed())))
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tmp.consume(s.read_some(tmp.prepare(max_size), ec));
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else
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break;
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}
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return tmp.total_consumed();;
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}
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} // namespace detail
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template <typename SyncReadStream, typename MutableBufferSequence,
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typename CompletionCondition>
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std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers,
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CompletionCondition completion_condition, asio::error_code& ec,
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typename enable_if<
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is_mutable_buffer_sequence<MutableBufferSequence>::value
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>::type*)
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{
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return detail::read_buffer_sequence(s, buffers,
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asio::buffer_sequence_begin(buffers), completion_condition, ec);
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}
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template <typename SyncReadStream, typename MutableBufferSequence>
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inline std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers,
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typename enable_if<
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is_mutable_buffer_sequence<MutableBufferSequence>::value
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>::type*)
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{
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asio::error_code ec;
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std::size_t bytes_transferred = read(s, buffers, transfer_all(), ec);
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asio::detail::throw_error(ec, "read");
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return bytes_transferred;
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}
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template <typename SyncReadStream, typename MutableBufferSequence>
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inline std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers,
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asio::error_code& ec,
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typename enable_if<
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is_mutable_buffer_sequence<MutableBufferSequence>::value
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>::type*)
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{
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return read(s, buffers, transfer_all(), ec);
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}
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template <typename SyncReadStream, typename MutableBufferSequence,
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typename CompletionCondition>
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inline std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers,
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CompletionCondition completion_condition,
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typename enable_if<
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is_mutable_buffer_sequence<MutableBufferSequence>::value
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>::type*)
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{
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asio::error_code ec;
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std::size_t bytes_transferred = read(s, buffers, completion_condition, ec);
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asio::detail::throw_error(ec, "read");
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return bytes_transferred;
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}
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template <typename SyncReadStream, typename DynamicBuffer,
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typename CompletionCondition>
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std::size_t read(SyncReadStream& s,
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ASIO_MOVE_ARG(DynamicBuffer) buffers,
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CompletionCondition completion_condition, asio::error_code& ec,
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typename enable_if<
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is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
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>::type*)
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{
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typename decay<DynamicBuffer>::type b(
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ASIO_MOVE_CAST(DynamicBuffer)(buffers));
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ec = asio::error_code();
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std::size_t total_transferred = 0;
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std::size_t max_size = detail::adapt_completion_condition_result(
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completion_condition(ec, total_transferred));
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std::size_t bytes_available = std::min<std::size_t>(
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std::max<std::size_t>(512, b.capacity() - b.size()),
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std::min<std::size_t>(max_size, b.max_size() - b.size()));
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while (bytes_available > 0)
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{
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std::size_t bytes_transferred = s.read_some(b.prepare(bytes_available), ec);
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b.commit(bytes_transferred);
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total_transferred += bytes_transferred;
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max_size = detail::adapt_completion_condition_result(
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completion_condition(ec, total_transferred));
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bytes_available = std::min<std::size_t>(
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std::max<std::size_t>(512, b.capacity() - b.size()),
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std::min<std::size_t>(max_size, b.max_size() - b.size()));
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}
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return total_transferred;
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}
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template <typename SyncReadStream, typename DynamicBuffer>
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inline std::size_t read(SyncReadStream& s,
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ASIO_MOVE_ARG(DynamicBuffer) buffers,
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typename enable_if<
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is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
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>::type*)
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{
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asio::error_code ec;
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std::size_t bytes_transferred = read(s,
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ASIO_MOVE_CAST(DynamicBuffer)(buffers), transfer_all(), ec);
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asio::detail::throw_error(ec, "read");
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return bytes_transferred;
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}
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template <typename SyncReadStream, typename DynamicBuffer>
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inline std::size_t read(SyncReadStream& s,
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ASIO_MOVE_ARG(DynamicBuffer) buffers,
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asio::error_code& ec,
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typename enable_if<
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is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
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>::type*)
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{
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return read(s, ASIO_MOVE_CAST(DynamicBuffer)(buffers),
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transfer_all(), ec);
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}
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template <typename SyncReadStream, typename DynamicBuffer,
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typename CompletionCondition>
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inline std::size_t read(SyncReadStream& s,
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ASIO_MOVE_ARG(DynamicBuffer) buffers,
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CompletionCondition completion_condition,
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typename enable_if<
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is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
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>::type*)
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{
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asio::error_code ec;
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std::size_t bytes_transferred = read(s,
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ASIO_MOVE_CAST(DynamicBuffer)(buffers),
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completion_condition, ec);
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asio::detail::throw_error(ec, "read");
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return bytes_transferred;
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}
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#if !defined(ASIO_NO_EXTENSIONS)
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#if !defined(ASIO_NO_IOSTREAM)
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template <typename SyncReadStream, typename Allocator,
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typename CompletionCondition>
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inline std::size_t read(SyncReadStream& s,
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asio::basic_streambuf<Allocator>& b,
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CompletionCondition completion_condition, asio::error_code& ec)
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{
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return read(s, basic_streambuf_ref<Allocator>(b), completion_condition, ec);
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}
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template <typename SyncReadStream, typename Allocator>
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inline std::size_t read(SyncReadStream& s,
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asio::basic_streambuf<Allocator>& b)
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{
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return read(s, basic_streambuf_ref<Allocator>(b));
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}
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template <typename SyncReadStream, typename Allocator>
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inline std::size_t read(SyncReadStream& s,
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asio::basic_streambuf<Allocator>& b,
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asio::error_code& ec)
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{
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return read(s, basic_streambuf_ref<Allocator>(b), ec);
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}
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template <typename SyncReadStream, typename Allocator,
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typename CompletionCondition>
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inline std::size_t read(SyncReadStream& s,
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asio::basic_streambuf<Allocator>& b,
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CompletionCondition completion_condition)
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{
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return read(s, basic_streambuf_ref<Allocator>(b), completion_condition);
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}
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#endif // !defined(ASIO_NO_IOSTREAM)
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#endif // !defined(ASIO_NO_EXTENSIONS)
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namespace detail
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{
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template <typename AsyncReadStream, typename MutableBufferSequence,
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typename MutableBufferIterator, typename CompletionCondition,
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typename ReadHandler>
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class read_op
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: detail::base_from_completion_cond<CompletionCondition>
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{
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public:
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read_op(AsyncReadStream& stream, const MutableBufferSequence& buffers,
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CompletionCondition completion_condition, ReadHandler& handler)
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: detail::base_from_completion_cond<
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CompletionCondition>(completion_condition),
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stream_(stream),
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buffers_(buffers),
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start_(0),
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handler_(ASIO_MOVE_CAST(ReadHandler)(handler))
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{
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}
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#if defined(ASIO_HAS_MOVE)
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read_op(const read_op& other)
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: detail::base_from_completion_cond<CompletionCondition>(other),
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stream_(other.stream_),
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buffers_(other.buffers_),
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start_(other.start_),
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handler_(other.handler_)
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{
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}
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read_op(read_op&& other)
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: detail::base_from_completion_cond<CompletionCondition>(other),
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stream_(other.stream_),
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buffers_(other.buffers_),
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start_(other.start_),
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handler_(ASIO_MOVE_CAST(ReadHandler)(other.handler_))
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{
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}
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#endif // defined(ASIO_HAS_MOVE)
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void operator()(const asio::error_code& ec,
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std::size_t bytes_transferred, int start = 0)
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{
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std::size_t max_size;
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switch (start_ = start)
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{
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case 1:
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max_size = this->check_for_completion(ec, buffers_.total_consumed());
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do
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{
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stream_.async_read_some(buffers_.prepare(max_size),
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ASIO_MOVE_CAST(read_op)(*this));
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return; default:
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buffers_.consume(bytes_transferred);
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if ((!ec && bytes_transferred == 0) || buffers_.empty())
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break;
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max_size = this->check_for_completion(ec, buffers_.total_consumed());
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} while (max_size > 0);
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handler_(ec, buffers_.total_consumed());
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}
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}
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//private:
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AsyncReadStream& stream_;
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asio::detail::consuming_buffers<mutable_buffer,
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MutableBufferSequence, MutableBufferIterator> buffers_;
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int start_;
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ReadHandler handler_;
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};
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template <typename AsyncReadStream, typename MutableBufferSequence,
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typename MutableBufferIterator, typename CompletionCondition,
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typename ReadHandler>
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inline void* asio_handler_allocate(std::size_t size,
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read_op<AsyncReadStream, MutableBufferSequence, MutableBufferIterator,
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CompletionCondition, ReadHandler>* this_handler)
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{
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return asio_handler_alloc_helpers::allocate(
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size, this_handler->handler_);
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}
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template <typename AsyncReadStream, typename MutableBufferSequence,
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typename MutableBufferIterator, typename CompletionCondition,
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typename ReadHandler>
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inline void asio_handler_deallocate(void* pointer, std::size_t size,
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read_op<AsyncReadStream, MutableBufferSequence, MutableBufferIterator,
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CompletionCondition, ReadHandler>* this_handler)
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{
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asio_handler_alloc_helpers::deallocate(
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pointer, size, this_handler->handler_);
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}
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template <typename AsyncReadStream, typename MutableBufferSequence,
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typename MutableBufferIterator, typename CompletionCondition,
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typename ReadHandler>
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inline bool asio_handler_is_continuation(
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read_op<AsyncReadStream, MutableBufferSequence, MutableBufferIterator,
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CompletionCondition, ReadHandler>* this_handler)
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{
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return this_handler->start_ == 0 ? true
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: asio_handler_cont_helpers::is_continuation(
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this_handler->handler_);
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}
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template <typename Function, typename AsyncReadStream,
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typename MutableBufferSequence, typename MutableBufferIterator,
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typename CompletionCondition, typename ReadHandler>
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inline void asio_handler_invoke(Function& function,
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read_op<AsyncReadStream, MutableBufferSequence, MutableBufferIterator,
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CompletionCondition, ReadHandler>* this_handler)
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{
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asio_handler_invoke_helpers::invoke(
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function, this_handler->handler_);
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}
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template <typename Function, typename AsyncReadStream,
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typename MutableBufferSequence, typename MutableBufferIterator,
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typename CompletionCondition, typename ReadHandler>
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inline void asio_handler_invoke(const Function& function,
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read_op<AsyncReadStream, MutableBufferSequence, MutableBufferIterator,
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CompletionCondition, ReadHandler>* this_handler)
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{
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asio_handler_invoke_helpers::invoke(
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function, this_handler->handler_);
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}
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template <typename AsyncReadStream, typename MutableBufferSequence,
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typename MutableBufferIterator, typename CompletionCondition,
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typename ReadHandler>
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inline void start_read_buffer_sequence_op(AsyncReadStream& stream,
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const MutableBufferSequence& buffers, const MutableBufferIterator&,
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CompletionCondition completion_condition, ReadHandler& handler)
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{
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detail::read_op<AsyncReadStream, MutableBufferSequence,
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MutableBufferIterator, CompletionCondition, ReadHandler>(
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stream, buffers, completion_condition, handler)(
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asio::error_code(), 0, 1);
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}
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} // namespace detail
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#if !defined(GENERATING_DOCUMENTATION)
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template <typename AsyncReadStream, typename MutableBufferSequence,
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typename MutableBufferIterator, typename CompletionCondition,
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typename ReadHandler, typename Allocator>
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struct associated_allocator<
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detail::read_op<AsyncReadStream, MutableBufferSequence,
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MutableBufferIterator, CompletionCondition, ReadHandler>,
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Allocator>
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{
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typedef typename associated_allocator<ReadHandler, Allocator>::type type;
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static type get(
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const detail::read_op<AsyncReadStream, MutableBufferSequence,
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MutableBufferIterator, CompletionCondition, ReadHandler>& h,
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const Allocator& a = Allocator()) ASIO_NOEXCEPT
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{
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return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
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}
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};
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template <typename AsyncReadStream, typename MutableBufferSequence,
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typename MutableBufferIterator, typename CompletionCondition,
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typename ReadHandler, typename Executor>
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struct associated_executor<
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detail::read_op<AsyncReadStream, MutableBufferSequence,
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MutableBufferIterator, CompletionCondition, ReadHandler>,
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Executor>
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{
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typedef typename associated_executor<ReadHandler, Executor>::type type;
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static type get(
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const detail::read_op<AsyncReadStream, MutableBufferSequence,
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MutableBufferIterator, CompletionCondition, ReadHandler>& h,
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const Executor& ex = Executor()) ASIO_NOEXCEPT
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{
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return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
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}
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};
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#endif // !defined(GENERATING_DOCUMENTATION)
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template <typename AsyncReadStream, typename MutableBufferSequence,
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typename CompletionCondition, typename ReadHandler>
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inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
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void (asio::error_code, std::size_t))
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async_read(AsyncReadStream& s, const MutableBufferSequence& buffers,
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CompletionCondition completion_condition,
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ASIO_MOVE_ARG(ReadHandler) handler,
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typename enable_if<
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is_mutable_buffer_sequence<MutableBufferSequence>::value
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>::type*)
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{
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// If you get an error on the following line it means that your handler does
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// not meet the documented type requirements for a ReadHandler.
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ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
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async_completion<ReadHandler,
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void (asio::error_code, std::size_t)> init(handler);
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detail::start_read_buffer_sequence_op(s, buffers,
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asio::buffer_sequence_begin(buffers), completion_condition,
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init.completion_handler);
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return init.result.get();
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}
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template <typename AsyncReadStream, typename MutableBufferSequence,
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typename ReadHandler>
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inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
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void (asio::error_code, std::size_t))
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async_read(AsyncReadStream& s, const MutableBufferSequence& buffers,
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ASIO_MOVE_ARG(ReadHandler) handler,
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typename enable_if<
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is_mutable_buffer_sequence<MutableBufferSequence>::value
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>::type*)
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{
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// If you get an error on the following line it means that your handler does
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// not meet the documented type requirements for a ReadHandler.
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ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
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async_completion<ReadHandler,
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void (asio::error_code, std::size_t)> init(handler);
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detail::start_read_buffer_sequence_op(s, buffers,
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asio::buffer_sequence_begin(buffers), transfer_all(),
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init.completion_handler);
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return init.result.get();
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}
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namespace detail
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{
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template <typename AsyncReadStream, typename DynamicBuffer,
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typename CompletionCondition, typename ReadHandler>
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class read_dynbuf_op
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: detail::base_from_completion_cond<CompletionCondition>
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{
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public:
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template <typename BufferSequence>
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read_dynbuf_op(AsyncReadStream& stream,
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ASIO_MOVE_ARG(BufferSequence) buffers,
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CompletionCondition completion_condition, ReadHandler& handler)
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: detail::base_from_completion_cond<
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CompletionCondition>(completion_condition),
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stream_(stream),
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buffers_(ASIO_MOVE_CAST(BufferSequence)(buffers)),
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start_(0),
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total_transferred_(0),
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handler_(ASIO_MOVE_CAST(ReadHandler)(handler))
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{
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}
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#if defined(ASIO_HAS_MOVE)
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read_dynbuf_op(const read_dynbuf_op& other)
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: detail::base_from_completion_cond<CompletionCondition>(other),
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stream_(other.stream_),
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buffers_(other.buffers_),
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start_(other.start_),
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total_transferred_(other.total_transferred_),
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handler_(other.handler_)
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{
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}
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read_dynbuf_op(read_dynbuf_op&& other)
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: detail::base_from_completion_cond<CompletionCondition>(other),
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stream_(other.stream_),
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buffers_(ASIO_MOVE_CAST(DynamicBuffer)(other.buffers_)),
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start_(other.start_),
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total_transferred_(other.total_transferred_),
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handler_(ASIO_MOVE_CAST(ReadHandler)(other.handler_))
|
|
{
|
|
}
|
|
#endif // defined(ASIO_HAS_MOVE)
|
|
|
|
void operator()(const asio::error_code& ec,
|
|
std::size_t bytes_transferred, int start = 0)
|
|
{
|
|
std::size_t max_size, bytes_available;
|
|
switch (start_ = start)
|
|
{
|
|
case 1:
|
|
max_size = this->check_for_completion(ec, total_transferred_);
|
|
bytes_available = std::min<std::size_t>(
|
|
std::max<std::size_t>(512,
|
|
buffers_.capacity() - buffers_.size()),
|
|
std::min<std::size_t>(max_size,
|
|
buffers_.max_size() - buffers_.size()));
|
|
for (;;)
|
|
{
|
|
stream_.async_read_some(buffers_.prepare(bytes_available),
|
|
ASIO_MOVE_CAST(read_dynbuf_op)(*this));
|
|
return; default:
|
|
total_transferred_ += bytes_transferred;
|
|
buffers_.commit(bytes_transferred);
|
|
max_size = this->check_for_completion(ec, total_transferred_);
|
|
bytes_available = std::min<std::size_t>(
|
|
std::max<std::size_t>(512,
|
|
buffers_.capacity() - buffers_.size()),
|
|
std::min<std::size_t>(max_size,
|
|
buffers_.max_size() - buffers_.size()));
|
|
if ((!ec && bytes_transferred == 0) || bytes_available == 0)
|
|
break;
|
|
}
|
|
|
|
handler_(ec, static_cast<const std::size_t&>(total_transferred_));
|
|
}
|
|
}
|
|
|
|
//private:
|
|
AsyncReadStream& stream_;
|
|
DynamicBuffer buffers_;
|
|
int start_;
|
|
std::size_t total_transferred_;
|
|
ReadHandler handler_;
|
|
};
|
|
|
|
template <typename AsyncReadStream, typename DynamicBuffer,
|
|
typename CompletionCondition, typename ReadHandler>
|
|
inline void* asio_handler_allocate(std::size_t size,
|
|
read_dynbuf_op<AsyncReadStream, DynamicBuffer,
|
|
CompletionCondition, ReadHandler>* this_handler)
|
|
{
|
|
return asio_handler_alloc_helpers::allocate(
|
|
size, this_handler->handler_);
|
|
}
|
|
|
|
template <typename AsyncReadStream, typename DynamicBuffer,
|
|
typename CompletionCondition, typename ReadHandler>
|
|
inline void asio_handler_deallocate(void* pointer, std::size_t size,
|
|
read_dynbuf_op<AsyncReadStream, DynamicBuffer,
|
|
CompletionCondition, ReadHandler>* this_handler)
|
|
{
|
|
asio_handler_alloc_helpers::deallocate(
|
|
pointer, size, this_handler->handler_);
|
|
}
|
|
|
|
template <typename AsyncReadStream, typename DynamicBuffer,
|
|
typename CompletionCondition, typename ReadHandler>
|
|
inline bool asio_handler_is_continuation(
|
|
read_dynbuf_op<AsyncReadStream, DynamicBuffer,
|
|
CompletionCondition, ReadHandler>* this_handler)
|
|
{
|
|
return this_handler->start_ == 0 ? true
|
|
: asio_handler_cont_helpers::is_continuation(
|
|
this_handler->handler_);
|
|
}
|
|
|
|
template <typename Function, typename AsyncReadStream,
|
|
typename DynamicBuffer, typename CompletionCondition,
|
|
typename ReadHandler>
|
|
inline void asio_handler_invoke(Function& function,
|
|
read_dynbuf_op<AsyncReadStream, DynamicBuffer,
|
|
CompletionCondition, ReadHandler>* this_handler)
|
|
{
|
|
asio_handler_invoke_helpers::invoke(
|
|
function, this_handler->handler_);
|
|
}
|
|
|
|
template <typename Function, typename AsyncReadStream,
|
|
typename DynamicBuffer, typename CompletionCondition,
|
|
typename ReadHandler>
|
|
inline void asio_handler_invoke(const Function& function,
|
|
read_dynbuf_op<AsyncReadStream, DynamicBuffer,
|
|
CompletionCondition, ReadHandler>* this_handler)
|
|
{
|
|
asio_handler_invoke_helpers::invoke(
|
|
function, this_handler->handler_);
|
|
}
|
|
} // namespace detail
|
|
|
|
#if !defined(GENERATING_DOCUMENTATION)
|
|
|
|
template <typename AsyncReadStream, typename DynamicBuffer,
|
|
typename CompletionCondition, typename ReadHandler, typename Allocator>
|
|
struct associated_allocator<
|
|
detail::read_dynbuf_op<AsyncReadStream,
|
|
DynamicBuffer, CompletionCondition, ReadHandler>,
|
|
Allocator>
|
|
{
|
|
typedef typename associated_allocator<ReadHandler, Allocator>::type type;
|
|
|
|
static type get(
|
|
const detail::read_dynbuf_op<AsyncReadStream,
|
|
DynamicBuffer, CompletionCondition, ReadHandler>& h,
|
|
const Allocator& a = Allocator()) ASIO_NOEXCEPT
|
|
{
|
|
return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
|
|
}
|
|
};
|
|
|
|
template <typename AsyncReadStream, typename DynamicBuffer,
|
|
typename CompletionCondition, typename ReadHandler, typename Executor>
|
|
struct associated_executor<
|
|
detail::read_dynbuf_op<AsyncReadStream,
|
|
DynamicBuffer, CompletionCondition, ReadHandler>,
|
|
Executor>
|
|
{
|
|
typedef typename associated_executor<ReadHandler, Executor>::type type;
|
|
|
|
static type get(
|
|
const detail::read_dynbuf_op<AsyncReadStream,
|
|
DynamicBuffer, CompletionCondition, ReadHandler>& h,
|
|
const Executor& ex = Executor()) ASIO_NOEXCEPT
|
|
{
|
|
return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
|
|
}
|
|
};
|
|
|
|
#endif // !defined(GENERATING_DOCUMENTATION)
|
|
|
|
template <typename AsyncReadStream,
|
|
typename DynamicBuffer, typename ReadHandler>
|
|
inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
|
|
void (asio::error_code, std::size_t))
|
|
async_read(AsyncReadStream& s,
|
|
ASIO_MOVE_ARG(DynamicBuffer) buffers,
|
|
ASIO_MOVE_ARG(ReadHandler) handler,
|
|
typename enable_if<
|
|
is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
|
|
>::type*)
|
|
{
|
|
return async_read(s,
|
|
ASIO_MOVE_CAST(DynamicBuffer)(buffers),
|
|
transfer_all(), ASIO_MOVE_CAST(ReadHandler)(handler));
|
|
}
|
|
|
|
template <typename AsyncReadStream, typename DynamicBuffer,
|
|
typename CompletionCondition, typename ReadHandler>
|
|
inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
|
|
void (asio::error_code, std::size_t))
|
|
async_read(AsyncReadStream& s,
|
|
ASIO_MOVE_ARG(DynamicBuffer) buffers,
|
|
CompletionCondition completion_condition,
|
|
ASIO_MOVE_ARG(ReadHandler) handler,
|
|
typename enable_if<
|
|
is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
|
|
>::type*)
|
|
{
|
|
// 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;
|
|
|
|
async_completion<ReadHandler,
|
|
void (asio::error_code, std::size_t)> init(handler);
|
|
|
|
detail::read_dynbuf_op<AsyncReadStream,
|
|
typename decay<DynamicBuffer>::type,
|
|
CompletionCondition, ASIO_HANDLER_TYPE(
|
|
ReadHandler, void (asio::error_code, std::size_t))>(
|
|
s, ASIO_MOVE_CAST(DynamicBuffer)(buffers),
|
|
completion_condition, init.completion_handler)(
|
|
asio::error_code(), 0, 1);
|
|
|
|
return init.result.get();
|
|
}
|
|
|
|
#if !defined(ASIO_NO_EXTENSIONS)
|
|
#if !defined(ASIO_NO_IOSTREAM)
|
|
|
|
template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
|
|
inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
|
|
void (asio::error_code, std::size_t))
|
|
async_read(AsyncReadStream& s, basic_streambuf<Allocator>& b,
|
|
ASIO_MOVE_ARG(ReadHandler) handler)
|
|
{
|
|
return async_read(s, basic_streambuf_ref<Allocator>(b),
|
|
ASIO_MOVE_CAST(ReadHandler)(handler));
|
|
}
|
|
|
|
template <typename AsyncReadStream, typename Allocator,
|
|
typename CompletionCondition, typename ReadHandler>
|
|
inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
|
|
void (asio::error_code, std::size_t))
|
|
async_read(AsyncReadStream& s, basic_streambuf<Allocator>& b,
|
|
CompletionCondition completion_condition,
|
|
ASIO_MOVE_ARG(ReadHandler) handler)
|
|
{
|
|
return async_read(s, basic_streambuf_ref<Allocator>(b),
|
|
completion_condition, ASIO_MOVE_CAST(ReadHandler)(handler));
|
|
}
|
|
|
|
#endif // !defined(ASIO_NO_IOSTREAM)
|
|
#endif // !defined(ASIO_NO_EXTENSIONS)
|
|
|
|
} // namespace asio
|
|
|
|
#include "asio/detail/pop_options.hpp"
|
|
|
|
#endif // ASIO_IMPL_READ_HPP
|