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include/asio/impl/write.hpp
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780
include/asio/impl/write.hpp
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//
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// impl/write.hpp
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// ~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2025 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_WRITE_HPP
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#define ASIO_IMPL_WRITE_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 "asio/associator.hpp"
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#include "asio/buffer.hpp"
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#include "asio/detail/array_fwd.hpp"
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#include "asio/detail/base_from_cancellation_state.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_cont_helpers.hpp"
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#include "asio/detail/handler_tracking.hpp"
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#include "asio/detail/handler_type_requirements.hpp"
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#include "asio/detail/non_const_lvalue.hpp"
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#include "asio/detail/throw_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 SyncWriteStream, typename ConstBufferSequence,
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typename ConstBufferIterator, typename CompletionCondition>
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std::size_t write(SyncWriteStream& s,
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const ConstBufferSequence& buffers, const ConstBufferIterator&,
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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<const_buffer,
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ConstBufferSequence, ConstBufferIterator> 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.write_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 SyncWriteStream, typename ConstBufferSequence,
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typename CompletionCondition>
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inline std::size_t write(SyncWriteStream& s, const ConstBufferSequence& buffers,
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CompletionCondition completion_condition, asio::error_code& ec,
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constraint_t<
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is_const_buffer_sequence<ConstBufferSequence>::value
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>,
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constraint_t<
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is_completion_condition<CompletionCondition>::value
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>)
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{
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return detail::write(s, buffers,
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asio::buffer_sequence_begin(buffers),
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static_cast<CompletionCondition&&>(completion_condition), ec);
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}
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template <typename SyncWriteStream, typename ConstBufferSequence>
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inline std::size_t write(SyncWriteStream& s, const ConstBufferSequence& buffers,
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constraint_t<
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is_const_buffer_sequence<ConstBufferSequence>::value
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>)
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{
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asio::error_code ec;
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std::size_t bytes_transferred = write(s, buffers, transfer_all(), ec);
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asio::detail::throw_error(ec, "write");
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return bytes_transferred;
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}
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template <typename SyncWriteStream, typename ConstBufferSequence>
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inline std::size_t write(SyncWriteStream& s, const ConstBufferSequence& buffers,
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asio::error_code& ec,
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constraint_t<
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is_const_buffer_sequence<ConstBufferSequence>::value
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>)
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{
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return write(s, buffers, transfer_all(), ec);
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}
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template <typename SyncWriteStream, typename ConstBufferSequence,
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typename CompletionCondition>
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inline std::size_t write(SyncWriteStream& s, const ConstBufferSequence& buffers,
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CompletionCondition completion_condition,
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constraint_t<
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is_const_buffer_sequence<ConstBufferSequence>::value
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>,
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constraint_t<
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is_completion_condition<CompletionCondition>::value
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>)
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{
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asio::error_code ec;
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std::size_t bytes_transferred = write(s, buffers,
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static_cast<CompletionCondition&&>(completion_condition), ec);
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asio::detail::throw_error(ec, "write");
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return bytes_transferred;
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}
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#if !defined(ASIO_NO_DYNAMIC_BUFFER_V1)
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template <typename SyncWriteStream, typename DynamicBuffer_v1,
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typename CompletionCondition>
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std::size_t write(SyncWriteStream& s,
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DynamicBuffer_v1&& buffers,
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CompletionCondition completion_condition, asio::error_code& ec,
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constraint_t<
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is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
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>,
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constraint_t<
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!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
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>,
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constraint_t<
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is_completion_condition<CompletionCondition>::value
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>)
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{
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decay_t<DynamicBuffer_v1> b(
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static_cast<DynamicBuffer_v1&&>(buffers));
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std::size_t bytes_transferred = write(s, b.data(),
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static_cast<CompletionCondition&&>(completion_condition), ec);
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b.consume(bytes_transferred);
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return bytes_transferred;
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}
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template <typename SyncWriteStream, typename DynamicBuffer_v1>
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inline std::size_t write(SyncWriteStream& s,
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DynamicBuffer_v1&& buffers,
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constraint_t<
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is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
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>,
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constraint_t<
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!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
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>)
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{
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asio::error_code ec;
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std::size_t bytes_transferred = write(s,
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static_cast<DynamicBuffer_v1&&>(buffers),
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transfer_all(), ec);
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asio::detail::throw_error(ec, "write");
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return bytes_transferred;
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}
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template <typename SyncWriteStream, typename DynamicBuffer_v1>
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inline std::size_t write(SyncWriteStream& s,
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DynamicBuffer_v1&& buffers,
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asio::error_code& ec,
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constraint_t<
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is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
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>,
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constraint_t<
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!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
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>)
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{
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return write(s, static_cast<DynamicBuffer_v1&&>(buffers),
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transfer_all(), ec);
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}
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template <typename SyncWriteStream, typename DynamicBuffer_v1,
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typename CompletionCondition>
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inline std::size_t write(SyncWriteStream& s,
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DynamicBuffer_v1&& buffers,
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CompletionCondition completion_condition,
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constraint_t<
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is_dynamic_buffer_v1<decay_t<DynamicBuffer_v1>>::value
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>,
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constraint_t<
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!is_dynamic_buffer_v2<decay_t<DynamicBuffer_v1>>::value
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>,
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constraint_t<
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is_completion_condition<CompletionCondition>::value
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>)
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{
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asio::error_code ec;
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std::size_t bytes_transferred = write(s,
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static_cast<DynamicBuffer_v1&&>(buffers),
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static_cast<CompletionCondition&&>(completion_condition), ec);
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asio::detail::throw_error(ec, "write");
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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 SyncWriteStream, typename Allocator,
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typename CompletionCondition>
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inline std::size_t write(SyncWriteStream& 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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constraint_t<
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is_completion_condition<CompletionCondition>::value
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>)
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{
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return write(s, basic_streambuf_ref<Allocator>(b),
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static_cast<CompletionCondition&&>(completion_condition), ec);
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}
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template <typename SyncWriteStream, typename Allocator>
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inline std::size_t write(SyncWriteStream& s,
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asio::basic_streambuf<Allocator>& b)
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{
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return write(s, basic_streambuf_ref<Allocator>(b));
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}
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template <typename SyncWriteStream, typename Allocator>
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inline std::size_t write(SyncWriteStream& 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 write(s, basic_streambuf_ref<Allocator>(b), ec);
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}
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template <typename SyncWriteStream, typename Allocator,
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typename CompletionCondition>
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inline std::size_t write(SyncWriteStream& s,
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asio::basic_streambuf<Allocator>& b,
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CompletionCondition completion_condition,
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constraint_t<
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is_completion_condition<CompletionCondition>::value
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>)
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{
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return write(s, basic_streambuf_ref<Allocator>(b),
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static_cast<CompletionCondition&&>(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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#endif // !defined(ASIO_NO_DYNAMIC_BUFFER_V1)
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template <typename SyncWriteStream, typename DynamicBuffer_v2,
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typename CompletionCondition>
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std::size_t write(SyncWriteStream& s, DynamicBuffer_v2 buffers,
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CompletionCondition completion_condition, asio::error_code& ec,
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constraint_t<
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is_dynamic_buffer_v2<DynamicBuffer_v2>::value
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>,
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constraint_t<
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is_completion_condition<CompletionCondition>::value
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>)
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{
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std::size_t bytes_transferred = write(s, buffers.data(0, buffers.size()),
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static_cast<CompletionCondition&&>(completion_condition), ec);
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buffers.consume(bytes_transferred);
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return bytes_transferred;
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}
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template <typename SyncWriteStream, typename DynamicBuffer_v2>
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inline std::size_t write(SyncWriteStream& s, DynamicBuffer_v2 buffers,
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constraint_t<
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is_dynamic_buffer_v2<DynamicBuffer_v2>::value
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>)
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{
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asio::error_code ec;
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std::size_t bytes_transferred = write(s,
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static_cast<DynamicBuffer_v2&&>(buffers),
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transfer_all(), ec);
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asio::detail::throw_error(ec, "write");
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return bytes_transferred;
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}
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template <typename SyncWriteStream, typename DynamicBuffer_v2>
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inline std::size_t write(SyncWriteStream& s, DynamicBuffer_v2 buffers,
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asio::error_code& ec,
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constraint_t<
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is_dynamic_buffer_v2<DynamicBuffer_v2>::value
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>)
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{
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return write(s, static_cast<DynamicBuffer_v2&&>(buffers),
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transfer_all(), ec);
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}
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template <typename SyncWriteStream, typename DynamicBuffer_v2,
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typename CompletionCondition>
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inline std::size_t write(SyncWriteStream& s, DynamicBuffer_v2 buffers,
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CompletionCondition completion_condition,
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constraint_t<
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is_dynamic_buffer_v2<DynamicBuffer_v2>::value
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>,
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constraint_t<
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is_completion_condition<CompletionCondition>::value
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>)
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{
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asio::error_code ec;
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std::size_t bytes_transferred = write(s,
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static_cast<DynamicBuffer_v2&&>(buffers),
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static_cast<CompletionCondition&&>(completion_condition), ec);
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asio::detail::throw_error(ec, "write");
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return bytes_transferred;
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}
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namespace detail
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{
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template <typename AsyncWriteStream, typename ConstBufferSequence,
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typename ConstBufferIterator, typename CompletionCondition,
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typename WriteHandler>
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class write_op
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: public base_from_cancellation_state<WriteHandler>,
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base_from_completion_cond<CompletionCondition>
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{
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public:
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write_op(AsyncWriteStream& stream, const ConstBufferSequence& buffers,
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CompletionCondition& completion_condition, WriteHandler& handler)
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: base_from_cancellation_state<WriteHandler>(
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handler, enable_partial_cancellation()),
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base_from_completion_cond<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_(static_cast<WriteHandler&&>(handler))
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{
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}
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write_op(const write_op& other)
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: base_from_cancellation_state<WriteHandler>(other),
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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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write_op(write_op&& other)
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: base_from_cancellation_state<WriteHandler>(
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static_cast<base_from_cancellation_state<WriteHandler>&&>(other)),
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base_from_completion_cond<CompletionCondition>(
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static_cast<base_from_completion_cond<CompletionCondition>&&>(other)),
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stream_(other.stream_),
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buffers_(static_cast<buffers_type&&>(other.buffers_)),
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start_(other.start_),
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handler_(static_cast<WriteHandler&&>(other.handler_))
|
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{
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}
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|
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void operator()(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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for (;;)
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{
|
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{
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ASIO_HANDLER_LOCATION((__FILE__, __LINE__, "async_write"));
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stream_.async_write_some(buffers_.prepare(max_size),
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static_cast<write_op&&>(*this));
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}
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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());
|
||||
if (max_size == 0)
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break;
|
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if (this->cancelled() != cancellation_type::none)
|
||||
{
|
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ec = error::operation_aborted;
|
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break;
|
||||
}
|
||||
}
|
||||
|
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static_cast<WriteHandler&&>(handler_)(
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static_cast<const asio::error_code&>(ec),
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static_cast<const std::size_t&>(buffers_.total_consumed()));
|
||||
}
|
||||
}
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//private:
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typedef asio::detail::consuming_buffers<const_buffer,
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ConstBufferSequence, ConstBufferIterator> buffers_type;
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|
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AsyncWriteStream& stream_;
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buffers_type buffers_;
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int start_;
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WriteHandler handler_;
|
||||
};
|
||||
|
||||
template <typename AsyncWriteStream, typename ConstBufferSequence,
|
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typename ConstBufferIterator, typename CompletionCondition,
|
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typename WriteHandler>
|
||||
inline bool asio_handler_is_continuation(
|
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write_op<AsyncWriteStream, ConstBufferSequence, ConstBufferIterator,
|
||||
CompletionCondition, WriteHandler>* this_handler)
|
||||
{
|
||||
return this_handler->start_ == 0 ? true
|
||||
: asio_handler_cont_helpers::is_continuation(
|
||||
this_handler->handler_);
|
||||
}
|
||||
|
||||
template <typename AsyncWriteStream, typename ConstBufferSequence,
|
||||
typename ConstBufferIterator, typename CompletionCondition,
|
||||
typename WriteHandler>
|
||||
inline void start_write_op(AsyncWriteStream& stream,
|
||||
const ConstBufferSequence& buffers, const ConstBufferIterator&,
|
||||
CompletionCondition& completion_condition, WriteHandler& handler)
|
||||
{
|
||||
detail::write_op<AsyncWriteStream, ConstBufferSequence,
|
||||
ConstBufferIterator, CompletionCondition, WriteHandler>(
|
||||
stream, buffers, completion_condition, handler)(
|
||||
asio::error_code(), 0, 1);
|
||||
}
|
||||
|
||||
template <typename AsyncWriteStream>
|
||||
class initiate_async_write
|
||||
{
|
||||
public:
|
||||
typedef typename AsyncWriteStream::executor_type executor_type;
|
||||
|
||||
explicit initiate_async_write(AsyncWriteStream& stream)
|
||||
: stream_(stream)
|
||||
{
|
||||
}
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||||
|
||||
executor_type get_executor() const noexcept
|
||||
{
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||||
return stream_.get_executor();
|
||||
}
|
||||
|
||||
template <typename WriteHandler, typename ConstBufferSequence,
|
||||
typename CompletionCondition>
|
||||
void operator()(WriteHandler&& handler,
|
||||
const ConstBufferSequence& buffers,
|
||||
CompletionCondition&& completion_cond) const
|
||||
{
|
||||
// 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;
|
||||
|
||||
non_const_lvalue<WriteHandler> handler2(handler);
|
||||
non_const_lvalue<CompletionCondition> completion_cond2(completion_cond);
|
||||
start_write_op(stream_, buffers,
|
||||
asio::buffer_sequence_begin(buffers),
|
||||
completion_cond2.value, handler2.value);
|
||||
}
|
||||
|
||||
private:
|
||||
AsyncWriteStream& stream_;
|
||||
};
|
||||
} // namespace detail
|
||||
|
||||
#if !defined(GENERATING_DOCUMENTATION)
|
||||
|
||||
template <template <typename, typename> class Associator,
|
||||
typename AsyncWriteStream, typename ConstBufferSequence,
|
||||
typename ConstBufferIterator, typename CompletionCondition,
|
||||
typename WriteHandler, typename DefaultCandidate>
|
||||
struct associator<Associator,
|
||||
detail::write_op<AsyncWriteStream, ConstBufferSequence,
|
||||
ConstBufferIterator, CompletionCondition, WriteHandler>,
|
||||
DefaultCandidate>
|
||||
: Associator<WriteHandler, DefaultCandidate>
|
||||
{
|
||||
static typename Associator<WriteHandler, DefaultCandidate>::type get(
|
||||
const detail::write_op<AsyncWriteStream, ConstBufferSequence,
|
||||
ConstBufferIterator, CompletionCondition, WriteHandler>& h) noexcept
|
||||
{
|
||||
return Associator<WriteHandler, DefaultCandidate>::get(h.handler_);
|
||||
}
|
||||
|
||||
static auto get(
|
||||
const detail::write_op<AsyncWriteStream, ConstBufferSequence,
|
||||
ConstBufferIterator, CompletionCondition, WriteHandler>& h,
|
||||
const DefaultCandidate& c) noexcept
|
||||
-> decltype(Associator<WriteHandler, DefaultCandidate>::get(h.handler_, c))
|
||||
{
|
||||
return Associator<WriteHandler, DefaultCandidate>::get(h.handler_, c);
|
||||
}
|
||||
};
|
||||
|
||||
#endif // !defined(GENERATING_DOCUMENTATION)
|
||||
|
||||
#if !defined(ASIO_NO_DYNAMIC_BUFFER_V1)
|
||||
|
||||
namespace detail
|
||||
{
|
||||
template <typename AsyncWriteStream, typename DynamicBuffer_v1,
|
||||
typename CompletionCondition, typename WriteHandler>
|
||||
class write_dynbuf_v1_op
|
||||
{
|
||||
public:
|
||||
template <typename BufferSequence>
|
||||
write_dynbuf_v1_op(AsyncWriteStream& stream,
|
||||
BufferSequence&& buffers,
|
||||
CompletionCondition& completion_condition, WriteHandler& handler)
|
||||
: stream_(stream),
|
||||
buffers_(static_cast<BufferSequence&&>(buffers)),
|
||||
completion_condition_(
|
||||
static_cast<CompletionCondition&&>(completion_condition)),
|
||||
handler_(static_cast<WriteHandler&&>(handler))
|
||||
{
|
||||
}
|
||||
|
||||
write_dynbuf_v1_op(const write_dynbuf_v1_op& other)
|
||||
: stream_(other.stream_),
|
||||
buffers_(other.buffers_),
|
||||
completion_condition_(other.completion_condition_),
|
||||
handler_(other.handler_)
|
||||
{
|
||||
}
|
||||
|
||||
write_dynbuf_v1_op(write_dynbuf_v1_op&& other)
|
||||
: stream_(other.stream_),
|
||||
buffers_(static_cast<DynamicBuffer_v1&&>(other.buffers_)),
|
||||
completion_condition_(
|
||||
static_cast<CompletionCondition&&>(
|
||||
other.completion_condition_)),
|
||||
handler_(static_cast<WriteHandler&&>(other.handler_))
|
||||
{
|
||||
}
|
||||
|
||||
void operator()(const asio::error_code& ec,
|
||||
std::size_t bytes_transferred, int start = 0)
|
||||
{
|
||||
switch (start)
|
||||
{
|
||||
case 1:
|
||||
async_write(stream_, buffers_.data(),
|
||||
static_cast<CompletionCondition&&>(completion_condition_),
|
||||
static_cast<write_dynbuf_v1_op&&>(*this));
|
||||
return; default:
|
||||
buffers_.consume(bytes_transferred);
|
||||
static_cast<WriteHandler&&>(handler_)(ec,
|
||||
static_cast<const std::size_t&>(bytes_transferred));
|
||||
}
|
||||
}
|
||||
|
||||
//private:
|
||||
AsyncWriteStream& stream_;
|
||||
DynamicBuffer_v1 buffers_;
|
||||
CompletionCondition completion_condition_;
|
||||
WriteHandler handler_;
|
||||
};
|
||||
|
||||
template <typename AsyncWriteStream, typename DynamicBuffer_v1,
|
||||
typename CompletionCondition, typename WriteHandler>
|
||||
inline bool asio_handler_is_continuation(
|
||||
write_dynbuf_v1_op<AsyncWriteStream, DynamicBuffer_v1,
|
||||
CompletionCondition, WriteHandler>* this_handler)
|
||||
{
|
||||
return asio_handler_cont_helpers::is_continuation(
|
||||
this_handler->handler_);
|
||||
}
|
||||
|
||||
template <typename AsyncWriteStream>
|
||||
class initiate_async_write_dynbuf_v1
|
||||
{
|
||||
public:
|
||||
typedef typename AsyncWriteStream::executor_type executor_type;
|
||||
|
||||
explicit initiate_async_write_dynbuf_v1(AsyncWriteStream& stream)
|
||||
: stream_(stream)
|
||||
{
|
||||
}
|
||||
|
||||
executor_type get_executor() const noexcept
|
||||
{
|
||||
return stream_.get_executor();
|
||||
}
|
||||
|
||||
template <typename WriteHandler, typename DynamicBuffer_v1,
|
||||
typename CompletionCondition>
|
||||
void operator()(WriteHandler&& handler,
|
||||
DynamicBuffer_v1&& buffers,
|
||||
CompletionCondition&& completion_cond) const
|
||||
{
|
||||
// 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;
|
||||
|
||||
non_const_lvalue<WriteHandler> handler2(handler);
|
||||
non_const_lvalue<CompletionCondition> completion_cond2(completion_cond);
|
||||
write_dynbuf_v1_op<AsyncWriteStream,
|
||||
decay_t<DynamicBuffer_v1>,
|
||||
CompletionCondition, decay_t<WriteHandler>>(
|
||||
stream_, static_cast<DynamicBuffer_v1&&>(buffers),
|
||||
completion_cond2.value, handler2.value)(
|
||||
asio::error_code(), 0, 1);
|
||||
}
|
||||
|
||||
private:
|
||||
AsyncWriteStream& stream_;
|
||||
};
|
||||
} // namespace detail
|
||||
|
||||
#if !defined(GENERATING_DOCUMENTATION)
|
||||
|
||||
template <template <typename, typename> class Associator,
|
||||
typename AsyncWriteStream, typename DynamicBuffer_v1,
|
||||
typename CompletionCondition, typename WriteHandler,
|
||||
typename DefaultCandidate>
|
||||
struct associator<Associator,
|
||||
detail::write_dynbuf_v1_op<AsyncWriteStream,
|
||||
DynamicBuffer_v1, CompletionCondition, WriteHandler>,
|
||||
DefaultCandidate>
|
||||
: Associator<WriteHandler, DefaultCandidate>
|
||||
{
|
||||
static typename Associator<WriteHandler, DefaultCandidate>::type get(
|
||||
const detail::write_dynbuf_v1_op<AsyncWriteStream, DynamicBuffer_v1,
|
||||
CompletionCondition, WriteHandler>& h) noexcept
|
||||
{
|
||||
return Associator<WriteHandler, DefaultCandidate>::get(h.handler_);
|
||||
}
|
||||
|
||||
static auto get(
|
||||
const detail::write_dynbuf_v1_op<AsyncWriteStream,
|
||||
DynamicBuffer_v1, CompletionCondition, WriteHandler>& h,
|
||||
const DefaultCandidate& c) noexcept
|
||||
-> decltype(Associator<WriteHandler, DefaultCandidate>::get(h.handler_, c))
|
||||
{
|
||||
return Associator<WriteHandler, DefaultCandidate>::get(h.handler_, c);
|
||||
}
|
||||
};
|
||||
|
||||
#endif // !defined(GENERATING_DOCUMENTATION)
|
||||
|
||||
#endif // !defined(ASIO_NO_DYNAMIC_BUFFER_V1)
|
||||
|
||||
namespace detail
|
||||
{
|
||||
template <typename AsyncWriteStream, typename DynamicBuffer_v2,
|
||||
typename CompletionCondition, typename WriteHandler>
|
||||
class write_dynbuf_v2_op
|
||||
{
|
||||
public:
|
||||
template <typename BufferSequence>
|
||||
write_dynbuf_v2_op(AsyncWriteStream& stream,
|
||||
BufferSequence&& buffers,
|
||||
CompletionCondition& completion_condition, WriteHandler& handler)
|
||||
: stream_(stream),
|
||||
buffers_(static_cast<BufferSequence&&>(buffers)),
|
||||
completion_condition_(
|
||||
static_cast<CompletionCondition&&>(completion_condition)),
|
||||
handler_(static_cast<WriteHandler&&>(handler))
|
||||
{
|
||||
}
|
||||
|
||||
write_dynbuf_v2_op(const write_dynbuf_v2_op& other)
|
||||
: stream_(other.stream_),
|
||||
buffers_(other.buffers_),
|
||||
completion_condition_(other.completion_condition_),
|
||||
handler_(other.handler_)
|
||||
{
|
||||
}
|
||||
|
||||
write_dynbuf_v2_op(write_dynbuf_v2_op&& other)
|
||||
: stream_(other.stream_),
|
||||
buffers_(static_cast<DynamicBuffer_v2&&>(other.buffers_)),
|
||||
completion_condition_(
|
||||
static_cast<CompletionCondition&&>(
|
||||
other.completion_condition_)),
|
||||
handler_(static_cast<WriteHandler&&>(other.handler_))
|
||||
{
|
||||
}
|
||||
|
||||
void operator()(const asio::error_code& ec,
|
||||
std::size_t bytes_transferred, int start = 0)
|
||||
{
|
||||
switch (start)
|
||||
{
|
||||
case 1:
|
||||
async_write(stream_, buffers_.data(0, buffers_.size()),
|
||||
static_cast<CompletionCondition&&>(completion_condition_),
|
||||
static_cast<write_dynbuf_v2_op&&>(*this));
|
||||
return; default:
|
||||
buffers_.consume(bytes_transferred);
|
||||
static_cast<WriteHandler&&>(handler_)(ec,
|
||||
static_cast<const std::size_t&>(bytes_transferred));
|
||||
}
|
||||
}
|
||||
|
||||
//private:
|
||||
AsyncWriteStream& stream_;
|
||||
DynamicBuffer_v2 buffers_;
|
||||
CompletionCondition completion_condition_;
|
||||
WriteHandler handler_;
|
||||
};
|
||||
|
||||
template <typename AsyncWriteStream, typename DynamicBuffer_v2,
|
||||
typename CompletionCondition, typename WriteHandler>
|
||||
inline bool asio_handler_is_continuation(
|
||||
write_dynbuf_v2_op<AsyncWriteStream, DynamicBuffer_v2,
|
||||
CompletionCondition, WriteHandler>* this_handler)
|
||||
{
|
||||
return asio_handler_cont_helpers::is_continuation(
|
||||
this_handler->handler_);
|
||||
}
|
||||
|
||||
template <typename AsyncWriteStream>
|
||||
class initiate_async_write_dynbuf_v2
|
||||
{
|
||||
public:
|
||||
typedef typename AsyncWriteStream::executor_type executor_type;
|
||||
|
||||
explicit initiate_async_write_dynbuf_v2(AsyncWriteStream& stream)
|
||||
: stream_(stream)
|
||||
{
|
||||
}
|
||||
|
||||
executor_type get_executor() const noexcept
|
||||
{
|
||||
return stream_.get_executor();
|
||||
}
|
||||
|
||||
template <typename WriteHandler, typename DynamicBuffer_v2,
|
||||
typename CompletionCondition>
|
||||
void operator()(WriteHandler&& handler,
|
||||
DynamicBuffer_v2&& buffers,
|
||||
CompletionCondition&& completion_cond) const
|
||||
{
|
||||
// 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;
|
||||
|
||||
non_const_lvalue<WriteHandler> handler2(handler);
|
||||
non_const_lvalue<CompletionCondition> completion_cond2(completion_cond);
|
||||
write_dynbuf_v2_op<AsyncWriteStream, decay_t<DynamicBuffer_v2>,
|
||||
CompletionCondition, decay_t<WriteHandler>>(
|
||||
stream_, static_cast<DynamicBuffer_v2&&>(buffers),
|
||||
completion_cond2.value, handler2.value)(
|
||||
asio::error_code(), 0, 1);
|
||||
}
|
||||
|
||||
private:
|
||||
AsyncWriteStream& stream_;
|
||||
};
|
||||
} // namespace detail
|
||||
|
||||
#if !defined(GENERATING_DOCUMENTATION)
|
||||
|
||||
template <template <typename, typename> class Associator,
|
||||
typename AsyncWriteStream, typename DynamicBuffer_v2,
|
||||
typename CompletionCondition, typename WriteHandler,
|
||||
typename DefaultCandidate>
|
||||
struct associator<Associator,
|
||||
detail::write_dynbuf_v2_op<AsyncWriteStream,
|
||||
DynamicBuffer_v2, CompletionCondition, WriteHandler>,
|
||||
DefaultCandidate>
|
||||
: Associator<WriteHandler, DefaultCandidate>
|
||||
{
|
||||
static typename Associator<WriteHandler, DefaultCandidate>::type get(
|
||||
const detail::write_dynbuf_v2_op<AsyncWriteStream, DynamicBuffer_v2,
|
||||
CompletionCondition, WriteHandler>& h) noexcept
|
||||
{
|
||||
return Associator<WriteHandler, DefaultCandidate>::get(h.handler_);
|
||||
}
|
||||
|
||||
static auto get(
|
||||
const detail::write_dynbuf_v2_op<AsyncWriteStream,
|
||||
DynamicBuffer_v2, CompletionCondition, WriteHandler>& h,
|
||||
const DefaultCandidate& c) noexcept
|
||||
-> decltype(Associator<WriteHandler, DefaultCandidate>::get(h.handler_, c))
|
||||
{
|
||||
return Associator<WriteHandler, DefaultCandidate>::get(h.handler_, c);
|
||||
}
|
||||
};
|
||||
|
||||
#endif // !defined(GENERATING_DOCUMENTATION)
|
||||
|
||||
} // namespace asio
|
||||
|
||||
#include "asio/detail/pop_options.hpp"
|
||||
|
||||
#endif // ASIO_IMPL_WRITE_HPP
|
||||
Reference in New Issue
Block a user