756 lines
27 KiB
C++
756 lines
27 KiB
C++
//
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// impl/read.hpp
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// ~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2016 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 BOOST_ASIO_IMPL_READ_HPP
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#define BOOST_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 <boost/asio/buffer.hpp>
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#include <boost/asio/completion_condition.hpp>
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#include <boost/asio/detail/array_fwd.hpp>
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#include <boost/asio/detail/base_from_completion_cond.hpp>
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#include <boost/asio/detail/bind_handler.hpp>
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#include <boost/asio/detail/consuming_buffers.hpp>
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#include <boost/asio/detail/dependent_type.hpp>
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#include <boost/asio/detail/handler_alloc_helpers.hpp>
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#include <boost/asio/detail/handler_cont_helpers.hpp>
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#include <boost/asio/detail/handler_invoke_helpers.hpp>
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#include <boost/asio/detail/handler_type_requirements.hpp>
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#include <boost/asio/detail/throw_error.hpp>
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#include <boost/asio/error.hpp>
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#include <boost/asio/detail/push_options.hpp>
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namespace boost {
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namespace asio {
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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, boost::system::error_code& ec)
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{
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ec = boost::system::error_code();
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boost::asio::detail::consuming_buffers<
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mutable_buffer, MutableBufferSequence> tmp(buffers);
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std::size_t total_transferred = 0;
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tmp.prepare(detail::adapt_completion_condition_result(
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completion_condition(ec, total_transferred)));
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while (tmp.begin() != tmp.end())
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{
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std::size_t bytes_transferred = s.read_some(tmp, ec);
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tmp.consume(bytes_transferred);
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total_transferred += bytes_transferred;
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tmp.prepare(detail::adapt_completion_condition_result(
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completion_condition(ec, total_transferred)));
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}
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return total_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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{
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boost::system::error_code ec;
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std::size_t bytes_transferred = read(s, buffers, transfer_all(), ec);
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boost::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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boost::system::error_code& ec)
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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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{
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boost::system::error_code ec;
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std::size_t bytes_transferred = read(s, buffers, completion_condition, ec);
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boost::asio::detail::throw_error(ec, "read");
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return bytes_transferred;
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}
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#if !defined(BOOST_ASIO_NO_IOSTREAM)
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template <typename SyncReadStream, typename Allocator,
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typename CompletionCondition>
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std::size_t read(SyncReadStream& s,
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boost::asio::basic_streambuf<Allocator>& b,
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CompletionCondition completion_condition, boost::system::error_code& ec)
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{
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ec = boost::system::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 = read_size_helper(b, max_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 = read_size_helper(b, max_size);
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}
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return total_transferred;
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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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boost::asio::basic_streambuf<Allocator>& b)
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{
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boost::system::error_code ec;
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std::size_t bytes_transferred = read(s, b, transfer_all(), ec);
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boost::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 Allocator>
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inline std::size_t read(SyncReadStream& s,
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boost::asio::basic_streambuf<Allocator>& b,
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boost::system::error_code& ec)
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{
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return read(s, b, transfer_all(), 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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boost::asio::basic_streambuf<Allocator>& b,
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CompletionCondition completion_condition)
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{
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boost::system::error_code ec;
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std::size_t bytes_transferred = read(s, b, completion_condition, ec);
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boost::asio::detail::throw_error(ec, "read");
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return bytes_transferred;
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}
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#endif // !defined(BOOST_ASIO_NO_IOSTREAM)
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namespace detail
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{
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template <typename AsyncReadStream, typename MutableBufferSequence,
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typename CompletionCondition, 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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total_transferred_(0),
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handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
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{
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}
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#if defined(BOOST_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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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_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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total_transferred_(other.total_transferred_),
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handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
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{
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}
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#endif // defined(BOOST_ASIO_HAS_MOVE)
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void operator()(const boost::system::error_code& ec,
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std::size_t bytes_transferred, int start = 0)
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{
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switch (start_ = start)
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{
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case 1:
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buffers_.prepare(this->check_for_completion(ec, total_transferred_));
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for (;;)
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{
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stream_.async_read_some(buffers_,
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BOOST_ASIO_MOVE_CAST(read_op)(*this));
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return; default:
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total_transferred_ += bytes_transferred;
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buffers_.consume(bytes_transferred);
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buffers_.prepare(this->check_for_completion(ec, total_transferred_));
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if ((!ec && bytes_transferred == 0)
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|| buffers_.begin() == buffers_.end())
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break;
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}
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handler_(ec, static_cast<const std::size_t&>(total_transferred_));
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}
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}
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//private:
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AsyncReadStream& stream_;
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boost::asio::detail::consuming_buffers<
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mutable_buffer, MutableBufferSequence> buffers_;
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int start_;
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std::size_t total_transferred_;
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ReadHandler handler_;
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};
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template <typename AsyncReadStream,
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typename CompletionCondition, typename ReadHandler>
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class read_op<AsyncReadStream, boost::asio::mutable_buffers_1,
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CompletionCondition, ReadHandler>
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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,
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const boost::asio::mutable_buffers_1& 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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buffer_(buffers),
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start_(0),
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total_transferred_(0),
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handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
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{
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}
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#if defined(BOOST_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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buffer_(other.buffer_),
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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_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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buffer_(other.buffer_),
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start_(other.start_),
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total_transferred_(other.total_transferred_),
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handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
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{
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}
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#endif // defined(BOOST_ASIO_HAS_MOVE)
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void operator()(const boost::system::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 n = 0;
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switch (start_ = start)
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{
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case 1:
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n = this->check_for_completion(ec, total_transferred_);
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for (;;)
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{
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stream_.async_read_some(
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boost::asio::buffer(buffer_ + total_transferred_, n),
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BOOST_ASIO_MOVE_CAST(read_op)(*this));
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return; default:
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total_transferred_ += bytes_transferred;
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if ((!ec && bytes_transferred == 0)
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|| (n = this->check_for_completion(ec, total_transferred_)) == 0
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|| total_transferred_ == boost::asio::buffer_size(buffer_))
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break;
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}
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handler_(ec, static_cast<const std::size_t&>(total_transferred_));
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}
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}
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//private:
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AsyncReadStream& stream_;
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boost::asio::mutable_buffer buffer_;
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int start_;
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std::size_t total_transferred_;
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ReadHandler handler_;
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};
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template <typename AsyncReadStream, typename Elem,
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typename CompletionCondition, typename ReadHandler>
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class read_op<AsyncReadStream, boost::array<Elem, 2>,
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CompletionCondition, ReadHandler>
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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 boost::array<Elem, 2>& 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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total_transferred_(0),
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handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
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{
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}
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#if defined(BOOST_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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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_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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total_transferred_(other.total_transferred_),
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handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
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{
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}
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#endif // defined(BOOST_ASIO_HAS_MOVE)
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void operator()(const boost::system::error_code& ec,
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std::size_t bytes_transferred, int start = 0)
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{
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typename boost::asio::detail::dependent_type<Elem,
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boost::array<boost::asio::mutable_buffer, 2> >::type bufs = {{
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boost::asio::mutable_buffer(buffers_[0]),
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boost::asio::mutable_buffer(buffers_[1]) }};
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std::size_t buffer_size0 = boost::asio::buffer_size(bufs[0]);
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std::size_t buffer_size1 = boost::asio::buffer_size(bufs[1]);
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std::size_t n = 0;
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switch (start_ = start)
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{
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case 1:
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n = this->check_for_completion(ec, total_transferred_);
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for (;;)
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{
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bufs[0] = boost::asio::buffer(bufs[0] + total_transferred_, n);
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bufs[1] = boost::asio::buffer(
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bufs[1] + (total_transferred_ < buffer_size0
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? 0 : total_transferred_ - buffer_size0),
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n - boost::asio::buffer_size(bufs[0]));
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stream_.async_read_some(bufs, BOOST_ASIO_MOVE_CAST(read_op)(*this));
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return; default:
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total_transferred_ += bytes_transferred;
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if ((!ec && bytes_transferred == 0)
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|| (n = this->check_for_completion(ec, total_transferred_)) == 0
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|| total_transferred_ == buffer_size0 + buffer_size1)
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break;
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}
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handler_(ec, static_cast<const std::size_t&>(total_transferred_));
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}
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}
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//private:
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AsyncReadStream& stream_;
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boost::array<Elem, 2> buffers_;
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int start_;
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std::size_t total_transferred_;
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ReadHandler handler_;
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};
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#if defined(BOOST_ASIO_HAS_STD_ARRAY)
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template <typename AsyncReadStream, typename Elem,
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typename CompletionCondition, typename ReadHandler>
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class read_op<AsyncReadStream, std::array<Elem, 2>,
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CompletionCondition, ReadHandler>
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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 std::array<Elem, 2>& 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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total_transferred_(0),
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handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
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{
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}
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#if defined(BOOST_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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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_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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total_transferred_(other.total_transferred_),
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handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
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{
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}
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#endif // defined(BOOST_ASIO_HAS_MOVE)
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void operator()(const boost::system::error_code& ec,
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std::size_t bytes_transferred, int start = 0)
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{
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typename boost::asio::detail::dependent_type<Elem,
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std::array<boost::asio::mutable_buffer, 2> >::type bufs = {{
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boost::asio::mutable_buffer(buffers_[0]),
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boost::asio::mutable_buffer(buffers_[1]) }};
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std::size_t buffer_size0 = boost::asio::buffer_size(bufs[0]);
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std::size_t buffer_size1 = boost::asio::buffer_size(bufs[1]);
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std::size_t n = 0;
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switch (start_ = start)
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{
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case 1:
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n = this->check_for_completion(ec, total_transferred_);
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for (;;)
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{
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bufs[0] = boost::asio::buffer(bufs[0] + total_transferred_, n);
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bufs[1] = boost::asio::buffer(
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bufs[1] + (total_transferred_ < buffer_size0
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? 0 : total_transferred_ - buffer_size0),
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n - boost::asio::buffer_size(bufs[0]));
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stream_.async_read_some(bufs, BOOST_ASIO_MOVE_CAST(read_op)(*this));
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return; default:
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total_transferred_ += bytes_transferred;
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if ((!ec && bytes_transferred == 0)
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|| (n = this->check_for_completion(ec, total_transferred_)) == 0
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|| total_transferred_ == buffer_size0 + buffer_size1)
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break;
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}
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handler_(ec, static_cast<const std::size_t&>(total_transferred_));
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}
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}
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//private:
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AsyncReadStream& stream_;
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std::array<Elem, 2> buffers_;
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int start_;
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std::size_t total_transferred_;
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ReadHandler handler_;
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};
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#endif // defined(BOOST_ASIO_HAS_STD_ARRAY)
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template <typename AsyncReadStream, typename MutableBufferSequence,
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typename CompletionCondition, typename ReadHandler>
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inline void* asio_handler_allocate(std::size_t size,
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read_op<AsyncReadStream, MutableBufferSequence,
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CompletionCondition, ReadHandler>* this_handler)
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{
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return boost_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 CompletionCondition, 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,
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CompletionCondition, ReadHandler>* this_handler)
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{
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boost_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 CompletionCondition, typename ReadHandler>
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inline bool asio_handler_is_continuation(
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read_op<AsyncReadStream, MutableBufferSequence,
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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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: boost_asio_handler_cont_helpers::is_continuation(
|
|
this_handler->handler_);
|
|
}
|
|
|
|
template <typename Function, typename AsyncReadStream,
|
|
typename MutableBufferSequence, typename CompletionCondition,
|
|
typename ReadHandler>
|
|
inline void asio_handler_invoke(Function& function,
|
|
read_op<AsyncReadStream, MutableBufferSequence,
|
|
CompletionCondition, ReadHandler>* this_handler)
|
|
{
|
|
boost_asio_handler_invoke_helpers::invoke(
|
|
function, this_handler->handler_);
|
|
}
|
|
|
|
template <typename Function, typename AsyncReadStream,
|
|
typename MutableBufferSequence, typename CompletionCondition,
|
|
typename ReadHandler>
|
|
inline void asio_handler_invoke(const Function& function,
|
|
read_op<AsyncReadStream, MutableBufferSequence,
|
|
CompletionCondition, ReadHandler>* this_handler)
|
|
{
|
|
boost_asio_handler_invoke_helpers::invoke(
|
|
function, this_handler->handler_);
|
|
}
|
|
} // namespace detail
|
|
|
|
template <typename AsyncReadStream, typename MutableBufferSequence,
|
|
typename CompletionCondition, typename ReadHandler>
|
|
inline BOOST_ASIO_INITFN_RESULT_TYPE(ReadHandler,
|
|
void (boost::system::error_code, std::size_t))
|
|
async_read(AsyncReadStream& s, const MutableBufferSequence& buffers,
|
|
CompletionCondition completion_condition,
|
|
BOOST_ASIO_MOVE_ARG(ReadHandler) handler)
|
|
{
|
|
// If you get an error on the following line it means that your handler does
|
|
// not meet the documented type requirements for a ReadHandler.
|
|
BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
|
|
|
|
detail::async_result_init<
|
|
ReadHandler, void (boost::system::error_code, std::size_t)> init(
|
|
BOOST_ASIO_MOVE_CAST(ReadHandler)(handler));
|
|
|
|
detail::read_op<AsyncReadStream, MutableBufferSequence,
|
|
CompletionCondition, BOOST_ASIO_HANDLER_TYPE(
|
|
ReadHandler, void (boost::system::error_code, std::size_t))>(
|
|
s, buffers, completion_condition, init.handler)(
|
|
boost::system::error_code(), 0, 1);
|
|
|
|
return init.result.get();
|
|
}
|
|
|
|
template <typename AsyncReadStream, typename MutableBufferSequence,
|
|
typename ReadHandler>
|
|
inline BOOST_ASIO_INITFN_RESULT_TYPE(ReadHandler,
|
|
void (boost::system::error_code, std::size_t))
|
|
async_read(AsyncReadStream& s, const MutableBufferSequence& buffers,
|
|
BOOST_ASIO_MOVE_ARG(ReadHandler) handler)
|
|
{
|
|
// If you get an error on the following line it means that your handler does
|
|
// not meet the documented type requirements for a ReadHandler.
|
|
BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
|
|
|
|
detail::async_result_init<
|
|
ReadHandler, void (boost::system::error_code, std::size_t)> init(
|
|
BOOST_ASIO_MOVE_CAST(ReadHandler)(handler));
|
|
|
|
detail::read_op<AsyncReadStream, MutableBufferSequence,
|
|
detail::transfer_all_t, BOOST_ASIO_HANDLER_TYPE(
|
|
ReadHandler, void (boost::system::error_code, std::size_t))>(
|
|
s, buffers, transfer_all(), init.handler)(
|
|
boost::system::error_code(), 0, 1);
|
|
|
|
return init.result.get();
|
|
}
|
|
|
|
#if !defined(BOOST_ASIO_NO_IOSTREAM)
|
|
|
|
namespace detail
|
|
{
|
|
template <typename AsyncReadStream, typename Allocator,
|
|
typename CompletionCondition, typename ReadHandler>
|
|
class read_streambuf_op
|
|
: detail::base_from_completion_cond<CompletionCondition>
|
|
{
|
|
public:
|
|
read_streambuf_op(AsyncReadStream& stream,
|
|
basic_streambuf<Allocator>& streambuf,
|
|
CompletionCondition completion_condition, ReadHandler& handler)
|
|
: detail::base_from_completion_cond<
|
|
CompletionCondition>(completion_condition),
|
|
stream_(stream),
|
|
streambuf_(streambuf),
|
|
start_(0),
|
|
total_transferred_(0),
|
|
handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
|
|
{
|
|
}
|
|
|
|
#if defined(BOOST_ASIO_HAS_MOVE)
|
|
read_streambuf_op(const read_streambuf_op& other)
|
|
: detail::base_from_completion_cond<CompletionCondition>(other),
|
|
stream_(other.stream_),
|
|
streambuf_(other.streambuf_),
|
|
start_(other.start_),
|
|
total_transferred_(other.total_transferred_),
|
|
handler_(other.handler_)
|
|
{
|
|
}
|
|
|
|
read_streambuf_op(read_streambuf_op&& other)
|
|
: detail::base_from_completion_cond<CompletionCondition>(other),
|
|
stream_(other.stream_),
|
|
streambuf_(other.streambuf_),
|
|
start_(other.start_),
|
|
total_transferred_(other.total_transferred_),
|
|
handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
|
|
{
|
|
}
|
|
#endif // defined(BOOST_ASIO_HAS_MOVE)
|
|
|
|
void operator()(const boost::system::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 = read_size_helper(streambuf_, max_size);
|
|
for (;;)
|
|
{
|
|
stream_.async_read_some(streambuf_.prepare(bytes_available),
|
|
BOOST_ASIO_MOVE_CAST(read_streambuf_op)(*this));
|
|
return; default:
|
|
total_transferred_ += bytes_transferred;
|
|
streambuf_.commit(bytes_transferred);
|
|
max_size = this->check_for_completion(ec, total_transferred_);
|
|
bytes_available = read_size_helper(streambuf_, max_size);
|
|
if ((!ec && bytes_transferred == 0) || bytes_available == 0)
|
|
break;
|
|
}
|
|
|
|
handler_(ec, static_cast<const std::size_t&>(total_transferred_));
|
|
}
|
|
}
|
|
|
|
//private:
|
|
AsyncReadStream& stream_;
|
|
boost::asio::basic_streambuf<Allocator>& streambuf_;
|
|
int start_;
|
|
std::size_t total_transferred_;
|
|
ReadHandler handler_;
|
|
};
|
|
|
|
template <typename AsyncReadStream, typename Allocator,
|
|
typename CompletionCondition, typename ReadHandler>
|
|
inline void* asio_handler_allocate(std::size_t size,
|
|
read_streambuf_op<AsyncReadStream, Allocator,
|
|
CompletionCondition, ReadHandler>* this_handler)
|
|
{
|
|
return boost_asio_handler_alloc_helpers::allocate(
|
|
size, this_handler->handler_);
|
|
}
|
|
|
|
template <typename AsyncReadStream, typename Allocator,
|
|
typename CompletionCondition, typename ReadHandler>
|
|
inline void asio_handler_deallocate(void* pointer, std::size_t size,
|
|
read_streambuf_op<AsyncReadStream, Allocator,
|
|
CompletionCondition, ReadHandler>* this_handler)
|
|
{
|
|
boost_asio_handler_alloc_helpers::deallocate(
|
|
pointer, size, this_handler->handler_);
|
|
}
|
|
|
|
template <typename AsyncReadStream, typename Allocator,
|
|
typename CompletionCondition, typename ReadHandler>
|
|
inline bool asio_handler_is_continuation(
|
|
read_streambuf_op<AsyncReadStream, Allocator,
|
|
CompletionCondition, ReadHandler>* this_handler)
|
|
{
|
|
return this_handler->start_ == 0 ? true
|
|
: boost_asio_handler_cont_helpers::is_continuation(
|
|
this_handler->handler_);
|
|
}
|
|
|
|
template <typename Function, typename AsyncReadStream,
|
|
typename Allocator, typename CompletionCondition, typename ReadHandler>
|
|
inline void asio_handler_invoke(Function& function,
|
|
read_streambuf_op<AsyncReadStream, Allocator,
|
|
CompletionCondition, ReadHandler>* this_handler)
|
|
{
|
|
boost_asio_handler_invoke_helpers::invoke(
|
|
function, this_handler->handler_);
|
|
}
|
|
|
|
template <typename Function, typename AsyncReadStream,
|
|
typename Allocator, typename CompletionCondition, typename ReadHandler>
|
|
inline void asio_handler_invoke(const Function& function,
|
|
read_streambuf_op<AsyncReadStream, Allocator,
|
|
CompletionCondition, ReadHandler>* this_handler)
|
|
{
|
|
boost_asio_handler_invoke_helpers::invoke(
|
|
function, this_handler->handler_);
|
|
}
|
|
} // namespace detail
|
|
|
|
template <typename AsyncReadStream, typename Allocator,
|
|
typename CompletionCondition, typename ReadHandler>
|
|
inline BOOST_ASIO_INITFN_RESULT_TYPE(ReadHandler,
|
|
void (boost::system::error_code, std::size_t))
|
|
async_read(AsyncReadStream& s,
|
|
boost::asio::basic_streambuf<Allocator>& b,
|
|
CompletionCondition completion_condition,
|
|
BOOST_ASIO_MOVE_ARG(ReadHandler) handler)
|
|
{
|
|
// If you get an error on the following line it means that your handler does
|
|
// not meet the documented type requirements for a ReadHandler.
|
|
BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
|
|
|
|
detail::async_result_init<
|
|
ReadHandler, void (boost::system::error_code, std::size_t)> init(
|
|
BOOST_ASIO_MOVE_CAST(ReadHandler)(handler));
|
|
|
|
detail::read_streambuf_op<AsyncReadStream, Allocator,
|
|
CompletionCondition, BOOST_ASIO_HANDLER_TYPE(
|
|
ReadHandler, void (boost::system::error_code, std::size_t))>(
|
|
s, b, completion_condition, init.handler)(
|
|
boost::system::error_code(), 0, 1);
|
|
|
|
return init.result.get();
|
|
}
|
|
|
|
template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
|
|
inline BOOST_ASIO_INITFN_RESULT_TYPE(ReadHandler,
|
|
void (boost::system::error_code, std::size_t))
|
|
async_read(AsyncReadStream& s,
|
|
boost::asio::basic_streambuf<Allocator>& b,
|
|
BOOST_ASIO_MOVE_ARG(ReadHandler) handler)
|
|
{
|
|
// If you get an error on the following line it means that your handler does
|
|
// not meet the documented type requirements for a ReadHandler.
|
|
BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
|
|
|
|
detail::async_result_init<
|
|
ReadHandler, void (boost::system::error_code, std::size_t)> init(
|
|
BOOST_ASIO_MOVE_CAST(ReadHandler)(handler));
|
|
|
|
detail::read_streambuf_op<AsyncReadStream, Allocator,
|
|
detail::transfer_all_t, BOOST_ASIO_HANDLER_TYPE(
|
|
ReadHandler, void (boost::system::error_code, std::size_t))>(
|
|
s, b, transfer_all(), init.handler)(
|
|
boost::system::error_code(), 0, 1);
|
|
|
|
return init.result.get();
|
|
}
|
|
|
|
#endif // !defined(BOOST_ASIO_NO_IOSTREAM)
|
|
|
|
} // namespace asio
|
|
} // namespace boost
|
|
|
|
#include <boost/asio/detail/pop_options.hpp>
|
|
|
|
#endif // BOOST_ASIO_IMPL_READ_HPP
|