| // |
| // impl/read.hpp |
| // ~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
| // |
| // Distributed under the Boost Software License, Version 1.0. (See accompanying |
| // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| // |
| |
| #ifndef ASIO_IMPL_READ_HPP |
| #define ASIO_IMPL_READ_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include <algorithm> |
| #include "asio/associated_allocator.hpp" |
| #include "asio/associated_executor.hpp" |
| #include "asio/buffer.hpp" |
| #include "asio/completion_condition.hpp" |
| #include "asio/detail/array_fwd.hpp" |
| #include "asio/detail/base_from_completion_cond.hpp" |
| #include "asio/detail/bind_handler.hpp" |
| #include "asio/detail/consuming_buffers.hpp" |
| #include "asio/detail/dependent_type.hpp" |
| #include "asio/detail/handler_alloc_helpers.hpp" |
| #include "asio/detail/handler_cont_helpers.hpp" |
| #include "asio/detail/handler_invoke_helpers.hpp" |
| #include "asio/detail/handler_type_requirements.hpp" |
| #include "asio/detail/throw_error.hpp" |
| #include "asio/error.hpp" |
| |
| #include "asio/detail/push_options.hpp" |
| |
| namespace asio { |
| |
| namespace detail |
| { |
| template <typename SyncReadStream, typename MutableBufferSequence, |
| typename MutableBufferIterator, typename CompletionCondition> |
| std::size_t read_buffer_sequence(SyncReadStream& s, |
| const MutableBufferSequence& buffers, const MutableBufferIterator&, |
| CompletionCondition completion_condition, asio::error_code& ec) |
| { |
| ec = asio::error_code(); |
| asio::detail::consuming_buffers<mutable_buffer, |
| MutableBufferSequence, MutableBufferIterator> tmp(buffers); |
| while (!tmp.empty()) |
| { |
| if (std::size_t max_size = detail::adapt_completion_condition_result( |
| completion_condition(ec, tmp.total_consumed()))) |
| tmp.consume(s.read_some(tmp.prepare(max_size), ec)); |
| else |
| break; |
| } |
| return tmp.total_consumed();; |
| } |
| } // namespace detail |
| |
| template <typename SyncReadStream, typename MutableBufferSequence, |
| typename CompletionCondition> |
| std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers, |
| CompletionCondition completion_condition, asio::error_code& ec, |
| typename enable_if< |
| is_mutable_buffer_sequence<MutableBufferSequence>::value |
| >::type*) |
| { |
| return detail::read_buffer_sequence(s, buffers, |
| asio::buffer_sequence_begin(buffers), completion_condition, ec); |
| } |
| |
| template <typename SyncReadStream, typename MutableBufferSequence> |
| inline std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers, |
| typename enable_if< |
| is_mutable_buffer_sequence<MutableBufferSequence>::value |
| >::type*) |
| { |
| asio::error_code ec; |
| std::size_t bytes_transferred = read(s, buffers, transfer_all(), ec); |
| asio::detail::throw_error(ec, "read"); |
| return bytes_transferred; |
| } |
| |
| template <typename SyncReadStream, typename MutableBufferSequence> |
| inline std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers, |
| asio::error_code& ec, |
| typename enable_if< |
| is_mutable_buffer_sequence<MutableBufferSequence>::value |
| >::type*) |
| { |
| return read(s, buffers, transfer_all(), ec); |
| } |
| |
| template <typename SyncReadStream, typename MutableBufferSequence, |
| typename CompletionCondition> |
| inline std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers, |
| CompletionCondition completion_condition, |
| typename enable_if< |
| is_mutable_buffer_sequence<MutableBufferSequence>::value |
| >::type*) |
| { |
| asio::error_code ec; |
| std::size_t bytes_transferred = read(s, buffers, completion_condition, ec); |
| asio::detail::throw_error(ec, "read"); |
| return bytes_transferred; |
| } |
| |
| template <typename SyncReadStream, typename DynamicBuffer, |
| typename CompletionCondition> |
| std::size_t read(SyncReadStream& s, |
| ASIO_MOVE_ARG(DynamicBuffer) buffers, |
| CompletionCondition completion_condition, asio::error_code& ec, |
| typename enable_if< |
| is_dynamic_buffer<DynamicBuffer>::value |
| >::type*) |
| { |
| typename decay<DynamicBuffer>::type b( |
| ASIO_MOVE_CAST(DynamicBuffer)(buffers)); |
| |
| ec = asio::error_code(); |
| std::size_t total_transferred = 0; |
| std::size_t max_size = detail::adapt_completion_condition_result( |
| completion_condition(ec, total_transferred)); |
| std::size_t bytes_available = std::min<std::size_t>( |
| std::max<std::size_t>(512, b.capacity() - b.size()), |
| std::min<std::size_t>(max_size, b.max_size() - b.size())); |
| while (bytes_available > 0) |
| { |
| std::size_t bytes_transferred = s.read_some(b.prepare(bytes_available), ec); |
| b.commit(bytes_transferred); |
| total_transferred += bytes_transferred; |
| max_size = detail::adapt_completion_condition_result( |
| completion_condition(ec, total_transferred)); |
| bytes_available = std::min<std::size_t>( |
| std::max<std::size_t>(512, b.capacity() - b.size()), |
| std::min<std::size_t>(max_size, b.max_size() - b.size())); |
| } |
| return total_transferred; |
| } |
| |
| template <typename SyncReadStream, typename DynamicBuffer> |
| inline std::size_t read(SyncReadStream& s, |
| ASIO_MOVE_ARG(DynamicBuffer) buffers, |
| typename enable_if< |
| is_dynamic_buffer<DynamicBuffer>::value |
| >::type*) |
| { |
| asio::error_code ec; |
| std::size_t bytes_transferred = read(s, |
| ASIO_MOVE_CAST(DynamicBuffer)(buffers), transfer_all(), ec); |
| asio::detail::throw_error(ec, "read"); |
| return bytes_transferred; |
| } |
| |
| template <typename SyncReadStream, typename DynamicBuffer> |
| inline std::size_t read(SyncReadStream& s, |
| ASIO_MOVE_ARG(DynamicBuffer) buffers, |
| asio::error_code& ec, |
| typename enable_if< |
| is_dynamic_buffer<DynamicBuffer>::value |
| >::type*) |
| { |
| return read(s, ASIO_MOVE_CAST(DynamicBuffer)(buffers), |
| transfer_all(), ec); |
| } |
| |
| template <typename SyncReadStream, typename DynamicBuffer, |
| typename CompletionCondition> |
| inline std::size_t read(SyncReadStream& s, |
| ASIO_MOVE_ARG(DynamicBuffer) buffers, |
| CompletionCondition completion_condition, |
| typename enable_if< |
| is_dynamic_buffer<DynamicBuffer>::value |
| >::type*) |
| { |
| asio::error_code ec; |
| std::size_t bytes_transferred = read(s, |
| ASIO_MOVE_CAST(DynamicBuffer)(buffers), |
| completion_condition, ec); |
| asio::detail::throw_error(ec, "read"); |
| return bytes_transferred; |
| } |
| |
| #if !defined(ASIO_NO_EXTENSIONS) |
| #if !defined(ASIO_NO_IOSTREAM) |
| |
| template <typename SyncReadStream, typename Allocator, |
| typename CompletionCondition> |
| inline std::size_t read(SyncReadStream& s, |
| asio::basic_streambuf<Allocator>& b, |
| CompletionCondition completion_condition, asio::error_code& ec) |
| { |
| return read(s, basic_streambuf_ref<Allocator>(b), completion_condition, ec); |
| } |
| |
| template <typename SyncReadStream, typename Allocator> |
| inline std::size_t read(SyncReadStream& s, |
| asio::basic_streambuf<Allocator>& b) |
| { |
| return read(s, basic_streambuf_ref<Allocator>(b)); |
| } |
| |
| template <typename SyncReadStream, typename Allocator> |
| inline std::size_t read(SyncReadStream& s, |
| asio::basic_streambuf<Allocator>& b, |
| asio::error_code& ec) |
| { |
| return read(s, basic_streambuf_ref<Allocator>(b), ec); |
| } |
| |
| template <typename SyncReadStream, typename Allocator, |
| typename CompletionCondition> |
| inline std::size_t read(SyncReadStream& s, |
| asio::basic_streambuf<Allocator>& b, |
| CompletionCondition completion_condition) |
| { |
| return read(s, basic_streambuf_ref<Allocator>(b), completion_condition); |
| } |
| |
| #endif // !defined(ASIO_NO_IOSTREAM) |
| #endif // !defined(ASIO_NO_EXTENSIONS) |
| |
| namespace detail |
| { |
| template <typename AsyncReadStream, typename MutableBufferSequence, |
| typename MutableBufferIterator, typename CompletionCondition, |
| typename ReadHandler> |
| class read_op |
| : detail::base_from_completion_cond<CompletionCondition> |
| { |
| public: |
| read_op(AsyncReadStream& stream, const MutableBufferSequence& buffers, |
| CompletionCondition completion_condition, ReadHandler& handler) |
| : detail::base_from_completion_cond< |
| CompletionCondition>(completion_condition), |
| stream_(stream), |
| buffers_(buffers), |
| start_(0), |
| handler_(ASIO_MOVE_CAST(ReadHandler)(handler)) |
| { |
| } |
| |
| #if defined(ASIO_HAS_MOVE) |
| read_op(const read_op& other) |
| : detail::base_from_completion_cond<CompletionCondition>(other), |
| stream_(other.stream_), |
| buffers_(other.buffers_), |
| start_(other.start_), |
| handler_(other.handler_) |
| { |
| } |
| |
| read_op(read_op&& other) |
| : detail::base_from_completion_cond<CompletionCondition>(other), |
| stream_(other.stream_), |
| buffers_(other.buffers_), |
| start_(other.start_), |
| handler_(ASIO_MOVE_CAST(ReadHandler)(other.handler_)) |
| { |
| } |
| #endif // defined(ASIO_HAS_MOVE) |
| |
| void operator()(const asio::error_code& ec, |
| std::size_t bytes_transferred, int start = 0) |
| { |
| std::size_t max_size; |
| switch (start_ = start) |
| { |
| case 1: |
| max_size = this->check_for_completion(ec, buffers_.total_consumed()); |
| do |
| { |
| stream_.async_read_some(buffers_.prepare(max_size), |
| ASIO_MOVE_CAST(read_op)(*this)); |
| return; default: |
| buffers_.consume(bytes_transferred); |
| if ((!ec && bytes_transferred == 0) || buffers_.empty()) |
| break; |
| max_size = this->check_for_completion(ec, buffers_.total_consumed()); |
| } while (max_size > 0); |
| |
| handler_(ec, buffers_.total_consumed()); |
| } |
| } |
| |
| //private: |
| AsyncReadStream& stream_; |
| asio::detail::consuming_buffers<mutable_buffer, |
| MutableBufferSequence, MutableBufferIterator> buffers_; |
| int start_; |
| ReadHandler handler_; |
| }; |
| |
| template <typename AsyncReadStream, typename MutableBufferSequence, |
| typename MutableBufferIterator, typename CompletionCondition, |
| typename ReadHandler> |
| inline void* asio_handler_allocate(std::size_t size, |
| read_op<AsyncReadStream, MutableBufferSequence, MutableBufferIterator, |
| CompletionCondition, ReadHandler>* this_handler) |
| { |
| return asio_handler_alloc_helpers::allocate( |
| size, this_handler->handler_); |
| } |
| |
| template <typename AsyncReadStream, typename MutableBufferSequence, |
| typename MutableBufferIterator, typename CompletionCondition, |
| typename ReadHandler> |
| inline void asio_handler_deallocate(void* pointer, std::size_t size, |
| read_op<AsyncReadStream, MutableBufferSequence, MutableBufferIterator, |
| CompletionCondition, ReadHandler>* this_handler) |
| { |
| asio_handler_alloc_helpers::deallocate( |
| pointer, size, this_handler->handler_); |
| } |
| |
| template <typename AsyncReadStream, typename MutableBufferSequence, |
| typename MutableBufferIterator, typename CompletionCondition, |
| typename ReadHandler> |
| inline bool asio_handler_is_continuation( |
| read_op<AsyncReadStream, MutableBufferSequence, MutableBufferIterator, |
| CompletionCondition, ReadHandler>* this_handler) |
| { |
| return this_handler->start_ == 0 ? true |
| : asio_handler_cont_helpers::is_continuation( |
| this_handler->handler_); |
| } |
| |
| template <typename Function, typename AsyncReadStream, |
| typename MutableBufferSequence, typename MutableBufferIterator, |
| typename CompletionCondition, typename ReadHandler> |
| inline void asio_handler_invoke(Function& function, |
| read_op<AsyncReadStream, MutableBufferSequence, MutableBufferIterator, |
| CompletionCondition, ReadHandler>* this_handler) |
| { |
| asio_handler_invoke_helpers::invoke( |
| function, this_handler->handler_); |
| } |
| |
| template <typename Function, typename AsyncReadStream, |
| typename MutableBufferSequence, typename MutableBufferIterator, |
| typename CompletionCondition, typename ReadHandler> |
| inline void asio_handler_invoke(const Function& function, |
| read_op<AsyncReadStream, MutableBufferSequence, MutableBufferIterator, |
| CompletionCondition, ReadHandler>* this_handler) |
| { |
| asio_handler_invoke_helpers::invoke( |
| function, this_handler->handler_); |
| } |
| |
| template <typename AsyncReadStream, typename MutableBufferSequence, |
| typename MutableBufferIterator, typename CompletionCondition, |
| typename ReadHandler> |
| inline void start_read_buffer_sequence_op(AsyncReadStream& stream, |
| const MutableBufferSequence& buffers, const MutableBufferIterator&, |
| CompletionCondition completion_condition, ReadHandler& handler) |
| { |
| detail::read_op<AsyncReadStream, MutableBufferSequence, |
| MutableBufferIterator, CompletionCondition, ReadHandler>( |
| stream, buffers, completion_condition, handler)( |
| asio::error_code(), 0, 1); |
| } |
| } // namespace detail |
| |
| #if !defined(GENERATING_DOCUMENTATION) |
| |
| template <typename AsyncReadStream, typename MutableBufferSequence, |
| typename MutableBufferIterator, typename CompletionCondition, |
| typename ReadHandler, typename Allocator> |
| struct associated_allocator< |
| detail::read_op<AsyncReadStream, MutableBufferSequence, |
| MutableBufferIterator, CompletionCondition, ReadHandler>, |
| Allocator> |
| { |
| typedef typename associated_allocator<ReadHandler, Allocator>::type type; |
| |
| static type get( |
| const detail::read_op<AsyncReadStream, MutableBufferSequence, |
| MutableBufferIterator, CompletionCondition, ReadHandler>& h, |
| const Allocator& a = Allocator()) ASIO_NOEXCEPT |
| { |
| return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a); |
| } |
| }; |
| |
| template <typename AsyncReadStream, typename MutableBufferSequence, |
| typename MutableBufferIterator, typename CompletionCondition, |
| typename ReadHandler, typename Executor> |
| struct associated_executor< |
| detail::read_op<AsyncReadStream, MutableBufferSequence, |
| MutableBufferIterator, CompletionCondition, ReadHandler>, |
| Executor> |
| { |
| typedef typename associated_executor<ReadHandler, Executor>::type type; |
| |
| static type get( |
| const detail::read_op<AsyncReadStream, MutableBufferSequence, |
| MutableBufferIterator, CompletionCondition, ReadHandler>& h, |
| const Executor& ex = Executor()) ASIO_NOEXCEPT |
| { |
| return associated_executor<ReadHandler, Executor>::get(h.handler_, ex); |
| } |
| }; |
| |
| #endif // !defined(GENERATING_DOCUMENTATION) |
| |
| template <typename AsyncReadStream, typename MutableBufferSequence, |
| typename CompletionCondition, typename ReadHandler> |
| inline ASIO_INITFN_RESULT_TYPE(ReadHandler, |
| void (asio::error_code, std::size_t)) |
| async_read(AsyncReadStream& s, const MutableBufferSequence& buffers, |
| CompletionCondition completion_condition, |
| ASIO_MOVE_ARG(ReadHandler) handler, |
| typename enable_if< |
| is_mutable_buffer_sequence<MutableBufferSequence>::value |
| >::type*) |
| { |
| // If you get an error on the following line it means that your handler does |
| // not meet the documented type requirements for a ReadHandler. |
| ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check; |
| |
| async_completion<ReadHandler, |
| void (asio::error_code, std::size_t)> init(handler); |
| |
| detail::start_read_buffer_sequence_op(s, buffers, |
| asio::buffer_sequence_begin(buffers), completion_condition, |
| init.completion_handler); |
| |
| return init.result.get(); |
| } |
| |
| template <typename AsyncReadStream, typename MutableBufferSequence, |
| typename ReadHandler> |
| inline ASIO_INITFN_RESULT_TYPE(ReadHandler, |
| void (asio::error_code, std::size_t)) |
| async_read(AsyncReadStream& s, const MutableBufferSequence& buffers, |
| ASIO_MOVE_ARG(ReadHandler) handler, |
| typename enable_if< |
| is_mutable_buffer_sequence<MutableBufferSequence>::value |
| >::type*) |
| { |
| // If you get an error on the following line it means that your handler does |
| // not meet the documented type requirements for a ReadHandler. |
| ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check; |
| |
| async_completion<ReadHandler, |
| void (asio::error_code, std::size_t)> init(handler); |
| |
| detail::start_read_buffer_sequence_op(s, buffers, |
| asio::buffer_sequence_begin(buffers), transfer_all(), |
| init.completion_handler); |
| |
| return init.result.get(); |
| } |
| |
| namespace detail |
| { |
| template <typename AsyncReadStream, typename DynamicBuffer, |
| typename CompletionCondition, typename ReadHandler> |
| class read_dynbuf_op |
| : detail::base_from_completion_cond<CompletionCondition> |
| { |
| public: |
| template <typename BufferSequence> |
| read_dynbuf_op(AsyncReadStream& stream, |
| ASIO_MOVE_ARG(BufferSequence) buffers, |
| CompletionCondition completion_condition, ReadHandler& handler) |
| : detail::base_from_completion_cond< |
| CompletionCondition>(completion_condition), |
| stream_(stream), |
| buffers_(ASIO_MOVE_CAST(BufferSequence)(buffers)), |
| start_(0), |
| total_transferred_(0), |
| handler_(ASIO_MOVE_CAST(ReadHandler)(handler)) |
| { |
| } |
| |
| #if defined(ASIO_HAS_MOVE) |
| read_dynbuf_op(const read_dynbuf_op& other) |
| : detail::base_from_completion_cond<CompletionCondition>(other), |
| stream_(other.stream_), |
| buffers_(other.buffers_), |
| start_(other.start_), |
| total_transferred_(other.total_transferred_), |
| handler_(other.handler_) |
| { |
| } |
| |
| read_dynbuf_op(read_dynbuf_op&& other) |
| : detail::base_from_completion_cond<CompletionCondition>(other), |
| stream_(other.stream_), |
| buffers_(ASIO_MOVE_CAST(DynamicBuffer)(other.buffers_)), |
| start_(other.start_), |
| total_transferred_(other.total_transferred_), |
| handler_(ASIO_MOVE_CAST(ReadHandler)(other.handler_)) |
| { |
| } |
| #endif // defined(ASIO_HAS_MOVE) |
| |
| void operator()(const asio::error_code& ec, |
| std::size_t bytes_transferred, int start = 0) |
| { |
| std::size_t max_size, bytes_available; |
| switch (start_ = start) |
| { |
| case 1: |
| max_size = this->check_for_completion(ec, total_transferred_); |
| bytes_available = std::min<std::size_t>( |
| std::max<std::size_t>(512, |
| buffers_.capacity() - buffers_.size()), |
| std::min<std::size_t>(max_size, |
| buffers_.max_size() - buffers_.size())); |
| for (;;) |
| { |
| stream_.async_read_some(buffers_.prepare(bytes_available), |
| ASIO_MOVE_CAST(read_dynbuf_op)(*this)); |
| return; default: |
| total_transferred_ += bytes_transferred; |
| buffers_.commit(bytes_transferred); |
| max_size = this->check_for_completion(ec, total_transferred_); |
| bytes_available = std::min<std::size_t>( |
| std::max<std::size_t>(512, |
| buffers_.capacity() - buffers_.size()), |
| std::min<std::size_t>(max_size, |
| buffers_.max_size() - buffers_.size())); |
| if ((!ec && bytes_transferred == 0) || bytes_available == 0) |
| break; |
| } |
| |
| handler_(ec, static_cast<const std::size_t&>(total_transferred_)); |
| } |
| } |
| |
| //private: |
| AsyncReadStream& stream_; |
| DynamicBuffer buffers_; |
| int start_; |
| std::size_t total_transferred_; |
| ReadHandler handler_; |
| }; |
| |
| template <typename AsyncReadStream, typename DynamicBuffer, |
| typename CompletionCondition, typename ReadHandler> |
| inline void* asio_handler_allocate(std::size_t size, |
| read_dynbuf_op<AsyncReadStream, DynamicBuffer, |
| CompletionCondition, ReadHandler>* this_handler) |
| { |
| return asio_handler_alloc_helpers::allocate( |
| size, this_handler->handler_); |
| } |
| |
| template <typename AsyncReadStream, typename DynamicBuffer, |
| typename CompletionCondition, typename ReadHandler> |
| inline void asio_handler_deallocate(void* pointer, std::size_t size, |
| read_dynbuf_op<AsyncReadStream, DynamicBuffer, |
| CompletionCondition, ReadHandler>* this_handler) |
| { |
| asio_handler_alloc_helpers::deallocate( |
| pointer, size, this_handler->handler_); |
| } |
| |
| template <typename AsyncReadStream, typename DynamicBuffer, |
| typename CompletionCondition, typename ReadHandler> |
| inline bool asio_handler_is_continuation( |
| read_dynbuf_op<AsyncReadStream, DynamicBuffer, |
| CompletionCondition, ReadHandler>* this_handler) |
| { |
| return this_handler->start_ == 0 ? true |
| : asio_handler_cont_helpers::is_continuation( |
| this_handler->handler_); |
| } |
| |
| template <typename Function, typename AsyncReadStream, |
| typename DynamicBuffer, typename CompletionCondition, |
| typename ReadHandler> |
| inline void asio_handler_invoke(Function& function, |
| read_dynbuf_op<AsyncReadStream, DynamicBuffer, |
| CompletionCondition, ReadHandler>* this_handler) |
| { |
| asio_handler_invoke_helpers::invoke( |
| function, this_handler->handler_); |
| } |
| |
| template <typename Function, typename AsyncReadStream, |
| typename DynamicBuffer, typename CompletionCondition, |
| typename ReadHandler> |
| inline void asio_handler_invoke(const Function& function, |
| read_dynbuf_op<AsyncReadStream, DynamicBuffer, |
| CompletionCondition, ReadHandler>* this_handler) |
| { |
| asio_handler_invoke_helpers::invoke( |
| function, this_handler->handler_); |
| } |
| } // namespace detail |
| |
| #if !defined(GENERATING_DOCUMENTATION) |
| |
| template <typename AsyncReadStream, typename DynamicBuffer, |
| typename CompletionCondition, typename ReadHandler, typename Allocator> |
| struct associated_allocator< |
| detail::read_dynbuf_op<AsyncReadStream, |
| DynamicBuffer, CompletionCondition, ReadHandler>, |
| Allocator> |
| { |
| typedef typename associated_allocator<ReadHandler, Allocator>::type type; |
| |
| static type get( |
| const detail::read_dynbuf_op<AsyncReadStream, |
| DynamicBuffer, CompletionCondition, ReadHandler>& h, |
| const Allocator& a = Allocator()) ASIO_NOEXCEPT |
| { |
| return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a); |
| } |
| }; |
| |
| template <typename AsyncReadStream, typename DynamicBuffer, |
| typename CompletionCondition, typename ReadHandler, typename Executor> |
| struct associated_executor< |
| detail::read_dynbuf_op<AsyncReadStream, |
| DynamicBuffer, CompletionCondition, ReadHandler>, |
| Executor> |
| { |
| typedef typename associated_executor<ReadHandler, Executor>::type type; |
| |
| static type get( |
| const detail::read_dynbuf_op<AsyncReadStream, |
| DynamicBuffer, CompletionCondition, ReadHandler>& h, |
| const Executor& ex = Executor()) ASIO_NOEXCEPT |
| { |
| return associated_executor<ReadHandler, Executor>::get(h.handler_, ex); |
| } |
| }; |
| |
| #endif // !defined(GENERATING_DOCUMENTATION) |
| |
| template <typename AsyncReadStream, |
| typename DynamicBuffer, typename ReadHandler> |
| inline ASIO_INITFN_RESULT_TYPE(ReadHandler, |
| void (asio::error_code, std::size_t)) |
| async_read(AsyncReadStream& s, |
| ASIO_MOVE_ARG(DynamicBuffer) buffers, |
| ASIO_MOVE_ARG(ReadHandler) handler, |
| typename enable_if< |
| is_dynamic_buffer<DynamicBuffer>::value |
| >::type*) |
| { |
| return async_read(s, |
| ASIO_MOVE_CAST(DynamicBuffer)(buffers), |
| transfer_all(), ASIO_MOVE_CAST(ReadHandler)(handler)); |
| } |
| |
| template <typename AsyncReadStream, typename DynamicBuffer, |
| typename CompletionCondition, typename ReadHandler> |
| inline ASIO_INITFN_RESULT_TYPE(ReadHandler, |
| void (asio::error_code, std::size_t)) |
| async_read(AsyncReadStream& s, |
| ASIO_MOVE_ARG(DynamicBuffer) buffers, |
| CompletionCondition completion_condition, |
| ASIO_MOVE_ARG(ReadHandler) handler, |
| typename enable_if< |
| is_dynamic_buffer<DynamicBuffer>::value |
| >::type*) |
| { |
| // If you get an error on the following line it means that your handler does |
| // not meet the documented type requirements for a ReadHandler. |
| ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check; |
| |
| async_completion<ReadHandler, |
| void (asio::error_code, std::size_t)> init(handler); |
| |
| detail::read_dynbuf_op<AsyncReadStream, |
| typename decay<DynamicBuffer>::type, |
| CompletionCondition, ASIO_HANDLER_TYPE( |
| ReadHandler, void (asio::error_code, std::size_t))>( |
| s, ASIO_MOVE_CAST(DynamicBuffer)(buffers), |
| completion_condition, init.completion_handler)( |
| asio::error_code(), 0, 1); |
| |
| return init.result.get(); |
| } |
| |
| #if !defined(ASIO_NO_EXTENSIONS) |
| #if !defined(ASIO_NO_IOSTREAM) |
| |
| template <typename AsyncReadStream, typename Allocator, typename ReadHandler> |
| inline ASIO_INITFN_RESULT_TYPE(ReadHandler, |
| void (asio::error_code, std::size_t)) |
| async_read(AsyncReadStream& s, basic_streambuf<Allocator>& b, |
| ASIO_MOVE_ARG(ReadHandler) handler) |
| { |
| return async_read(s, basic_streambuf_ref<Allocator>(b), |
| ASIO_MOVE_CAST(ReadHandler)(handler)); |
| } |
| |
| template <typename AsyncReadStream, typename Allocator, |
| typename CompletionCondition, typename ReadHandler> |
| inline ASIO_INITFN_RESULT_TYPE(ReadHandler, |
| void (asio::error_code, std::size_t)) |
| async_read(AsyncReadStream& s, basic_streambuf<Allocator>& b, |
| CompletionCondition completion_condition, |
| ASIO_MOVE_ARG(ReadHandler) handler) |
| { |
| return async_read(s, basic_streambuf_ref<Allocator>(b), |
| completion_condition, ASIO_MOVE_CAST(ReadHandler)(handler)); |
| } |
| |
| #endif // !defined(ASIO_NO_IOSTREAM) |
| #endif // !defined(ASIO_NO_EXTENSIONS) |
| |
| } // namespace asio |
| |
| #include "asio/detail/pop_options.hpp" |
| |
| #endif // ASIO_IMPL_READ_HPP |
