| // |
| // impl/write.hpp |
| // ~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2011 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_WRITE_HPP |
| #define ASIO_IMPL_WRITE_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include "asio/buffer.hpp" |
| #include "asio/completion_condition.hpp" |
| #include "asio/detail/base_from_completion_cond.hpp" |
| #include "asio/detail/bind_handler.hpp" |
| #include "asio/detail/consuming_buffers.hpp" |
| #include "asio/detail/handler_alloc_helpers.hpp" |
| #include "asio/detail/handler_invoke_helpers.hpp" |
| #include "asio/detail/handler_type_requirements.hpp" |
| #include "asio/detail/throw_error.hpp" |
| |
| #include "asio/detail/push_options.hpp" |
| |
| namespace asio { |
| |
| template <typename SyncWriteStream, typename ConstBufferSequence, |
| typename CompletionCondition> |
| std::size_t write(SyncWriteStream& s, const ConstBufferSequence& buffers, |
| CompletionCondition completion_condition, asio::error_code& ec) |
| { |
| ec = asio::error_code(); |
| asio::detail::consuming_buffers< |
| const_buffer, ConstBufferSequence> tmp(buffers); |
| std::size_t total_transferred = 0; |
| tmp.prepare(detail::adapt_completion_condition_result( |
| completion_condition(ec, total_transferred))); |
| while (tmp.begin() != tmp.end()) |
| { |
| std::size_t bytes_transferred = s.write_some(tmp, ec); |
| tmp.consume(bytes_transferred); |
| total_transferred += bytes_transferred; |
| tmp.prepare(detail::adapt_completion_condition_result( |
| completion_condition(ec, total_transferred))); |
| } |
| return total_transferred; |
| } |
| |
| template <typename SyncWriteStream, typename ConstBufferSequence> |
| inline std::size_t write(SyncWriteStream& s, const ConstBufferSequence& buffers) |
| { |
| asio::error_code ec; |
| std::size_t bytes_transferred = write(s, buffers, transfer_all(), ec); |
| asio::detail::throw_error(ec, "write"); |
| return bytes_transferred; |
| } |
| |
| template <typename SyncWriteStream, typename ConstBufferSequence> |
| inline std::size_t write(SyncWriteStream& s, const ConstBufferSequence& buffers, |
| asio::error_code& ec) |
| { |
| return write(s, buffers, transfer_all(), ec); |
| } |
| |
| template <typename SyncWriteStream, typename ConstBufferSequence, |
| typename CompletionCondition> |
| inline std::size_t write(SyncWriteStream& s, const ConstBufferSequence& buffers, |
| CompletionCondition completion_condition) |
| { |
| asio::error_code ec; |
| std::size_t bytes_transferred = write(s, buffers, completion_condition, ec); |
| asio::detail::throw_error(ec, "write"); |
| return bytes_transferred; |
| } |
| |
| #if !defined(BOOST_NO_IOSTREAM) |
| |
| template <typename SyncWriteStream, typename Allocator, |
| typename CompletionCondition> |
| std::size_t write(SyncWriteStream& s, |
| asio::basic_streambuf<Allocator>& b, |
| CompletionCondition completion_condition, asio::error_code& ec) |
| { |
| std::size_t bytes_transferred = write(s, b.data(), completion_condition, ec); |
| b.consume(bytes_transferred); |
| return bytes_transferred; |
| } |
| |
| template <typename SyncWriteStream, typename Allocator> |
| inline std::size_t write(SyncWriteStream& s, |
| asio::basic_streambuf<Allocator>& b) |
| { |
| asio::error_code ec; |
| std::size_t bytes_transferred = write(s, b, transfer_all(), ec); |
| asio::detail::throw_error(ec, "write"); |
| return bytes_transferred; |
| } |
| |
| template <typename SyncWriteStream, typename Allocator> |
| inline std::size_t write(SyncWriteStream& s, |
| asio::basic_streambuf<Allocator>& b, |
| asio::error_code& ec) |
| { |
| return write(s, b, transfer_all(), ec); |
| } |
| |
| template <typename SyncWriteStream, typename Allocator, |
| typename CompletionCondition> |
| inline std::size_t write(SyncWriteStream& s, |
| asio::basic_streambuf<Allocator>& b, |
| CompletionCondition completion_condition) |
| { |
| asio::error_code ec; |
| std::size_t bytes_transferred = write(s, b, completion_condition, ec); |
| asio::detail::throw_error(ec, "write"); |
| return bytes_transferred; |
| } |
| |
| #endif // !defined(BOOST_NO_IOSTREAM) |
| |
| namespace detail |
| { |
| template <typename AsyncWriteStream, typename ConstBufferSequence, |
| typename CompletionCondition, typename WriteHandler> |
| class write_op |
| : detail::base_from_completion_cond<CompletionCondition> |
| { |
| public: |
| write_op(AsyncWriteStream& stream, const ConstBufferSequence& buffers, |
| CompletionCondition completion_condition, WriteHandler& handler) |
| : detail::base_from_completion_cond< |
| CompletionCondition>(completion_condition), |
| stream_(stream), |
| buffers_(buffers), |
| total_transferred_(0), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(handler)) |
| { |
| } |
| |
| void operator()(const asio::error_code& ec, |
| std::size_t bytes_transferred, int start = 0) |
| { |
| switch (start) |
| { |
| case 1: |
| buffers_.prepare(this->check_for_completion(ec, total_transferred_)); |
| for (;;) |
| { |
| stream_.async_write_some(buffers_, *this); |
| return; default: |
| total_transferred_ += bytes_transferred; |
| buffers_.consume(bytes_transferred); |
| buffers_.prepare(this->check_for_completion(ec, total_transferred_)); |
| if ((!ec && bytes_transferred == 0) |
| || buffers_.begin() == buffers_.end()) |
| break; |
| } |
| |
| handler_(ec, static_cast<const std::size_t&>(total_transferred_)); |
| } |
| } |
| |
| //private: |
| AsyncWriteStream& stream_; |
| asio::detail::consuming_buffers< |
| const_buffer, ConstBufferSequence> buffers_; |
| std::size_t total_transferred_; |
| WriteHandler handler_; |
| }; |
| |
| template <typename AsyncWriteStream, |
| typename CompletionCondition, typename WriteHandler> |
| class write_op<AsyncWriteStream, asio::mutable_buffers_1, |
| CompletionCondition, WriteHandler> |
| : detail::base_from_completion_cond<CompletionCondition> |
| { |
| public: |
| write_op(AsyncWriteStream& stream, |
| const asio::mutable_buffers_1& buffers, |
| CompletionCondition completion_condition, |
| WriteHandler& handler) |
| : detail::base_from_completion_cond< |
| CompletionCondition>(completion_condition), |
| stream_(stream), |
| buffer_(buffers), |
| total_transferred_(0), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(handler)) |
| { |
| } |
| |
| void operator()(const asio::error_code& ec, |
| std::size_t bytes_transferred, int start = 0) |
| { |
| std::size_t n = 0; |
| switch (start) |
| { |
| case 1: |
| n = this->check_for_completion(ec, total_transferred_); |
| for (;;) |
| { |
| stream_.async_write_some(asio::buffer( |
| buffer_ + total_transferred_, n), *this); |
| return; default: |
| total_transferred_ += bytes_transferred; |
| if ((!ec && bytes_transferred == 0) |
| || (n = this->check_for_completion(ec, total_transferred_)) == 0 |
| || total_transferred_ == asio::buffer_size(buffer_)) |
| break; |
| } |
| |
| handler_(ec, static_cast<const std::size_t&>(total_transferred_)); |
| } |
| } |
| |
| //private: |
| AsyncWriteStream& stream_; |
| asio::mutable_buffer buffer_; |
| std::size_t total_transferred_; |
| WriteHandler handler_; |
| }; |
| |
| template <typename AsyncWriteStream, |
| typename CompletionCondition, typename WriteHandler> |
| class write_op<AsyncWriteStream, asio::const_buffers_1, |
| CompletionCondition, WriteHandler> |
| : detail::base_from_completion_cond<CompletionCondition> |
| { |
| public: |
| write_op(AsyncWriteStream& stream, |
| const asio::const_buffers_1& buffers, |
| CompletionCondition completion_condition, |
| WriteHandler& handler) |
| : detail::base_from_completion_cond< |
| CompletionCondition>(completion_condition), |
| stream_(stream), |
| buffer_(buffers), |
| total_transferred_(0), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(handler)) |
| { |
| } |
| |
| void operator()(const asio::error_code& ec, |
| std::size_t bytes_transferred, int start = 0) |
| { |
| std::size_t n = 0; |
| switch (start) |
| { |
| case 1: |
| n = this->check_for_completion(ec, total_transferred_); |
| for (;;) |
| { |
| stream_.async_write_some(asio::buffer( |
| buffer_ + total_transferred_, n), *this); |
| return; default: |
| total_transferred_ += bytes_transferred; |
| if ((!ec && bytes_transferred == 0) |
| || (n = this->check_for_completion(ec, total_transferred_)) == 0 |
| || total_transferred_ == asio::buffer_size(buffer_)) |
| break; |
| } |
| |
| handler_(ec, static_cast<const std::size_t&>(total_transferred_)); |
| } |
| } |
| |
| //private: |
| AsyncWriteStream& stream_; |
| asio::const_buffer buffer_; |
| std::size_t total_transferred_; |
| WriteHandler handler_; |
| }; |
| |
| template <typename AsyncWriteStream, typename ConstBufferSequence, |
| typename CompletionCondition, typename WriteHandler> |
| inline void* asio_handler_allocate(std::size_t size, |
| write_op<AsyncWriteStream, ConstBufferSequence, |
| CompletionCondition, WriteHandler>* this_handler) |
| { |
| return asio_handler_alloc_helpers::allocate( |
| size, this_handler->handler_); |
| } |
| |
| template <typename AsyncWriteStream, typename ConstBufferSequence, |
| typename CompletionCondition, typename WriteHandler> |
| inline void asio_handler_deallocate(void* pointer, std::size_t size, |
| write_op<AsyncWriteStream, ConstBufferSequence, |
| CompletionCondition, WriteHandler>* this_handler) |
| { |
| asio_handler_alloc_helpers::deallocate( |
| pointer, size, this_handler->handler_); |
| } |
| |
| template <typename Function, typename AsyncWriteStream, |
| typename ConstBufferSequence, typename CompletionCondition, |
| typename WriteHandler> |
| inline void asio_handler_invoke(const Function& function, |
| write_op<AsyncWriteStream, ConstBufferSequence, |
| CompletionCondition, WriteHandler>* this_handler) |
| { |
| asio_handler_invoke_helpers::invoke( |
| function, this_handler->handler_); |
| } |
| } // namespace detail |
| |
| template <typename AsyncWriteStream, typename ConstBufferSequence, |
| typename CompletionCondition, typename WriteHandler> |
| inline void async_write(AsyncWriteStream& s, const ConstBufferSequence& buffers, |
| CompletionCondition completion_condition, WriteHandler handler) |
| { |
| // 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; |
| |
| detail::write_op<AsyncWriteStream, ConstBufferSequence, |
| CompletionCondition, WriteHandler>( |
| s, buffers, completion_condition, handler)( |
| asio::error_code(), 0, 1); |
| } |
| |
| template <typename AsyncWriteStream, typename ConstBufferSequence, |
| typename WriteHandler> |
| inline void async_write(AsyncWriteStream& s, const ConstBufferSequence& buffers, |
| WriteHandler handler) |
| { |
| // 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; |
| |
| detail::write_op<AsyncWriteStream, ConstBufferSequence, |
| detail::transfer_all_t, WriteHandler>( |
| s, buffers, transfer_all(), handler)( |
| asio::error_code(), 0, 1); |
| } |
| |
| #if !defined(BOOST_NO_IOSTREAM) |
| |
| namespace detail |
| { |
| template <typename AsyncWriteStream, typename Allocator, |
| typename WriteHandler> |
| class write_streambuf_handler |
| { |
| public: |
| write_streambuf_handler(asio::basic_streambuf<Allocator>& streambuf, |
| WriteHandler& handler) |
| : streambuf_(streambuf), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(handler)) |
| { |
| } |
| |
| void operator()(const asio::error_code& ec, |
| const std::size_t bytes_transferred) |
| { |
| streambuf_.consume(bytes_transferred); |
| handler_(ec, bytes_transferred); |
| } |
| |
| //private: |
| asio::basic_streambuf<Allocator>& streambuf_; |
| WriteHandler handler_; |
| }; |
| |
| template <typename AsyncWriteStream, typename Allocator, |
| typename WriteHandler> |
| inline void* asio_handler_allocate(std::size_t size, |
| write_streambuf_handler<AsyncWriteStream, |
| Allocator, WriteHandler>* this_handler) |
| { |
| return asio_handler_alloc_helpers::allocate( |
| size, this_handler->handler_); |
| } |
| |
| template <typename AsyncWriteStream, typename Allocator, |
| typename WriteHandler> |
| inline void asio_handler_deallocate(void* pointer, std::size_t size, |
| write_streambuf_handler<AsyncWriteStream, |
| Allocator, WriteHandler>* this_handler) |
| { |
| asio_handler_alloc_helpers::deallocate( |
| pointer, size, this_handler->handler_); |
| } |
| |
| template <typename Function, typename AsyncWriteStream, typename Allocator, |
| typename WriteHandler> |
| inline void asio_handler_invoke(const Function& function, |
| write_streambuf_handler<AsyncWriteStream, |
| Allocator, WriteHandler>* this_handler) |
| { |
| asio_handler_invoke_helpers::invoke( |
| function, this_handler->handler_); |
| } |
| } // namespace detail |
| |
| template <typename AsyncWriteStream, typename Allocator, |
| typename CompletionCondition, typename WriteHandler> |
| inline void async_write(AsyncWriteStream& s, |
| asio::basic_streambuf<Allocator>& b, |
| CompletionCondition completion_condition, WriteHandler handler) |
| { |
| // 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; |
| |
| async_write(s, b.data(), completion_condition, |
| detail::write_streambuf_handler< |
| AsyncWriteStream, Allocator, WriteHandler>(b, handler)); |
| } |
| |
| template <typename AsyncWriteStream, typename Allocator, typename WriteHandler> |
| inline void async_write(AsyncWriteStream& s, |
| asio::basic_streambuf<Allocator>& b, WriteHandler handler) |
| { |
| // 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; |
| |
| async_write(s, b.data(), transfer_all(), |
| detail::write_streambuf_handler< |
| AsyncWriteStream, Allocator, WriteHandler>(b, handler)); |
| } |
| |
| #endif // !defined(BOOST_NO_IOSTREAM) |
| |
| } // namespace asio |
| |
| #include "asio/detail/pop_options.hpp" |
| |
| #endif // ASIO_IMPL_WRITE_HPP |