| // |
| // impl/write_at.hpp |
| // ~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2015 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_AT_HPP |
| #define ASIO_IMPL_WRITE_AT_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #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/detail/push_options.hpp" |
| |
| namespace asio { |
| |
| template <typename SyncRandomAccessWriteDevice, typename ConstBufferSequence, |
| typename CompletionCondition> |
| std::size_t write_at(SyncRandomAccessWriteDevice& d, |
| uint64_t offset, 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 = d.write_some_at( |
| offset + total_transferred, 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 SyncRandomAccessWriteDevice, typename ConstBufferSequence> |
| inline std::size_t write_at(SyncRandomAccessWriteDevice& d, |
| uint64_t offset, const ConstBufferSequence& buffers) |
| { |
| asio::error_code ec; |
| std::size_t bytes_transferred = write_at( |
| d, offset, buffers, transfer_all(), ec); |
| asio::detail::throw_error(ec, "write_at"); |
| return bytes_transferred; |
| } |
| |
| template <typename SyncRandomAccessWriteDevice, typename ConstBufferSequence> |
| inline std::size_t write_at(SyncRandomAccessWriteDevice& d, |
| uint64_t offset, const ConstBufferSequence& buffers, |
| asio::error_code& ec) |
| { |
| return write_at(d, offset, buffers, transfer_all(), ec); |
| } |
| |
| template <typename SyncRandomAccessWriteDevice, typename ConstBufferSequence, |
| typename CompletionCondition> |
| inline std::size_t write_at(SyncRandomAccessWriteDevice& d, |
| uint64_t offset, const ConstBufferSequence& buffers, |
| CompletionCondition completion_condition) |
| { |
| asio::error_code ec; |
| std::size_t bytes_transferred = write_at( |
| d, offset, buffers, completion_condition, ec); |
| asio::detail::throw_error(ec, "write_at"); |
| return bytes_transferred; |
| } |
| |
| #if !defined(ASIO_NO_IOSTREAM) |
| |
| template <typename SyncRandomAccessWriteDevice, typename Allocator, |
| typename CompletionCondition> |
| std::size_t write_at(SyncRandomAccessWriteDevice& d, |
| uint64_t offset, asio::basic_streambuf<Allocator>& b, |
| CompletionCondition completion_condition, asio::error_code& ec) |
| { |
| std::size_t bytes_transferred = write_at( |
| d, offset, b.data(), completion_condition, ec); |
| b.consume(bytes_transferred); |
| return bytes_transferred; |
| } |
| |
| template <typename SyncRandomAccessWriteDevice, typename Allocator> |
| inline std::size_t write_at(SyncRandomAccessWriteDevice& d, |
| uint64_t offset, asio::basic_streambuf<Allocator>& b) |
| { |
| asio::error_code ec; |
| std::size_t bytes_transferred = write_at(d, offset, b, transfer_all(), ec); |
| asio::detail::throw_error(ec, "write_at"); |
| return bytes_transferred; |
| } |
| |
| template <typename SyncRandomAccessWriteDevice, typename Allocator> |
| inline std::size_t write_at(SyncRandomAccessWriteDevice& d, |
| uint64_t offset, asio::basic_streambuf<Allocator>& b, |
| asio::error_code& ec) |
| { |
| return write_at(d, offset, b, transfer_all(), ec); |
| } |
| |
| template <typename SyncRandomAccessWriteDevice, typename Allocator, |
| typename CompletionCondition> |
| inline std::size_t write_at(SyncRandomAccessWriteDevice& d, |
| uint64_t offset, asio::basic_streambuf<Allocator>& b, |
| CompletionCondition completion_condition) |
| { |
| asio::error_code ec; |
| std::size_t bytes_transferred = write_at( |
| d, offset, b, completion_condition, ec); |
| asio::detail::throw_error(ec, "write_at"); |
| return bytes_transferred; |
| } |
| |
| #endif // !defined(ASIO_NO_IOSTREAM) |
| |
| namespace detail |
| { |
| template <typename AsyncRandomAccessWriteDevice, typename ConstBufferSequence, |
| typename CompletionCondition, typename WriteHandler> |
| class write_at_op |
| : detail::base_from_completion_cond<CompletionCondition> |
| { |
| public: |
| write_at_op(AsyncRandomAccessWriteDevice& device, |
| uint64_t offset, const ConstBufferSequence& buffers, |
| CompletionCondition completion_condition, WriteHandler& handler) |
| : detail::base_from_completion_cond< |
| CompletionCondition>(completion_condition), |
| device_(device), |
| offset_(offset), |
| buffers_(buffers), |
| start_(0), |
| total_transferred_(0), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(handler)) |
| { |
| } |
| |
| #if defined(ASIO_HAS_MOVE) |
| write_at_op(const write_at_op& other) |
| : detail::base_from_completion_cond<CompletionCondition>(other), |
| device_(other.device_), |
| offset_(other.offset_), |
| buffers_(other.buffers_), |
| start_(other.start_), |
| total_transferred_(other.total_transferred_), |
| handler_(other.handler_) |
| { |
| } |
| |
| write_at_op(write_at_op&& other) |
| : detail::base_from_completion_cond<CompletionCondition>(other), |
| device_(other.device_), |
| offset_(other.offset_), |
| buffers_(other.buffers_), |
| start_(other.start_), |
| total_transferred_(other.total_transferred_), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(other.handler_)) |
| { |
| } |
| #endif // defined(ASIO_HAS_MOVE) |
| |
| void operator()(const asio::error_code& ec, |
| std::size_t bytes_transferred, int start = 0) |
| { |
| switch (start_ = start) |
| { |
| case 1: |
| buffers_.prepare(this->check_for_completion(ec, total_transferred_)); |
| for (;;) |
| { |
| device_.async_write_some_at( |
| offset_ + total_transferred_, buffers_, |
| ASIO_MOVE_CAST(write_at_op)(*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: |
| AsyncRandomAccessWriteDevice& device_; |
| uint64_t offset_; |
| asio::detail::consuming_buffers< |
| const_buffer, ConstBufferSequence> buffers_; |
| int start_; |
| std::size_t total_transferred_; |
| WriteHandler handler_; |
| }; |
| |
| template <typename AsyncRandomAccessWriteDevice, |
| typename CompletionCondition, typename WriteHandler> |
| class write_at_op<AsyncRandomAccessWriteDevice, |
| asio::mutable_buffers_1, CompletionCondition, WriteHandler> |
| : detail::base_from_completion_cond<CompletionCondition> |
| { |
| public: |
| write_at_op(AsyncRandomAccessWriteDevice& device, |
| uint64_t offset, const asio::mutable_buffers_1& buffers, |
| CompletionCondition completion_condition, |
| WriteHandler& handler) |
| : detail::base_from_completion_cond< |
| CompletionCondition>(completion_condition), |
| device_(device), |
| offset_(offset), |
| buffer_(buffers), |
| start_(0), |
| total_transferred_(0), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(handler)) |
| { |
| } |
| |
| #if defined(ASIO_HAS_MOVE) |
| write_at_op(const write_at_op& other) |
| : detail::base_from_completion_cond<CompletionCondition>(other), |
| device_(other.device_), |
| offset_(other.offset_), |
| buffer_(other.buffer_), |
| start_(other.start_), |
| total_transferred_(other.total_transferred_), |
| handler_(other.handler_) |
| { |
| } |
| |
| write_at_op(write_at_op&& other) |
| : detail::base_from_completion_cond<CompletionCondition>(other), |
| device_(other.device_), |
| offset_(other.offset_), |
| buffer_(other.buffer_), |
| start_(other.start_), |
| total_transferred_(other.total_transferred_), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(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 n = 0; |
| switch (start_ = start) |
| { |
| case 1: |
| n = this->check_for_completion(ec, total_transferred_); |
| for (;;) |
| { |
| device_.async_write_some_at(offset_ + total_transferred_, |
| asio::buffer(buffer_ + total_transferred_, n), |
| ASIO_MOVE_CAST(write_at_op)(*this)); |
| return; default: |
| total_transferred_ += bytes_transferred; |
| if ((!ec && bytes_transferred == 0) |
| || (n = this->check_for_completion(ec, total_transferred_)) == 0 |
| || total_transferred_ == buffer_.size()) |
| break; |
| } |
| |
| handler_(ec, static_cast<const std::size_t&>(total_transferred_)); |
| } |
| } |
| |
| //private: |
| AsyncRandomAccessWriteDevice& device_; |
| uint64_t offset_; |
| asio::mutable_buffer buffer_; |
| int start_; |
| std::size_t total_transferred_; |
| WriteHandler handler_; |
| }; |
| |
| template <typename AsyncRandomAccessWriteDevice, |
| typename CompletionCondition, typename WriteHandler> |
| class write_at_op<AsyncRandomAccessWriteDevice, asio::const_buffers_1, |
| CompletionCondition, WriteHandler> |
| : detail::base_from_completion_cond<CompletionCondition> |
| { |
| public: |
| write_at_op(AsyncRandomAccessWriteDevice& device, |
| uint64_t offset, const asio::const_buffers_1& buffers, |
| CompletionCondition completion_condition, |
| WriteHandler& handler) |
| : detail::base_from_completion_cond< |
| CompletionCondition>(completion_condition), |
| device_(device), |
| offset_(offset), |
| buffer_(buffers), |
| start_(0), |
| total_transferred_(0), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(handler)) |
| { |
| } |
| |
| #if defined(ASIO_HAS_MOVE) |
| write_at_op(const write_at_op& other) |
| : detail::base_from_completion_cond<CompletionCondition>(other), |
| device_(other.device_), |
| offset_(other.offset_), |
| buffer_(other.buffer_), |
| start_(other.start_), |
| total_transferred_(other.total_transferred_), |
| handler_(other.handler_) |
| { |
| } |
| |
| write_at_op(write_at_op&& other) |
| : detail::base_from_completion_cond<CompletionCondition>(other), |
| device_(other.device_), |
| offset_(other.offset_), |
| buffer_(other.buffer_), |
| start_(other.start_), |
| total_transferred_(other.total_transferred_), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(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 n = 0; |
| switch (start_ = start) |
| { |
| case 1: |
| n = this->check_for_completion(ec, total_transferred_); |
| for (;;) |
| { |
| device_.async_write_some_at(offset_ + total_transferred_, |
| asio::buffer(buffer_ + total_transferred_, n), |
| ASIO_MOVE_CAST(write_at_op)(*this)); |
| return; default: |
| total_transferred_ += bytes_transferred; |
| if ((!ec && bytes_transferred == 0) |
| || (n = this->check_for_completion(ec, total_transferred_)) == 0 |
| || total_transferred_ == buffer_.size()) |
| break; |
| } |
| |
| handler_(ec, static_cast<const std::size_t&>(total_transferred_)); |
| } |
| } |
| |
| //private: |
| AsyncRandomAccessWriteDevice& device_; |
| uint64_t offset_; |
| asio::const_buffer buffer_; |
| int start_; |
| std::size_t total_transferred_; |
| WriteHandler handler_; |
| }; |
| |
| template <typename AsyncRandomAccessWriteDevice, typename Elem, |
| typename CompletionCondition, typename WriteHandler> |
| class write_at_op<AsyncRandomAccessWriteDevice, boost::array<Elem, 2>, |
| CompletionCondition, WriteHandler> |
| : detail::base_from_completion_cond<CompletionCondition> |
| { |
| public: |
| write_at_op(AsyncRandomAccessWriteDevice& device, |
| uint64_t offset, const boost::array<Elem, 2>& buffers, |
| CompletionCondition completion_condition, WriteHandler& handler) |
| : detail::base_from_completion_cond< |
| CompletionCondition>(completion_condition), |
| device_(device), |
| offset_(offset), |
| buffers_(buffers), |
| start_(0), |
| total_transferred_(0), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(handler)) |
| { |
| } |
| |
| #if defined(ASIO_HAS_MOVE) |
| write_at_op(const write_at_op& other) |
| : detail::base_from_completion_cond<CompletionCondition>(other), |
| device_(other.device_), |
| offset_(other.offset_), |
| buffers_(other.buffers_), |
| start_(other.start_), |
| total_transferred_(other.total_transferred_), |
| handler_(other.handler_) |
| { |
| } |
| |
| write_at_op(write_at_op&& other) |
| : detail::base_from_completion_cond<CompletionCondition>(other), |
| device_(other.device_), |
| offset_(other.offset_), |
| buffers_(other.buffers_), |
| start_(other.start_), |
| total_transferred_(other.total_transferred_), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(other.handler_)) |
| { |
| } |
| #endif // defined(ASIO_HAS_MOVE) |
| |
| void operator()(const asio::error_code& ec, |
| std::size_t bytes_transferred, int start = 0) |
| { |
| typename asio::detail::dependent_type<Elem, |
| boost::array<asio::const_buffer, 2> >::type bufs = {{ |
| asio::const_buffer(buffers_[0]), |
| asio::const_buffer(buffers_[1]) }}; |
| std::size_t buffer_size0 = bufs[0].size(); |
| std::size_t buffer_size1 = bufs[1].size(); |
| std::size_t n = 0; |
| switch (start_ = start) |
| { |
| case 1: |
| n = this->check_for_completion(ec, total_transferred_); |
| for (;;) |
| { |
| bufs[0] = asio::buffer(bufs[0] + total_transferred_, n); |
| bufs[1] = asio::buffer( |
| bufs[1] + (total_transferred_ < buffer_size0 |
| ? 0 : total_transferred_ - buffer_size0), |
| n - bufs[0].size()); |
| device_.async_write_some_at(offset_ + total_transferred_, |
| bufs, ASIO_MOVE_CAST(write_at_op)(*this)); |
| return; default: |
| total_transferred_ += bytes_transferred; |
| if ((!ec && bytes_transferred == 0) |
| || (n = this->check_for_completion(ec, total_transferred_)) == 0 |
| || total_transferred_ == buffer_size0 + buffer_size1) |
| break; |
| } |
| |
| handler_(ec, static_cast<const std::size_t&>(total_transferred_)); |
| } |
| } |
| |
| //private: |
| AsyncRandomAccessWriteDevice& device_; |
| uint64_t offset_; |
| boost::array<Elem, 2> buffers_; |
| int start_; |
| std::size_t total_transferred_; |
| WriteHandler handler_; |
| }; |
| |
| #if defined(ASIO_HAS_STD_ARRAY) |
| |
| template <typename AsyncRandomAccessWriteDevice, typename Elem, |
| typename CompletionCondition, typename WriteHandler> |
| class write_at_op<AsyncRandomAccessWriteDevice, std::array<Elem, 2>, |
| CompletionCondition, WriteHandler> |
| : detail::base_from_completion_cond<CompletionCondition> |
| { |
| public: |
| write_at_op(AsyncRandomAccessWriteDevice& device, |
| uint64_t offset, const std::array<Elem, 2>& buffers, |
| CompletionCondition completion_condition, WriteHandler& handler) |
| : detail::base_from_completion_cond< |
| CompletionCondition>(completion_condition), |
| device_(device), |
| offset_(offset), |
| buffers_(buffers), |
| start_(0), |
| total_transferred_(0), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(handler)) |
| { |
| } |
| |
| #if defined(ASIO_HAS_MOVE) |
| write_at_op(const write_at_op& other) |
| : detail::base_from_completion_cond<CompletionCondition>(other), |
| device_(other.device_), |
| offset_(other.offset_), |
| buffers_(other.buffers_), |
| start_(other.start_), |
| total_transferred_(other.total_transferred_), |
| handler_(other.handler_) |
| { |
| } |
| |
| write_at_op(write_at_op&& other) |
| : detail::base_from_completion_cond<CompletionCondition>(other), |
| device_(other.device_), |
| offset_(other.offset_), |
| buffers_(other.buffers_), |
| start_(other.start_), |
| total_transferred_(other.total_transferred_), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(other.handler_)) |
| { |
| } |
| #endif // defined(ASIO_HAS_MOVE) |
| |
| void operator()(const asio::error_code& ec, |
| std::size_t bytes_transferred, int start = 0) |
| { |
| typename asio::detail::dependent_type<Elem, |
| std::array<asio::const_buffer, 2> >::type bufs = {{ |
| asio::const_buffer(buffers_[0]), |
| asio::const_buffer(buffers_[1]) }}; |
| std::size_t buffer_size0 = bufs[0].size(); |
| std::size_t buffer_size1 = bufs[1].size(); |
| std::size_t n = 0; |
| switch (start_ = start) |
| { |
| case 1: |
| n = this->check_for_completion(ec, total_transferred_); |
| for (;;) |
| { |
| bufs[0] = asio::buffer(bufs[0] + total_transferred_, n); |
| bufs[1] = asio::buffer( |
| bufs[1] + (total_transferred_ < buffer_size0 |
| ? 0 : total_transferred_ - buffer_size0), |
| n - bufs[0].size()); |
| device_.async_write_some_at(offset_ + total_transferred_, |
| bufs, ASIO_MOVE_CAST(write_at_op)(*this)); |
| return; default: |
| total_transferred_ += bytes_transferred; |
| if ((!ec && bytes_transferred == 0) |
| || (n = this->check_for_completion(ec, total_transferred_)) == 0 |
| || total_transferred_ == buffer_size0 + buffer_size1) |
| break; |
| } |
| |
| handler_(ec, static_cast<const std::size_t&>(total_transferred_)); |
| } |
| } |
| |
| //private: |
| AsyncRandomAccessWriteDevice& device_; |
| uint64_t offset_; |
| std::array<Elem, 2> buffers_; |
| int start_; |
| std::size_t total_transferred_; |
| WriteHandler handler_; |
| }; |
| |
| #endif // defined(ASIO_HAS_STD_ARRAY) |
| |
| template <typename AsyncRandomAccessWriteDevice, typename ConstBufferSequence, |
| typename CompletionCondition, typename WriteHandler> |
| inline void* asio_handler_allocate(std::size_t size, |
| write_at_op<AsyncRandomAccessWriteDevice, ConstBufferSequence, |
| CompletionCondition, WriteHandler>* this_handler) |
| { |
| return asio_handler_alloc_helpers::allocate( |
| size, this_handler->handler_); |
| } |
| |
| template <typename AsyncRandomAccessWriteDevice, typename ConstBufferSequence, |
| typename CompletionCondition, typename WriteHandler> |
| inline void asio_handler_deallocate(void* pointer, std::size_t size, |
| write_at_op<AsyncRandomAccessWriteDevice, ConstBufferSequence, |
| CompletionCondition, WriteHandler>* this_handler) |
| { |
| asio_handler_alloc_helpers::deallocate( |
| pointer, size, this_handler->handler_); |
| } |
| |
| template <typename AsyncRandomAccessWriteDevice, typename ConstBufferSequence, |
| typename CompletionCondition, typename WriteHandler> |
| inline bool asio_handler_is_continuation( |
| write_at_op<AsyncRandomAccessWriteDevice, ConstBufferSequence, |
| CompletionCondition, WriteHandler>* this_handler) |
| { |
| return this_handler->start_ == 0 ? true |
| : asio_handler_cont_helpers::is_continuation( |
| this_handler->handler_); |
| } |
| |
| template <typename Function, typename AsyncRandomAccessWriteDevice, |
| typename ConstBufferSequence, typename CompletionCondition, |
| typename WriteHandler> |
| inline void asio_handler_invoke(Function& function, |
| write_at_op<AsyncRandomAccessWriteDevice, ConstBufferSequence, |
| CompletionCondition, WriteHandler>* this_handler) |
| { |
| asio_handler_invoke_helpers::invoke( |
| function, this_handler->handler_); |
| } |
| |
| template <typename Function, typename AsyncRandomAccessWriteDevice, |
| typename ConstBufferSequence, typename CompletionCondition, |
| typename WriteHandler> |
| inline void asio_handler_invoke(const Function& function, |
| write_at_op<AsyncRandomAccessWriteDevice, ConstBufferSequence, |
| CompletionCondition, WriteHandler>* this_handler) |
| { |
| asio_handler_invoke_helpers::invoke( |
| function, this_handler->handler_); |
| } |
| |
| template <typename AsyncRandomAccessWriteDevice, typename ConstBufferSequence, |
| typename CompletionCondition, typename WriteHandler> |
| inline write_at_op<AsyncRandomAccessWriteDevice, |
| ConstBufferSequence, CompletionCondition, WriteHandler> |
| make_write_at_op(AsyncRandomAccessWriteDevice& d, |
| uint64_t offset, const ConstBufferSequence& buffers, |
| CompletionCondition completion_condition, WriteHandler handler) |
| { |
| return write_at_op<AsyncRandomAccessWriteDevice, |
| ConstBufferSequence, CompletionCondition, WriteHandler>( |
| d, offset, buffers, completion_condition, handler); |
| } |
| } // namespace detail |
| |
| #if !defined(GENERATING_DOCUMENTATION) |
| |
| template <typename AsyncRandomAccessWriteDevice, typename ConstBufferSequence, |
| typename CompletionCondition, typename WriteHandler, typename Allocator> |
| struct associated_allocator< |
| detail::write_at_op<AsyncRandomAccessWriteDevice, |
| ConstBufferSequence, CompletionCondition, WriteHandler>, |
| Allocator> |
| { |
| typedef typename associated_allocator<WriteHandler, Allocator>::type type; |
| |
| static type get( |
| const detail::write_at_op<AsyncRandomAccessWriteDevice, |
| ConstBufferSequence, CompletionCondition, WriteHandler>& h, |
| const Allocator& a = Allocator()) ASIO_NOEXCEPT |
| { |
| return associated_allocator<WriteHandler, Allocator>::get(h.handler_, a); |
| } |
| }; |
| |
| template <typename AsyncRandomAccessWriteDevice, typename ConstBufferSequence, |
| typename CompletionCondition, typename WriteHandler, typename Executor> |
| struct associated_executor< |
| detail::write_at_op<AsyncRandomAccessWriteDevice, |
| ConstBufferSequence, CompletionCondition, WriteHandler>, |
| Executor> |
| { |
| typedef typename associated_executor<WriteHandler, Executor>::type type; |
| |
| static type get( |
| const detail::write_at_op<AsyncRandomAccessWriteDevice, |
| ConstBufferSequence, CompletionCondition, WriteHandler>& h, |
| const Executor& ex = Executor()) ASIO_NOEXCEPT |
| { |
| return associated_executor<WriteHandler, Executor>::get(h.handler_, ex); |
| } |
| }; |
| |
| #endif // !defined(GENERATING_DOCUMENTATION) |
| |
| template <typename AsyncRandomAccessWriteDevice, typename ConstBufferSequence, |
| typename CompletionCondition, typename WriteHandler> |
| inline ASIO_INITFN_RESULT_TYPE(WriteHandler, |
| void (asio::error_code, std::size_t)) |
| async_write_at(AsyncRandomAccessWriteDevice& d, |
| uint64_t offset, const ConstBufferSequence& buffers, |
| CompletionCondition completion_condition, |
| ASIO_MOVE_ARG(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_completion<WriteHandler, |
| void (asio::error_code, std::size_t)> init(handler); |
| |
| detail::write_at_op<AsyncRandomAccessWriteDevice, ConstBufferSequence, |
| CompletionCondition, ASIO_HANDLER_TYPE( |
| WriteHandler, void (asio::error_code, std::size_t))>( |
| d, offset, buffers, completion_condition, init.completion_handler)( |
| asio::error_code(), 0, 1); |
| |
| return init.result.get(); |
| } |
| |
| template <typename AsyncRandomAccessWriteDevice, typename ConstBufferSequence, |
| typename WriteHandler> |
| inline ASIO_INITFN_RESULT_TYPE(WriteHandler, |
| void (asio::error_code, std::size_t)) |
| async_write_at(AsyncRandomAccessWriteDevice& d, |
| uint64_t offset, const ConstBufferSequence& buffers, |
| ASIO_MOVE_ARG(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_completion<WriteHandler, |
| void (asio::error_code, std::size_t)> init(handler); |
| |
| detail::write_at_op<AsyncRandomAccessWriteDevice, ConstBufferSequence, |
| detail::transfer_all_t, ASIO_HANDLER_TYPE( |
| WriteHandler, void (asio::error_code, std::size_t))>( |
| d, offset, buffers, transfer_all(), init.completion_handler)( |
| asio::error_code(), 0, 1); |
| |
| return init.result.get(); |
| } |
| |
| #if !defined(ASIO_NO_IOSTREAM) |
| |
| namespace detail |
| { |
| template <typename Allocator, typename WriteHandler> |
| class write_at_streambuf_op |
| { |
| public: |
| write_at_streambuf_op( |
| asio::basic_streambuf<Allocator>& streambuf, |
| WriteHandler& handler) |
| : streambuf_(streambuf), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(handler)) |
| { |
| } |
| |
| #if defined(ASIO_HAS_MOVE) |
| write_at_streambuf_op(const write_at_streambuf_op& other) |
| : streambuf_(other.streambuf_), |
| handler_(other.handler_) |
| { |
| } |
| |
| write_at_streambuf_op(write_at_streambuf_op&& other) |
| : streambuf_(other.streambuf_), |
| handler_(ASIO_MOVE_CAST(WriteHandler)(other.handler_)) |
| { |
| } |
| #endif // defined(ASIO_HAS_MOVE) |
| |
| 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 Allocator, typename WriteHandler> |
| inline void* asio_handler_allocate(std::size_t size, |
| write_at_streambuf_op<Allocator, WriteHandler>* this_handler) |
| { |
| return asio_handler_alloc_helpers::allocate( |
| size, this_handler->handler_); |
| } |
| |
| template <typename Allocator, typename WriteHandler> |
| inline void asio_handler_deallocate(void* pointer, std::size_t size, |
| write_at_streambuf_op<Allocator, WriteHandler>* this_handler) |
| { |
| asio_handler_alloc_helpers::deallocate( |
| pointer, size, this_handler->handler_); |
| } |
| |
| template <typename Allocator, typename WriteHandler> |
| inline bool asio_handler_is_continuation( |
| write_at_streambuf_op<Allocator, WriteHandler>* this_handler) |
| { |
| return asio_handler_cont_helpers::is_continuation( |
| this_handler->handler_); |
| } |
| |
| template <typename Function, typename Allocator, typename WriteHandler> |
| inline void asio_handler_invoke(Function& function, |
| write_at_streambuf_op<Allocator, WriteHandler>* this_handler) |
| { |
| asio_handler_invoke_helpers::invoke( |
| function, this_handler->handler_); |
| } |
| |
| template <typename Function, typename Allocator, typename WriteHandler> |
| inline void asio_handler_invoke(const Function& function, |
| write_at_streambuf_op<Allocator, WriteHandler>* this_handler) |
| { |
| asio_handler_invoke_helpers::invoke( |
| function, this_handler->handler_); |
| } |
| |
| template <typename Allocator, typename WriteHandler> |
| inline write_at_streambuf_op<Allocator, WriteHandler> |
| make_write_at_streambuf_op( |
| asio::basic_streambuf<Allocator>& b, WriteHandler handler) |
| { |
| return write_at_streambuf_op<Allocator, WriteHandler>(b, handler); |
| } |
| } // namespace detail |
| |
| #if !defined(GENERATING_DOCUMENTATION) |
| |
| template <typename Allocator, typename WriteHandler, typename Allocator1> |
| struct associated_allocator< |
| detail::write_at_streambuf_op<Allocator, WriteHandler>, |
| Allocator1> |
| { |
| typedef typename associated_allocator<WriteHandler, Allocator1>::type type; |
| |
| static type get( |
| const detail::write_at_streambuf_op<Allocator, WriteHandler>& h, |
| const Allocator1& a = Allocator1()) ASIO_NOEXCEPT |
| { |
| return associated_allocator<WriteHandler, Allocator1>::get(h.handler_, a); |
| } |
| }; |
| |
| template <typename Executor, typename WriteHandler, typename Executor1> |
| struct associated_executor< |
| detail::write_at_streambuf_op<Executor, WriteHandler>, |
| Executor1> |
| { |
| typedef typename associated_executor<WriteHandler, Executor1>::type type; |
| |
| static type get( |
| const detail::write_at_streambuf_op<Executor, WriteHandler>& h, |
| const Executor1& ex = Executor1()) ASIO_NOEXCEPT |
| { |
| return associated_executor<WriteHandler, Executor1>::get(h.handler_, ex); |
| } |
| }; |
| |
| #endif // !defined(GENERATING_DOCUMENTATION) |
| |
| template <typename AsyncRandomAccessWriteDevice, typename Allocator, |
| typename CompletionCondition, typename WriteHandler> |
| inline ASIO_INITFN_RESULT_TYPE(WriteHandler, |
| void (asio::error_code, std::size_t)) |
| async_write_at(AsyncRandomAccessWriteDevice& d, |
| uint64_t offset, asio::basic_streambuf<Allocator>& b, |
| CompletionCondition completion_condition, |
| ASIO_MOVE_ARG(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_completion<WriteHandler, |
| void (asio::error_code, std::size_t)> init(handler); |
| |
| async_write_at(d, offset, b.data(), completion_condition, |
| detail::write_at_streambuf_op<Allocator, ASIO_HANDLER_TYPE( |
| WriteHandler, void (asio::error_code, std::size_t))>( |
| b, init.completion_handler)); |
| |
| return init.result.get(); |
| } |
| |
| template <typename AsyncRandomAccessWriteDevice, typename Allocator, |
| typename WriteHandler> |
| inline ASIO_INITFN_RESULT_TYPE(WriteHandler, |
| void (asio::error_code, std::size_t)) |
| async_write_at(AsyncRandomAccessWriteDevice& d, |
| uint64_t offset, asio::basic_streambuf<Allocator>& b, |
| ASIO_MOVE_ARG(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_completion<WriteHandler, |
| void (asio::error_code, std::size_t)> init(handler); |
| |
| async_write_at(d, offset, b.data(), transfer_all(), |
| detail::write_at_streambuf_op<Allocator, ASIO_HANDLER_TYPE( |
| WriteHandler, void (asio::error_code, std::size_t))>( |
| b, init.completion_handler)); |
| |
| return init.result.get(); |
| } |
| |
| #endif // !defined(ASIO_NO_IOSTREAM) |
| |
| } // namespace asio |
| |
| #include "asio/detail/pop_options.hpp" |
| |
| #endif // ASIO_IMPL_WRITE_AT_HPP |
