Swiftdiff options
Diffstat (limited to '3rdParty/Boost/src/boost/asio/impl/write_at.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/asio/impl/write_at.hpp | 419 |
1 files changed, 419 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/asio/impl/write_at.hpp b/3rdParty/Boost/src/boost/asio/impl/write_at.hpp new file mode 100644 index 0000000..aad64ef --- /dev/null +++ b/3rdParty/Boost/src/boost/asio/impl/write_at.hpp @@ -0,0 +1,419 @@ +// +// impl/write_at.hpp +// ~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2010 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 BOOST_ASIO_IMPL_WRITE_AT_HPP +#define BOOST_ASIO_IMPL_WRITE_AT_HPP + +#if defined(_MSC_VER) && (_MSC_VER >= 1200) +# pragma once +#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) + +#include <boost/asio/buffer.hpp> +#include <boost/asio/completion_condition.hpp> +#include <boost/asio/detail/base_from_completion_cond.hpp> +#include <boost/asio/detail/bind_handler.hpp> +#include <boost/asio/detail/consuming_buffers.hpp> +#include <boost/asio/detail/handler_alloc_helpers.hpp> +#include <boost/asio/detail/handler_invoke_helpers.hpp> +#include <boost/asio/detail/throw_error.hpp> + +#include <boost/asio/detail/push_options.hpp> + +namespace boost { +namespace asio { + +template <typename SyncRandomAccessWriteDevice, typename ConstBufferSequence, + typename CompletionCondition> +std::size_t write_at(SyncRandomAccessWriteDevice& d, + boost::uint64_t offset, const ConstBufferSequence& buffers, + CompletionCondition completion_condition, boost::system::error_code& ec) +{ + ec = boost::system::error_code(); + boost::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, + boost::uint64_t offset, const ConstBufferSequence& buffers) +{ + boost::system::error_code ec; + std::size_t bytes_transferred = write_at( + d, offset, buffers, transfer_all(), ec); + boost::asio::detail::throw_error(ec); + return bytes_transferred; +} + +template <typename SyncRandomAccessWriteDevice, typename ConstBufferSequence, + typename CompletionCondition> +inline std::size_t write_at(SyncRandomAccessWriteDevice& d, + boost::uint64_t offset, const ConstBufferSequence& buffers, + CompletionCondition completion_condition) +{ + boost::system::error_code ec; + std::size_t bytes_transferred = write_at( + d, offset, buffers, completion_condition, ec); + boost::asio::detail::throw_error(ec); + return bytes_transferred; +} + +#if !defined(BOOST_NO_IOSTREAM) + +template <typename SyncRandomAccessWriteDevice, typename Allocator, + typename CompletionCondition> +std::size_t write_at(SyncRandomAccessWriteDevice& d, + boost::uint64_t offset, boost::asio::basic_streambuf<Allocator>& b, + CompletionCondition completion_condition, boost::system::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, + boost::uint64_t offset, boost::asio::basic_streambuf<Allocator>& b) +{ + boost::system::error_code ec; + std::size_t bytes_transferred = write_at(d, offset, b, transfer_all(), ec); + boost::asio::detail::throw_error(ec); + return bytes_transferred; +} + +template <typename SyncRandomAccessWriteDevice, typename Allocator, + typename CompletionCondition> +inline std::size_t write_at(SyncRandomAccessWriteDevice& d, + boost::uint64_t offset, boost::asio::basic_streambuf<Allocator>& b, + CompletionCondition completion_condition) +{ + boost::system::error_code ec; + std::size_t bytes_transferred = write_at( + d, offset, b, completion_condition, ec); + boost::asio::detail::throw_error(ec); + return bytes_transferred; +} + +#endif // !defined(BOOST_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, + boost::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), + total_transferred_(0), + handler_(handler) + { + } + + void operator()(const boost::system::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 (;;) + { + device_.async_write_some_at( + offset_ + total_transferred_, 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: + AsyncRandomAccessWriteDevice& device_; + boost::uint64_t offset_; + boost::asio::detail::consuming_buffers< + const_buffer, ConstBufferSequence> buffers_; + std::size_t total_transferred_; + WriteHandler handler_; + }; + + template <typename AsyncRandomAccessWriteDevice, + typename CompletionCondition, typename WriteHandler> + class write_at_op<AsyncRandomAccessWriteDevice, + boost::asio::mutable_buffers_1, CompletionCondition, WriteHandler> + : detail::base_from_completion_cond<CompletionCondition> + { + public: + write_at_op(AsyncRandomAccessWriteDevice& device, + boost::uint64_t offset, const boost::asio::mutable_buffers_1& buffers, + CompletionCondition completion_condition, + WriteHandler handler) + : detail::base_from_completion_cond< + CompletionCondition>(completion_condition), + device_(device), + offset_(offset), + buffer_(buffers), + total_transferred_(0), + handler_(handler) + { + } + + void operator()(const boost::system::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 (;;) + { + device_.async_write_some_at(offset_ + total_transferred_, + boost::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_ == boost::asio::buffer_size(buffer_)) + break; + } + + handler_(ec, static_cast<const std::size_t&>(total_transferred_)); + } + } + + //private: + AsyncRandomAccessWriteDevice& device_; + boost::uint64_t offset_; + boost::asio::mutable_buffer buffer_; + std::size_t total_transferred_; + WriteHandler handler_; + }; + + template <typename AsyncRandomAccessWriteDevice, + typename CompletionCondition, typename WriteHandler> + class write_at_op<AsyncRandomAccessWriteDevice, boost::asio::const_buffers_1, + CompletionCondition, WriteHandler> + : detail::base_from_completion_cond<CompletionCondition> + { + public: + write_at_op(AsyncRandomAccessWriteDevice& device, + boost::uint64_t offset, const boost::asio::const_buffers_1& buffers, + CompletionCondition completion_condition, + WriteHandler handler) + : detail::base_from_completion_cond< + CompletionCondition>(completion_condition), + device_(device), + offset_(offset), + buffer_(buffers), + total_transferred_(0), + handler_(handler) + { + } + + void operator()(const boost::system::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 (;;) + { + device_.async_write_some_at(offset_ + total_transferred_, + boost::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_ == boost::asio::buffer_size(buffer_)) + break; + } + + handler_(ec, static_cast<const std::size_t&>(total_transferred_)); + } + } + + //private: + AsyncRandomAccessWriteDevice& device_; + boost::uint64_t offset_; + boost::asio::const_buffer buffer_; + std::size_t total_transferred_; + WriteHandler handler_; + }; + + 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 boost_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) + { + boost_asio_handler_alloc_helpers::deallocate( + pointer, size, 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) + { + boost_asio_handler_invoke_helpers::invoke( + function, this_handler->handler_); + } +} // namespace detail + +template <typename AsyncRandomAccessWriteDevice, typename ConstBufferSequence, + typename CompletionCondition, typename WriteHandler> +inline void async_write_at(AsyncRandomAccessWriteDevice& d, + boost::uint64_t offset, const ConstBufferSequence& buffers, + CompletionCondition completion_condition, WriteHandler handler) +{ + detail::write_at_op<AsyncRandomAccessWriteDevice, + ConstBufferSequence, CompletionCondition, WriteHandler>( + d, offset, buffers, completion_condition, handler)( + boost::system::error_code(), 0, 1); +} + +template <typename AsyncRandomAccessWriteDevice, typename ConstBufferSequence, + typename WriteHandler> +inline void async_write_at(AsyncRandomAccessWriteDevice& d, + boost::uint64_t offset, const ConstBufferSequence& buffers, + WriteHandler handler) +{ + async_write_at(d, offset, buffers, transfer_all(), handler); +} + +#if !defined(BOOST_NO_IOSTREAM) + +namespace detail +{ + template <typename AsyncRandomAccessWriteDevice, + typename Allocator, typename WriteHandler> + class write_at_streambuf_op + { + public: + write_at_streambuf_op( + boost::asio::basic_streambuf<Allocator>& streambuf, + WriteHandler handler) + : streambuf_(streambuf), + handler_(handler) + { + } + + void operator()(const boost::system::error_code& ec, + const std::size_t bytes_transferred) + { + streambuf_.consume(bytes_transferred); + handler_(ec, bytes_transferred); + } + + //private: + boost::asio::basic_streambuf<Allocator>& streambuf_; + WriteHandler handler_; + }; + + template <typename AsyncRandomAccessWriteDevice, typename Allocator, + typename WriteHandler> + inline void* asio_handler_allocate(std::size_t size, + write_at_streambuf_op<AsyncRandomAccessWriteDevice, + Allocator, WriteHandler>* this_handler) + { + return boost_asio_handler_alloc_helpers::allocate( + size, this_handler->handler_); + } + + template <typename AsyncRandomAccessWriteDevice, typename Allocator, + typename WriteHandler> + inline void asio_handler_deallocate(void* pointer, std::size_t size, + write_at_streambuf_op<AsyncRandomAccessWriteDevice, + Allocator, WriteHandler>* this_handler) + { + boost_asio_handler_alloc_helpers::deallocate( + pointer, size, this_handler->handler_); + } + + template <typename Function, typename AsyncRandomAccessWriteDevice, + typename Allocator, typename WriteHandler> + inline void asio_handler_invoke(const Function& function, + write_at_streambuf_op<AsyncRandomAccessWriteDevice, + Allocator, WriteHandler>* this_handler) + { + boost_asio_handler_invoke_helpers::invoke( + function, this_handler->handler_); + } +} // namespace detail + +template <typename AsyncRandomAccessWriteDevice, typename Allocator, + typename CompletionCondition, typename WriteHandler> +inline void async_write_at(AsyncRandomAccessWriteDevice& d, + boost::uint64_t offset, boost::asio::basic_streambuf<Allocator>& b, + CompletionCondition completion_condition, WriteHandler handler) +{ + async_write_at(d, offset, b.data(), completion_condition, + detail::write_at_streambuf_op< + AsyncRandomAccessWriteDevice, Allocator, WriteHandler>(b, handler)); +} + +template <typename AsyncRandomAccessWriteDevice, typename Allocator, + typename WriteHandler> +inline void async_write_at(AsyncRandomAccessWriteDevice& d, + boost::uint64_t offset, boost::asio::basic_streambuf<Allocator>& b, + WriteHandler handler) +{ + async_write_at(d, offset, b, transfer_all(), handler); +} + +#endif // !defined(BOOST_NO_IOSTREAM) + +} // namespace asio +} // namespace boost + +#include <boost/asio/detail/pop_options.hpp> + +#endif // BOOST_ASIO_IMPL_WRITE_AT_HPP |