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Diffstat (limited to 'ext/boost/asio/impl/read.ipp')
| -rw-r--r-- | ext/boost/asio/impl/read.ipp | 349 |
1 files changed, 349 insertions, 0 deletions
diff --git a/ext/boost/asio/impl/read.ipp b/ext/boost/asio/impl/read.ipp new file mode 100644 index 0000000000..453f69761c --- /dev/null +++ b/ext/boost/asio/impl/read.ipp @@ -0,0 +1,349 @@ +// +// read.ipp +// ~~~~~~~~ +// +// Copyright (c) 2003-2008 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_READ_IPP +#define BOOST_ASIO_READ_IPP + +#if defined(_MSC_VER) && (_MSC_VER >= 1200) +# pragma once +#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) + +#include <boost/asio/detail/push_options.hpp> + +#include <boost/asio/detail/push_options.hpp> +#include <algorithm> +#include <boost/asio/detail/pop_options.hpp> + +#include <boost/asio/buffer.hpp> +#include <boost/asio/completion_condition.hpp> +#include <boost/asio/error.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> + +namespace boost { +namespace asio { + +template <typename SyncReadStream, typename MutableBufferSequence, + typename CompletionCondition> +std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers, + CompletionCondition completion_condition, boost::system::error_code& ec) +{ + ec = boost::system::error_code(); + boost::asio::detail::consuming_buffers< + mutable_buffer, MutableBufferSequence> tmp(buffers); + std::size_t total_transferred = 0; + tmp.set_max_size(detail::adapt_completion_condition_result( + completion_condition(ec, total_transferred))); + while (tmp.begin() != tmp.end()) + { + std::size_t bytes_transferred = s.read_some(tmp, ec); + tmp.consume(bytes_transferred); + total_transferred += bytes_transferred; + tmp.set_max_size(detail::adapt_completion_condition_result( + completion_condition(ec, total_transferred))); + } + return total_transferred; +} + +template <typename SyncReadStream, typename MutableBufferSequence> +inline std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers) +{ + boost::system::error_code ec; + std::size_t bytes_transferred = read(s, buffers, transfer_all(), ec); + boost::asio::detail::throw_error(ec); + return bytes_transferred; +} + +template <typename SyncReadStream, typename MutableBufferSequence, + typename CompletionCondition> +inline std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers, + CompletionCondition completion_condition) +{ + boost::system::error_code ec; + std::size_t bytes_transferred = read(s, buffers, completion_condition, ec); + boost::asio::detail::throw_error(ec); + return bytes_transferred; +} + +template <typename SyncReadStream, typename Allocator, + typename CompletionCondition> +std::size_t read(SyncReadStream& s, + boost::asio::basic_streambuf<Allocator>& b, + CompletionCondition completion_condition, boost::system::error_code& ec) +{ + ec = boost::system::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>(512, + 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>(512, + std::min<std::size_t>(max_size, b.max_size() - b.size())); + } + return total_transferred; +} + +template <typename SyncReadStream, typename Allocator> +inline std::size_t read(SyncReadStream& s, + boost::asio::basic_streambuf<Allocator>& b) +{ + boost::system::error_code ec; + std::size_t bytes_transferred = read(s, b, transfer_all(), ec); + boost::asio::detail::throw_error(ec); + return bytes_transferred; +} + +template <typename SyncReadStream, typename Allocator, + typename CompletionCondition> +inline std::size_t read(SyncReadStream& s, + boost::asio::basic_streambuf<Allocator>& b, + CompletionCondition completion_condition) +{ + boost::system::error_code ec; + std::size_t bytes_transferred = read(s, b, completion_condition, ec); + boost::asio::detail::throw_error(ec); + return bytes_transferred; +} + +namespace detail +{ + template <typename AsyncReadStream, typename MutableBufferSequence, + typename CompletionCondition, typename ReadHandler> + class read_handler + { + public: + typedef boost::asio::detail::consuming_buffers< + mutable_buffer, MutableBufferSequence> buffers_type; + + read_handler(AsyncReadStream& stream, const buffers_type& buffers, + CompletionCondition completion_condition, ReadHandler handler) + : stream_(stream), + buffers_(buffers), + total_transferred_(0), + completion_condition_(completion_condition), + handler_(handler) + { + } + + void operator()(const boost::system::error_code& ec, + std::size_t bytes_transferred) + { + total_transferred_ += bytes_transferred; + buffers_.consume(bytes_transferred); + buffers_.set_max_size(detail::adapt_completion_condition_result( + completion_condition_(ec, total_transferred_))); + if (buffers_.begin() == buffers_.end()) + { + handler_(ec, total_transferred_); + } + else + { + stream_.async_read_some(buffers_, *this); + } + } + + //private: + AsyncReadStream& stream_; + buffers_type buffers_; + std::size_t total_transferred_; + CompletionCondition completion_condition_; + ReadHandler handler_; + }; + + template <typename AsyncReadStream, typename MutableBufferSequence, + typename CompletionCondition, typename ReadHandler> + inline void* asio_handler_allocate(std::size_t size, + read_handler<AsyncReadStream, MutableBufferSequence, + CompletionCondition, ReadHandler>* this_handler) + { + return boost_asio_handler_alloc_helpers::allocate( + size, &this_handler->handler_); + } + + template <typename AsyncReadStream, typename MutableBufferSequence, + typename CompletionCondition, typename ReadHandler> + inline void asio_handler_deallocate(void* pointer, std::size_t size, + read_handler<AsyncReadStream, MutableBufferSequence, + CompletionCondition, ReadHandler>* this_handler) + { + boost_asio_handler_alloc_helpers::deallocate( + pointer, size, &this_handler->handler_); + } + + template <typename Function, typename AsyncReadStream, + typename MutableBufferSequence, typename CompletionCondition, + typename ReadHandler> + inline void asio_handler_invoke(const Function& function, + read_handler<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 void async_read(AsyncReadStream& s, const MutableBufferSequence& buffers, + CompletionCondition completion_condition, ReadHandler handler) +{ + boost::asio::detail::consuming_buffers< + mutable_buffer, MutableBufferSequence> tmp(buffers); + + boost::system::error_code ec; + std::size_t total_transferred = 0; + tmp.set_max_size(detail::adapt_completion_condition_result( + completion_condition(ec, total_transferred))); + if (tmp.begin() == tmp.end()) + { + s.get_io_service().post(detail::bind_handler( + handler, ec, total_transferred)); + return; + } + + s.async_read_some(tmp, + detail::read_handler<AsyncReadStream, MutableBufferSequence, + CompletionCondition, ReadHandler>( + s, tmp, completion_condition, handler)); +} + +template <typename AsyncReadStream, typename MutableBufferSequence, + typename ReadHandler> +inline void async_read(AsyncReadStream& s, const MutableBufferSequence& buffers, + ReadHandler handler) +{ + async_read(s, buffers, transfer_all(), handler); +} + +namespace detail +{ + template <typename AsyncReadStream, typename Allocator, + typename CompletionCondition, typename ReadHandler> + class read_streambuf_handler + { + public: + read_streambuf_handler(AsyncReadStream& stream, + basic_streambuf<Allocator>& streambuf, + CompletionCondition completion_condition, ReadHandler handler) + : stream_(stream), + streambuf_(streambuf), + total_transferred_(0), + completion_condition_(completion_condition), + handler_(handler) + { + } + + void operator()(const boost::system::error_code& ec, + std::size_t bytes_transferred) + { + total_transferred_ += bytes_transferred; + streambuf_.commit(bytes_transferred); + 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>(512, + std::min<std::size_t>(max_size, + streambuf_.max_size() - streambuf_.size())); + if (bytes_available == 0) + { + handler_(ec, total_transferred_); + } + else + { + stream_.async_read_some(streambuf_.prepare(bytes_available), *this); + } + } + + //private: + AsyncReadStream& stream_; + boost::asio::basic_streambuf<Allocator>& streambuf_; + std::size_t total_transferred_; + CompletionCondition completion_condition_; + ReadHandler handler_; + }; + + template <typename AsyncReadStream, typename Allocator, + typename CompletionCondition, typename ReadHandler> + inline void* asio_handler_allocate(std::size_t size, + read_streambuf_handler<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_handler<AsyncReadStream, Allocator, + CompletionCondition, ReadHandler>* this_handler) + { + boost_asio_handler_alloc_helpers::deallocate( + pointer, size, &this_handler->handler_); + } + + template <typename Function, typename AsyncReadStream, + typename Allocator, typename CompletionCondition, typename ReadHandler> + inline void asio_handler_invoke(const Function& function, + read_streambuf_handler<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 void async_read(AsyncReadStream& s, + boost::asio::basic_streambuf<Allocator>& b, + CompletionCondition completion_condition, ReadHandler handler) +{ + boost::system::error_code ec; + 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>(512, + std::min<std::size_t>(max_size, b.max_size() - b.size())); + if (bytes_available == 0) + { + s.get_io_service().post(detail::bind_handler( + handler, ec, total_transferred)); + return; + } + + s.async_read_some(b.prepare(bytes_available), + detail::read_streambuf_handler<AsyncReadStream, Allocator, + CompletionCondition, ReadHandler>( + s, b, completion_condition, handler)); +} + +template <typename AsyncReadStream, typename Allocator, typename ReadHandler> +inline void async_read(AsyncReadStream& s, + boost::asio::basic_streambuf<Allocator>& b, ReadHandler handler) +{ + async_read(s, b, transfer_all(), handler); +} + +} // namespace asio +} // namespace boost + +#include <boost/asio/detail/pop_options.hpp> + +#endif // BOOST_ASIO_READ_IPP |