/Src/Dependencies/Boost/boost/asio/detail/win_iocp_socket_recvfrom_op.hpp
http://hadesmem.googlecode.com/ · C++ Header · 122 lines · 81 code · 22 blank · 19 comment · 3 complexity · d1638edd78859ea39a593eedeb6e2818 MD5 · raw file
- //
- // detail/win_iocp_socket_recvfrom_op.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 BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_RECVFROM_OP_HPP
- #define BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_RECVFROM_OP_HPP
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
- #include <boost/asio/detail/config.hpp>
- #if defined(BOOST_ASIO_HAS_IOCP)
- #include <boost/utility/addressof.hpp>
- #include <boost/asio/detail/bind_handler.hpp>
- #include <boost/asio/detail/buffer_sequence_adapter.hpp>
- #include <boost/asio/detail/fenced_block.hpp>
- #include <boost/asio/detail/handler_alloc_helpers.hpp>
- #include <boost/asio/detail/handler_invoke_helpers.hpp>
- #include <boost/asio/detail/operation.hpp>
- #include <boost/asio/detail/socket_ops.hpp>
- #include <boost/asio/error.hpp>
- #include <boost/asio/detail/push_options.hpp>
- namespace boost {
- namespace asio {
- namespace detail {
- template <typename MutableBufferSequence, typename Endpoint, typename Handler>
- class win_iocp_socket_recvfrom_op : public operation
- {
- public:
- BOOST_ASIO_DEFINE_HANDLER_PTR(win_iocp_socket_recvfrom_op);
- win_iocp_socket_recvfrom_op(Endpoint& endpoint,
- socket_ops::weak_cancel_token_type cancel_token,
- const MutableBufferSequence& buffers, Handler& handler)
- : operation(&win_iocp_socket_recvfrom_op::do_complete),
- endpoint_(endpoint),
- endpoint_size_(static_cast<int>(endpoint.capacity())),
- cancel_token_(cancel_token),
- buffers_(buffers),
- handler_(BOOST_ASIO_MOVE_CAST(Handler)(handler))
- {
- }
- int& endpoint_size()
- {
- return endpoint_size_;
- }
- static void do_complete(io_service_impl* owner, operation* base,
- boost::system::error_code ec, std::size_t bytes_transferred)
- {
- // Take ownership of the operation object.
- win_iocp_socket_recvfrom_op* o(
- static_cast<win_iocp_socket_recvfrom_op*>(base));
- ptr p = { boost::addressof(o->handler_), o, o };
- BOOST_ASIO_HANDLER_COMPLETION((o));
- #if defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
- // Check whether buffers are still valid.
- if (owner)
- {
- buffer_sequence_adapter<boost::asio::mutable_buffer,
- MutableBufferSequence>::validate(o->buffers_);
- }
- #endif // defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
- socket_ops::complete_iocp_recvfrom(o->cancel_token_, ec);
- // Record the size of the endpoint returned by the operation.
- o->endpoint_.resize(o->endpoint_size_);
- // Make a copy of the handler so that the memory can be deallocated before
- // the upcall is made. Even if we're not about to make an upcall, a
- // sub-object of the handler may be the true owner of the memory associated
- // with the handler. Consequently, a local copy of the handler is required
- // to ensure that any owning sub-object remains valid until after we have
- // deallocated the memory here.
- detail::binder2<Handler, boost::system::error_code, std::size_t>
- handler(o->handler_, ec, bytes_transferred);
- p.h = boost::addressof(handler.handler_);
- p.reset();
- // Make the upcall if required.
- if (owner)
- {
- boost::asio::detail::fenced_block b;
- BOOST_ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, handler.arg2_));
- boost_asio_handler_invoke_helpers::invoke(handler, handler.handler_);
- BOOST_ASIO_HANDLER_INVOCATION_END;
- }
- }
- private:
- Endpoint& endpoint_;
- int endpoint_size_;
- socket_ops::weak_cancel_token_type cancel_token_;
- MutableBufferSequence buffers_;
- Handler handler_;
- };
- } // namespace detail
- } // namespace asio
- } // namespace boost
- #include <boost/asio/detail/pop_options.hpp>
- #endif // defined(BOOST_ASIO_HAS_IOCP)
- #endif // BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_RECVFROM_OP_HPP