| // |
| // detail/win_iocp_handle_read_op.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2010 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
| // Copyright (c) 2008 Rep Invariant Systems, Inc. (info@repinvariant.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_HANDLE_READ_OP_HPP |
| #define BOOST_ASIO_DETAIL_WIN_IOCP_HANDLE_READ_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/asio/error.hpp> |
| #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/push_options.hpp> |
| |
| namespace boost { |
| namespace asio { |
| namespace detail { |
| |
| template <typename MutableBufferSequence, typename Handler> |
| class win_iocp_handle_read_op : public operation |
| { |
| public: |
| BOOST_ASIO_DEFINE_HANDLER_PTR(win_iocp_handle_read_op); |
| |
| win_iocp_handle_read_op(const MutableBufferSequence& buffers, Handler handler) |
| : operation(&win_iocp_handle_read_op::do_complete), |
| buffers_(buffers), |
| handler_(handler) |
| { |
| } |
| |
| 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_handle_read_op* o(static_cast<win_iocp_handle_read_op*>(base)); |
| ptr p = { boost::addressof(o->handler_), o, o }; |
| |
| #if defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING) |
| if (owner) |
| { |
| // Check whether buffers are still valid. |
| buffer_sequence_adapter<boost::asio::mutable_buffer, |
| MutableBufferSequence>::validate(o->buffers_); |
| } |
| #endif // defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING) |
| |
| // Map non-portable errors to their portable counterparts. |
| if (ec.value() == ERROR_HANDLE_EOF) |
| ec = boost::asio::error::eof; |
| |
| // 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_invoke_helpers::invoke(handler, handler.handler_); |
| } |
| } |
| |
| private: |
| 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_HANDLE_READ_OP_HPP |