| // |
| // detail/win_iocp_operation.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_DETAIL_WIN_IOCP_OPERATION_HPP |
| #define BOOST_ASIO_DETAIL_WIN_IOCP_OPERATION_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/detail/op_queue.hpp> |
| #include <boost/asio/detail/win_iocp_io_service_fwd.hpp> |
| #include <boost/system/error_code.hpp> |
| |
| #include <boost/asio/detail/push_options.hpp> |
| |
| namespace boost { |
| namespace asio { |
| namespace detail { |
| |
| // Base class for all operations. A function pointer is used instead of virtual |
| // functions to avoid the associated overhead. |
| class win_iocp_operation |
| : public OVERLAPPED |
| { |
| public: |
| void complete(win_iocp_io_service& owner, |
| const boost::system::error_code& ec = boost::system::error_code(), |
| std::size_t bytes_transferred = 0) |
| { |
| func_(&owner, this, ec, bytes_transferred); |
| } |
| |
| void destroy() |
| { |
| func_(0, this, boost::system::error_code(), 0); |
| } |
| |
| protected: |
| typedef void (*func_type)(win_iocp_io_service*, |
| win_iocp_operation*, boost::system::error_code, std::size_t); |
| |
| win_iocp_operation(func_type func) |
| : next_(0), |
| func_(func) |
| { |
| reset(); |
| } |
| |
| // Prevents deletion through this type. |
| ~win_iocp_operation() |
| { |
| } |
| |
| void reset() |
| { |
| Internal = 0; |
| InternalHigh = 0; |
| Offset = 0; |
| OffsetHigh = 0; |
| hEvent = 0; |
| ready_ = 0; |
| } |
| |
| private: |
| friend class op_queue_access; |
| friend class win_iocp_io_service; |
| win_iocp_operation* next_; |
| func_type func_; |
| long ready_; |
| }; |
| |
| } // 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_OPERATION_HPP |