| // |
| // detail/win_iocp_operation.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2015 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 ASIO_DETAIL_WIN_IOCP_OPERATION_HPP |
| #define ASIO_DETAIL_WIN_IOCP_OPERATION_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include "asio/detail/config.hpp" |
| |
| #if defined(ASIO_HAS_IOCP) |
| |
| #include "asio/detail/handler_tracking.hpp" |
| #include "asio/detail/op_queue.hpp" |
| #include "asio/detail/socket_types.hpp" |
| #include "asio/error_code.hpp" |
| |
| #include "asio/detail/push_options.hpp" |
| |
| namespace asio { |
| namespace detail { |
| |
| class win_iocp_io_context; |
| |
| // 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 |
| ASIO_ALSO_INHERIT_TRACKED_HANDLER |
| { |
| public: |
| typedef win_iocp_operation operation_type; |
| |
| void complete(void* owner, const asio::error_code& ec, |
| std::size_t bytes_transferred) |
| { |
| func_(owner, this, ec, bytes_transferred); |
| } |
| |
| void destroy() |
| { |
| func_(0, this, asio::error_code(), 0); |
| } |
| |
| protected: |
| typedef void (*func_type)( |
| void*, win_iocp_operation*, |
| const asio::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_context; |
| win_iocp_operation* next_; |
| func_type func_; |
| long ready_; |
| }; |
| |
| } // namespace detail |
| } // namespace asio |
| |
| #include "asio/detail/pop_options.hpp" |
| |
| #endif // defined(ASIO_HAS_IOCP) |
| |
| #endif // ASIO_DETAIL_WIN_IOCP_OPERATION_HPP |