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99 lines
2.1 KiB
C++
99 lines
2.1 KiB
C++
//
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// detail/win_iocp_operation.hpp
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef BOOST_ASIO_DETAIL_WIN_IOCP_OPERATION_HPP
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#define BOOST_ASIO_DETAIL_WIN_IOCP_OPERATION_HPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include <boost/asio/detail/config.hpp>
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#if defined(BOOST_ASIO_HAS_IOCP)
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#include <boost/asio/detail/handler_tracking.hpp>
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#include <boost/asio/detail/op_queue.hpp>
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#include <boost/asio/detail/socket_types.hpp>
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#include <boost/system/error_code.hpp>
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#include <boost/asio/detail/push_options.hpp>
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namespace boost {
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namespace asio {
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namespace detail {
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class win_iocp_io_context;
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// Base class for all operations. A function pointer is used instead of virtual
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// functions to avoid the associated overhead.
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class win_iocp_operation
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: public OVERLAPPED
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BOOST_ASIO_ALSO_INHERIT_TRACKED_HANDLER
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{
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public:
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typedef win_iocp_operation operation_type;
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void complete(void* owner, const boost::system::error_code& ec,
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std::size_t bytes_transferred)
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{
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func_(owner, this, ec, bytes_transferred);
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}
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void destroy()
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{
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func_(0, this, boost::system::error_code(), 0);
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}
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protected:
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typedef void (*func_type)(
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void*, win_iocp_operation*,
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const boost::system::error_code&, std::size_t);
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win_iocp_operation(func_type func)
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: next_(0),
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func_(func)
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{
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reset();
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}
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// Prevents deletion through this type.
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~win_iocp_operation()
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{
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}
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void reset()
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{
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Internal = 0;
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InternalHigh = 0;
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Offset = 0;
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OffsetHigh = 0;
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hEvent = 0;
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ready_ = 0;
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}
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private:
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friend class op_queue_access;
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friend class win_iocp_io_context;
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win_iocp_operation* next_;
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func_type func_;
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long ready_;
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};
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} // namespace detail
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} // namespace asio
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} // namespace boost
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#include <boost/asio/detail/pop_options.hpp>
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#endif // defined(BOOST_ASIO_HAS_IOCP)
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#endif // BOOST_ASIO_DETAIL_WIN_IOCP_OPERATION_HPP
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