58de70e3c1
git-svn-id: http://libopenmetaverse.googlecode.com/svn/trunk@18 52acb1d6-8a22-11de-b505-999d5b087335
82 lines
2.0 KiB
C++
82 lines
2.0 KiB
C++
//
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// win_iocp_operation.hpp
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// ~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2005 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/push_options.hpp>
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#include <boost/asio/detail/push_options.hpp>
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#include <boost/config.hpp>
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#include <boost/asio/detail/pop_options.hpp>
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// This class is only supported on Win32 (NT4 and later).
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#if defined(BOOST_WINDOWS)
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#if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0400)
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#include <boost/asio/detail/socket_types.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_demuxer_service;
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// Base class for all IOCP operations. A function pointer is used instead of
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// virtual functions to avoid the associated overhead.
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//
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// This class inherits from OVERLAPPED so that we can downcast to get back to
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// the win_iocp_operation pointer from the LPOVERLAPPED out parameter of
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// GetQueuedCompletionStatus.
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struct win_iocp_operation
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: public OVERLAPPED
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{
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typedef void (*func_type)(win_iocp_operation*, DWORD, size_t);
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win_iocp_operation(func_type func)
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: func_(func)
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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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}
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void do_completion(DWORD last_error, size_t bytes_transferred)
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{
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func_(this, last_error, bytes_transferred);
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}
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protected:
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// Prevent deletion through this type.
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~win_iocp_operation()
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{
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}
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private:
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func_type func_;
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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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#endif // defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0400)
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#endif // defined(BOOST_WINDOWS)
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#include <boost/asio/detail/pop_options.hpp>
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#endif // BOOST_ASIO_DETAIL_WIN_IOCP_OPERATION_HPP
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