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//
// 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/push_options.hpp>
#include <boost/asio/detail/win_iocp_io_service_fwd.hpp>
#if defined(BOOST_ASIO_HAS_IOCP)
#include <boost/asio/detail/op_queue.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
#endif // defined(BOOST_ASIO_HAS_IOCP)
#include <boost/system/error_code.hpp>
#include <boost/asio/detail/pop_options.hpp>
#endif // BOOST_ASIO_DETAIL_WIN_IOCP_OPERATION_HPP
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Swift