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//
// detail/win_event.hpp
// ~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2011 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_EVENT_HPP
#define BOOST_ASIO_DETAIL_WIN_EVENT_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_WINDOWS)
#include <boost/assert.hpp>
#include <boost/asio/detail/noncopyable.hpp>
#include <boost/asio/detail/socket_types.hpp>
#include <boost/asio/detail/push_options.hpp>
namespace boost {
namespace asio {
namespace detail {
class win_event
: private noncopyable
{
public:
// Constructor.
BOOST_ASIO_DECL win_event();
// Destructor.
~win_event()
{
::CloseHandle(event_);
}
// Signal the event.
template <typename Lock>
void signal(Lock& lock)
{
BOOST_ASSERT(lock.locked());
(void)lock;
::SetEvent(event_);
}
// Signal the event and unlock the mutex.
template <typename Lock>
void signal_and_unlock(Lock& lock)
{
BOOST_ASSERT(lock.locked());
lock.unlock();
::SetEvent(event_);
}
// Reset the event.
template <typename Lock>
void clear(Lock& lock)
{
BOOST_ASSERT(lock.locked());
(void)lock;
::ResetEvent(event_);
}
// Wait for the event to become signalled.
template <typename Lock>
void wait(Lock& lock)
{
BOOST_ASSERT(lock.locked());
lock.unlock();
::WaitForSingleObject(event_, INFINITE);
lock.lock();
}
private:
HANDLE event_;
};
} // namespace detail
} // namespace asio
} // namespace boost
#include <boost/asio/detail/pop_options.hpp>
#if defined(BOOST_ASIO_HEADER_ONLY)
# include <boost/asio/detail/impl/win_event.ipp>
#endif // defined(BOOST_ASIO_HEADER_ONLY)
#endif // defined(BOOST_WINDOWS)
#endif // BOOST_ASIO_DETAIL_WIN_EVENT_HPP
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