104 lines
2.1 KiB
C++
104 lines
2.1 KiB
C++
//
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// win_event.hpp
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// ~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2008 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 ASIO_DETAIL_WIN_EVENT_HPP
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#define ASIO_DETAIL_WIN_EVENT_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 "asio/detail/push_options.hpp"
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#include "asio/detail/push_options.hpp"
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#include <boost/config.hpp>
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#include "asio/detail/pop_options.hpp"
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#if defined(BOOST_WINDOWS)
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#include "asio/error.hpp"
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#include "asio/system_error.hpp"
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#include "asio/detail/noncopyable.hpp"
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#include "asio/detail/socket_types.hpp"
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#include "asio/detail/push_options.hpp"
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#include <boost/assert.hpp>
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#include <boost/throw_exception.hpp>
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#include "asio/detail/pop_options.hpp"
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namespace asio {
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namespace detail {
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class win_event
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: private noncopyable
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{
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public:
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// Constructor.
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win_event()
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: event_(::CreateEvent(0, true, false, 0))
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{
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if (!event_)
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{
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DWORD last_error = ::GetLastError();
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asio::system_error e(
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asio::error_code(last_error,
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asio::error::get_system_category()),
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"event");
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boost::throw_exception(e);
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}
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}
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// Destructor.
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~win_event()
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{
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::CloseHandle(event_);
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}
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// Signal the event.
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template <typename Lock>
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void signal(Lock& lock)
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{
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BOOST_ASSERT(lock.locked());
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(void)lock;
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::SetEvent(event_);
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}
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// Reset the event.
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template <typename Lock>
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void clear(Lock& lock)
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{
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BOOST_ASSERT(lock.locked());
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(void)lock;
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::ResetEvent(event_);
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}
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// Wait for the event to become signalled.
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template <typename Lock>
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void wait(Lock& lock)
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{
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BOOST_ASSERT(lock.locked());
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lock.unlock();
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::WaitForSingleObject(event_, INFINITE);
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lock.lock();
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}
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private:
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HANDLE event_;
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};
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} // namespace detail
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} // namespace asio
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#endif // defined(BOOST_WINDOWS)
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#include "asio/detail/pop_options.hpp"
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#endif // ASIO_DETAIL_WIN_EVENT_HPP
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