blob: 8e82207e96b3321e95a24693980a8afd07a7f74e [file] [log] [blame]
/*
* Copyright (C) 2010, 2011 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef BinarySemaphore_h
#define BinarySemaphore_h
#include <wtf/Noncopyable.h>
#include <wtf/ThreadingPrimitives.h>
namespace WTF {
class BinarySemaphore {
WTF_MAKE_NONCOPYABLE(BinarySemaphore);
public:
BinarySemaphore();
~BinarySemaphore();
void signal();
bool wait(double absoluteTime);
#if PLATFORM(WIN)
HANDLE event() const { return m_event; }
#endif
private:
#if PLATFORM(WIN)
HANDLE m_event;
#else
bool m_isSet;
Mutex m_mutex;
ThreadCondition m_condition;
#endif
};
} // namespace WTF
using WTF::BinarySemaphore;
#endif // BinarySemaphore_h