1/*
2 * Copyright (C) 2010 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "BinarySemaphore.h"
28
29#if !PLATFORM(WIN)
30
31namespace WTF {
32
33BinarySemaphore::BinarySemaphore()
34    : m_isSet(false)
35{
36}
37
38BinarySemaphore::~BinarySemaphore()
39{
40}
41
42void BinarySemaphore::signal()
43{
44    MutexLocker locker(m_mutex);
45
46    m_isSet = true;
47    m_condition.signal();
48}
49
50bool BinarySemaphore::wait(double absoluteTime)
51{
52    MutexLocker locker(m_mutex);
53
54    bool timedOut = false;
55    while (!m_isSet) {
56        timedOut = !m_condition.timedWait(m_mutex, absoluteTime);
57        if (timedOut)
58            return false;
59    }
60
61    // Reset the semaphore.
62    m_isSet = false;
63    return true;
64}
65
66} // namespace WTF
67
68#endif // !PLATFORM(WIN)
69