1/*
2 * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
3 * Copyright (C) 2009 Google Inc.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef ThreadTimers_h
28#define ThreadTimers_h
29
30#include "platform/PlatformExport.h"
31#include "wtf/Noncopyable.h"
32#include "wtf/HashSet.h"
33#include "wtf/Vector.h"
34
35namespace blink {
36
37class SharedTimer;
38class TimerBase;
39
40// A collection of timers per thread. Kept in PlatformThreadData.
41class PLATFORM_EXPORT ThreadTimers {
42    WTF_MAKE_NONCOPYABLE(ThreadTimers); WTF_MAKE_FAST_ALLOCATED;
43public:
44    ThreadTimers();
45
46    // On a thread different then main, we should set the thread's instance of the SharedTimer.
47    void setSharedTimer(SharedTimer*);
48
49    Vector<TimerBase*>& timerHeap() { return m_timerHeap; }
50
51    void updateSharedTimer();
52    void fireTimersInNestedEventLoop();
53
54private:
55    static void sharedTimerFired();
56
57    void sharedTimerFiredInternal();
58    void fireTimersInNestedEventLoopInternal();
59
60    Vector<TimerBase*> m_timerHeap;
61    SharedTimer* m_sharedTimer; // External object, can be a run loop on a worker thread. Normally set/reset by worker thread.
62    bool m_firingTimers; // Reentrancy guard.
63    double m_pendingSharedTimerFireTime;
64};
65
66}
67
68#endif
69