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 <wtf/Noncopyable.h>

    31 #include <wtf/HashSet.h>

    32 #include <wtf/Vector.h>

    33 

    34 namespace WebCore {

    35 

    36     class SharedTimer;

    37     class TimerBase;

    38 

    39     // A collection of timers per thread. Kept in ThreadGlobalData.

    40     class ThreadTimers : public Noncopyable {

    41     public:

    42         ThreadTimers();

    43 

    44         // On a thread different then main, we should set the thread's instance of the SharedTimer.

    45         void setSharedTimer(SharedTimer*);

    46 

    47         Vector<TimerBase*>& timerHeap() { return m_timerHeap; }

    48 

    49         void updateSharedTimer();

    50         void fireTimersInNestedEventLoop();

    51 

    52     private:

    53         static void sharedTimerFired();

    54 

    55         void sharedTimerFiredInternal();

    56         void fireTimersInNestedEventLoopInternal();

    57 

    58         Vector<TimerBase*> m_timerHeap;

    59         SharedTimer* m_sharedTimer; // External object, can be a run loop on a worker thread. Normally set/reset by worker thread.

    60         bool m_firingTimers; // Reentrancy guard.

    61     };

    62 

    63 }

    64 

    65 #endif