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      1 /*
      2  * Copyright (C) 2009 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  *
      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  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "config.h"
     30 
     31 #if PLATFORM(MAC) && HAVE(RUNLOOP_TIMER)
     32 
     33 #include "RunLoopTimer.h"
     34 
     35 namespace WebCore {
     36 
     37 RunLoopTimerBase::~RunLoopTimerBase()
     38 {
     39     stop();
     40 }
     41 
     42 static void timerFired(CFRunLoopTimerRef, void* context)
     43 {
     44     RunLoopTimerBase* timer = static_cast<RunLoopTimerBase*>(context);
     45     timer->fired();
     46 }
     47 
     48 void RunLoopTimerBase::start(double nextFireInterval, double repeatInterval)
     49 {
     50     if (m_timer)
     51         CFRunLoopTimerInvalidate(m_timer.get());
     52     CFRunLoopTimerContext context = { 0, this, 0, 0, 0 };
     53     m_timer.adoptCF(CFRunLoopTimerCreate(0, CFAbsoluteTimeGetCurrent() + nextFireInterval, repeatInterval, 0, 0, timerFired, &context));
     54 }
     55 
     56 void RunLoopTimerBase::schedule(const SchedulePair* schedulePair)
     57 {
     58     ASSERT_ARG(schedulePair, schedulePair);
     59     ASSERT_WITH_MESSAGE(m_timer, "Timer must have one of the start functions called before calling schedule().");
     60     CFRunLoopAddTimer(schedulePair->runLoop(), m_timer.get(), schedulePair->mode());
     61 }
     62 
     63 void RunLoopTimerBase::schedule(const SchedulePairHashSet& schedulePairs)
     64 {
     65     SchedulePairHashSet::const_iterator end = schedulePairs.end();
     66     for (SchedulePairHashSet::const_iterator it = schedulePairs.begin(); it != end; ++it)
     67         schedule((*it).get());
     68 }
     69 
     70 void RunLoopTimerBase::stop()
     71 {
     72     if (!m_timer)
     73         return;
     74     CFRunLoopTimerInvalidate(m_timer.get());
     75     m_timer = 0;
     76 }
     77 
     78 bool RunLoopTimerBase::isActive() const
     79 {
     80     return m_timer && CFRunLoopTimerIsValid(m_timer.get());
     81 }
     82 
     83 } // namespace WebCore
     84 
     85 #endif // PLATFORM(MAC) && HAVE(RUNLOOP_TIMER)
     86