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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 #include "RunLoopTimer.h"
     31 
     32 #if PLATFORM(MAC) && HAVE(RUNLOOP_TIMER)
     33 
     34 namespace WebCore {
     35 
     36 RunLoopTimerBase::~RunLoopTimerBase()
     37 {
     38     stop();
     39 }
     40 
     41 static void timerFired(CFRunLoopTimerRef, void* context)
     42 {
     43     RunLoopTimerBase* timer = static_cast<RunLoopTimerBase*>(context);
     44     timer->fired();
     45 }
     46 
     47 void RunLoopTimerBase::start(double nextFireInterval, double repeatInterval)
     48 {
     49     if (m_timer)
     50         CFRunLoopTimerInvalidate(m_timer.get());
     51     CFRunLoopTimerContext context = { 0, this, 0, 0, 0 };
     52     m_timer.adoptCF(CFRunLoopTimerCreate(0, CFAbsoluteTimeGetCurrent() + nextFireInterval, repeatInterval, 0, 0, timerFired, &context));
     53 }
     54 
     55 void RunLoopTimerBase::schedule(const SchedulePair* schedulePair)
     56 {
     57     ASSERT_ARG(schedulePair, schedulePair);
     58     ASSERT_WITH_MESSAGE(m_timer, "Timer must have one of the start functions called before calling schedule().");
     59     CFRunLoopAddTimer(schedulePair->runLoop(), m_timer.get(), schedulePair->mode());
     60 }
     61 
     62 void RunLoopTimerBase::schedule(const SchedulePairHashSet& schedulePairs)
     63 {
     64     SchedulePairHashSet::const_iterator end = schedulePairs.end();
     65     for (SchedulePairHashSet::const_iterator it = schedulePairs.begin(); it != end; ++it)
     66         schedule((*it).get());
     67 }
     68 
     69 void RunLoopTimerBase::stop()
     70 {
     71     if (!m_timer)
     72         return;
     73     CFRunLoopTimerInvalidate(m_timer.get());
     74     m_timer = 0;
     75 }
     76 
     77 bool RunLoopTimerBase::isActive() const
     78 {
     79     return m_timer && CFRunLoopTimerIsValid(m_timer.get());
     80 }
     81 
     82 } // namespace WebCore
     83 
     84 #endif // PLATFORM(MAC) && HAVE(RUNLOOP_TIMER)
     85