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/*
* Copyright (C) 2010, 2012 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "RunLoop.h"
#include <CoreFoundation/CoreFoundation.h>
#include <dispatch/dispatch.h>
#include <wtf/AutodrainedPool.h>
namespace WTF {
void RunLoop::performWork(void* context)
{
AutodrainedPool pool;
static_cast<RunLoop*>(context)->performWork();
}
RunLoop::RunLoop()
: m_runLoop(CFRunLoopGetCurrent())
, m_nestingLevel(0)
{
CFRunLoopSourceContext context = { 0, this, 0, 0, 0, 0, 0, 0, 0, performWork };
m_runLoopSource = adoptCF(CFRunLoopSourceCreate(kCFAllocatorDefault, 0, &context));
CFRunLoopAddSource(m_runLoop.get(), m_runLoopSource.get(), kCFRunLoopCommonModes);
}
RunLoop::~RunLoop()
{
CFRunLoopSourceInvalidate(m_runLoopSource.get());
}
void RunLoop::runForDuration(double duration)
{
CFRunLoopRunInMode(kCFRunLoopDefaultMode, duration, true);
}
void RunLoop::wakeUp()
{
CFRunLoopSourceSignal(m_runLoopSource.get());
CFRunLoopWakeUp(m_runLoop.get());
}
void RunLoop::run()
{
current().m_nestingLevel++;
{
AutodrainedPool pool;
CFRunLoopRun();
}
current().m_nestingLevel--;
}
void RunLoop::stop()
{
ASSERT(m_runLoop == CFRunLoopGetCurrent());
CFRunLoopStop(m_runLoop.get());
}
// RunLoop::Timer
void RunLoop::TimerBase::timerFired(CFRunLoopTimerRef, void* context)
{
TimerBase* timer = static_cast<TimerBase*>(context);
AutodrainedPool pool;
timer->fired();
}
RunLoop::TimerBase::TimerBase(RunLoop& runLoop)
: m_runLoop(runLoop)
{
}
RunLoop::TimerBase::~TimerBase()
{
stop();
}
void RunLoop::TimerBase::start(double nextFireInterval, bool repeat)
{
if (m_timer)
stop();
CFRunLoopTimerContext context = { 0, this, 0, 0, 0 };
CFTimeInterval repeatInterval = repeat ? nextFireInterval : 0;
m_timer = adoptCF(CFRunLoopTimerCreate(kCFAllocatorDefault, CFAbsoluteTimeGetCurrent() + nextFireInterval, repeatInterval, 0, 0, timerFired, &context));
CFRunLoopAddTimer(m_runLoop.m_runLoop.get(), m_timer.get(), kCFRunLoopCommonModes);
}
void RunLoop::TimerBase::stop()
{
if (!m_timer)
return;
CFRunLoopTimerInvalidate(m_timer.get());
m_timer = nullptr;
}
bool RunLoop::TimerBase::isActive() const
{
return m_timer && CFRunLoopTimerIsValid(m_timer.get());
}
} // namespace WTF
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