153 lines
4.5 KiB
C++
153 lines
4.5 KiB
C++
/*
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* Copyright (C) 2010-2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include <wtf/RunLoop.h>
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#include <CoreFoundation/CoreFoundation.h>
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#include <dispatch/dispatch.h>
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#include <wtf/AutodrainedPool.h>
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#include <wtf/SchedulePair.h>
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namespace WTF {
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static RetainPtr<CFRunLoopTimerRef> createTimer(Seconds interval, bool repeat, void(*timerFired)(CFRunLoopTimerRef, void*), void* info)
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{
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CFRunLoopTimerContext context = { 0, info, 0, 0, 0 };
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Seconds repeatInterval = repeat ? interval : 0_s;
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return adoptCF(CFRunLoopTimerCreate(kCFAllocatorDefault, CFAbsoluteTimeGetCurrent() + interval.seconds(), repeatInterval.seconds(), 0, 0, timerFired, &context));
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}
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void RunLoop::performWork(void* context)
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{
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AutodrainedPool pool;
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static_cast<RunLoop*>(context)->performWork();
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}
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RunLoop::RunLoop()
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: m_runLoop(CFRunLoopGetCurrent())
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{
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CFRunLoopSourceContext context = { 0, this, 0, 0, 0, 0, 0, 0, 0, performWork };
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m_runLoopSource = adoptCF(CFRunLoopSourceCreate(kCFAllocatorDefault, 0, &context));
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CFRunLoopAddSource(m_runLoop.get(), m_runLoopSource.get(), kCFRunLoopCommonModes);
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}
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RunLoop::~RunLoop()
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{
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CFRunLoopSourceInvalidate(m_runLoopSource.get());
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}
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void RunLoop::wakeUp()
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{
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CFRunLoopSourceSignal(m_runLoopSource.get());
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CFRunLoopWakeUp(m_runLoop.get());
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}
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RunLoop::CycleResult RunLoop::cycle(RunLoopMode mode)
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{
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CFTimeInterval timeInterval = 0.05;
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CFRunLoopRunInMode(mode, timeInterval, true);
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return CycleResult::Continue;
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}
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void RunLoop::run()
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{
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AutodrainedPool pool;
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CFRunLoopRun();
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}
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void RunLoop::stop()
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{
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ASSERT(m_runLoop == CFRunLoopGetCurrent());
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CFRunLoopStop(m_runLoop.get());
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}
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void RunLoop::dispatch(const SchedulePairHashSet& schedulePairs, Function<void()>&& function)
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{
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auto timer = createTimer(0_s, false, [] (CFRunLoopTimerRef timer, void* context) {
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AutodrainedPool pool;
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CFRunLoopTimerInvalidate(timer);
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auto function = adopt(static_cast<Function<void()>::Impl*>(context));
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function();
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}, function.leak());
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for (auto& schedulePair : schedulePairs)
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CFRunLoopAddTimer(schedulePair->runLoop(), timer.get(), schedulePair->mode());
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}
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// RunLoop::Timer
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RunLoop::TimerBase::TimerBase(RunLoop& runLoop)
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: m_runLoop(runLoop)
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{
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}
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RunLoop::TimerBase::~TimerBase()
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{
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stop();
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}
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void RunLoop::TimerBase::start(Seconds interval, bool repeat)
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{
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if (m_timer)
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stop();
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m_timer = createTimer(interval, repeat, [] (CFRunLoopTimerRef cfTimer, void* context) {
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AutodrainedPool pool;
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auto timer = static_cast<TimerBase*>(context);
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if (!CFRunLoopTimerDoesRepeat(cfTimer))
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CFRunLoopTimerInvalidate(cfTimer);
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timer->fired();
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}, this);
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CFRunLoopAddTimer(m_runLoop->m_runLoop.get(), m_timer.get(), kCFRunLoopCommonModes);
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}
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void RunLoop::TimerBase::stop()
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{
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if (!m_timer)
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return;
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CFRunLoopTimerInvalidate(m_timer.get());
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m_timer = nullptr;
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}
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bool RunLoop::TimerBase::isActive() const
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{
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return m_timer && CFRunLoopTimerIsValid(m_timer.get());
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}
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Seconds RunLoop::TimerBase::secondsUntilFire() const
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{
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if (isActive())
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return std::max<Seconds>(Seconds { CFRunLoopTimerGetNextFireDate(m_timer.get()) - CFAbsoluteTimeGetCurrent() }, 0_s);
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return 0_s;
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}
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} // namespace WTF
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