Timer

最新推荐文章于 2022-10-13 16:58:28 发布

elfylin

最新推荐文章于 2022-10-13 16:58:28 发布

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分类专栏： Webkit Study

本文链接：https://blog.youkuaiyun.com/elfylin/article/details/8270971

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本文详细解析了 WebKit 中 Timer 的工作原理，包括 Timer 的启动流程、设置触发函数及触发过程。介绍了 TimerBase、ThreadTimers 和 MainThreadSharedTimer 等关键组件的作用及其交互方式。

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http://blog.youkuaiyun.com/elfylin/article/details/7072406

1. Timer.start

void TimerBase::start
TimerBase::setNextFireTime
ThreadTimers::updateSharedTimer
SharedTimer::setFireTime
MainThreadSharedTimer::setFireTime
MainThreadSharedTimer::setSharedTimerFireTime
TimerClient::setSharedTimer
JavaBridge::setSharedTimer
JWebCoreJavaBridge.java::setSharedTimer
JWebCoreJavaBridge.java::fireSharedTimer
JWebCoreJavaBridge.java::sharedTimerFired
JavaBridge::SharedTimerFired
JavaBridge::sSharedTimerFiredCallback

2.set firedfunc

ThreadTimers::sharedTimerFired()/static Vector<TimerBase*>& timerHeap()/TimerBase::setNextFireTime
ThreadTimers& ThreadGlobalData::threadTimers()
ThreadTimers::ThreadTimers
ThreadTimers::setSharedTimer(ThreadTimers::sharedTimerFired)
MainThreadSharedTimer::setFiredFunction
setSharedTimerFiredFunction(void (*f)()) (SharedTimerAndroid.cpp)

ThreadGlobalData has "HashMap<ThreadIdentifier, ThreadTimers* > m_threadTimers"
ThreadTimer has "Vector<TimerBase*> m_timerHeap"

3.TimerFired
ThreadTimers::sharedTimerFired
threadGlobalData().threadTimers().sharedTimerFiredInternal();
void ThreadTimers::sharedTimerFiredInternal()
Timer::fired()
TimerFiredClass::TimerFiredFunction()