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Backed out changeset 9f0d0ce9c0df (bug 1770658) for causing dt failures on browser_aboutdebugging_devtoolstoolbox_reload.js. CLOSED TREE

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This commit is contained in:
Iulian Moraru 2023-02-25 14:30:52 +02:00
parent 09f8e5b108
commit 325021f37a
1 changed files with 23 additions and 26 deletions
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49
xpcom/threads/TimerThread.cpp
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@ -800,34 +800,31 @@ nsresult TimerThread::AddTimer(nsTimerImpl* aTimer,
return rv;
}
// Fire this timer immediately (and skip adding it to our timer list) if the
// delay is 0, which are meant to be run as soon as possible. This has less
// overhead than waking up the timer thread and handling it there while still
// maintaining timer ordering and response time.
const bool fireImmediately = aTimer->mDelay.IsZero();
if (fireImmediately) {
RefPtr<nsTimerImpl> timerRef(aTimer);
LogTimerEvent::Run run(aTimer);
PostTimerEvent(timerRef.forget());
} else {
// Awaken the timer thread if this timer wants to fire *before* the Timer
// Thread is scheduled to wake up. We don't track this directly but we know
// that we will have attempted to wake up at the timeout for the first time
// in our list (if it exists), so we can use that. Note: This is true even
// if the timer has since been canceled.
const bool wakeUpTimerThread =
mWaiting &&
(mTimers.Length() == 0 || aTimer->mTimeout < mTimers[0].Timeout());
// Awaken the timer thread if:
// - This timer wants to fire *before* the Timer Thread is scheduled to wake
// up. We don't track this directly but we know that we will have attempted
// to wake up at the timeout for the first time in our list (if it exists),
// so we can use that. Note: This is true even if the timer has since been
// canceled.
// AND/OR
// - The delay is 0, which is usually meant to be run as soon as possible.
// Note: Even if the thread is scheduled to wake up now/soon, on some
// systems there could be a significant delay compared to notifying, which
// is almost immediate; and some users of 0-delay depend on it being this
// fast!
const bool wakeUpTimerThread =
mWaiting &&
(mTimers.Length() == 0 || aTimer->mTimeout < mTimers[0].Timeout() ||
aTimer->mDelay.IsZero());
// Add the timer to our list.
if (!AddTimerInternal(aTimer)) {
return NS_ERROR_OUT_OF_MEMORY;
}
// Add the timer to our list.
if (!AddTimerInternal(aTimer)) {
return NS_ERROR_OUT_OF_MEMORY;
}
if (wakeUpTimerThread) {
mNotified = true;
mMonitor.Notify();
}
if (wakeUpTimerThread) {
mNotified = true;
mMonitor.Notify();
}
if (profiler_thread_is_being_profiled_for_markers(mProfilerThreadId)) {