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Bug 1141361 - Reuse the same thread when we start/stop vsync event for the windows vsync thread. r=jrmuizel

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This commit is contained in:
Mason Chang 2015-03-11 18:35:50 -07:00
parent adc2e03934
commit e8a505d7fb
1 changed files with 8 additions and 9 deletions
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17
gfx/thebes/gfxWindowsPlatform.cpp
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@ -1971,11 +1971,13 @@ public:
mVsyncThread = new base::Thread("WindowsVsyncThread");
const double rate = 1000 / 60.0;
mSoftwareVsyncRate = TimeDuration::FromMilliseconds(rate);
MOZ_RELEASE_ASSERT(mVsyncThread->Start(), "Could not start Windows vsync thread");
}
virtual void EnableVsync() MOZ_OVERRIDE
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mVsyncThread->IsRunning());
{ // scope lock
MonitorAutoLock lock(mVsyncEnabledLock);
if (mVsyncEnabled) {
@ -1984,7 +1986,6 @@ public:
mVsyncEnabled = true;
}
MOZ_RELEASE_ASSERT(mVsyncThread->Start(), "Could not start Windows vsync thread");
CancelableTask* vsyncStart = NewRunnableMethod(this,
&D3DVsyncDisplay::VBlankLoop);
mVsyncThread->message_loop()->PostTask(FROM_HERE, vsyncStart);
@ -1993,15 +1994,12 @@ public:
virtual void DisableVsync() MOZ_OVERRIDE
{
MOZ_ASSERT(NS_IsMainThread());
{ // scope lock
MonitorAutoLock lock(mVsyncEnabledLock);
if (!mVsyncEnabled) {
return;
}
mVsyncEnabled = false;
MOZ_ASSERT(mVsyncThread->IsRunning());
MonitorAutoLock lock(mVsyncEnabledLock);
if (!mVsyncEnabled) {
return;
}
mVsyncThread->Stop();
mVsyncEnabled = false;
}
virtual bool IsVsyncEnabled() MOZ_OVERRIDE
@ -2079,6 +2077,7 @@ public:
{
MOZ_ASSERT(NS_IsMainThread());
DisableVsync();
mVsyncThread->Stop();
delete mVsyncThread;
}