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Bug 1139253. Reuse the same thread for the software vsync thread. r=kats

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This commit is contained in:
Mason Chang 2015-03-09 08:19:07 -07:00
parent f5c6e9dc7f
commit 5ce011a2c3
1 changed files with 4 additions and 3 deletions
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7
gfx/thebes/SoftwareVsyncSource.cpp
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@ -10,6 +10,7 @@
SoftwareVsyncSource::SoftwareVsyncSource()
{
MOZ_ASSERT(NS_IsMainThread());
mGlobalDisplay = new SoftwareDisplay();
}
@ -30,6 +31,7 @@ SoftwareDisplay::SoftwareDisplay()
const double rate = 1000 / 60.0;
mVsyncRate = mozilla::TimeDuration::FromMilliseconds(rate);
mVsyncThread = new base::Thread("SoftwareVsyncThread");
MOZ_RELEASE_ASSERT(mVsyncThread->Start(), "Could not start software vsync thread");
}
void
@ -43,8 +45,7 @@ SoftwareDisplay::EnableVsync()
{ // scope lock
mozilla::MonitorAutoLock lock(mCurrentTaskMonitor);
mVsyncEnabled = true;
MOZ_ASSERT(!mVsyncThread->IsRunning());
MOZ_RELEASE_ASSERT(mVsyncThread->Start(), "Could not start software vsync thread");
MOZ_ASSERT(mVsyncThread->IsRunning());
mCurrentVsyncTask = NewRunnableMethod(this,
&SoftwareDisplay::NotifyVsync,
mozilla::TimeStamp::Now());
@ -69,7 +70,6 @@ SoftwareDisplay::DisableVsync()
mCurrentVsyncTask = nullptr;
}
}
mVsyncThread->Stop();
}
bool
@ -136,5 +136,6 @@ SoftwareDisplay::ScheduleNextVsync(mozilla::TimeStamp aVsyncTimestamp)
SoftwareDisplay::~SoftwareDisplay()
{
MOZ_ASSERT(NS_IsMainThread());
mVsyncThread->Stop();
delete mVsyncThread;
}