SurfaceFlinger: no app vsyncs during config switch
Do not dipatch vsync callbacks to applications during a config
switch as applications will get choreographer callbacks at uneven
times and will stuff the queue to surface flinger.
Test: test google/perf/jank/UIBench/UIBench-Trace:com.android.uibench.janktests.UiBenchJankTests#testClippedListView -v
Change-Id: I0537933c27af83a9186bcff54c3596d612c748ea
diff --git a/services/surfaceflinger/Scheduler/Scheduler.h b/services/surfaceflinger/Scheduler/Scheduler.h
index 7b5278c..ce5c87e 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.h
+++ b/services/surfaceflinger/Scheduler/Scheduler.h
@@ -111,6 +111,9 @@
// Offers ability to modify phase offset in the event thread.
void setPhaseOffset(const sp<ConnectionHandle>& handle, nsecs_t phaseOffset);
+ // pause/resume vsync callback generation to avoid sending vsync callbacks during config switch
+ void pauseVsyncCallback(const sp<ConnectionHandle>& handle, bool pause);
+
void getDisplayStatInfo(DisplayStatInfo* stats);
void enableHardwareVsync();