SurfaceFlinger: use intended wake up time when calculating next present time
If SurfaceFlinger wakes up too late (due to the main thread being busy)
it may calculate a wrong presentation time as it is based on the wake up time.
Instead, cache the intended wake up time and use it as the base time.
Change-Id: I84c37bd5f164fbdef3151c0898d3cea624cea515
Bug: 154199567
Test: collect systrace for launcher scrolling
diff --git a/services/surfaceflinger/Scheduler/VSyncReactor.h b/services/surfaceflinger/Scheduler/VSyncReactor.h
index 5ee29f8..31ddf5a 100644
--- a/services/surfaceflinger/Scheduler/VSyncReactor.h
+++ b/services/surfaceflinger/Scheduler/VSyncReactor.h
@@ -42,8 +42,8 @@
bool addPresentFence(const std::shared_ptr<FenceTime>& fence) final;
void setIgnorePresentFences(bool ignoration) final;
- nsecs_t computeNextRefresh(int periodOffset) const final;
- nsecs_t expectedPresentTime() final;
+ nsecs_t computeNextRefresh(int periodOffset, nsecs_t now) const final;
+ nsecs_t expectedPresentTime(nsecs_t now) final;
void setPeriod(nsecs_t period) final;
nsecs_t getPeriod() final;