diff options
| -rw-r--r-- | services/surfaceflinger/DispSync.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/services/surfaceflinger/DispSync.cpp b/services/surfaceflinger/DispSync.cpp index 167c6f04be..ce07ab56c1 100644 --- a/services/surfaceflinger/DispSync.cpp +++ b/services/surfaceflinger/DispSync.cpp @@ -164,7 +164,14 @@ public: EventListener listener; listener.mPhase = phase; listener.mCallback = callback; - listener.mLastEventTime = systemTime(SYSTEM_TIME_MONOTONIC); + + // We want to allow the firstmost future event to fire without + // allowing any past events to fire. Because + // computeListenerNextEventTimeLocked filters out events within a half + // a period of the last event time, we need to initialize the last + // event time to a half a period in the past. + listener.mLastEventTime = systemTime(SYSTEM_TIME_MONOTONIC) - mPeriod / 2; + mEventListeners.push(listener); mCond.signal(); |