commit 2fd3ceaf9834d1a0056ff59c454c643f7ab14f75
author Kevin DuBois <kevindubois@google.com> Thu Nov 14 08:52:45 2019 -0800
committer Kevin DuBois <kevindubois@google.com> Tue Nov 26 11:10:28 2019 -0800
tree 102379b55c35b9b7e9ba01a756197f13c4aeb126
parent b2501bad7ccb2000237ccb2b08ca04f7ca6c5ec1

SF: VSyncReactor add timestamp querying functions

Adds 2 more functions from the DispSync interface to VSyncReactor,
computeNextRefresh, and expectedPresentTime

Bug: 140303479
Test: 3 new units

Change-Id: I75ea79ed749f05daf3337ddc8ca145e2ecceabcd

services/surfaceflinger/Scheduler/VSyncReactor.cpp

diff --git a/services/surfaceflinger/Scheduler/VSyncReactor.cpp b/services/surfaceflinger/Scheduler/VSyncReactor.cpp
index 1398362..9ce440c 100644
--- a/services/surfaceflinger/Scheduler/VSyncReactor.cpp
+++ b/services/surfaceflinger/Scheduler/VSyncReactor.cpp
@@ -15,14 +15,18 @@
  */
 
 #include "VSyncReactor.h"
+#include "TimeKeeper.h"
 #include "VSyncDispatch.h"
 #include "VSyncTracker.h"
 
 namespace android::scheduler {
 
-VSyncReactor::VSyncReactor(std::unique_ptr<VSyncDispatch> dispatch,
+Clock::~Clock() = default;
+
+VSyncReactor::VSyncReactor(std::unique_ptr<Clock> clock, std::unique_ptr<VSyncDispatch> dispatch,
                            std::unique_ptr<VSyncTracker> tracker, size_t pendingFenceLimit)
-      : mDispatch(std::move(dispatch)),
+      : mClock(std::move(clock)),
+        mDispatch(std::move(dispatch)),
         mTracker(std::move(tracker)),
         mPendingLimit(pendingFenceLimit) {}
 
@@ -73,4 +77,14 @@
     }
 }
 
+nsecs_t VSyncReactor::computeNextRefresh(int periodOffset) const {
+    auto const now = mClock->now();
+    auto const currentPeriod = periodOffset ? mTracker->currentPeriod() : 0;
+    return mTracker->nextAnticipatedVSyncTimeFrom(now + periodOffset * currentPeriod);
+}
+
+nsecs_t VSyncReactor::expectedPresentTime() {
+    return mTracker->nextAnticipatedVSyncTimeFrom(mClock->now());
+}
+
 } // namespace android::scheduler