commit 7948c8737fb6e651f31c9e2166dcfbd2d1e41939
author Bookatz <bookatz@google.com> Tue Sep 04 12:58:33 2018 -0700
committer Bookatz <bookatz@google.com> Thu Sep 06 10:26:37 2018 -0700
tree c9b29c3c4edc7a9b2055b2215f1313dc8952809b
parent 2aba8d3d358455a73852f4fcb1fa058a6de15f26

statsd atom: add WallClockTimeShifted

In ag/4888395 we get rid of wall-clock time from EventMetrics because it
is very RAM-costly. If someone needs the wall-clock time, they can get
it from this atom instead. This way, the wall-clock time is only stored
when interesting, instead of every single event!

Bug: 113072343
Test: manual confirmation that it works
Change-Id: I10c26a4fc9c73b29233108ef1fc0e9797382a8df

services/core/java/com/android/server/AlarmManagerService.java

diff --git a/services/core/java/com/android/server/AlarmManagerService.java b/services/core/java/com/android/server/AlarmManagerService.java
index 26ef42f..93faa62 100644
--- a/services/core/java/com/android/server/AlarmManagerService.java
+++ b/services/core/java/com/android/server/AlarmManagerService.java
@@ -80,6 +80,7 @@
 import android.util.SparseArray;
 import android.util.SparseBooleanArray;
 import android.util.SparseLongArray;
+import android.util.StatsLog;
 import android.util.TimeUtils;
 import android.util.proto.ProtoOutputStream;
 
@@ -3560,6 +3561,8 @@
                         if (DEBUG_BATCH) {
                             Slog.v(TAG, "Time changed notification from kernel; rebatching");
                         }
+                        // StatsLog requires currentTimeMillis(), which == nowRTC to within usecs.
+                        StatsLog.write(StatsLog.WALL_CLOCK_TIME_SHIFTED, nowRTC);
                         removeImpl(mTimeTickSender);
                         removeImpl(mDateChangeSender);
                         rebatchAllAlarms();