Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 9b446034 authored by Steve Kondik's avatar Steve Kondik
Browse files

alarmmanager: Reduce calls to elapsedRealtime() 

 * The RTC poweroff wakeup code needs to do an exhaustive search for
   matching alarms during every rebatching. This loop was calling
   elapsedRealtime() for every alarm over and over, which is slow on
   32-bit ARM. This results in ANRs. Just call it once.

Change-Id: I9df947d5a5c4f1d582238be63ce7da580aa26504
parent ddd6f62b

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

+2 −1
Original line number Diff line number Diff line
@@ -1532,10 +1532,11 @@ class AlarmManagerService extends SystemService { 
    }



    private Batch findFirstRtcWakeupBatchLocked() {

        long elapsed = SystemClock.elapsedRealtime();

        final int N = mAlarmBatches.size();

        for (int i = 0; i < N; i++) {

            Batch b = mAlarmBatches.get(i);

            long intervalTime  = b.start - SystemClock.elapsedRealtime();

            long intervalTime = b.start - elapsed;

            if (b.isRtcPowerOffWakeup()) {

                return b;

            }