Merge "Add dumpsys of recent wakeup patterns, for analysis" (d04f864a) · Commits · e / os / android_frameworks_base

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

+75 −2

Original line number	Diff line number	Diff line
		@@ -53,7 +53,7 @@ import java.util.Collections;
		import java.util.Comparator;
		import java.util.Date;
		import java.util.HashMap;
		import java.util.Iterator;
		import java.util.LinkedList;
		import java.util.Map;
		import java.util.TimeZone;

		@@ -69,6 +69,7 @@ class AlarmManagerService extends IAlarmManager.Stub {
		private static final int ELAPSED_REALTIME_WAKEUP_MASK = 1 << AlarmManager.ELAPSED_REALTIME_WAKEUP;
		private static final int ELAPSED_REALTIME_MASK = 1 << AlarmManager.ELAPSED_REALTIME;
		private static final int TIME_CHANGED_MASK = 1 << 16;
		private static final int IS_WAKEUP_MASK = RTC_WAKEUP_MASK\|ELAPSED_REALTIME_WAKEUP_MASK;

		// Alignment quantum for inexact repeating alarms
		private static final long QUANTUM = AlarmManager.INTERVAL_FIFTEEN_MINUTES;
		@@ -82,6 +83,8 @@ class AlarmManagerService extends IAlarmManager.Stub {
		private static final Intent mBackgroundIntent
		= new Intent().addFlags(Intent.FLAG_FROM_BACKGROUND);

		private static final boolean WAKEUP_STATS = true;

		private final Context mContext;

		private final LocalLog mLog = new LocalLog(TAG);
		@@ -106,6 +109,21 @@ class AlarmManagerService extends IAlarmManager.Stub {
		private final PendingIntent mTimeTickSender;
		private final PendingIntent mDateChangeSender;

		class WakeupEvent {
		public long when;
		public int uid;
		public String action;

		public WakeupEvent(long theTime, int theUid, String theAction) {
		when = theTime;
		uid = theUid;
		action = theAction;
		}
		}

		private final LinkedList<WakeupEvent> mRecentWakeups = new LinkedList<WakeupEvent>();
		private final long RECENT_WAKEUP_PERIOD = 1000L * 60 * 60 * 24; // one day

		private static final class InFlight extends Intent {
		final PendingIntent mPendingIntent;
		final Pair<String, ComponentName> mTarget;
		@@ -640,6 +658,27 @@ class AlarmManagerService extends IAlarmManager.Stub {
		pw.println();
		}
		}

		if (WAKEUP_STATS) {
		pw.println();
		pw.println(" Recent Wakeup History:");
		final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd-HH:mm:ss.SSS");
		long last = -1;
		for (WakeupEvent event : mRecentWakeups) {
		pw.print(" "); pw.print(sdf.format(new Date(event.when)));
		pw.print('\|');
		if (last < 0) {
		pw.print('0');
		} else {
		pw.print(event.when - last);
		}
		last = event.when;
		pw.print('\|'); pw.print(event.uid);
		pw.print('\|'); pw.print(event.action);
		pw.println();
		}
		pw.println();
		}
		}
		}

		@@ -776,6 +815,19 @@ class AlarmManagerService extends IAlarmManager.Stub {
		}
		}

		void recordWakeupAlarms(ArrayList<Alarm> alarms, long now, long skewToRTC) {
		for (Alarm a : alarms) {
		if (a.when > now) {
		break;
		}

		WakeupEvent e = new WakeupEvent(now + skewToRTC,
		a.operation.getCreatorUid(),
		a.operation.getIntent().getAction());
		mRecentWakeups.add(e);
		}
		}

		private class AlarmThread extends Thread
		{
		public AlarmThread()
		@@ -809,6 +861,27 @@ class AlarmManagerService extends IAlarmManager.Stub {
		TAG, "Checking for alarms... rtc=" + nowRTC
		+ ", elapsed=" + nowELAPSED);

		if (WAKEUP_STATS) {
		if ((result & IS_WAKEUP_MASK) != 0) {
		long newEarliest = nowRTC - RECENT_WAKEUP_PERIOD;
		int n = 0;
		for (WakeupEvent event : mRecentWakeups) {
		if (event.when > newEarliest) break;
		n++; // number of now-stale entries at the list head
		}
		for (int i = 0; i < n; i++) {
		mRecentWakeups.remove();
		}

		recordWakeupAlarms(mRtcWakeupAlarms,
		nowRTC,
		0);
		recordWakeupAlarms(mElapsedRealtimeWakeupAlarms,
		nowELAPSED,
		nowRTC - nowELAPSED);
		}
		}

		if ((result & RTC_WAKEUP_MASK) != 0)
		triggerAlarmsLocked(mRtcWakeupAlarms, triggerList, nowRTC);