Merge "Throttle fetching RPM stats" into oc-mr1-dev (8ddb77a3) · Commits · e / os / android_frameworks_base

core/java/com/android/internal/os/BatteryStatsImpl.java

+13 −3

Original line number	Diff line number	Diff line
		@@ -183,8 +183,12 @@ public class BatteryStatsImpl extends BatteryStats {
		return mKernelMemoryStats;
		}

		/** Temporary container for Resource Power Manager stats. */
		/** Container for Resource Power Manager stats. Updated by updateRpmStatsLocked. */
		private final RpmStats mTmpRpmStats = new RpmStats();
		/** The soonest the RPM stats can be updated after it was last updated. */
		private static final long RPM_STATS_UPDATE_FREQ_MS = 1000;
		/** Last time that RPM stats were updated by updateRpmStatsLocked. */
		private long mLastRpmStatsUpdateTimeMs = -RPM_STATS_UPDATE_FREQ_MS;

		public interface BatteryCallback {
		public void batteryNeedsCpuUpdate();
		@@ -10246,11 +10250,17 @@ public class BatteryStatsImpl extends BatteryStats {
		}

		/**
		* Read and record Resource Power Manager state and voter times.
		* Read and record Resource Power Manager (RPM) state and voter times.
		* If RPM stats were fetched more recently than RPM_STATS_UPDATE_FREQ_MS ago, uses the old data
		* instead of fetching it anew.
		*/
		public void updateRpmStatsLocked() {
		if (mPlatformIdleStateCallback == null) return;
		long now = SystemClock.elapsedRealtime();
		if (now - mLastRpmStatsUpdateTimeMs >= RPM_STATS_UPDATE_FREQ_MS) {
		mPlatformIdleStateCallback.fillLowPowerStats(mTmpRpmStats);
		mLastRpmStatsUpdateTimeMs = now;
		}

		for (Map.Entry<String, RpmStats.PowerStatePlatformSleepState> pstate
		: mTmpRpmStats.mPlatformLowPowerStats.entrySet()) {