Merge "BatteryStats: Allow for sample errors in wlan stats" into nyc-dev (135c4760) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/am/BatteryStatsService.java

+29 −25

Original line number	Diff line number	Diff line
		@@ -88,6 +88,9 @@ public final class BatteryStatsService extends IBatteryStats.Stub
		*/
		private static final long EXTERNAL_STATS_SYNC_TIMEOUT_MILLIS = 2000;

		// There is some accuracy error in wifi reports so allow some slop in the results.
		private static final long MAX_WIFI_STATS_SAMPLE_ERROR_MILLIS = 750;

		private static IBatteryStats sService;

		final BatteryStatsImpl mStats;
		@@ -1338,10 +1341,10 @@ public final class BatteryStatsService extends IBatteryStats.Stub
		} else {
		final long totalActiveTimeMs = txTimeMs + rxTimeMs;
		long maxExpectedIdleTimeMs;
		// Active time can never be greater than the total time, the stats received seem
		// to be corrupt.
		if (totalActiveTimeMs > timePeriodMs) {
		maxExpectedIdleTimeMs = timePeriodMs;
		// Cap the max idle time at zero since the active time consumed the whole time
		maxExpectedIdleTimeMs = 0;
		if (totalActiveTimeMs > timePeriodMs + MAX_WIFI_STATS_SAMPLE_ERROR_MILLIS) {
		StringBuilder sb = new StringBuilder();
		sb.append("Total Active time ");
		TimeUtils.formatDuration(totalActiveTimeMs, sb);
		@@ -1364,6 +1367,7 @@ public final class BatteryStatsService extends IBatteryStats.Stub
		TimeUtils.formatDuration(latest.mControllerTxTimeMs, sb);
		sb.append(" e=").append(latest.mControllerEnergyUsed);
		Slog.wtf(TAG, sb.toString());
		}
		} else {
		maxExpectedIdleTimeMs = timePeriodMs - totalActiveTimeMs;
		}