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Fixing issue in current and max duration calculations.

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It looks like one operation was done out of order and some of the times used in
the calculations were leading to incorrect results.

BUG: 31023263
Test: bit FrameworksCoreTests:com.android.internal.os.BatteryStatsDurationTimerTest

Change-Id: I417cc28c5a55748067b6c7f682a66fe3dbc09f09
(cherry picked from commit 47db5a8bf7)
This commit is contained in:
Kweku Adams
2016-12-09 19:04:50 -08:00
parent 7af83d0e5a
commit c6bd4243a4
3 changed files with 26 additions and 28 deletions
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2
core/java/android/os/BatteryStats.java
View File

@@ -182,7 +182,7 @@ public abstract class BatteryStats implements Parcelable {
* New in version 19: * New in version 19:
* - Wakelock data (wl) gets current and max times. * - Wakelock data (wl) gets current and max times.
*/ */
static final String CHECKIN_VERSION = "19"; static final String CHECKIN_VERSION = "20";
/** /**
* Old version, we hit 9 and ran out of room, need to remove. * Old version, we hit 9 and ran out of room, need to remove.

31
core/java/com/android/internal/os/BatteryStatsImpl.java
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@@ -108,7 +108,7 @@ public class BatteryStatsImpl extends BatteryStats {
private static final int MAGIC = 0xBA757475; // 'BATSTATS' private static final int MAGIC = 0xBA757475; // 'BATSTATS'
// Current on-disk Parcel version // Current on-disk Parcel version
private static final int VERSION = 150 + (USE_OLD_HISTORY ? 1000 : 0); private static final int VERSION = 151 + (USE_OLD_HISTORY ? 1000 : 0);
// Maximum number of items we will record in the history. // Maximum number of items we will record in the history.
private static final int MAX_HISTORY_ITEMS = 2000; private static final int MAX_HISTORY_ITEMS = 2000;
@@ -1593,7 +1593,7 @@ public class BatteryStatsImpl extends BatteryStats {
@Override @Override
public void writeToParcel(Parcel out, long elapsedRealtimeUs) { public void writeToParcel(Parcel out, long elapsedRealtimeUs) {
super.writeToParcel(out, elapsedRealtimeUs); super.writeToParcel(out, elapsedRealtimeUs);
out.writeLong(mMaxDurationMs); out.writeLong(getMaxDurationMsLocked(elapsedRealtimeUs / 1000));
} }
/** /**
@@ -1606,7 +1606,7 @@ public class BatteryStatsImpl extends BatteryStats {
@Override @Override
public void writeSummaryFromParcelLocked(Parcel out, long elapsedRealtimeUs) { public void writeSummaryFromParcelLocked(Parcel out, long elapsedRealtimeUs) {
super.writeSummaryFromParcelLocked(out, elapsedRealtimeUs); super.writeSummaryFromParcelLocked(out, elapsedRealtimeUs);
out.writeLong(mMaxDurationMs); out.writeLong(getMaxDurationMsLocked(elapsedRealtimeUs / 1000));
} }
/** /**
@@ -1630,7 +1630,7 @@ public class BatteryStatsImpl extends BatteryStats {
public void onTimeStarted(long elapsedRealtimeUs, long baseUptime, long baseRealtime) { public void onTimeStarted(long elapsedRealtimeUs, long baseUptime, long baseRealtime) {
super.onTimeStarted(elapsedRealtimeUs, baseUptime, baseRealtime); super.onTimeStarted(elapsedRealtimeUs, baseUptime, baseRealtime);
if (mNesting > 0) { if (mNesting > 0) {
mStartTimeMs = mTimeBase.getRealtime(mClocks.elapsedRealtime()*1000) / 1000; mStartTimeMs = baseRealtime / 1000;
} }
} }
@@ -1640,10 +1640,11 @@ public class BatteryStatsImpl extends BatteryStats {
* If the timer is running, add the duration into mCurrentDurationMs. * If the timer is running, add the duration into mCurrentDurationMs.
*/ */
@Override @Override
public void onTimeStopped(long elapsedRealtimeUs, long baseUptime, long baseRealtime) { public void onTimeStopped(long elapsedRealtimeUs, long baseUptime, long baseRealtimeUs) {
super.onTimeStopped(elapsedRealtimeUs, baseUptime, baseRealtime); super.onTimeStopped(elapsedRealtimeUs, baseUptime, baseRealtimeUs);
if (mNesting > 0) { if (mNesting > 0) {
mCurrentDurationMs += (elapsedRealtimeUs / 1000) - mStartTimeMs; // baseRealtimeUs has already been converted to the timebase's realtime.
mCurrentDurationMs += (baseRealtimeUs / 1000) - mStartTimeMs;
} }
mStartTimeMs = -1; mStartTimeMs = -1;
} }
@@ -1658,7 +1659,7 @@ public class BatteryStatsImpl extends BatteryStats {
super.startRunningLocked(elapsedRealtimeMs); super.startRunningLocked(elapsedRealtimeMs);
if (mNesting == 1 && mTimeBase.isRunning()) { if (mNesting == 1 && mTimeBase.isRunning()) {
// Just started // Just started
mStartTimeMs = mTimeBase.getRealtime(mClocks.elapsedRealtime()*1000) / 1000; mStartTimeMs = mTimeBase.getRealtime(elapsedRealtimeMs * 1000) / 1000;
} }
} }
@@ -1670,8 +1671,7 @@ public class BatteryStatsImpl extends BatteryStats {
*/ */
@Override @Override
public void stopRunningLocked(long elapsedRealtimeMs) { public void stopRunningLocked(long elapsedRealtimeMs) {
super.stopRunningLocked(elapsedRealtimeMs); if (mNesting == 1) {
if (mNesting == 0) {
final long durationMs = getCurrentDurationMsLocked(elapsedRealtimeMs); final long durationMs = getCurrentDurationMsLocked(elapsedRealtimeMs);
if (durationMs > mMaxDurationMs) { if (durationMs > mMaxDurationMs) {
mMaxDurationMs = durationMs; mMaxDurationMs = durationMs;
@@ -1679,6 +1679,9 @@ public class BatteryStatsImpl extends BatteryStats {
mStartTimeMs = -1; mStartTimeMs = -1;
mCurrentDurationMs = 0; mCurrentDurationMs = 0;
} }
// super method decrements mNesting, which getCurrentDurationMsLocked relies on,
// so call super.stopRunningLocked after calling getCurrentDurationMsLocked.
super.stopRunningLocked(elapsedRealtimeMs);
} }
@Override @Override
@@ -1720,11 +1723,9 @@ public class BatteryStatsImpl extends BatteryStats {
@Override @Override
public long getCurrentDurationMsLocked(long elapsedRealtimeMs) { public long getCurrentDurationMsLocked(long elapsedRealtimeMs) {
long durationMs = mCurrentDurationMs; long durationMs = mCurrentDurationMs;
if (mNesting > 0) { if (mNesting > 0 && mTimeBase.isRunning()) {
if (mTimeBase.isRunning()) { durationMs += (mTimeBase.getRealtime(elapsedRealtimeMs*1000)/1000)
durationMs += (mTimeBase.getRealtime(elapsedRealtimeMs*1000)/1000) - mStartTimeMs;
- mStartTimeMs;
}
} }
return durationMs; return durationMs;
} }

11
core/tests/coretests/src/com/android/internal/os/BatteryStatsDurationTimerTest.java
View File

@@ -18,12 +18,9 @@ package com.android.internal.os;
import android.os.BatteryStats; import android.os.BatteryStats;
import android.os.Parcel; import android.os.Parcel;
import android.support.test.filters.SmallTest; import android.support.test.filters.SmallTest;
import android.util.Log;
import junit.framework.TestCase; import junit.framework.TestCase;
import org.mockito.Mockito;
/** /**
* Test BatteryStatsImpl.DurationTimer. * Test BatteryStatsImpl.DurationTimer.
* *
@@ -82,15 +79,15 @@ public class BatteryStatsDurationTimerTest extends TestCase {
// Stop the TimeBase. The values should be frozen. // Stop the TimeBase. The values should be frozen.
timeBase.setRunning(false, /* uptimeUs */ 10, /* realtimeUs */ 55000*1000); timeBase.setRunning(false, /* uptimeUs */ 10, /* realtimeUs */ 55000*1000);
assertTrue(timer.isRunningLocked()); assertTrue(timer.isRunningLocked());
assertEquals(28100, timer.getCurrentDurationMsLocked(110100)); // Why 28100 and not 28000? assertEquals(28000, timer.getCurrentDurationMsLocked(110100));
assertEquals(28100, timer.getMaxDurationMsLocked(110101)); assertEquals(28000, timer.getMaxDurationMsLocked(110101));
// Start the TimeBase. The values should be the old value plus the delta // Start the TimeBase. The values should be the old value plus the delta
// between when the timer restarted and the current time // between when the timer restarted and the current time
timeBase.setRunning(true, /* uptimeUs */ 10, /* realtimeUs */ 220100*1000); timeBase.setRunning(true, /* uptimeUs */ 10, /* realtimeUs */ 220100*1000);
assertTrue(timer.isRunningLocked()); assertTrue(timer.isRunningLocked());
assertEquals(28300, timer.getCurrentDurationMsLocked(220300)); // extra 100 from above?? assertEquals(28200, timer.getCurrentDurationMsLocked(220300));
assertEquals(28301, timer.getMaxDurationMsLocked(220301)); assertEquals(28201, timer.getMaxDurationMsLocked(220301));
} }
@SmallTest @SmallTest