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Add wakelock anomaly detector

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This cl detects whether apps hold wakelock for long time.
For now we use the following attribute:
1. Longest total duration time among all the wakelocks
for one app.

Following cl will:
1. Get threshold from server side.
2. Add more attributes to make the detection more robust.

Bug: 36925184
Test: RunSettingsRoboTests

Change-Id: I1946faf69c363f6aa823d0005d6e03bc9082c085
This commit is contained in:
jackqdyulei
2017-04-25 18:22:45 -07:00
parent f223383936
commit 4aa3358c4c
5 changed files with 263 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
src/com/android/settings/fuelgauge/anomaly/Anomaly.java
View File

@@ -19,9 +19,11 @@ package com.android.settings.fuelgauge.anomaly;
import android.os.Parcel;
import android.os.Parcelable;
import android.support.annotation.IntDef;
import android.text.TextUtils;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.Objects;
/**
* Data that represents an app has been detected as anomaly. It contains
@@ -53,7 +55,7 @@ public class Anomaly implements Parcelable {
/**
* Display name of this anomaly, usually it is the app name
*/
public final String displayName;
public final CharSequence displayName;
public final String packageName;
private Anomaly(Builder builder) {
@@ -67,7 +69,7 @@ public class Anomaly implements Parcelable {
private Anomaly(Parcel in) {
type = in.readInt();
uid = in.readInt();
displayName = in.readString();
displayName = in.readCharSequence();
packageName = in.readString();
wakelockTimeMs = in.readLong();
}
@@ -81,11 +83,34 @@ public class Anomaly implements Parcelable {
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(type);
dest.writeInt(uid);
dest.writeString(displayName);
dest.writeCharSequence(displayName);
dest.writeString(packageName);
dest.writeLong(wakelockTimeMs);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof Anomaly)) {
return false;
}
Anomaly other = (Anomaly) obj;
return type == other.type
&& uid == other.uid
&& wakelockTimeMs == other.wakelockTimeMs
&& TextUtils.equals(displayName, other.displayName)
&& TextUtils.equals(packageName, other.packageName);
}
@Override
public int hashCode() {
return Objects.hash(type, uid, displayName, packageName, wakelockTimeMs);
}
public static final Parcelable.Creator CREATOR = new Parcelable.Creator() {
public Anomaly createFromParcel(Parcel in) {
return new Anomaly(in);
@@ -100,7 +125,7 @@ public class Anomaly implements Parcelable {
@AnomalyType
private int mType;
private int mUid;
private String mDisplayName;
private CharSequence mDisplayName;
private String mPackageName;
private long mWakeLockTimeMs;
@@ -114,7 +139,7 @@ public class Anomaly implements Parcelable {
return this;
}
public Builder setDisplayName(String displayName) {
public Builder setDisplayName(CharSequence displayName) {
mDisplayName = displayName;
return this;
}

7
src/com/android/settings/fuelgauge/anomaly/AnomalyLoader.java
View File

@@ -39,13 +39,16 @@ public class AnomalyLoader extends AsyncLoader<List<Anomaly>> {
}
@Override
protected void onDiscardResult(List<Anomaly> result) {}
protected void onDiscardResult(List<Anomaly> result) {
}
@Override
public List<Anomaly> loadInBackground() {
final List<Anomaly> anomalies = new ArrayList<>();
anomalies.addAll(new WakeLockAnomalyDetector().detectAnomalies(mBatteryStatsHelper));
anomalies.addAll(new WakeLockAnomalyDetector(getContext())
.detectAnomalies(mBatteryStatsHelper));
return anomalies;
}
}

8
src/com/android/settings/fuelgauge/anomaly/AnomalyPreferenceController.java
View File

@@ -20,6 +20,8 @@ import android.support.annotation.VisibleForTesting;
import android.support.v14.preference.PreferenceFragment;
import android.support.v7.preference.Preference;
import com.android.settings.R;
import java.util.List;
/**
@@ -66,8 +68,10 @@ public class AnomalyPreferenceController {
public void updateAnomalyPreference(List<Anomaly> anomalies) {
mAnomalies = anomalies;
mAnomalyPreference.setVisible(true);
//TODO(b/36924669): update summary for anomaly preference
if (!mAnomalies.isEmpty()) {
mAnomalyPreference.setVisible(true);
//TODO(b/36924669): update summary for anomaly preference
}
}
public void hideAnomalyPreference() {

83
src/com/android/settings/fuelgauge/anomaly/checker/WakeLockAnomalyDetector.java
View File

@@ -16,7 +16,20 @@
package com.android.settings.fuelgauge.anomaly.checker;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.os.BatteryStats;
import android.os.SystemClock;
import android.support.annotation.VisibleForTesting;
import android.text.format.DateUtils;
import android.util.ArrayMap;
import android.util.Log;
import com.android.internal.os.BatterySipper;
import com.android.internal.os.BatteryStatsHelper;
import com.android.settings.Utils;
import com.android.settings.fuelgauge.BatteryUtils;
import com.android.settings.fuelgauge.anomaly.Anomaly;
import java.util.ArrayList;
@@ -26,11 +39,79 @@ import java.util.List;
* Check whether apps holding wakelock too long
*/
public class WakeLockAnomalyDetector implements AnomalyDetector {
private static final String TAG = "WakeLockAnomalyChecker";
// TODO: get threshold form server side
private static final long WAKE_LOCK_THRESHOLD_MS = 2 * DateUtils.MINUTE_IN_MILLIS;
private PackageManager mPackageManager;
private Context mContext;
@VisibleForTesting
BatteryUtils mBatteryUtils;
public WakeLockAnomalyDetector(Context context) {
mContext = context;
mPackageManager = context.getPackageManager();
mBatteryUtils = BatteryUtils.getInstance(context);
}
@Override
public List<Anomaly> detectAnomalies(BatteryStatsHelper batteryStatsHelper) {
//TODO(b/36921529): check anomaly using the batteryStatsHelper
final List<BatterySipper> batterySippers = batteryStatsHelper.getUsageList();
final List<Anomaly> anomalies = new ArrayList<>();
final long rawRealtime = SystemClock.elapsedRealtime();
// Check the app one by one
for (int i = 0, size = batterySippers.size(); i < size; i++) {
final BatterySipper sipper = batterySippers.get(i);
final BatteryStats.Uid uid = sipper.uidObj;
if (uid == null) {
continue;
}
final ArrayMap<String, ? extends BatteryStats.Uid.Wakelock> wakelocks =
uid.getWakelockStats();
long maxPartialWakeLockMs = 0;
for (int iw = wakelocks.size() - 1; iw >= 0; iw--) {
final BatteryStats.Timer timer = wakelocks.valueAt(iw).getWakeTime(
BatteryStats.WAKE_TYPE_PARTIAL);
if (timer == null) {
continue;
}
maxPartialWakeLockMs = Math.max(maxPartialWakeLockMs,
getTotalDurationMs(timer, rawRealtime));
}
// Report it if wakelock time is too long and it is not a hidden batterysipper
// TODO: add more attributes to detect wakelock anomaly
if (maxPartialWakeLockMs > WAKE_LOCK_THRESHOLD_MS
&& !mBatteryUtils.shouldHideSipper(sipper)) {
final String packageName = getPackageName(uid.getUid());
final CharSequence displayName = Utils.getApplicationLabel(mContext,
packageName);
Anomaly anomaly = new Anomaly.Builder()
.setUid(uid.getUid())
.setType(Anomaly.AnomalyType.WAKE_LOCK)
.setDisplayName(displayName)
.setPackageName(packageName)
.build();
anomalies.add(anomaly);
}
}
return anomalies;
}
private String getPackageName(int uid) {
final String[] packageNames = mPackageManager.getPackagesForUid(uid);
return packageNames == null ? null : packageNames[0];
}
@VisibleForTesting
long getTotalDurationMs(BatteryStats.Timer timer, long rawRealtime) {
if (timer == null) {
return 0;
}
return timer.getTotalDurationMsLocked(rawRealtime);
}
}