Merge "Create package-level last time usage stats for app hibernation" into sc-dev (eed24982) · Commits · e / os / android_frameworks_base

core/api/system-current.txt

+1 −0

Original line number	Diff line number	Diff line
		@@ -1847,6 +1847,7 @@ package android.app.usage {
		public final class UsageStatsManager {
		method @RequiresPermission(android.Manifest.permission.PACKAGE_USAGE_STATS) public int getAppStandbyBucket(String);
		method @RequiresPermission(android.Manifest.permission.PACKAGE_USAGE_STATS) public java.util.Map<java.lang.String,java.lang.Integer> getAppStandbyBuckets();
		method @RequiresPermission(allOf={android.Manifest.permission.INTERACT_ACROSS_USERS, android.Manifest.permission.PACKAGE_USAGE_STATS}) public long getLastTimeAnyComponentUsed(@NonNull String);
		method public int getUsageSource();
		method @RequiresPermission(android.Manifest.permission.BIND_CARRIER_SERVICES) public void onCarrierPrivilegedAppsChanged();
		method @RequiresPermission(allOf={android.Manifest.permission.SUSPEND_APPS, android.Manifest.permission.OBSERVE_APP_USAGE}) public void registerAppUsageLimitObserver(int, @NonNull String[], @NonNull java.time.Duration, @NonNull java.time.Duration, @Nullable android.app.PendingIntent);

core/java/android/app/usage/IUsageStatsManager.aidl

+1 −0

Original line number	Diff line number	Diff line
		@@ -67,4 +67,5 @@ interface IUsageStatsManager {
		void reportUsageStop(in IBinder activity, String token, String callingPackage);
		int getUsageSource();
		void forceUsageSourceSettingRead();
		long getLastTimeAnyComponentUsed(String packageName);
		}

core/java/android/app/usage/UsageStatsManager.java

+29 −0

Original line number	Diff line number	Diff line
		@@ -1250,4 +1250,33 @@ public final class UsageStatsManager {
		} catch (RemoteException re) {
		}
		}

		/**
		* Get the last time a package is used by any users including explicit user interaction and
		* component usage, measured in milliseconds since the epoch and truncated to the boundary of
		* last day before the exact time. For packages that are never used, the time will be the epoch.
		* <p> Note that this usage stats is user-agnostic. </p>
		* <p>
		* Also note that component usage is only reported for component bindings (e.g. broadcast
		* receiver, service, content provider) and only when such a binding would cause an app to leave
		* the stopped state.
		* See {@link UsageEvents.Event.USER_INTERACTION}, {@link UsageEvents.Event.APP_COMPONENT_USED}.
		* </p>
		*
		* @param packageName The name of the package to be queried.
		* @return last time the queried package is used since the epoch.
		* @hide
		*/
		@SystemApi
		@RequiresPermission(allOf = {
		android.Manifest.permission.INTERACT_ACROSS_USERS,
		android.Manifest.permission.PACKAGE_USAGE_STATS})
		public long getLastTimeAnyComponentUsed(@NonNull String packageName) {
		// TODO(b/183462940): This usage data is not persisted to disk yet.
		try {
		return mService.getLastTimeAnyComponentUsed(packageName);
		} catch (RemoteException re) {
		throw re.rethrowFromSystemServer();
		}
		}
		}

services/tests/mockingservicestests/src/com/android/server/usage/UserUsageStatsServiceTest.java

+3 −1

Original line number	Diff line number	Diff line
		@@ -106,7 +106,9 @@ public class UserUsageStatsServiceTest {

		@Test
		public void testReportEvent_packageUsedEventNotTracked() {
		Event event = new Event(APP_COMPONENT_USED, SystemClock.elapsedRealtime());
		// For APP_COMPONENT_USED event, the time stamp should have been converted to current time
		// before reported here.
		Event event = new Event(APP_COMPONENT_USED, System.currentTimeMillis());
		event.mPackage = TEST_PACKAGE_NAME;
		mService.reportEvent(event);

services/usage/java/com/android/server/usage/UsageStatsService.java

+49 −0

Original line number	Diff line number	Diff line
		@@ -75,6 +75,7 @@ import android.os.SystemProperties;
		import android.os.UserHandle;
		import android.os.UserManager;
		import android.provider.Settings;
		import android.util.ArrayMap;
		import android.util.ArraySet;
		import android.util.AtomicFile;
		import android.util.Slog;
		@@ -109,8 +110,10 @@ import java.util.Arrays;
		import java.util.HashMap;
		import java.util.LinkedList;
		import java.util.List;
		import java.util.Map;
		import java.util.Set;
		import java.util.concurrent.CopyOnWriteArraySet;
		import java.util.concurrent.TimeUnit;

		/**
		* A service that collects, aggregates, and persists application usage data.
		@@ -166,6 +169,11 @@ public class UsageStatsService extends SystemService implements
		private final SparseIntArray mUidToKernelCounter = new SparseIntArray();
		int mUsageSource;

		private long mRealTimeSnapshot;
		private long mSystemTimeSnapshot;
		// A map storing last time global usage of packages, measured in milliseconds since the epoch.
		private final Map<String, Long> mLastTimeComponentUsedGlobal = new ArrayMap<>();

		/** Manages the standby state of apps. */
		AppStandbyInternal mAppStandby;

		@@ -279,6 +287,9 @@ public class UsageStatsService extends SystemService implements
		getContext().registerReceiverAsUser(new UserActionsReceiver(), UserHandle.ALL, filter,
		null, mHandler);

		mRealTimeSnapshot = SystemClock.elapsedRealtime();
		mSystemTimeSnapshot = System.currentTimeMillis();

		publishLocalService(UsageStatsManagerInternal.class, new LocalService());
		publishLocalService(AppStandbyInternal.class, mAppStandby);
		publishBinderServices();
		@@ -803,6 +814,28 @@ public class UsageStatsService extends SystemService implements
		}
		}

		/**
		* Assuming the event's timestamp is measured in milliseconds since boot,
		* convert it to a system wall time. System and real time snapshots are updated before
		* conversion.
		*/
		private void convertToSystemTimeLocked(Event event) {
		final long actualSystemTime = System.currentTimeMillis();
		if (ENABLE_TIME_CHANGE_CORRECTION) {
		final long actualRealtime = SystemClock.elapsedRealtime();
		final long expectedSystemTime =
		(actualRealtime - mRealTimeSnapshot) + mSystemTimeSnapshot;
		final long diffSystemTime = actualSystemTime - expectedSystemTime;
		if (Math.abs(diffSystemTime) > TIME_CHANGE_THRESHOLD_MILLIS) {
		// The time has changed.
		Slog.i(TAG, "Time changed in by " + (diffSystemTime / 1000) + " seconds");
		mRealTimeSnapshot = actualRealtime;
		mSystemTimeSnapshot = actualSystemTime;
		}
		}
		event.mTimeStamp = Math.max(0, event.mTimeStamp - mRealTimeSnapshot) + mSystemTimeSnapshot;
		}

		/**
		* Called by the Binder stub.
		*/
		@@ -940,6 +973,12 @@ public class UsageStatsService extends SystemService implements
		Slog.w(TAG, "Failed to note usage stop", iae);
		}
		break;
		case Event.USER_INTERACTION:
		// Fall through
		case Event.APP_COMPONENT_USED:
		convertToSystemTimeLocked(event);
		mLastTimeComponentUsedGlobal.put(event.mPackage, event.mTimeStamp);
		break;
		}

		final UserUsageStatsService service = getUserUsageStatsServiceLocked(userId);
		@@ -2094,6 +2133,16 @@ public class UsageStatsService extends SystemService implements
		public void forceUsageSourceSettingRead() {
		readUsageSourceSetting();
		}

		@Override
		public long getLastTimeAnyComponentUsed(String packageName) {
		synchronized (mLock) {
		// Truncate the returned milliseconds to the boundary of the last day before exact
		// time for privacy reasons.
		return mLastTimeComponentUsedGlobal.getOrDefault(packageName, 0L)
		/ TimeUnit.DAYS.toMillis(1) * TimeUnit.DAYS.toMillis(1);
		}
		}
		}

		void registerAppUsageObserver(int callingUid, int observerId, String[] packages,