Stop previous user's packages early during user switch (edef883a) · Commits · e / os / android_frameworks_base

core/java/android/app/ActivityManagerInternal.java

+11 −0

Original line number	Diff line number	Diff line
		@@ -959,6 +959,17 @@ public abstract class ActivityManagerInternal {
		public abstract void setVoiceInteractionManagerProvider(
		@Nullable VoiceInteractionManagerProvider provider);

		/**
		* Get whether or not the previous user's packages will be killed before the user is
		* stopped during a user switch.
		*
		* <p> The primary use case of this method is for {@link com.android.server.SystemService}
		* classes to call this API in their
		* {@link com.android.server.SystemService#onUserSwitching} method implementation to prevent
		* restarting any of the previous user's processes that will be killed during the user switch.
		*/
		public abstract boolean isEarlyPackageKillEnabledForUserSwitch(int fromUserId, int toUserId);

		/**
		* Sets whether the current foreground user (and its profiles) should be stopped after switched
		* out.

core/java/android/content/pm/multiuser.aconfig

+7 −0

Original line number	Diff line number	Diff line
		@@ -267,6 +267,13 @@ flag {
		bug: "330351042"
		}

		flag {
		name: "stop_previous_user_apps"
		namespace: "multiuser"
		description: "Stop the previous user apps early in a user switch"
		bug: "323200731"
		}

		flag {
		name: "disable_private_space_items_on_home"
		namespace: "profile_experiences"

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

+16 −3

Original line number	Diff line number	Diff line
		@@ -6961,7 +6961,8 @@ public final class ActiveServices {
		}

		private boolean collectPackageServicesLocked(String packageName, Set<String> filterByClasses,
		boolean evenPersistent, boolean doit, ArrayMap<ComponentName, ServiceRecord> services) {
		boolean evenPersistent, boolean doit, int minOomAdj,
		ArrayMap<ComponentName, ServiceRecord> services) {
		boolean didSomething = false;
		for (int i = services.size() - 1; i >= 0; i--) {
		ServiceRecord service = services.valueAt(i);
		@@ -6969,6 +6970,11 @@ public final class ActiveServices {
		\|\| (service.packageName.equals(packageName)
		&& (filterByClasses == null
		\|\| filterByClasses.contains(service.name.getClassName())));
		if (service.app != null && service.app.mState.getCurAdj() < minOomAdj) {
		Slog.i(TAG, "Skip force stopping service " + service
		+ ": below minimum oom adj level");
		continue;
		}
		if (sameComponent
		&& (service.app == null \|\| evenPersistent \|\| !service.app.isPersistent())) {
		if (!doit) {
		@@ -6992,6 +6998,12 @@ public final class ActiveServices {

		boolean bringDownDisabledPackageServicesLocked(String packageName, Set<String> filterByClasses,
		int userId, boolean evenPersistent, boolean fullStop, boolean doit) {
		return bringDownDisabledPackageServicesLocked(packageName, filterByClasses, userId,
		evenPersistent, fullStop, doit, ProcessList.INVALID_ADJ);
		}

		boolean bringDownDisabledPackageServicesLocked(String packageName, Set<String> filterByClasses,
		int userId, boolean evenPersistent, boolean fullStop, boolean doit, int minOomAdj) {
		boolean didSomething = false;

		if (mTmpCollectionResults != null) {
		@@ -7001,7 +7013,8 @@ public final class ActiveServices {
		if (userId == UserHandle.USER_ALL) {
		for (int i = mServiceMap.size() - 1; i >= 0; i--) {
		didSomething \|= collectPackageServicesLocked(packageName, filterByClasses,
		evenPersistent, doit, mServiceMap.valueAt(i).mServicesByInstanceName);
		evenPersistent, doit, minOomAdj,
		mServiceMap.valueAt(i).mServicesByInstanceName);
		if (!doit && didSomething) {
		return true;
		}
		@@ -7014,7 +7027,7 @@ public final class ActiveServices {
		if (smap != null) {
		ArrayMap<ComponentName, ServiceRecord> items = smap.mServicesByInstanceName;
		didSomething = collectPackageServicesLocked(packageName, filterByClasses,
		evenPersistent, doit, items);
		evenPersistent, doit, minOomAdj, items);
		}
		if (doit && filterByClasses == null) {
		forceStopPackageLocked(packageName, userId);

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

+28 −3

Original line number	Diff line number	Diff line
		@@ -4368,6 +4368,16 @@ public class ActivityManagerService extends IActivityManager.Stub
		}
		}

		@GuardedBy("this")
		final boolean forceStopUserPackagesLocked(int userId, String reasonString,
		boolean evenImportantServices) {
		int minOomAdj = evenImportantServices ? ProcessList.INVALID_ADJ
		: ProcessList.FOREGROUND_APP_ADJ;
		return forceStopPackageInternalLocked(null, -1, false, false,
		true, false, false, false, userId, reasonString,
		ApplicationExitInfo.REASON_USER_STOPPED, minOomAdj);
		}

		@GuardedBy("this")
		final boolean forceStopPackageLocked(String packageName, int appId,
		boolean callerWillRestart, boolean purgeCache, boolean doit,
		@@ -4377,7 +4387,6 @@ public class ActivityManagerService extends IActivityManager.Stub
		: ApplicationExitInfo.REASON_USER_REQUESTED;
		return forceStopPackageLocked(packageName, appId, callerWillRestart, purgeCache, doit,
		evenPersistent, uninstalling, packageStateStopped, userId, reasonString, reason);

		}

		@GuardedBy("this")
		@@ -4385,6 +4394,16 @@ public class ActivityManagerService extends IActivityManager.Stub
		boolean callerWillRestart, boolean purgeCache, boolean doit,
		boolean evenPersistent, boolean uninstalling, boolean packageStateStopped,
		int userId, String reasonString, int reason) {
		return forceStopPackageInternalLocked(packageName, appId, callerWillRestart, purgeCache,
		doit, evenPersistent, uninstalling, packageStateStopped, userId, reasonString,
		reason, ProcessList.INVALID_ADJ);
		}

		@GuardedBy("this")
		private boolean forceStopPackageInternalLocked(String packageName, int appId,
		boolean callerWillRestart, boolean purgeCache, boolean doit,
		boolean evenPersistent, boolean uninstalling, boolean packageStateStopped,
		int userId, String reasonString, int reason, int minOomAdj) {
		int i;

		if (userId == UserHandle.USER_ALL && packageName == null) {
		@@ -4423,7 +4442,7 @@ public class ActivityManagerService extends IActivityManager.Stub
		}

		didSomething \|= mProcessList.killPackageProcessesLSP(packageName, appId, userId,
		ProcessList.INVALID_ADJ, callerWillRestart, false /* allowRestart */, doit,
		minOomAdj, callerWillRestart, false /* allowRestart */, doit,
		evenPersistent, true /* setRemoved */, uninstalling,
		reason,
		subReason,
		@@ -4432,7 +4451,8 @@ public class ActivityManagerService extends IActivityManager.Stub
		}

		if (mServices.bringDownDisabledPackageServicesLocked(
		packageName, null /* filterByClasses */, userId, evenPersistent, true, doit)) {
		packageName, null /* filterByClasses */, userId, evenPersistent,
		true, doit, minOomAdj)) {
		if (!doit) {
		return true;
		}
		@@ -19846,6 +19866,11 @@ public class ActivityManagerService extends IActivityManager.Stub
		ActivityManagerService.this.setVoiceInteractionManagerProvider(provider);
		}

		@Override
		public boolean isEarlyPackageKillEnabledForUserSwitch(int fromUserId, int toUserId) {
		return mUserController.isEarlyPackageKillEnabledForUserSwitch(fromUserId, toUserId);
		}

		@Override
		public void setStopUserOnSwitch(int value) {
		ActivityManagerService.this.setStopUserOnSwitch(value);

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

+57 −9

Original line number	Diff line number	Diff line
		@@ -439,6 +439,15 @@ class UserController implements Handler.Callback {
		@GuardedBy("mLock")
		private final List<PendingUserStart> mPendingUserStarts = new ArrayList<>();

		/**
		* Contains users which cannot abort the shutdown process.
		*
		* <p> For example, we don't abort shutdown for users whose processes have already been stopped
		* due to {@link #isEarlyPackageKillEnabledForUserSwitch(int, int)}.
		*/
		@GuardedBy("mLock")
		private final ArraySet<Integer> mDoNotAbortShutdownUserIds = new ArraySet<>();

		private final UserLifecycleListener mUserLifecycleListener = new UserLifecycleListener() {
		@Override
		public void onUserCreated(UserInfo user, Object token) {
		@@ -509,11 +518,11 @@ class UserController implements Handler.Callback {
		}
		}

		private boolean shouldStopUserOnSwitch() {
		private boolean isStopUserOnSwitchEnabled() {
		synchronized (mLock) {
		if (mStopUserOnSwitch != STOP_USER_ON_SWITCH_DEFAULT) {
		final boolean value = mStopUserOnSwitch == STOP_USER_ON_SWITCH_TRUE;
		Slogf.i(TAG, "shouldStopUserOnSwitch(): returning overridden value (%b)", value);
		Slogf.i(TAG, "isStopUserOnSwitchEnabled(): returning overridden value (%b)", value);
		return value;
		}
		}
		@@ -521,6 +530,26 @@ class UserController implements Handler.Callback {
		return property == -1 ? mDelayUserDataLocking : property == 1;
		}

		/**
		* Get whether or not the previous user's packages will be killed before the user is
		* stopped during a user switch.
		*
		* <p> The primary use case of this method is for {@link com.android.server.SystemService}
		* classes to call this API in their
		* {@link com.android.server.SystemService#onUserSwitching} method implementation to prevent
		* restarting any of the previous user's processes that will be killed during the user switch.
		*/
		boolean isEarlyPackageKillEnabledForUserSwitch(int fromUserId, int toUserId) {
		// NOTE: The logic in this method could be extended to cover other cases where
		// the previous user is also stopped like: guest users, ephemeral users,
		// and users with DISALLOW_RUN_IN_BACKGROUND. Currently, this is not done
		// because early killing is not enabled for these cases by default.
		if (fromUserId == UserHandle.USER_SYSTEM) {
		return false;
		}
		return isStopUserOnSwitchEnabled();
		}

		void finishUserSwitch(UserState uss) {
		// This call holds the AM lock so we post to the handler.
		mHandler.post(() -> {
		@@ -1247,6 +1276,7 @@ class UserController implements Handler.Callback {
		return;
		}
		uss.setState(UserState.STATE_SHUTDOWN);
		mDoNotAbortShutdownUserIds.remove(userId);
		}
		TimingsTraceAndSlog t = new TimingsTraceAndSlog();
		t.traceBegin("setUserState-STATE_SHUTDOWN-" + userId + "-[stopUser]");
		@@ -1555,7 +1585,8 @@ class UserController implements Handler.Callback {

		private void stopPackagesOfStoppedUser(@UserIdInt int userId, String reason) {
		if (DEBUG_MU) Slogf.i(TAG, "stopPackagesOfStoppedUser(%d): %s", userId, reason);
		mInjector.activityManagerForceStopPackage(userId, reason);
		mInjector.activityManagerForceStopUserPackages(userId, reason,
		/* evenImportantServices= */ true);
		if (mInjector.getUserManager().isPreCreated(userId)) {
		// Don't fire intent for precreated.
		return;
		@@ -1608,6 +1639,21 @@ class UserController implements Handler.Callback {
		}
		}

		private void stopPreviousUserPackagesIfEnabled(int fromUserId, int toUserId) {
		if (!android.multiuser.Flags.stopPreviousUserApps()
		\|\| !isEarlyPackageKillEnabledForUserSwitch(fromUserId, toUserId)) {
		return;
		}
		// Stop the previous user's packages early to reduce resource usage
		// during user switching. Only do this when the previous user will
		// be stopped regardless.
		synchronized (mLock) {
		mDoNotAbortShutdownUserIds.add(fromUserId);
		}
		mInjector.activityManagerForceStopUserPackages(fromUserId,
		"early stop user packages", /* evenImportantServices= */ false);
		}

		void scheduleStartProfiles() {
		// Parent user transition to RUNNING_UNLOCKING happens on FgThread, so it is busy, there is
		// a chance the profile will reach RUNNING_LOCKED while parent is still locked, so no
		@@ -1889,7 +1935,8 @@ class UserController implements Handler.Callback {
		updateStartedUserArrayLU();
		needStart = true;
		updateUmState = true;
		} else if (uss.state == UserState.STATE_SHUTDOWN) {
		} else if (uss.state == UserState.STATE_SHUTDOWN
		\|\| mDoNotAbortShutdownUserIds.contains(userId)) {
		Slogf.i(TAG, "User #" + userId
		+ " is shutting down - will start after full shutdown");
		mPendingUserStarts.add(new PendingUserStart(userId, userStartMode,
		@@ -2293,7 +2340,7 @@ class UserController implements Handler.Callback {
		hasUserRestriction(UserManager.DISALLOW_RUN_IN_BACKGROUND, oldUserId);
		synchronized (mLock) {
		// If running in background is disabled or mStopUserOnSwitch mode, stop the user.
		if (hasRestriction \|\| shouldStopUserOnSwitch()) {
		if (hasRestriction \|\| isStopUserOnSwitchEnabled()) {
		Slogf.i(TAG, "Stopping user %d and its profiles on user switch", oldUserId);
		stopUsersLU(oldUserId, /* allowDelayedLocking= */ false, null, null);
		return;
		@@ -3425,7 +3472,7 @@ class UserController implements Handler.Callback {
		pw.println(" mLastActiveUsersForDelayedLocking:" + mLastActiveUsersForDelayedLocking);
		pw.println(" mDelayUserDataLocking:" + mDelayUserDataLocking);
		pw.println(" mAllowUserUnlocking:" + mAllowUserUnlocking);
		pw.println(" shouldStopUserOnSwitch():" + shouldStopUserOnSwitch());
		pw.println(" isStopUserOnSwitchEnabled():" + isStopUserOnSwitchEnabled());
		pw.println(" mStopUserOnSwitch:" + mStopUserOnSwitch);
		pw.println(" mMaxRunningUsers:" + mMaxRunningUsers);
		pw.println(" mBackgroundUserScheduledStopTimeSecs:"
		@@ -3522,6 +3569,7 @@ class UserController implements Handler.Callback {
		Integer.toString(msg.arg1), msg.arg1);

		mInjector.getSystemServiceManager().onUserSwitching(msg.arg2, msg.arg1);
		stopPreviousUserPackagesIfEnabled(msg.arg2, msg.arg1);
		scheduleOnUserCompletedEvent(msg.arg1,
		UserCompletedEventType.EVENT_TYPE_USER_SWITCHING,
		USER_COMPLETED_EVENT_DELAY_MS);
		@@ -3896,10 +3944,10 @@ class UserController implements Handler.Callback {
		}.sendNext();
		}

		void activityManagerForceStopPackage(@UserIdInt int userId, String reason) {
		void activityManagerForceStopUserPackages(@UserIdInt int userId, String reason,
		boolean evenImportantServices) {
		synchronized (mService) {
		mService.forceStopPackageLocked(null, -1, false, false, true, false, false, false,
		userId, reason);
		mService.forceStopUserPackagesLocked(userId, reason, evenImportantServices);
		}
		};