Binder cache for isUserUnlocked(). (ebe2a0ba) · Commits · e / os / android_frameworks_base

core/java/android/os/UserManager.java

+28 −5

Original line number	Diff line number	Diff line
		@@ -34,6 +34,7 @@ import android.annotation.WorkerThread;
		import android.app.Activity;
		import android.app.ActivityManager;
		import android.app.admin.DevicePolicyManager;
		import android.app.PropertyInvalidatedCache;
		import android.compat.annotation.UnsupportedAppUsage;
		import android.content.ComponentName;
		import android.content.Context;
		@@ -2150,16 +2151,38 @@ public class UserManager {
		return isUserUnlocked(user.getIdentifier());
		}

		private static final String CACHE_KEY_IS_USER_UNLOCKED_PROPERTY =
		"cache_key.is_user_unlocked";

		private final PropertyInvalidatedCache<Integer, Boolean> mIsUserUnlockedCache =
		new PropertyInvalidatedCache<Integer, Boolean>(
		32, CACHE_KEY_IS_USER_UNLOCKED_PROPERTY) {
		@Override
		protected Boolean recompute(Integer query) {
		try {
		return mService.isUserUnlocked(query);
		} catch (RemoteException re) {
		throw re.rethrowFromSystemServer();
		}
		}
		};

		/** {@hide} */
		@UnsupportedAppUsage
		@RequiresPermission(anyOf = {Manifest.permission.MANAGE_USERS,
		Manifest.permission.INTERACT_ACROSS_USERS}, conditional = true)
		public boolean isUserUnlocked(@UserIdInt int userId) {
		try {
		return mService.isUserUnlocked(userId);
		} catch (RemoteException re) {
		throw re.rethrowFromSystemServer();
		return mIsUserUnlockedCache.query(userId);
		}

		/** {@hide} */
		public void disableIsUserUnlockedCache() {
		mIsUserUnlockedCache.disableLocal();
		}

		/** {@hide} */
		public static final void invalidateIsUserUnlockedCache() {
		PropertyInvalidatedCache.invalidateCache(CACHE_KEY_IS_USER_UNLOCKED_PROPERTY);
		}

		/**

services/core/java/com/android/server/StorageManagerService.java

+39 −5

Original line number	Diff line number	Diff line
		@@ -342,9 +342,43 @@ class StorageManagerService extends IStorageManager.Stub
		*/
		private final Object mPackagesLock = new Object();

		/**
		* mLocalUnlockedUsers affects the return value of isUserUnlocked. If
		* any value in the array changes, then the binder cache for
		* isUserUnlocked must be invalidated. When adding mutating methods to
		* WatchedLockedUsers, be sure to invalidate the cache in the new
		* methods.
		*/
		private class WatchedLockedUsers {
		private int[] users = EmptyArray.INT;
		public WatchedLockedUsers() {
		}
		public void append(int userId) {
		users = ArrayUtils.appendInt(users, userId);
		invalidateIsUserUnlockedCache();
		}
		public void remove(int userId) {
		users = ArrayUtils.removeInt(users, userId);
		invalidateIsUserUnlockedCache();
		}
		public boolean contains(int userId) {
		return ArrayUtils.contains(users, userId);
		}
		public int[] all() {
		return users;
		}
		@Override
		public String toString() {
		return Arrays.toString(users);
		}
		private void invalidateIsUserUnlockedCache() {
		UserManager.invalidateIsUserUnlockedCache();
		}
		}

		/** Set of users that we know are unlocked. */
		@GuardedBy("mLock")
		private int[] mLocalUnlockedUsers = EmptyArray.INT;
		private WatchedLockedUsers mLocalUnlockedUsers = new WatchedLockedUsers();
		/** Set of users that system knows are unlocked. */
		@GuardedBy("mLock")
		private int[] mSystemUnlockedUsers = EmptyArray.INT;
		@@ -3042,7 +3076,7 @@ class StorageManagerService extends IStorageManager.Stub
		}

		synchronized (mLock) {
		mLocalUnlockedUsers = ArrayUtils.appendInt(mLocalUnlockedUsers, userId);
		mLocalUnlockedUsers.append(userId);
		}
		}

		@@ -3058,14 +3092,14 @@ class StorageManagerService extends IStorageManager.Stub
		}

		synchronized (mLock) {
		mLocalUnlockedUsers = ArrayUtils.removeInt(mLocalUnlockedUsers, userId);
		mLocalUnlockedUsers.remove(userId);
		}
		}

		@Override
		public boolean isUserKeyUnlocked(int userId) {
		synchronized (mLock) {
		return ArrayUtils.contains(mLocalUnlockedUsers, userId);
		return mLocalUnlockedUsers.contains(userId);
		}
		}

		@@ -4177,7 +4211,7 @@ class StorageManagerService extends IStorageManager.Stub
		}

		pw.println();
		pw.println("Local unlocked users: " + Arrays.toString(mLocalUnlockedUsers));
		pw.println("Local unlocked users: " + mLocalUnlockedUsers);
		pw.println("System unlocked users: " + Arrays.toString(mSystemUnlockedUsers));

		final ContentResolver cr = mContext.getContentResolver();

services/core/java/com/android/server/pm/UserManagerService.java

+40 −1

Original line number	Diff line number	Diff line
		@@ -462,8 +462,42 @@ public class UserManagerService extends IUserManager.Stub {
		@GuardedBy("mUsersLock")
		private boolean mForceEphemeralUsers;

		/**
		* The member mUserStates affects the return value of isUserUnlocked.
		* If any value in mUserStates changes, then the binder cache for
		* isUserUnlocked must be invalidated. When adding mutating methods to
		* WatchedUserStates, be sure to invalidate the cache in the new
		* methods.
		*/
		private class WatchedUserStates {
		final SparseIntArray states;
		public WatchedUserStates() {
		states = new SparseIntArray();
		}
		public int get(int userId) {
		return states.get(userId);
		}
		public int get(int userId, int fallback) {
		return states.indexOfKey(userId) >= 0 ? states.get(userId) : fallback;
		}
		public void put(int userId, int state) {
		states.put(userId, state);
		invalidateIsUserUnlockedCache();
		}
		public void delete(int userId) {
		states.delete(userId);
		invalidateIsUserUnlockedCache();
		}
		@Override
		public String toString() {
		return states.toString();
		}
		private void invalidateIsUserUnlockedCache() {
		UserManager.invalidateIsUserUnlockedCache();
		}
		}
		@GuardedBy("mUserStates")
		private final SparseIntArray mUserStates = new SparseIntArray();
		private final WatchedUserStates mUserStates = new WatchedUserStates();

		private static UserManagerService sInstance;

		@@ -4801,6 +4835,11 @@ public class UserManagerService extends IUserManager.Stub {
		\|\| (state == UserState.STATE_RUNNING_UNLOCKED);
		}

		/**
		* The return values of this method are cached in clients. If the
		* logic in this function changes then the cache invalidation code
		* may need to be revisited.
		*/
		@Override
		public boolean isUserUnlocked(@UserIdInt int userId) {
		int state;