Merge "Cache default home" (4d6bfce2) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/slice/SliceManagerService.java

+69 −5

Original line number	Diff line number	Diff line
		@@ -28,6 +28,8 @@ import static android.os.Process.SYSTEM_UID;
		import android.Manifest.permission;
		import android.annotation.NonNull;
		import android.app.AppOpsManager;
		import android.app.role.OnRoleHoldersChangedListener;
		import android.app.role.RoleManager;
		import android.app.slice.ISliceManager;
		import android.app.slice.SliceSpec;
		import android.app.usage.UsageStatsManagerInternal;
		@@ -77,6 +79,7 @@ import java.io.IOException;
		import java.util.ArrayList;
		import java.util.List;
		import java.util.Objects;
		import java.util.concurrent.Executor;
		import java.util.function.Supplier;

		public class SliceManagerService extends ISliceManager.Stub {
		@@ -121,6 +124,7 @@ public class SliceManagerService extends ISliceManager.Stub {
		filter.addAction(Intent.ACTION_PACKAGE_DATA_CLEARED);
		filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
		filter.addDataScheme("package");
		mRoleObserver = new RoleObserver();
		mContext.registerReceiverAsUser(mReceiver, UserHandle.ALL, filter, null, mHandler);
		}

		@@ -478,10 +482,26 @@ public class SliceManagerService extends ISliceManager.Stub {
		return cn.getPackageName();
		}

		/**
		* A cached value of the default home app
		*/
		private String mCachedDefaultHome = null;

		// Based on getDefaultHome in ShortcutService.
		// TODO: Unify if possible
		@VisibleForTesting
		protected String getDefaultHome(int userId) {

		// Set VERIFY to true to run the cache in "shadow" mode for cache
		// testing. Do not commit set to true;
		final boolean VERIFY = false;

		if (mCachedDefaultHome != null) {
		if (!VERIFY) {
		return mCachedDefaultHome;
		}
		}

		final long token = Binder.clearCallingIdentity();
		try {
		final List<ResolveInfo> allHomeCandidates = new ArrayList<>();
		@@ -490,10 +510,12 @@ public class SliceManagerService extends ISliceManager.Stub {
		final ComponentName defaultLauncher = mPackageManagerInternal
		.getHomeActivitiesAsUser(allHomeCandidates, userId);

		ComponentName detected = null;
		if (defaultLauncher != null) {
		detected = defaultLauncher;
		}
		ComponentName detected = defaultLauncher;

		// Cache the default launcher. It is not a problem if the
		// launcher is null - eventually, the default launcher will be
		// set to something non-null.
		mCachedDefaultHome = ((detected != null) ? detected.getPackageName() : null);

		if (detected == null) {
		// If we reach here, that means it's the first check since the user was created,
		@@ -517,12 +539,54 @@ public class SliceManagerService extends ISliceManager.Stub {
		lastPriority = ri.priority;
		}
		}
		return detected != null ? detected.getPackageName() : null;
		final String ret = ((detected != null) ? detected.getPackageName() : null);
		if (VERIFY) {
		if (mCachedDefaultHome != null && !mCachedDefaultHome.equals(ret)) {
		Slog.e(TAG, "getDefaultHome() cache failure, is " +
		mCachedDefaultHome + " should be " + ret);
		}
		}
		return ret;
		} finally {
		Binder.restoreCallingIdentity(token);
		}
		}

		public void invalidateCachedDefaultHome() {
		mCachedDefaultHome = null;
		}

		/**
		* Listen for changes in the roles, and invalidate the cached default
		* home as necessary.
		*/
		private RoleObserver mRoleObserver;

		class RoleObserver implements OnRoleHoldersChangedListener {
		private RoleManager mRm;
		private final Executor mExecutor;

		RoleObserver() {
		mExecutor = mContext.getMainExecutor();
		register();
		}

		public void register() {
		mRm = mContext.getSystemService(RoleManager.class);
		if (mRm != null) {
		mRm.addOnRoleHoldersChangedListenerAsUser(mExecutor, this, UserHandle.ALL);
		invalidateCachedDefaultHome();
		}
		}

		@Override
		public void onRoleHoldersChanged(@NonNull String roleName, @NonNull UserHandle user) {
		if (RoleManager.ROLE_HOME.equals(roleName)) {
		invalidateCachedDefaultHome();
		}
		}
		}

		private boolean isGrantedFullAccess(String pkg, int userId) {
		return mPermissions.hasFullAccess(pkg, userId);
		}