Pushing state persistence to a background thread (039206a9) · Commits · e / os / android_frameworks_base

services/java/com/android/server/AppWidgetServiceImpl.java

+35 −12

Original line number	Diff line number	Diff line
		@@ -41,7 +41,10 @@ import android.net.Uri;
		import android.os.Binder;
		import android.os.Bundle;
		import android.os.Environment;
		import android.os.Handler;
		import android.os.HandlerThread;
		import android.os.IBinder;
		import android.os.Looper;
		import android.os.Process;
		import android.os.RemoteException;
		import android.os.SystemClock;
		@@ -180,6 +183,8 @@ class AppWidgetServiceImpl {
		boolean mStateLoaded;
		int mMaxWidgetBitmapMemory;

		private final Handler mSaveStateHandler;

		// These are for debugging only -- widgets are going missing in some rare instances
		ArrayList<Provider> mDeletedProviders = new ArrayList<Provider>();
		ArrayList<Host> mDeletedHosts = new ArrayList<Host>();
		@@ -189,6 +194,10 @@ class AppWidgetServiceImpl {
		mPm = AppGlobals.getPackageManager();
		mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE);
		mUserId = userId;

		HandlerThread handlerThread = new HandlerThread("AppWidgetServiceImpl -- Save state");
		handlerThread.start();
		mSaveStateHandler = new Handler(handlerThread.getLooper());
		computeMaximumWidgetBitmapMemory();
		}

		@@ -236,7 +245,7 @@ class AppWidgetServiceImpl {
		updateProvidersForPackageLocked(cn.getPackageName(), removedProviders);
		}
		}
		saveStateLocked();
		saveStateAsync();
		}
		}
		}
		@@ -286,7 +295,7 @@ class AppWidgetServiceImpl {
		providersModified \|= addProvidersForPackageLocked(pkgName);
		}
		}
		saveStateLocked();
		saveStateAsync();
		}
		} else {
		Bundle extras = intent.getExtras();
		@@ -297,7 +306,7 @@ class AppWidgetServiceImpl {
		ensureStateLoadedLocked();
		for (String pkgName : pkgList) {
		providersModified \|= removeProvidersForPackageLocked(pkgName);
		saveStateLocked();
		saveStateAsync();
		}
		}
		}
		@@ -411,7 +420,7 @@ class AppWidgetServiceImpl {

		private void ensureStateLoadedLocked() {
		if (!mStateLoaded) {
		loadAppWidgetList();
		loadAppWidgetListLocked();
		loadStateLocked();
		mStateLoaded = true;
		}
		@@ -432,7 +441,7 @@ class AppWidgetServiceImpl {
		host.instances.add(id);
		mAppWidgetIds.add(id);

		saveStateLocked();
		saveStateAsync();
		if (DBG) log("Allocating AppWidgetId for " + packageName + " host=" + hostId
		+ " id=" + appWidgetId);
		return appWidgetId;
		@@ -445,7 +454,7 @@ class AppWidgetServiceImpl {
		AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId);
		if (id != null) {
		deleteAppWidgetLocked(id);
		saveStateLocked();
		saveStateAsync();
		}
		}
		}
		@@ -457,7 +466,7 @@ class AppWidgetServiceImpl {
		Host host = lookupHostLocked(callingUid, hostId);
		if (host != null) {
		deleteHostLocked(host);
		saveStateLocked();
		saveStateAsync();
		}
		}
		}
		@@ -476,7 +485,7 @@ class AppWidgetServiceImpl {
		}
		}
		if (changed) {
		saveStateLocked();
		saveStateAsync();
		}
		}
		}
		@@ -592,7 +601,7 @@ class AppWidgetServiceImpl {

		// schedule the future updates
		registerForBroadcastsLocked(p, getAppWidgetIds(p));
		saveStateLocked();
		saveStateAsync();
		}
		} finally {
		Binder.restoreCallingIdentity(ident);
		@@ -656,8 +665,8 @@ class AppWidgetServiceImpl {
		} else {
		mPackagesWithBindWidgetPermission.remove(packageName);
		}
		saveStateAsync();
		}
		saveStateLocked();
		}

		// Binds to a specific RemoteViewsService
		@@ -894,6 +903,20 @@ class AppWidgetServiceImpl {
		}
		}

		private void saveStateAsync() {
		mSaveStateHandler.post(mSaveStateRunnable);
		}

		private final Runnable mSaveStateRunnable = new Runnable() {
		@Override
		public void run() {
		synchronized (mAppWidgetIds) {
		ensureStateLoadedLocked();
		saveStateLocked();
		}
		}
		};

		public void updateAppWidgetOptions(int appWidgetId, Bundle options) {
		synchronized (mAppWidgetIds) {
		options = cloneIfLocalBinder(options);
		@@ -914,7 +937,7 @@ class AppWidgetServiceImpl {
		intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, id.appWidgetId);
		intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_OPTIONS, id.options);
		mContext.sendBroadcastAsUser(intent, new UserHandle(mUserId));
		saveStateLocked();
		saveStateAsync();
		}
		}

		@@ -1215,7 +1238,7 @@ class AppWidgetServiceImpl {
		}
		}

		void loadAppWidgetList() {
		void loadAppWidgetListLocked() {
		Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
		try {
		List<ResolveInfo> broadcastReceivers = mPm.queryIntentReceivers(intent,