Fix an NPE and possible unsynchronized call of Locked method. (ee172414) · Commits · e / os / android_frameworks_base

services/java/com/android/server/wm/InputMonitor.java

+18 −15

Original line number	Diff line number	Diff line
		@@ -87,26 +87,29 @@ final class InputMonitor implements InputManagerService.Callbacks {
		public long notifyANR(InputApplicationHandle inputApplicationHandle,
		InputWindowHandle inputWindowHandle) {
		AppWindowToken appWindowToken = null;
		if (inputWindowHandle != null) {
		synchronized (mService.mWindowMap) {
		WindowState windowState = (WindowState) inputWindowHandle.windowState;
		WindowState windowState = null;
		if (inputWindowHandle != null) {
		windowState = (WindowState) inputWindowHandle.windowState;
		if (windowState != null) {
		Slog.i(WindowManagerService.TAG, "Input event dispatching timed out sending to "
		+ windowState.mAttrs.getTitle());
		appWindowToken = windowState.mAppToken;
		mService.saveANRStateLocked(appWindowToken, windowState);
		}
		}
		}

		if (appWindowToken == null && inputApplicationHandle != null) {
		appWindowToken = (AppWindowToken)inputApplicationHandle.appWindowToken;
		if (appWindowToken != null) {
		Slog.i(WindowManagerService.TAG,
		"Input event dispatching timed out sending to application "
		+ appWindowToken.stringName);
		mService.saveANRStateLocked(appWindowToken, null);
		}

		if (windowState != null) {
		Slog.i(WindowManagerService.TAG, "Input event dispatching timed out "
		+ "sending to " + windowState.mAttrs.getTitle());
		} else if (appWindowToken != null) {
		Slog.i(WindowManagerService.TAG, "Input event dispatching timed out "
		+ "sending to application " + appWindowToken.stringName);
		} else {
		Slog.i(WindowManagerService.TAG, "Input event dispatching timed out.");
		}

		mService.saveANRStateLocked(appWindowToken, windowState);
		}

		if (appWindowToken != null && appWindowToken.appToken != null) {

services/java/com/android/server/wm/WindowManagerService.java

+4 −2

Original line number	Diff line number	Diff line
		@@ -9860,14 +9860,16 @@ public class WindowManagerService extends IWindowManager.Stub
		* the time an ANR occurred before anything else in the system changes
		* in response.
		*
		* @param appWindowToken The application that ANR'd, never null.
		* @param appWindowToken The application that ANR'd, may be null.
		* @param windowState The window that ANR'd, may be null.
		*/
		public void saveANRStateLocked(AppWindowToken appWindowToken, WindowState windowState) {
		StringWriter sw = new StringWriter();
		PrintWriter pw = new PrintWriter(sw);
		pw.println(" ANR time: " + DateFormat.getInstance().format(new Date()));
		if (appWindowToken != null) {
		pw.println(" Application at fault: " + appWindowToken.stringName);
		}
		if (windowState != null) {
		pw.println(" Window at fault: " + windowState.mAttrs.getTitle());
		}