Disable input dispatch until boot finished.

Bug: 6263070
Change-Id: I25e15e3d8af8eb3343c7b684fec345337d9f6aab

Author: Jeff Brown

core/java/android/view/WindowManagerPolicy.java

@@ -1017,7 +1017,7 @@ interface OnKeyguardExitResult {
 
     /**
      * Called when we have finished booting and can now display the home
-     * screen to the user.  This wilWl happen after systemReady(), and at
+     * screen to the user.  This will happen after systemReady(), and at
      * this point the display is active.
      */
     public void enableScreenAfterBoot();

services/input/InputDispatcher.cpp

@@ -185,7 +185,7 @@ InputDispatcher::InputDispatcher(const sp<InputDispatcherPolicyInterface>& polic
     mPolicy(policy),
     mPendingEvent(NULL), mAppSwitchSawKeyDown(false), mAppSwitchDueTime(LONG_LONG_MAX),
     mNextUnblockedEvent(NULL),
-    mDispatchEnabled(true), mDispatchFrozen(false), mInputFilterEnabled(false),
+    mDispatchEnabled(false), mDispatchFrozen(false), mInputFilterEnabled(false),
     mInputTargetWaitCause(INPUT_TARGET_WAIT_CAUSE_NONE) {
     mLooper = new Looper(false);
 

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

@@ -4098,6 +4098,10 @@ void enableScreenAfterBoot() {
         EventLog.writeEvent(EventLogTags.BOOT_PROGRESS_ENABLE_SCREEN,
                 SystemClock.uptimeMillis());
         mWindowManager.enableScreenAfterBoot();
+
+        synchronized (this) {
+            updateEventDispatchingLocked();
+        }
     }
 
     public void showBootMessage(final CharSequence msg, final boolean always) {
@@ -6686,7 +6690,7 @@ public void goingToSleep() {
 
         synchronized(this) {
             mWentToSleep = true;
-            mWindowManager.setEventDispatching(false);
+            updateEventDispatchingLocked();
 
             if (!mSleeping) {
                 mSleeping = true;
@@ -6712,7 +6716,7 @@ public boolean shutdown(int timeout) {
 
         synchronized(this) {
             mShuttingDown = true;
-            mWindowManager.setEventDispatching(false);
+            updateEventDispatchingLocked();
 
             if (mMainStack.mResumedActivity != null) {
                 mMainStack.stopIfSleepingLocked();
@@ -6776,11 +6780,15 @@ public void wakingUp() {
 
         synchronized(this) {
             mWentToSleep = false;
-            mWindowManager.setEventDispatching(true);
+            updateEventDispatchingLocked();
             comeOutOfSleepIfNeededLocked();
         }
     }
 
+    private void updateEventDispatchingLocked() {
+        mWindowManager.setEventDispatching(mBooted && !mWentToSleep && !mShuttingDown);
+    }
+
     public void setLockScreenShown(boolean shown) {
         if (checkCallingPermission(android.Manifest.permission.DEVICE_POWER)
                 != PackageManager.PERMISSION_GRANTED) {

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

@@ -41,7 +41,9 @@ final class InputMonitor implements InputManagerService.Callbacks {
     private boolean mInputDispatchFrozen;
 
     // When true, input dispatch proceeds normally.  Otherwise all events are dropped.
-    private boolean mInputDispatchEnabled = true;
+    // Initially false, so that input does not get dispatched until boot is finished at
+    // which point the ActivityManager will enable dispatching.
+    private boolean mInputDispatchEnabled;
 
     // When true, need to call updateInputWindowsLw().
     private boolean mUpdateInputWindowsNeeded = true;

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

@@ -5149,7 +5149,7 @@ public void performEnableScreen() {
                     //Slog.i(TAG, "******* TELLING SURFACE FLINGER WE ARE BOOTED!");
                     Parcel data = Parcel.obtain();
                     data.writeInterfaceToken("android.ui.ISurfaceComposer");
-                    surfaceFlinger.transact(IBinder.FIRST_CALL_TRANSACTION,
+                    surfaceFlinger.transact(IBinder.FIRST_CALL_TRANSACTION, // BOOT_FINISHED
                                             data, null, 0);
                     data.recycle();
                 }