am 18037f1: Merge "Revert "Revert "DO NOT MERGE Fix race condition between binder deaths""" into klp-modular-dev

* commit '18037f14e8ee8eea7247c03a9cb27e2a8878fd05':
  Revert "Revert "DO NOT MERGE Fix race condition between binder deaths""

Author: Kevin Ma

services/core/java/com/android/server/wm/AppWindowToken.java

@@ -245,6 +245,15 @@ boolean isVisible() {
         return false;
     }
 
+    void removeAllWindows() {
+        for (int winNdx = allAppWindows.size() - 1; winNdx >= 0; --winNdx) {
+            WindowState win = allAppWindows.get(winNdx);
+            if (WindowManagerService.DEBUG_WINDOW_MOVEMENT) Slog.w(WindowManagerService.TAG,
+                    "removeAllWindows: removing win=" + win);
+            win.mService.removeWindowLocked(win.mSession, win);
+        }
+    }
+
     @Override
     void dump(PrintWriter pw, String prefix) {
         super.dump(pw, prefix);

services/core/java/com/android/server/wm/TaskStack.java

@@ -155,7 +155,7 @@ boolean isAnimating() {
                 final ArrayList<WindowState> windows = activities.get(activityNdx).allAppWindows;
                 for (int winNdx = windows.size() - 1; winNdx >= 0; --winNdx) {
                     final WindowStateAnimator winAnimator = windows.get(winNdx).mWinAnimator;
-                    if (winAnimator.isAnimating() && !winAnimator.isDummyAnimation()) {
+                    if (winAnimator.isAnimating() || winAnimator.mWin.mExiting) {
                         return true;
                     }
                 }

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

@@ -3540,7 +3540,7 @@ public void setAppGroupId(IBinder token, int groupId) {
                 return;
             }
             final Task oldTask = mTaskIdToTask.get(atoken.groupId);
-            removeAppFromTaskLocked(atoken);
+            oldTask.removeAppToken(atoken);
 
             atoken.groupId = groupId;
             Task newTask = mTaskIdToTask.get(groupId);
@@ -4563,6 +4563,8 @@ public void stopAppFreezingScreen(IBinder token, boolean force) {
     }
 
     void removeAppFromTaskLocked(AppWindowToken wtoken) {
+        wtoken.removeAllWindows();
+
         final Task task = mTaskIdToTask.get(wtoken.groupId);
         if (task != null) {
             if (!task.removeAppToken(wtoken)) {