am 521ded6e: am dbf8c0d9: am 991e4936: am cbacd4f0: Merge "Don\'t perform layout while adjusting displays/stacks state." into mnc-dev

* commit '521ded6e9dcb9e97843c89f6d7c87264107d4ef7':
  Don't perform layout while adjusting displays/stacks state.

2 files changed, 20 insertions, 7 deletions

diff --git a/services/core/java/com/android/server/wm/TaskStack.java b/services/core/java/com/android/server/wm/TaskStack.java
index 3da9b4419a7d..ba608bda1e81 100644
--- a/services/core/java/com/android/server/wm/TaskStack.java
+++ b/services/core/java/com/android/server/wm/TaskStack.java
@@ -375,7 +375,10 @@ public class TaskStack {
             for (int appNdx = appWindowTokens.size() - 1; appNdx >= 0; --appNdx) {
                 final WindowList appWindows = appWindowTokens.get(appNdx).allAppWindows;
                 for (int winNdx = appWindows.size() - 1; winNdx >= 0; --winNdx) {
-                    mService.removeWindowInnerLocked(appWindows.get(winNdx));
+                    // We are in the middle of changing the state of displays/stacks/tasks. We need
+                    // to finish that, before we let layout interfere with it.
+                    mService.removeWindowInnerLocked(appWindows.get(winNdx),
+                            false /* performLayout */);
                     doAnotherLayoutPass = true;
                 }
             }
diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java
index f4e2e751a470..d0f79db2be07 100644
--- a/services/core/java/com/android/server/wm/WindowManagerService.java
+++ b/services/core/java/com/android/server/wm/WindowManagerService.java
@@ -2794,6 +2794,10 @@ public class WindowManagerService extends IWindowManager.Stub
     }
 
     void removeWindowInnerLocked(WindowState win) {
+        removeWindowInnerLocked(win, true);
+    }
+
+    void removeWindowInnerLocked(WindowState win, boolean performLayout) {
         if (win.mRemoved) {
             // Nothing to do.
             return;
@@ -2891,7 +2895,9 @@ public class WindowManagerService extends IWindowManager.Stub
                 if (displayContent != null) {
                     displayContent.layoutNeeded = true;
                 }
-                performLayoutAndPlaceSurfacesLocked();
+                if (performLayout) {
+                    performLayoutAndPlaceSurfacesLocked();
+                }
                 if (win.mAppToken != null) {
                     win.mAppToken.updateReportedVisibilityLocked();
                 }
@@ -5194,7 +5200,9 @@ public class WindowManagerService extends IWindowManager.Stub
     }
 
     public void removeStack(int stackId) {
-        mStackIdToStack.remove(stackId);
+        synchronized (mWindowMap) {
+            mStackIdToStack.remove(stackId);
+        }
     }
 
     public void removeTask(int taskId) {
@@ -5268,10 +5276,12 @@ public class WindowManagerService extends IWindowManager.Stub
     }
 
     public void getStackBounds(int stackId, Rect bounds) {
-        final TaskStack stack = mStackIdToStack.get(stackId);
-        if (stack != null) {
-            stack.getBounds(bounds);
-            return;
+        synchronized (mWindowMap) {
+            final TaskStack stack = mStackIdToStack.get(stackId);
+            if (stack != null) {
+                stack.getBounds(bounds);
+                return;
+            }
         }
         bounds.setEmpty();
     }