commit 6191149c9c8d41a08c0167d94d21ac463c144b71
author Wale Ogunwale <ogunwale@google.com> Wed Oct 11 08:50:50 2017 -0700
committer Wale Ogunwale <ogunwale@google.com> Thu Oct 12 18:09:44 2017 -0700
tree 1054af1606df5c8e686240fe9cf5c821b430dd1e
parent 5ff4bcb7eff0d4b81eea60a91d2d551e4f37c1fe

Cache reference to stack objects we use a lot in WM.

This helps with fast access since we are no longer using stack ids
to look-up stack objects.

Test: Existing tests pass.
Test: go/wm-smoke
Change-Id: I98cb6f4eb1e6d6acb81b2077aee03265a075a227

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

diff --git a/services/core/java/com/android/server/wm/StackWindowController.java b/services/core/java/com/android/server/wm/StackWindowController.java
index c0e5fd4..1fda832 100644
--- a/services/core/java/com/android/server/wm/StackWindowController.java
+++ b/services/core/java/com/android/server/wm/StackWindowController.java
@@ -43,7 +43,7 @@
 public class StackWindowController
         extends WindowContainerController<TaskStack, StackWindowListener> {
 
-    final int mStackId;
+    private final int mStackId;
 
     private final H mHandler;
 
@@ -72,7 +72,7 @@
                         + " to unknown displayId=" + displayId);
             }
 
-            dc.addStackToDisplay(stackId, onTop, this);
+            dc.createStack(stackId, onTop, this);
             getRawBounds(outBounds);
         }
     }