commit c8cc2292a6e60ec2276ea0d562dfc5711a205b41
author Jorim Jaggi <jjaggi@google.com> Thu Mar 15 20:16:15 2018 +0100
committer Jorim Jaggi <jjaggi@google.com> Thu Mar 15 22:51:55 2018 +0000
tree b5f6c448aa6d6c4e960db189e3551d712c120994
parent a3178fc4404b0119edee2dfab0bf6f5ff0143eb3

Boost thread priorities when running recents anim

To improve scheduling in WM to improve latency.

Bug: 73651529

Test: go/wm-smoke
Test: Trace swiping up, make sure threads have right priority
Change-Id: Ic35c00b70be4877abfe07de4ba1f18648cabd812

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

diff --git a/services/core/java/com/android/server/wm/AppTransition.java b/services/core/java/com/android/server/wm/AppTransition.java
index f0ca2ef..93ca4dc 100644
--- a/services/core/java/com/android/server/wm/AppTransition.java
+++ b/services/core/java/com/android/server/wm/AppTransition.java
@@ -469,10 +469,16 @@
      * boost the priorities to a more important value whenever an app transition is going to happen
      * soon or an app transition is running.
      */
-    private void updateBooster() {
-        WindowManagerService.sThreadPriorityBooster.setAppTransitionRunning(
-                mNextAppTransition != TRANSIT_UNSET || mAppTransitionState == APP_STATE_READY
-                        || mAppTransitionState == APP_STATE_RUNNING);
+    void updateBooster() {
+        WindowManagerService.sThreadPriorityBooster.setAppTransitionRunning(needsBoosting());
+    }
+
+    private boolean needsBoosting() {
+        final boolean recentsAnimRunning = mService.getRecentsAnimationController() != null;
+        return mNextAppTransition != TRANSIT_UNSET
+                || mAppTransitionState == APP_STATE_READY
+                || mAppTransitionState == APP_STATE_RUNNING
+                || recentsAnimRunning;
     }
 
     void registerListenerLocked(AppTransitionListener listener) {