Skip writing item during shutdown process if the user is locked.

Otherwise the persist thread would keep trying to write that item,
may causing an infinite loop until timeout.

Flag: com.android.window.flags.record_task_snapshots_before_shutdown
Bug: 389571348
Test: run forrest with multi-user environment.
Change-Id: Ifeefbba2aeff3a13790e8366c5ac34cd62b7fea5

1 files changed, 6 insertions, 1 deletions

diff --git a/services/core/java/com/android/server/wm/SnapshotPersistQueue.java b/services/core/java/com/android/server/wm/SnapshotPersistQueue.java
index a5454546341b..f30231934ca1 100644
--- a/services/core/java/com/android/server/wm/SnapshotPersistQueue.java
+++ b/services/core/java/com/android/server/wm/SnapshotPersistQueue.java
@@ -231,8 +231,13 @@ class SnapshotPersistQueue {
                             if (next.isReady(mUserManagerInternal)) {
                                 isReadyToWrite = true;
                                 next.onDequeuedLocked();
-                            } else {
+                            } else if (!mShutdown) {
                                 mWriteQueue.addLast(next);
+                            } else {
+                                // User manager is locked and device is shutting down, skip writing
+                                // this item.
+                                next.onDequeuedLocked();
+                                next = null;
                             }
                         }
                     }