Fixed for Deadlock in IMMS Proxy Service.

Observed deadlock while switching user.

Updating imms service locking scenerio.

Tests: Switch user few times. there is no dead lock issue.

Tracked-On: OAM-122779
Signed-off-by: Ankit Agrawal <[email protected]>

aosp_diff/preliminary/frameworks/opt/car/services/0001-Fixed-for-Deadlock-in-IMMS-Proxy-Service.patch

@@ -0,0 +1,38 @@
+From 4ddc5c17a8d84a1b05fee583574c09a9dd2cfdd4 Mon Sep 17 00:00:00 2001
+From: Ankit Agrawal <[email protected]>
+Date: Fri, 20 Sep 2024 07:06:01 +0530
+Subject: [PATCH] Fixed for Deadlock in IMMS Proxy Service.
+
+Observed deadlock while switching user.
+
+Updating imms service locking scenerio.
+
+Tests: Switch user few times. there is no dead lock issue.
+
+Tracked-On: OAM-122779
+Signed-off-by: Ankit Agrawal <[email protected]>
+---
+ .../server/inputmethod/InputMethodManagerServiceProxy.java | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/builtInServices/src_imms/com/android/server/inputmethod/InputMethodManagerServiceProxy.java b/builtInServices/src_imms/com/android/server/inputmethod/InputMethodManagerServiceProxy.java
+index e7bb329..94a3548 100644
+--- a/builtInServices/src_imms/com/android/server/inputmethod/InputMethodManagerServiceProxy.java
++++ b/builtInServices/src_imms/com/android/server/inputmethod/InputMethodManagerServiceProxy.java
+@@ -126,7 +126,12 @@ public final class InputMethodManagerServiceProxy extends IInputMethodManager.St
+             if ((imms = mServicesForUser.get(userId)) != null) {
+                 return imms;
+             }
+-            imms = new CarInputMethodManagerService(mContext, sExecutor);
++        } finally {
++            mRwLock.writeLock().unlock();
++        }
++        imms = new CarInputMethodManagerService(mContext, sExecutor);
++        try {
++            mRwLock.writeLock().lock();
+             mServicesForUser.set(userId, imms);
+             InputMethodManagerInternal localService = imms.getInputMethodManagerInternal();
+             mLocalServicesForUser.set(userId, localService);
+-- 
+2.34.1
+