Add BinderProxy tracking code to SysUI.

Bug: 71353150
Test: runtest systemui
Change-Id: I48fbee833fb1c9e70c6efa8c0b232abbc340dce3

packages/SystemUI/src/com/android/systemui/SystemUIApplication.java

@@ -61,7 +61,7 @@ import java.util.Map;
  */
 public class SystemUIApplication extends Application implements SysUiServiceProvider {
 
-    private static final String TAG = "SystemUIService";
+    public static final String TAG = "SystemUIService";
     private static final boolean DEBUG = false;
 
     /**

packages/SystemUI/src/com/android/systemui/SystemUIService.java

@@ -20,11 +20,15 @@ import android.app.Service;
 import android.content.Intent;
 import android.os.Build;
 import android.os.IBinder;
+import android.os.Process;
 import android.os.SystemProperties;
+import android.util.Slog;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
 
+import com.android.internal.os.BinderInternal;
+
 public class SystemUIService extends Service {
 
     @Override
@@ -36,6 +40,21 @@ public class SystemUIService extends Service {
         if (Build.IS_DEBUGGABLE && SystemProperties.getBoolean("debug.crash_sysui", false)) {
             throw new RuntimeException();
         }
+
+        if (Build.IS_DEBUGGABLE) {
+            // b/71353150 - looking for leaked binder proxies
+            BinderInternal.nSetBinderProxyCountEnabled(true);
+            BinderInternal.nSetBinderProxyCountWatermarks(1000,900);
+            BinderInternal.setBinderProxyCountCallback(
+                    new BinderInternal.BinderProxyLimitListener() {
+                        @Override
+                        public void onLimitReached(int uid) {
+                            Slog.w(SystemUIApplication.TAG,
+                                    "uid " + uid + " sent too many Binder proxies to uid "
+                                    + Process.myUid());
+                        }
+                    }, Dependency.get(Dependency.MAIN_HANDLER));
+        }
     }
 
     @Override