Add TareHandlerThread.
Create a separate thread for TARE so it doesn't get blocked by or block
other system components.
Bug: 158300259
Test: Android builds
Change-Id: Ib0989fb4c7332287ab2e6776d651298c50999e18
diff --git a/apex/jobscheduler/service/java/com/android/server/tare/TareHandlerThread.java b/apex/jobscheduler/service/java/com/android/server/tare/TareHandlerThread.java
new file mode 100644
index 0000000..afd7dc6
--- /dev/null
+++ b/apex/jobscheduler/service/java/com/android/server/tare/TareHandlerThread.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.tare;
+
+import android.os.HandlerThread;
+import android.os.Looper;
+import android.os.Trace;
+
+/**
+ * Singleton thread for all of TARE.
+ *
+ * @see com.android.internal.os.BackgroundThread
+ */
+final class TareHandlerThread extends HandlerThread {
+
+ private static TareHandlerThread sInstance;
+
+ private TareHandlerThread() {
+ super("tare");
+ }
+
+ private static void ensureThreadLocked() {
+ if (sInstance == null) {
+ sInstance = new TareHandlerThread();
+ sInstance.start();
+ final Looper looper = sInstance.getLooper();
+ looper.setTraceTag(Trace.TRACE_TAG_SYSTEM_SERVER);
+ }
+ }
+
+ static TareHandlerThread get() {
+ synchronized (TareHandlerThread.class) {
+ ensureThreadLocked();
+ }
+ return sInstance;
+ }
+}
