1 /*
2  * Copyright (C) 2021 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.server.hdmi;
18 
19 import android.os.Binder;
20 
21 import java.util.Optional;
22 
23 /**
24  * Reads and records Binder's work source UID when executed.
25  */
26 public class WorkSourceUidReadingRunnable implements Runnable {
27     private Optional<Integer> mWorkSourceUid = Optional.empty();
28 
29     @Override
run()30     public void run() {
31         mWorkSourceUid = Optional.of(Binder.getCallingWorkSourceUid());
32     }
33 
34     /**
35      * @return The work source UID read during execution, or Optional.empty() if never executed.
36      */
getWorkSourceUid()37     public Optional<Integer> getWorkSourceUid() {
38         return mWorkSourceUid;
39     }
40 }
41