1 /*
2  * Copyright 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 #pragma once
18 
19 #include <utils/Mutex.h>
20 
21 namespace android {
22 namespace {
23 
24 // Helps to ensure that some functions runs on SF's main thread by using the
25 // clang thread safety annotations.
26 class CAPABILITY("mutex") MainThreadGuard {
27 } SF_MAIN_THREAD;
28 
29 struct SCOPED_CAPABILITY MainThreadScopedGuard {
30 public:
MainThreadScopedGuardMainThreadScopedGuard31     explicit MainThreadScopedGuard(MainThreadGuard& mutex) ACQUIRE(mutex) {}
RELEASEMainThreadScopedGuard32     ~MainThreadScopedGuard() RELEASE() {}
33 };
34 } // namespace
35 } // namespace android
36