services/surfaceflinger/MainThreadGuard.h

/*
 * Copyright 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.
 */

#pragma once

#include <utils/Mutex.h>

namespace android {
namespace {

// Helps to ensure that some functions runs on SF's main thread by using the
// clang thread safety annotations.
class CAPABILITY("mutex") MainThreadGuard {
} SF_MAIN_THREAD;

struct SCOPED_CAPABILITY MainThreadScopedGuard {
public:
    explicit MainThreadScopedGuard(MainThreadGuard& mutex) ACQUIRE(mutex) {}
    ~MainThreadScopedGuard() RELEASE() {}
};
} // namespace
} // namespace android