platform_system_core/init/service_lock.h

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/*
* Copyright (C) 2020 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 <mutex>
#include <android-base/thread_annotations.h>
namespace android {
namespace init {
// This class exists to add thread annotations, since they're absent from std::recursive_mutex.
class CAPABILITY("mutex") RecursiveMutex {
public:
void lock() ACQUIRE() { mutex_.lock(); }
void unlock() RELEASE() { mutex_.unlock(); }
private:
std::recursive_mutex mutex_;
};
extern RecursiveMutex service_lock;
} // namespace init
} // namespace android