1/*
2 * Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15#ifndef OHOS_PROFILER_STD_SEMAPHORE_H
16#define OHOS_PROFILER_STD_SEMAPHORE_H
17
18#include <condition_variable>
19#include <mutex>
20#include "i_semaphore.h"
21#include "nocopyable.h"
22
23class StdSemaphore : public ISemaphore {
24public:
25    explicit StdSemaphore(unsigned int value);
26    ~StdSemaphore();
27    bool Wait() override;
28    bool TryWait() override;
29    bool TimedWait(int seconds, int nanoSeconds) override;
30    bool Post() override;
31    unsigned int Value() const override;
32
33private:
34    bool TryWaitLocked();
35
36    mutable std::mutex mutex_;
37    std::condition_variable condVar_;
38    volatile unsigned int value_;
39
40    DISALLOW_COPY_AND_MOVE(StdSemaphore);
41};
42
43class StdSemaphoreFactory : public ISemaphoreFactory {
44public:
45    SemaphorePtr Create(unsigned int value) override;
46};
47
48#endif // OHOS_PROFILER_STD_SEMAPHORE_H