mirror of
https://github.com/openharmony/utils_native.git
synced 2026-08-27 03:32:46 -04:00
zhoushilin
75 lines
1.5 KiB
C++
75 lines
1.5 KiB
C++
/*
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* Copyright (c) 2021 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef SEMAPHORE_EX_H
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#define SEMAPHORE_EX_H
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#include "nocopyable.h"
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#include <iostream>
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#include <thread>
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#include <mutex>
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#include <condition_variable>
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#include <string>
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#include <time.h> // timespec since c11
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namespace OHOS {
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const int INVALID_SEMA_VALUE = -1;
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class NamedSemaphore : public NoCopyable {
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public:
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NamedSemaphore(size_t);
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NamedSemaphore(const std::string&, size_t);
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~NamedSemaphore();
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bool Create();
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bool Unlink();
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bool Open();
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bool Close();
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bool Wait();
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bool TryWait();
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bool TimedWait(const struct timespec& ts);
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bool Post();
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int GetValue() const;
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private:
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std::string name_;
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int maxCount_;
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void* sema_;
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bool named_;
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};
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class Semaphore : public NoCopyable {
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public:
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Semaphore(int value = 1) : count_(value) {}
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~Semaphore() = default;
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void Wait();
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void Post();
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private:
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int count_;
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std::mutex mutex_;
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std::condition_variable cv_;
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};
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} // OHOS
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#endif
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