32 lines
593 B
C
32 lines
593 B
C
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// SPDX-License-Identifier: MIT
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/**
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Copyright (c) 2015 - 2020 Beckhoff Automation GmbH & Co. KG
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Author: Patrick Bruenn <p.bruenn@beckhoff.com>
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*/
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#pragma once
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#include <condition_variable>
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#include <mutex>
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struct Semaphore {
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void release()
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{
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std::unique_lock<std::mutex> lock(mutex);
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++count;
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cv.notify_one();
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}
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void acquire()
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{
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std::unique_lock<std::mutex> lock(mutex);
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cv.wait(lock, [&](){return count > 0; });
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--count;
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}
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private:
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int count = 0;
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std::mutex mutex;
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std::condition_variable cv;
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};
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