countdown_latch.h

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#pragma once
#include <chrono>
#include <condition_variable>
#include <mutex>
 
class CountDownLatch {
public:
    explicit CountDownLatch(const unsigned int count): m_count(count) { }
    virtual ~CountDownLatch() = default;
 
    void await();
 
    void countDown();
 
    unsigned int getCount();
 
protected:
    std::mutex m_mutex;
    std::condition_variable m_cv;
    unsigned int m_count = 0;
};