#ifndef CPP_START_STOP_WATCH_H
#define CPP_START_STOP_WATCH_H

#include <chrono>


class StopWatch {

private:

    std::chrono::time_point<std::chrono::high_resolution_clock> mBegin;

public:
    StopWatch() : mBegin(std::chrono::high_resolution_clock::now()) {

    }

    void reset() {
        mBegin = std::chrono::high_resolution_clock::now();
    }

    template<typename Duration=std::chrono::milliseconds>
    int64_t elapsed() const {
        return std::chrono::duration_cast<Duration>(std::chrono::high_resolution_clock::now() - mBegin)
                .count();
    }

};


#endif //CPP_START_STOP_WATCH_H