Profiler/Stopwatch.h at master · cisocrgroup/Profiler · GitHub

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#ifndef CSL_STOPWATCH_H
#define CSL_STOPWATCH_H CSL_STOPWATCH_H

#include <chrono>

namespace csl {
    class Stopwatch {
    public:
	Stopwatch();
	inline void start();
	inline unsigned long long readSeconds() const;
	inline unsigned long long readMilliseconds() const;

    private:
      std::chrono::steady_clock::time_point start_;
    };

    inline Stopwatch::Stopwatch() {
	start();
    }

    inline void Stopwatch::start() {
      start_ = std::chrono::steady_clock::now();
    }

    inline unsigned long long Stopwatch::readSeconds() const {
      std::chrono::steady_clock::time_point now = std::chrono::steady_clock::now();
      return std::chrono::duration_cast<std::chrono::seconds>(now - start_).count();
    }

    inline unsigned long long Stopwatch::readMilliseconds() const {
      std::chrono::steady_clock::time_point now = std::chrono::steady_clock::now();
      return std::chrono::duration_cast<std::chrono::milliseconds>(now - start_).count();
    }
} // ns csl

#endif