timer.hpp

#pragma once
 
#include <chrono>
 
#ifdef __has_include
#if __has_include(<cereal/cereal.hpp>)
#include <cereal/cereal.hpp>
#endif
#endif
 
namespace z {
namespace core {
class timer {
private:
    std::chrono::high_resolution_clock::time_point start;
 
public:
    timer(bool run = true) noexcept;
 
    void reset() noexcept;
 
    void reset(std::chrono::high_resolution_clock::time_point time) noexcept;
 
    unsigned int micros() const noexcept;
 
    unsigned int millis() const noexcept;
 
    unsigned int seconds() const noexcept;
 
    unsigned int minutes() const noexcept;
 
    unsigned int hours() const noexcept;
 
#ifdef __has_include
#if __has_include(<cereal/cereal.hpp>)
    template <class Archive>
    void save(Archive &ar) const {
        time_t elapsed = micros();
        ar(CEREAL_NVP(elapsed));
    }
 
    template <class Archive>
    void load(Archive &ar) {
        time_t elapsed;
        ar(CEREAL_NVP(elapsed));
        reset(std::chrono::high_resolution_clock::now() - std::chrono::microseconds(elapsed));
    }
#endif
#endif
};
} // namespace core
} // namespace z