Timer.hpp

// Copyright 2022 ShenMian
// License(Apache-2.0)
 
#pragma once
 
#include <chrono>
 
class Timer
{
public:
    using clock = std::chrono::high_resolution_clock;
 
    Timer() { restart(); }
 
    void restart() noexcept { start_ = clock::now(); }
 
    auto get_milliseconds() const noexcept
    {
        return std::chrono::duration_cast<std::chrono::milliseconds>(clock::now() - start_).count();
    }
 
    auto get_seconds() const noexcept { return static_cast<double>(get_milliseconds()) / 1000.0; }
 
private:
    std::chrono::time_point<clock> start_;
};