JUCE ElapsedTime

ElapsedTime.h

/**
 Stop watch to measure time intervals

 \code{.cpp}
 ElapsedTime timer;
 // do stuff
 DBG ("Doing stuff took: " << String (timer.elapsed()) << " milliseconds");
 timer.pause();
 // that doesn't count
 timer.resume();
 \endcode
 */

#pragma once

struct ElapsedTime
{
    ElapsedTime() = default;

    void reset()
    {
        startTime = Time::getMillisecondCounter();
        pauseTime = 0;
    }

    uint32 elapsed() const
    {
        if (pauseTime > 0)
            return pauseTime - startTime;

        return Time::getMillisecondCounter() - startTime;
    }

    void pause()
    {
        if (pauseTime == 0)
            pauseTime = Time::getMillisecondCounter();
    }

    void resume()
    {
        if (pauseTime > 0)
        {
            startTime += Time::getMillisecondCounter() - pauseTime;
            pauseTime = 0;
        }
    }

private:
    uint32 startTime { Time::getMillisecondCounter() };
    uint32 pauseTime = 0;
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ElapsedTime)
};