lnStopWatch.cpp

/*
 *  (C) 2021 MEAN00 fixounet@free.fr
 *  See license file
 */
#include "lnStopWatch.h"
/**
 *
 * @param startAt
 * @return
 */
uint32_t now(uint32_t startAt)
{
    uint32_t tick = lnGetMs();
    if (tick >= startAt)
        return tick - startAt;
    uint32_t wrap = 0xFFFFFFFFUL;
    uint32_t val = wrap - startAt;
    val += tick;
    return val;
}

/**
 *
 * @param ms
 */
lnStopWatch::lnStopWatch(int ms)
{
    _start = now(0);
    _end = ms;
}
/**
 *
 * @param durationMs
 * @return
 */
bool lnStopWatch::restart(int durationMs)
{
    _start = now(0);
    _end = durationMs;
    return true;
}
/**
 *
 * @return
 */
bool lnStopWatch::elapsed()
{
    uint32_t xnow = now(_start);
    if (xnow > _end)
        return true;
    return false;
}

//---------------------------------

extern uint32_t lnGetCycle32();

lnCycleClock::lnCycleClock()
{
}

void lnCycleClock::restart()
{
    _start = lnGetCycle32();
}
/**
 *
 * @return
 */
uint32_t lnCycleClock::elapsed()
{
    uint32_t after = lnGetCycle32();
    return after - _start; // to do : handle wrap
}

//