Function elapsed_ms

src/misc.c:1939–1990

@cond Doxygen_Suppress

//! @cond Doxygen_Suppress
double HAMLIB_API elapsed_ms(struct timespec *start, int option)
{
    // If option then we are starting the timing, else we get elapsed
    struct timespec stop;
    double elapsed_msec;

    if (option == HAMLIB_ELAPSED_SET)
    {
        start->tv_sec = start->tv_nsec = 0;
    }

    stop = *start; // just to suppress some compiler warnings

    //rig_debug(RIG_DEBUG_TRACE, "%s: start = %ld,%ld\n", __func__,
    //          (long)start->tv_sec, (long)start->tv_nsec);


    switch (option)
    {
    case HAMLIB_ELAPSED_GET:
        if (start->tv_nsec == 0)   // if we haven't done SET yet
        {
            clock_gettime(CLOCK_REALTIME, start);
            return 1000 * 1000;
        }

        clock_gettime(CLOCK_REALTIME, &stop);
        break;

    case HAMLIB_ELAPSED_SET:
        clock_gettime(CLOCK_REALTIME, start);
        //rig_debug(RIG_DEBUG_TRACE, "%s: after gettime, start = %ld,%ld\n", __func__,
        //          (long)start->tv_sec, (long)start->tv_nsec);
        return 999 * 1000; // so we can tell the difference in debug where we came from

    case HAMLIB_ELAPSED_INVALIDATE:
        clock_gettime(CLOCK_REALTIME, start);
        stop = *start;
        start->tv_sec -= 10; // ten seconds should be more than enough
        break;
    }

    // Casts used to make sure the add is done as double
    elapsed_msec = (double)((stop.tv_sec - start->tv_sec) * 1000) + // sec -> ms
                   (double)(stop.tv_nsec - start->tv_nsec) / 1e6;   // ns  -> ms

    //rig_debug(RIG_DEBUG_TRACE, "%s: elapsed_msecs=%.0f\n", __func__, elapsed_msec);

    if (elapsed_msec < 0 || option == HAMLIB_ELAPSED_INVALIDATE) { return 1000000; }

    return elapsed_msec;
}
//! @endcond

static char *funcname = "Unknown";