Function sys_gettimeofday

components/lwp/lwp_syscall.c:1222–1252

* @brief Retrieves the current time and timezone information. * * This system call retrieves the current time in seconds and microseconds since * the Unix epoch (1970-01-01 00:00:00 UTC) and stores it in the `tp` argument. * It also retrieves the timezone information, if requested, and stores it in the * `tzp` argument. The time returned is the local time of the system unless * UTC is specif

 * @see sys_time(), time(), gettimeofday()
 */
sysret_t sys_gettimeofday(struct timeval *tp, struct timezone *tzp)
{
#ifdef ARCH_MM_MMU
    struct timeval t_k;

    if (tp)
    {
        if (!lwp_user_accessable((void *)tp, sizeof *tp))
        {
            return -EFAULT;
        }

        t_k.tv_sec = rt_tick_get() / RT_TICK_PER_SECOND;
        t_k.tv_usec = (rt_tick_get() % RT_TICK_PER_SECOND) * (1000000 / RT_TICK_PER_SECOND);

        lwp_put_to_user(tp, (void *)&t_k, sizeof t_k);
    }
#else
    if (tp)
    {
        if (!lwp_user_accessable((void *)tp, sizeof *tp))
        {
            return -EFAULT;
        }
        tp->tv_sec = rt_tick_get() / RT_TICK_PER_SECOND;
        tp->tv_usec = (rt_tick_get() % RT_TICK_PER_SECOND) * (1000000 / RT_TICK_PER_SECOND);
    }
#endif

    return 0;
}

/**
 * @brief Sets the system's current time and timezone information.