Function sys_clock_nanosleep

components/lwp/lwp_syscall.c:8168–8196

* @brief Suspends the execution of the calling thread for the specified time duration. * * This function causes the calling thread to sleep for the specified time duration, which is provided as a * `struct timespec` containing seconds and nanoseconds. The sleep is done based on the specified clock (identified by `clk`). * If the `flags` parameter is set to `TIMER_ABSTIME`, the specified time r

 * @see sys_clock_gettime(), sys_clock_settime(), sys_nanosleep()
 */
sysret_t sys_clock_nanosleep(clockid_t clk, int flags, const struct timespec *rqtp, struct timespec *rmtp)
{
    int ret = 0;
    LOG_D("sys_nanosleep\n");
    if (!lwp_user_accessable((void *)rqtp, sizeof *rqtp))
        return -EFAULT;

#ifdef ARCH_MM_MMU
    struct timespec rqtp_k;
    struct timespec rmtp_k;

    lwp_get_from_user(&rqtp_k, (void *)rqtp, sizeof rqtp_k);
    ret = clock_nanosleep(clk, flags, &rqtp_k, &rmtp_k);
    if ((ret != -1 || rt_get_errno() == EINTR) && rmtp && lwp_user_accessable((void *)rmtp, sizeof *rmtp))
    {
        lwp_put_to_user(rmtp, (void *)&rmtp_k, sizeof rmtp_k);
                if(ret != 0)
            return -EINTR;
    }
#else
    if (rmtp)
    {
        if (!lwp_user_accessable((void *)rmtp, sizeof *rmtp))
            return -EFAULT;
        ret = clock_nanosleep(clk, flags, rqtp, rmtp);
    }
#endif
    return (ret < 0 ? GET_ERRNO() : ret);
}

/**
 * @brief Get the resolution of the specified clock.