Function rt_sched_lock

src/scheduler_mp.c:565–575

* @brief Lock the system scheduler * * @param plvl Pointer to the object where lock level stores to * * @return rt_err_t * - RT_EOK on success * - -RT_EINVAL if plvl is NULL * * @note This function has both MP version and UP version. */

 * @note This function has both MP version and UP version.
 */
rt_err_t rt_sched_lock(rt_sched_lock_level_t *plvl)
{
    rt_base_t level;
    if (!plvl)
        return -RT_EINVAL;

    SCHEDULER_LOCK(level);
    *plvl = level;

    return RT_EOK;
}

/**
 * @brief Unlock the scheduler and restore the interrupt level