Function pthread_cond_destroy

components/libc/posix/pthreads/pthread_cond.c:161–191

* @brief Destroys a condition variable. * * This function destroys the condition variable pointed to by `cond`. After a condition * variable is destroyed, it must not be used until it is reinitialized with * `pthread_cond_init`. * * @param cond A pointer to the condition variable to be destroyed. * Must point to a valid, previously initialized condition variable. * * @return

 * @see pthread_cond_init, pthread_cond_wait, pthread_cond_signal, pthread_cond_broadcast
 */
int pthread_cond_destroy(pthread_cond_t *cond)
{
    rt_err_t result;
    if (cond == RT_NULL)
    {
        return EINVAL;
    }
    /* which is not initialized */
    if (cond->attr == -1)
    {
        return 0;
    }

    if (!rt_list_isempty(&cond->sem.parent.suspend_thread))
    {
        return EBUSY;
    }
__retry:
    result = rt_sem_trytake(&(cond->sem));
    if (result == EBUSY)
    {
        pthread_cond_broadcast(cond);
        goto __retry;
    }

    /* clean condition */
    rt_memset(cond, 0, sizeof(pthread_cond_t));
    cond->attr = -1;

    return 0;
}
RTM_EXPORT(pthread_cond_destroy);

/**