Function pthread_cond_init

components/libc/posix/pthreads/pthread_cond.c:99–134

* @brief Initializes a condition variable. * * This function initializes the condition variable pointed to by `cond` with the attributes * specified by `attr`. If `attr` is NULL, the condition variable is initialized with the * default attributes. * * @param cond A pointer to the condition variable to be initialized. * Must point to valid memory. * @param attr A pointer to the

 * @see pthread_cond_destroy, pthread_cond_wait, pthread_cond_signal, pthread_cond_broadcast
 */
int pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr)
{
    rt_err_t result;
    char cond_name[RT_NAME_MAX];
    static rt_uint16_t cond_num = 0;

    /* parameter check */
    if (cond == RT_NULL)
        return EINVAL;
    if ((attr != RT_NULL) && (*attr != PTHREAD_PROCESS_PRIVATE))
        return EINVAL;

    rt_snprintf(cond_name, sizeof(cond_name), "cond%02d", cond_num++);

    /* use default value */
    if (attr == RT_NULL)
    {
        cond->attr = PTHREAD_PROCESS_PRIVATE;
    }
    else
    {
        cond->attr = *attr;
    }

    result = rt_sem_init(&cond->sem, cond_name, 0, RT_IPC_FLAG_FIFO);
    if (result != RT_EOK)
    {
        return EINVAL;
    }

    /* detach the object from system object container */
    rt_object_detach(&(cond->sem.parent.parent));
    cond->sem.parent.parent.type = RT_Object_Class_Semaphore;

    return 0;
}
RTM_EXPORT(pthread_cond_init);

/**