Function sys_mq_timedsend

components/lwp/lwp_syscall.c:9176–9202

* @brief Send a message to a message queue with a timeout. * * This function sends a message to the specified message queue, but it allows the sender * to specify a timeout. If the message queue is full, the function will block until either * space becomes available or the specified timeout expires. If the timeout expires without * space being available, the function returns an error. * * @

 * @see sys_mq_send
 */
sysret_t sys_mq_timedsend(mqd_t mqd, const char *msg, size_t len, unsigned prio, const struct timespec *at)
{
    int ret = 0;
#ifdef ARCH_MM_MMU
    char *kmsg = RT_NULL;
    struct timespec at_k;

    kmsg = (char *)kmem_get(len + 1);
    if (!kmsg)
        return -ENOMEM;

    lwp_get_from_user(&at_k, (void *)at, sizeof(struct timespec));
    lwp_get_from_user(kmsg, (void *)msg, len + 1);
    ret = mq_timedsend(mqd, kmsg, len, prio, &at_k);
    if (ret < 0)
    {
        ret = GET_ERRNO();
    }

    kmem_put(kmsg);

    return ret;
#else
    ret = mq_timedsend(mqd, msg, len, prio, at);
    return (ret < 0 ? GET_ERRNO() : ret);
#endif
}

/**
 * @brief Receive a message from a message queue with a timeout.