Function lwp_user_object_add

components/lwp/lwp_pid.c:456–479

* @brief Add an object to the user object list of a lightweight process * * @param[in,out] lwp The lightweight process structure whose object list needs updating * @param[in] object The object to be added to the LWP's object list * * @return int Returns 0 on success, or -1 on failure */

 * @return int Returns 0 on success, or -1 on failure
 */
int lwp_user_object_add(struct rt_lwp *lwp, rt_object_t object)
{
    int ret = -1;

    if (lwp && object)
    {
        lwp_user_object_lock(lwp);
        if (!lwp_avl_find((avl_key_t)object, lwp->object_root))
        {
            struct lwp_avl_struct *node;

            node = (struct lwp_avl_struct *)rt_malloc(sizeof(struct lwp_avl_struct));
            if (node)
            {
                rt_atomic_add(&object->lwp_ref_count, 1);
                node->avl_key = (avl_key_t)object;
                lwp_avl_insert(node, &lwp->object_root);
                ret = 0;
            }
        }
        lwp_user_object_unlock(lwp);
    }
    return ret;
}

/**
 * @brief Delete a node from the user object list of a lightweight process