OS_RESULT rt_free_box_s (void *p_mpool, void *box) {
	P_TCB p_first;
	int i;

	i = _free_box(p_mpool, box);

	if(!rt_is_empty_blk(&os_blk)){
		p_first = rt_get_first_blk(&os_blk);
		p_first->ret_val = (U32)box;
		rt_dispatch(p_first);
	}

	if(i==0) return (OS_R_OK);
	else return (OS_R_NOK);
}