Function rte_ring_empty

dpdk/lib/ring/rte_ring.h:548–554

* Test if a ring is empty. * * @param r * A pointer to the ring structure. * @return * - 1: The ring is empty. * - 0: The ring is not empty. */

 *   - 0: The ring is not empty.
 */
static inline int
rte_ring_empty(const struct rte_ring *r)
{
	uint32_t prod_tail = r->prod.tail;
	uint32_t cons_tail = r->cons.tail;
	return cons_tail == prod_tail;
}

/**
 * Return the size of the ring.