Function rte_ring_count

dpdk/lib/ring/rte_ring.h:501–508

* Return the number of entries in a ring. * * @param r * A pointer to the ring structure. * @return * The number of entries in the ring. */

 *   The number of entries in the ring.
 */
static inline unsigned int
rte_ring_count(const struct rte_ring *r)
{
	uint32_t prod_tail = r->prod.tail;
	uint32_t cons_tail = r->cons.tail;
	uint32_t count = (prod_tail - cons_tail) & r->mask;
	return (count > r->capacity) ? r->capacity : count;
}

/**
 * Return the number of free entries in a ring.