Function plock_lock

dpdk/app/test/test_barrier.c:86–102

* Peterson lock implementation. */

 * Peterson lock implementation.
 */
static void
plock_lock(struct plock *l, uint32_t self)
{
	uint32_t other;

	other = self ^ 1;

	l->flag[self] = 1;
	rte_smp_wmb();
	l->victim = self;

	store_load_barrier(l->utype);

	while (l->flag[other] == 1 && l->victim == self)
		rte_pause();
	rte_smp_rmb();
}

static void
plock_unlock(struct plock *l, uint32_t self)