Function ck_stack_batch_pop_upmc

freebsd/contrib/ck/include/ck_stack.h:150–158

* Pop all items off the stack. */

 * Pop all items off the stack.
 */
CK_CC_INLINE static struct ck_stack_entry *
ck_stack_batch_pop_upmc(struct ck_stack *target)
{
	struct ck_stack_entry *entry;

	entry = ck_pr_fas_ptr(&target->head, NULL);
	ck_pr_fence_load();
	return entry;
}
#endif /* CK_F_STACK_BATCH_POP_UPMC */

#ifndef CK_F_STACK_PUSH_MPMC