Function ck_epoch_call

freebsd/contrib/ck/include/ck_epoch.h:195–208

* Defers the execution of the function pointed to by the "cb" * argument until an epoch counter loop. This allows for a * non-blocking deferral. * * We can get away without a fence here due to the monotonic nature * of the epoch counter. Worst case, this will result in some delays * before object destruction. */

 * before object destruction.
 */
CK_CC_FORCE_INLINE static void
ck_epoch_call(ck_epoch_record_t *record,
	      ck_epoch_entry_t *entry,
	      ck_epoch_cb_t *function)
{
	struct ck_epoch *epoch = record->global;
	unsigned int e = ck_pr_load_uint(&epoch->epoch);
	unsigned int offset = e & (CK_EPOCH_LENGTH - 1);

	record->n_pending++;
	entry->function = function;
	ck_stack_push_spnc(&record->pending[offset], &entry->stack_entry);
	return;
}

/*
 * Same as ck_epoch_call, but allows for records to be shared and is reentrant.