Function RegisterRelcacheInvalidation

src/backend/utils/cache/inval.c:544–566

* RegisterRelcacheInvalidation * * As above, but register a relcache invalidation event. */

 * As above, but register a relcache invalidation event.
 */
static void
RegisterRelcacheInvalidation(Oid dbId, Oid relId)
{
	AddRelcacheInvalidationMessage(&transInvalInfo->CurrentCmdInvalidMsgs,
								   dbId, relId);

	/*
	 * Most of the time, relcache invalidation is associated with system
	 * catalog updates, but there are a few cases where it isn't.  Quick hack
	 * to ensure that the next CommandCounterIncrement() will think that we
	 * need to do CommandEndInvalidationMessages().
	 */
	(void) GetCurrentCommandId(true);

	/*
	 * If the relation being invalidated is one of those cached in a relcache
	 * init file, mark that we need to zap that file at commit. For simplicity
	 * invalidations for a specific database always invalidate the shared file
	 * as well.  Also zap when we are invalidating whole relcache.
	 */
	if (relId == InvalidOid || RelationIdIsInInitFile(relId))
		transInvalInfo->RelcacheInitFileInval = true;
}

#ifdef USE_ASSERT_CHECKING
static char *