Function trackDroppedObjectsNeeded

src/backend/commands/event_trigger.c:1168–1178

* Do we need to keep close track of objects being dropped? * * This is useful because there is a cost to running with them enabled. */

 * This is useful because there is a cost to running with them enabled.
 */
bool
trackDroppedObjectsNeeded(void)
{
	/*
	 * true if any sql_drop, table_rewrite, ddl_command_end event trigger
	 * exists
	 */
	return list_length(EventCacheLookup(EVT_SQLDrop)) > 0 ||
		list_length(EventCacheLookup(EVT_TableRewrite)) > 0 ||
		list_length(EventCacheLookup(EVT_DDLCommandEnd)) > 0;
}

/*
 * Support for dropped objects information on event trigger functions.