Function InitTableAmRoutine

src/backend/utils/cache/relcache.c:1845–1849

* Fill in the TableAmRoutine for a relation * * relation's rd_amhandler must be valid already. */

 * relation's rd_amhandler must be valid already.
 */
static void
InitTableAmRoutine(Relation relation)
{
	relation->rd_tableam = GetTableAmRoutine(relation->rd_amhandler);
}

/*
 * Initialize table access method support for a table like relation