Function func_exec_location

src/backend/utils/cache/lsyscache.c:2512–2529

* func_exec_location * Given procedure id, return the function's proexeclocation field */

 *		Given procedure id, return the function's proexeclocation field
 */
char
func_exec_location(Oid funcid)
{
	HeapTuple	tp;
	char		result;
	bool		isnull;

	tp = SearchSysCache1(PROCOID, ObjectIdGetDatum(funcid));
	if (!HeapTupleIsValid(tp))
		elog(ERROR, "cache lookup failed for function %u", funcid);

	result = DatumGetChar(
		SysCacheGetAttr(PROCOID, tp, Anum_pg_proc_proexeclocation, &isnull));
	ReleaseSysCache(tp);

	Assert(!isnull);
	return result;
}

/*				---------- RELATION CACHE ----------					 */