Optimize TransactionIdIsCurrentTransactionId(). If the passed in xid is the current top transaction, we can do a fast check and exit early. This should work well for the current heap but also works very well for proposed AMs that don't use a separate xid for subtransactions.
Author: Ashwin Agrawal, based on a suggestion from Andres Freund Reviewed-by: Thomas Munro Discussion: https://postgr.es/m/CALfoeiv0k3hkEb3Oqk%3DziWqtyk2Jys1UOK5hwRBNeANT_yX%2Bng%40mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/695c5977c8bc115029a85dcc1821d7b0136b4e4c Modified Files -------------- src/backend/access/transam/xact.c | 3 +++ 1 file changed, 3 insertions(+)
