Horton

Merge copies of converting an XID to a FullTransactionId.

Noah Misch <noah@leadboat.com>

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Commit: 1587f7b9fc1a16df8b01b4f5f9e3c949325160b2
Author: Noah Misch <noah@leadboat.com>
Date: 2025-01-25T19:28:18Z
Releases: 17.3 
Merge copies of converting an XID to a FullTransactionId.

Assume twophase.c is the performance-sensitive caller, and preserve its
choice of unlikely() branch hint.  Add some retrospective rationale for
that choice.  Back-patch to v17, for the next commit to use it.

Reviewed (in earlier versions) by Michael Paquier.

Discussion: https://postgr.es/m/17821-dd8c334263399284@postgresql.org
Discussion: https://postgr.es/m/20250116010051.f3.nmisch@google.com

Files

PathChange+/−
contrib/amcheck/verify_heapam.c modified +3 −1
src/backend/access/transam/twophase.c modified +5 −21
src/backend/access/transam/xlogreader.c modified +2 −16
src/backend/utils/adt/xid8funcs.c modified +24 −55
src/include/access/transam.h modified +43 −0

Discussion