| From: | Nathan Bossart <nathan(at)postgresql(dot)org> |
|---|---|
| To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
| Subject: | pgsql: Convert some ParallelBlockTableScanDescData fields to atomics. |
| Date: | 2026-09-04 15:56:43 |
| Message-ID: | E1x2WHS-00000003TGk-2cuV@gemulon.postgresql.org |
| Views: | Whole Thread | Raw Message | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-committers |
Convert some ParallelBlockTableScanDescData fields to atomics.
Currently, phs_startblock and phs_numblock are of type BlockNumber
and are protected by a spinlock. By converting them to atomic
variables, we can remove the spinlock and some retry code.
Reviewed-by: Zsolt Parragi <zsolt(dot)parragi(at)percona(dot)com>
Tested-by: solai v <solai(dot)cdac(at)gmail(dot)com>
Discussion: https://postgr.es/m/alAJeRRzehDjLaF1%40nathan
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/7344937cbe640cd8c5304cefe7d6b726187ad4ab
Modified Files
--------------
src/backend/access/heap/heapam_handler.c | 2 +-
src/backend/access/table/tableam.c | 59 +++++++++++++++-----------------
src/include/access/relscan.h | 8 ++---
3 files changed, 31 insertions(+), 38 deletions(-)
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Nathan Bossart | 2026-09-04 18:03:45 | pgsql: Convert FastPathStrongRelationLocks to atomics. |
| Previous Message | Daniel Gustafsson | 2026-09-04 14:51:19 | pgsql: doc: Pluralize MXID when referring to Multixact IDs |