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Nathan Bossart b34fd845e0 Remove unnecessary volatile qualifiers. 
This commit cleans up volatile qualifiers that fit the below
criteria:

* Accesses to shared memory protected by a spinlock or LWLock.
Before commit 0709b7ee72, callers had to use volatile when
accessing spinlock-protected shared memory.  Since spinlock
acquire/release became compiler barriers, and because LWLocks
provide the same guarantee, that is no longer necessary.  These
either predate that change or were cargo-culted from code that did.

* Pointers used only to find the address of a member.  The volatile
qualifier only affects accesses made by dereferencing the pointer,
so it is unnecessary there.

* Accesses to struct members that are marked volatile in the struct
definition.  There's no need to mark these pointers volatile,
either.

* Leftovers from removed PG_TRY blocks.  These were marked volatile
to protect a value that is modified inside a PG_TRY block, but the
PG_TRY has since been removed.

Reviewed-by: Heikki Linnakangas <hlinnaka@iki.fi>
Discussion: https://postgr.es/m/akQ5eJR1tCCXme8e%40nathan
2026-07-07 10:57:48 -05:00
.github ci: Improve ccache handling 2026-06-08 15:26:47 -04:00
config Update config.guess and config.sub 2026-04-09 11:26:14 +02:00
contrib postgres_fdw: Report ANALYZE to pgstats after importing statistics. 2026-07-07 18:40:00 +09:00
doc doc: Add reference to CREATE PROCEDURE on CREATE FUNCTION 2026-07-07 15:55:24 +02:00
src Remove unnecessary volatile qualifiers. 2026-07-07 10:57:48 -05:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Update .editorconfig and .gitattributes for postgresql.conf.sample. 2025-11-18 10:28:36 -06:00
.git-blame-ignore-revs Add commit fdad19e1cf to .git-blame-ignore-revs. 2026-07-03 14:05:21 +05:30
.gitattributes Update .editorconfig and .gitattributes for postgresql.conf.sample. 2025-11-18 10:28:36 -06:00
.gitignore Update top-level .gitignore. 2022-12-04 15:23:00 -05:00
.mailmap Add a Git .mailmap file 2024-11-05 13:56:02 +01:00
aclocal.m4 autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
configure Stamp HEAD as 20devel. 2026-06-29 16:29:11 -04:00
configure.ac Stamp HEAD as 20devel. 2026-06-29 16:29:11 -04:00
COPYRIGHT Update copyright for 2026 2026-01-01 13:24:10 -05:00
GNUmakefile.in Allow selecting the git revision to be packaged by "make dist". 2024-05-03 11:08:50 -04:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Restore AIX support. 2026-02-23 13:34:22 -05:00
meson.build Stamp HEAD as 20devel. 2026-06-29 16:29:11 -04:00
meson_options.txt Revert "Add built-in fuzzing harnesses for security testing." 2026-04-10 09:53:58 -04:00
README.md Revise the style of a paragraph in README.md. 2024-03-21 10:16:41 -05:00

README.md

PostgreSQL Database Management System

This directory contains the source code distribution of the PostgreSQL database management system.

PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.

Copyright and license information can be found in the file COPYRIGHT.

General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.

The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.