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Nathan Bossart 963d3072af Convert unloggedLSN to an atomic variable. 
Currently, this variable is an XLogRecPtr protected by a spinlock.
By converting it to an atomic variable, we can remove the spinlock,
which saves a small amount of shared memory space.  Since this code
is not performance-critical, we use atomic operations with full
barrier semantics to make it easy to reason about correctness.

Author: John Morris
Reviewed-by: Michael Paquier, Robert Haas, Andres Freund, Stephen Frost, Bharath Rupireddy
Discussion: https://postgr.es/m/BYAPR13MB26772534335255E50318C574A0409%40BYAPR13MB2677.namprd13.prod.outlook.com
Discussion: https://postgr.es/m/MN2PR13MB2688FD8B757316CB5C54C8A2A0DDA%40MN2PR13MB2688.namprd13.prod.outlook.com
2024-02-29 14:34:10 -06:00
config Remove AIX support 2024-02-28 15:17:23 +04:00
contrib Introduce a new smgr bulk loading facility. 2024-02-23 16:10:51 +02:00
doc Support MERGE into updatable views. 2024-02-29 15:56:59 +00:00
src Convert unloggedLSN to an atomic variable. 2024-02-29 14:34:10 -06:00
.cirrus.star Remove duplicate words in docs and code comments. 2023-10-09 09:18:47 +05:30
.cirrus.tasks.yml ci: Add test coverage of different pg_upgrade modes 2024-02-19 09:31:23 +01:00
.cirrus.yml ci: Make compute resources for CI configurable 2023-08-23 15:15:28 -07:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Add .editorconfig 2019-12-18 09:13:13 +01:00
.git-blame-ignore-revs Add previous commit to .git-blame-ignore-revs 2024-02-09 11:06:32 +09:00
.gitattributes Remove non-existing file from .gitattributes 2024-02-16 11:39:09 +01:00
.gitignore Update top-level .gitignore. 2022-12-04 15:23:00 -05:00
aclocal.m4 autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
configure Remove configure --with-CC option 2024-02-28 17:05:09 +04:00
configure.ac Remove configure --with-CC option 2024-02-28 17:05:09 +04:00
COPYRIGHT Update copyright for 2024 2024-01-03 20:49:05 -05:00
GNUmakefile.in Stop generating plain-text INSTALL instructions. 2023-12-22 13:32:15 -05:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Remove AIX support 2024-02-28 15:17:23 +04:00
meson.build Remove AIX support 2024-02-28 15:17:23 +04:00
meson_options.txt Add backend support for injection points 2024-01-22 10:15:50 +09:00
README.md Convert README to Markdown. 2024-02-28 14:53:52 -06:00

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/.