df3978c234
Currently, this variable is a uint32 protected by a spinlock. The spinlock exists only to provide memory barriers, so by converting the variable to an atomic and using the barrier-providing accessors in the spinlock's place, we can remove the spinlock. Author: Yura Sokolov <y.sokolov@postgrespro.ru> Reviewed-by: Heikki Linnakangas <hlinnaka@iki.fi> Reviewed-by: Peter Eisentraut <peter@eisentraut.org> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Zsolt Parragi <zsolt.parragi@percona.com> Tested-by: solai v <solai.cdac@gmail.com> Discussion: https://postgr.es/m/30aa0030-f694-44ef-a19d-6ef7ddb69374%40postgrespro.ru Discussion: https://postgr.es/m/alAJeRRzehDjLaF1%40nathan
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/.