25217d91b1
Currently, the message numbers in sinvaladt.c are ints, but they are never negative, and the code already takes pains to keep them from overflowing. This commit changes them to uint32. The only wrinkle is that SICleanupQueue() computes two thresholds by subtracting from maxMsgNum, and those could previously go negative. They are now clamped at zero, which disables the corresponding checks just as a negative threshold did. This is preparatory work for a follow-up commit that will convert maxMsgNum to an unsigned atomic variable. 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> 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/.