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Alexander Korotkov 4c1973fcae Avoid recursion in MemoryContext functions 
You might run out of stack space with recursion, which is not nice in
functions that might be used e.g. at cleanup after transaction
abort. MemoryContext contains pointer to parent and siblings, so we
can traverse a tree of contexts iteratively, without using
stack. Refactor the functions to do that.

MemoryContextStats() still recurses, but it now has a limit to how
deep it recurses. Once the limit is reached, it prints just a summary
of the rest of the hierarchy, similar to how it summarizes contexts
with lots of children. That seems good anyway, because a context dump
with hundreds of nested contexts isn't very readable.

Report by Egor Chindyaskin and Alexander Lakhin.

Discussion: https://postgr.es/m/1672760457.940462079%40f306.i.mail.ru
Author: Heikki Linnakangas
Reviewed-by: Robert Haas, Andres Freund, Alexander Korotkov, Tom Lane
 		2024-03-08 13:18:30 +02:00
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contrib Update sepgsql expected output. 2024-03-05 08:45:45 -08:00
doc Introduce a new GUC 'standby_slot_names'. 2024-03-08 08:10:45 +05:30
src Avoid recursion in MemoryContext functions 2024-03-08 13:18:30 +02:00
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.cirrus.tasks.yml ci: Add test coverage of different pg_upgrade modes 2024-02-19 09:31:23 +01:00
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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/.