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Melanie Plageman dd78e69cfc Allocate separate DSM chunk for parallel Index[Only]Scan instrumentation 
Previously, parallel index and index-only scans packed the parallel scan
descriptor and shared instrumentation (for EXPLAIN ANALYZE) into a
single DSM allocation. Since scans may be instrumented without being
parallel-aware, and vice versa, using separate DSM chunks -- each with
its own TOC key -- is cleaner. A future commit will extend this pattern
to other scan node types.

Author: Melanie Plageman <melanieplageman@gmail.com>
Reviewed-by: Tomas Vondra <tomas@vondra.me>
Discussion: https://postgr.es/m/flat/a177a6dd-240b-455a-8f25-aca0b1c08c6e%40vondra.me
2026-04-06 19:10:19 -04:00
.github Add CODE_OF_CONDUCT.md, CONTRIBUTING.md, and SECURITY.md. 2024-07-02 13:03:58 -05:00
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contrib auto_explain: Add new GUC, auto_explain.log_extension_options. 2026-04-06 15:19:42 -04:00
doc Add pg_stat_autovacuum_scores system view. 2026-04-06 16:56:33 -05:00
src Allocate separate DSM chunk for parallel Index[Only]Scan instrumentation 2026-04-06 19:10:19 -04:00
.cirrus.star ci: Simplify ci-os-only handling 2025-08-14 12:09:34 -04:00
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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/.