842169b6c1
This moves the responsibility of setting the ProcGlobal->walwriterProc and checkpointerProc fields into InitAuxiliaryProcess. Also switch to the same pattern to advertise the autovacuum launcher's ProcNumber, replacing the ad hoc av_launcherpid field in shared memory. This can easily be extended to other aux processes in the future, if other processes need to find them. Switch to pg_atomic_uint32 for the fields. Seems easier to reason about than volatile pointers. There was some precedence for that, as were already using pg_atomic_uint32 for the procArrayGroupFirst and clogGroupFirst fields, which also store ProcNumbers. Todo: We could also replace WalRecv->procno with this, but that's a little more code churn so I left that for the future. Reviewed-by: Andres Freund <andres@anarazel.de> Discussion: https://www.postgresql.org/message-id/818bafaf-1e77-4c78-8037-d7120878d87c@iki.fi |
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| configure | ||
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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/.