28de66cee5
The two callbacks have_fixed_pending_cb and flush_fixed_cb have been introduced in fc415edf8ca8 to provide a way for fixed-numbered statistics to control the flush of their data. These are renamed to respectively have_static_pending_cb and flush_static_cb. The restriction that these only apply to fixed-numbered stats is removed. A follow-up patch will make use of them for backend statistics. This stats kind is variable-numbered, and patches are under discussion to track WAL data for IO and backend stats which cannot use PgStat_EntryRef->pending as pending data would be touched in critical sections, where no memory allocation can happen. Per discussion with Andres Freund. Author: Bertrand Drouvot Reviewed-by: Michael Paquier Discussion: https://postgr.es/m/66efowskppsns35v5u2m7k4sdnl7yoz5bo64tdjwq7r5lhplrz@y7dme5xwh2r5
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/.