f894acb24a
Presently, this view reports NULL for the size of DSAs and dshash tables because 1) the current backend might not be attached to them and 2) the registry doesn't save the pointers to the dsa_area or dshash_table in local memory. Also, the view doesn't show partially-initialized entries to avoid ambiguity, since those entries would report a NULL size as well. This commit introduces a function that looks up the size of a DSA given its handle (transiently attaching to the control segment if needed) and teaches pg_dsm_registry_allocations to use it to show the size of successfully-initialized DSA and dshash entries. Furthermore, the view now reports partially-initialized entries with a NULL size. Reviewed-by: Rahila Syed <rahilasyed90@gmail.com> Reviewed-by: Robert Haas <robertmhaas@gmail.com> Reviewed-by: Chao Li <li.evan.chao@gmail.com> Discussion: https://postgr.es/m/aSeEDeznAsHR1_YF%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/.