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This can be used to load an injection point and prewarm the backend-level cache before running it, to avoid issues if the point cannot be loaded due to restrictions in the code path where it would be run, like a critical section where no memory allocation can happen (load_external_function() can do allocations when expanding a library name). Tests can use a macro called INJECTION_POINT_LOAD() to load an injection point. The test module injection_points gains some tests, and a SQL function able to load an injection point. Based on a request from Andrey Borodin, who has implemented a test for multixacts requiring this facility. Reviewed-by: Andrey Borodin Discussion: https://postgr.es/m/ZkrBE1e2q2wGvsoN@paquier.xyz
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/.