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bcd5b4bcbe
Commit abb0b4fc03 moved the shared state for autoprewarm to a dynamic shared memory (DSM) segment, but it left apw_detach_shmem() in the on_shmem_exit callback list for the autoprewarm leader process. This is a problem because shmem_exit() detaches all the DSM segments prior to calling the on_shmem_exit callbacks, thus producing segfaults in the exit path for the autoprewarm leader process. To fix, move apw_detach_shmem() to the before_shmem_exit callback list. This commit also adds a check to pg_prewarm's test that the server shut down normally. It might be worth making this a common check for all shutdowns in TAP tests, but that is left as a future exercise. Reported-by: Andres Freund Reviewed-by: Andres Freund, Álvaro Herrera Discussion: https://postgr.es/m/20240122204117.swton324xcoodnyi%40awork3.anarazel.de
The PostgreSQL contrib tree
---------------------------
This subtree contains porting tools, analysis utilities, and plug-in
features that are not part of the core PostgreSQL system, mainly
because they address a limited audience or are too experimental to be
part of the main source tree. This does not preclude their
usefulness.
User documentation for each module appears in the main SGML
documentation.
When building from the source distribution, these modules are not
built automatically, unless you build the "world" target. You can
also build and install them all by running "make all" and "make
install" in this directory; or to build and install just one selected
module, do the same in that module's subdirectory.
Some directories supply new user-defined functions, operators, or
types. To make use of one of these modules, after you have installed
the code you need to register the new SQL objects in the database
system by executing a CREATE EXTENSION command. In a fresh database,
you can simply do
CREATE EXTENSION module_name;
See the PostgreSQL documentation for more information about this
procedure.