Joe Conway <m...@joeconway.com> writes: > Is it expected that IsUnderPostmaster is true during postmaster startup > in an extension's _PG_init() when preloading under Windows? On Linux it > is false at this point AFAICT.
AFAIK it will be false in the *postmaster's* execution of _PG_init(). But keep in mind that on Windows each exec'd child process will have to load the shared_preload_libraries again for itself, and those executions should see IsUnderPostmaster = true. I think what you are seeing is additional executions in the startup process or other background processes, which don't happen in a forked-children environment. You can probably duplicate this behavior for testing purposes on Unix by compiling with EXEC_BACKEND defined, if that helps. regards, tom lane -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers