| From: | Peter Geoghegan <pg(at)bowt(dot)ie> |
|---|---|
| To: | Noah Misch <noah(at)leadboat(dot)com> |
| Cc: | Michael Paquier <michael(at)paquier(dot)xyz>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Can can I make an injection point wait occur no more than once? |
| Date: | 2025-07-07 22:31:33 |
| Message-ID: | CAH2-WzmccKur-zmoPS3X66vCHTFD_knuSZPhpKSgd9=5aRzSqw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Mon, Jul 7, 2025 at 6:02 PM Noah Misch <noah(at)leadboat(dot)com> wrote:
> In your test, just detach the injection point while the backend under test is
> waiting at the injection point. All of
> src/test/modules/injection_points/specs/*.spec use that technique.
That appears to work (without the kludge I added to nbtsearch.c),
though I find that I need to detach the injection point *and* wake up
the waiting backend. In that order. Thanks!
For what it's worth, I found
src/test/modules/injection_points/specs/basic.spec (which is supposed
to serve as a template) hard to follow. The comments don't seem to
explain what the detach and wait functions actually do, and how and
why one might want to call them together.
--
Peter Geoghegan
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