| From: | Andrey Borodin <x4mmm(at)yandex-team(dot)ru> |
|---|---|
| To: | Michael Paquier <michael(at)paquier(dot)xyz> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Postgres hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
| Subject: | Re: injection_points: Switch wait/wakeup to use atomics rather than latches |
| Date: | 2026-06-02 18:46:52 |
| Message-ID: | 688F6266-3901-4C84-B27A-AF5904801A3A@yandex-team.ru |
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| Lists: | pgsql-hackers |
> On 2 Jun 2026, at 10:27, Michael Paquier <michael(at)paquier(dot)xyz> wrote:
>
> Rewording my question a bit: did you consider some options regarding
> what an equivalent of a wait event lookup should look like when we
> don't have a PGPROC? My idea of printing a LOG and do a server log
> lookup would work, just asking if others have better ideas than the
> only one I got.
For tests without PGPROC we can mmap() inj_state to a fixed file in
PGDATA/injection_points.shm. TAP can poll name[] to detect that a wait
point was reached and bump wait_counts[] to wake.
Best regards, Andrey Borodin.
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