Re: Verify predefined LWLocks tranches have entries in wait_event_names.txt
Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
From: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
To: Nathan Bossart <nathandbossart@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2025-07-22T06:20:13Z
Lists: pgsql-hackers
Attachments
- v2-0001-Create-lwlocktranchelist.h.patch (text/x-diff)
Hi, On Mon, Jul 21, 2025 at 03:28:14PM -0500, Nathan Bossart wrote: > On Mon, Jul 21, 2025 at 03:20:55PM -0500, Nathan Bossart wrote: > > On Fri, Jul 18, 2025 at 01:39:15PM +0000, Bertrand Drouvot wrote: > >> +#define PG_BUILTIN_LWTRANCHE(id, name) [id] = name, > >> +#include "storage/lwlocktranchelist.h" > >> +#undef PG_BUILTIN_LWTRANCHE > > > > Why not reuse PG_LWLOCK for this? > > > >> + # Stop recording if we reach another section. > >> + last if /^Section:/; > > > > Can we add a note to wait_event_names.txt about the required > > ordering/matching of the non-predefined LWLocks? Otherwise, these patches > > look pretty good to me. > > Something else I just thought of: could we remove the list of built-in > tranches in lwlock.h with some macro magic that generates it from > lwlocktranchelist.h, too? Thanks for looking at the patch series! Yeah, I also had in mind to auto-generate this enum list (see last sentence in the initial email [1]) but did not think that much on how to do it and was waiting for this patch series to go in before looking at it. But as I like your macro idea and as you mentioned it here too, then let's do it now: it's done in 0003 attached. [1]: https://www.postgresql.org/message-id/aHpOgwuFQfcFMZ/B%40ip-10-97-1-34.eu-west-3.compute.internal Regards, -- Bertrand Drouvot PostgreSQL Contributors Team RDS Open Source Databases Amazon Web Services: https://aws.amazon.com
Commits
-
Cross-check lists of built-in LWLock tranches.
- 2047ad068139 19 (unreleased) landed
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Remove unused variable in generate-lwlocknames.pl.
- 84409ed64056 19 (unreleased) landed
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Rework lwlocknames.txt to become lwlocklist.h
- da952b415f44 17.0 cited