Re: Startup process deadlock: WaitForProcSignalBarriers vs aux process

From: Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>
To: Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>
Cc: Alexander Lakhin <exclusion(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Andrey Borodin <x4mmm(at)yandex-team(dot)ru>
Subject: Re: Startup process deadlock: WaitForProcSignalBarriers vs aux process
Date: 2026-05-27 23:28:13
Message-ID: CAD21AoAE216FOGgz2UmOQ4acTj7Mm=6wMcAM_MNaMVTByHCSFQ@mail.gmail.com
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On Fri, May 22, 2026 at 4:26 PM Matthias van de Meent
<boekewurm+postgres(at)gmail(dot)com> wrote:
>
> On Thu, 14 May 2026 at 14:48, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> wrote:
> >
> > While reviewing the patches, I realized that it would be better to use
> > pg_atomic_write_membarrier_u32() instead of pg_atomic_write_u32() +
> > pg_memory_barrier() where available. I've updated the patch for master
> > and 18, and slightly commit messages.
>
> LGTM, thanks for getting this fixed!
>

Pushed the fix down to v15. Thank you for reviewing the patches!

Regards,

--
Masahiko Sawada
Amazon Web Services: https://aws.amazon.com

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