Horton

Re: make MaxBackends available in _PG_init

Alvaro Herrera <alvherre@alvh.no-ip.org>

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From: Alvaro Herrera <alvherre@alvh.no-ip.org>
To: Robert Haas <robertmhaas@gmail.com>
Cc: "Bossart, Nathan" <bossartn@amazon.com>, Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com>, "pgsql-hackers@lists.postgresql.org" <pgsql-hackers@lists.postgresql.org>
Date: 2021-08-02T20:27:12Z
Lists: pgsql-hackers 
On 2021-Aug-02, Robert Haas wrote:

> On Mon, Aug 2, 2021 at 2:18 PM Bossart, Nathan <bossartn@amazon.com> wrote:
> >
> > I think the comments about needing to register background workers
> > before initializing MaxBackends have been incorrect since the addition
> > of max_worker_processes in v9.4 (6bc8ef0b).

> I think this is a good idea. Anyone object?

No objection here.  AFAICS Nathan is correct.

-- 
Álvaro Herrera         PostgreSQL Developer  —  https://www.EnterpriseDB.com/
"Los dioses no protegen a los insensatos.  Éstos reciben protección de
otros insensatos mejor dotados" (Luis Wu, Mundo Anillo)

Commits

  1. Add a new shmem_request_hook hook.

  2. Remove non-functional code for unloading loadable modules.

  3. Fix misleading comments about background worker registration.

  4. Revert the addition of GetMaxBackends() and related stuff.

  5. Fix typo in multixact.c

  6. Reduce more the number of calls to GetMaxBackends()

  7. Remove MaxBackends variable in favor of GetMaxBackends() function.

  8. Fix comments about bgworker registration before MaxBackends initialization

  9. Fix bogus assertion in BootstrapModeMain().

  10. Make sure MaxBackends is always set