Horton

Re: add function for creating/attaching hash table in DSM registry

Nathan Bossart <nathandbossart@gmail.com>

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From: Nathan Bossart <nathandbossart@gmail.com>
To: Sami Imseih <samimseih@gmail.com>
Cc: Florents Tselai <florents.tselai@gmail.com>, Rahila Syed <rahilasyed90@gmail.com>, Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>, pgsql-hackers@postgresql.org
Date: 2025-06-12T15:35:12Z
Lists: pgsql-hackers

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On Wed, Jun 11, 2025 at 05:15:36PM -0500, Sami Imseih wrote:
> I tested v6 and I think GetNamedDSA is a good addition. I did
> not find any issues with the code. However, I am still convinced
> that GetNamedDSMHash  should not append " Hash" to the tranche
> name of the dshash [0]. I am ok  with " DSA" because the DSA tranche
> is created implicitly by the API.

Okay, I've done this in the attached patch.

-- 
nathan

Commits

  1. Fix cross-version upgrade test breakage from commit fe07100e82.

  2. Add GetNamedDSA() and GetNamedDSHash().

  3. Remove dynamic_shared_memory_type=none

  4. Introduce dynamic shared memory areas.

  5. Relax the requirement that all lwlocks be stored in a single array.