Re: Proposal: Add a callback data parameter to GetNamedDSMSegment

On Thu, Dec 11, 2025 at 05:17:30PM -0600, Sami Imseih wrote:
>> If the initialization callback function needed the name, it could be
>> provided via the "void *" callback argument, right? I'm not following why
>> we need to provide it separately.
>
> While it's true it can be passed as extra data, it is less error-prone
> as we guarantee the real name of the segment is made available to
> the callback. Also a caller to GetNamedDSMSegment does not need to
> pass the name twice, as the name and as extra data. The most common
> case I would think is using the segment name as the tranche name when
> initializing a lwlock.

But... they can just pass that in the "void *" argument. I'm pretty firmly
-1 for adding more than the one callback argument here.

--
nathan