Re: make MaxBackends available in _PG_init

On 1/7/22, 12:27 PM, "Robert Haas" <robertmhaas@gmail.com> wrote:
> On Fri, Jan 7, 2022 at 1:09 PM Bossart, Nathan <bossartn@amazon.com> wrote:
>> While that approach would provide a way to safely retrieve the value,
>> I think it would do little to prevent the issue in practice.  If the
>> size of the patch is a concern, we could also convert MaxBackends into
>> a macro for calling GetMaxBackends().  This could also be a nice way
>> to avoid breaking extensions that are using it correctly while
>> triggering ERRORs for extensions that are using it incorrectly.  I've
>> attached a new version of the patch that does it this way.
>
> That's too magical for my taste.

Fair point.  v4 [0] is the less magical version.

Nathan

[0] https://postgr.es/m/attachment/125445/v4-0001-Disallow-external-access-to-MaxBackends.patch