| From: | Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com> |
|---|---|
| To: | Richard Guo <guofenglinux(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Cc: | David Rowley <dgrowleyml(at)gmail(dot)com>, Ranier Vilela <ranier(dot)vf(at)gmail(dot)com> |
| Subject: | Re: Improve list manipulation in several places |
| Date: | 2023-04-21 16:55:14 |
| Message-ID: | e052f6d1-a388-cc8c-6979-6e3e14d59ec2@enterprisedb.com |
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| Lists: | pgsql-hackers |
On 21.04.23 09:34, Richard Guo wrote:
> There was discussion in [1] about improvements to list manipulation in
> several places. But since the discussion is not related to the topic in
> that thread, fork a new thread here and attach a patch to show my
> thoughts.
>
> Some are just cosmetic changes by using macros. The others should have
> performance gain from the avoidance of moving list entries. But I doubt
> the performance gain can be noticed or measured, as currently there are
> only a few places affected by the change. I still think the changes are
> worthwhile though, because it is very likely that future usage of the
> same scenario can benefit from these changes.
Can you explain the changes?
Maybe this patch should be split up. It seems some of the changes are
trivial simplifications using existing APIs, while others introduce new
functions.
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