Re: Inlining comparators as a performance optimisation

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Bruce Momjian <bruce(at)momjian(dot)us>, Peter Geoghegan <peter(at)2ndquadrant(dot)com>, PG Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Inlining comparators as a performance optimisation
Date: 2011-12-06 18:08:29
Message-ID: CA+TgmoYZT219+WdaPEM=imop=LfcKUR5-4wmbwR_1QuURw4QwA@mail.gmail.com
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On Tue, Dec 6, 2011 at 1:07 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Robert Haas <robertmhaas(at)gmail(dot)com> writes:
>> OK.  Well, then pushing it out to a separate file probably makes
>> sense.  Do you want to do that or shall I have a crack at it?  If the
>> latter, what do you think about using the name SortKey for everything
>> rather than SortSupport?
>
> I'll take another crack at it.  I'm not entirely sold yet on merging
> the two structs; I think first we'd better look and see what the needs
> are in the other potential callers I mentioned.  If we'd end up
> cluttering the struct with half a dozen weird fields, it'd be better to
> stick to a minimal interface struct with various wrapper structs, IMO.

OK. I'll defer to whatever you come up with after looking at it.

> OTOH it did seem that the names were getting a bit long.  If we do
> keep the two-struct-levels approach, what do you think of
> s/SortSupportInfo/SortSupport/g ?

+1. I had that thought when you originally suggested that name, but
it didn't seem worth arguing about.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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