| From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgsql-hackers(at)postgresql(dot)org, "Charles Duffy" <charles(dot)duffy(at)gmail(dot)com>, "Qingqing Zhou" <zhouqq(at)cs(dot)toronto(dot)edu>, pgsql-patches(at)postgresql(dot)org |
| Subject: | Re: [HACKERS] putting CHECK_FOR_INTERRUPTS in qsort_comparetup() |
| Date: | 2006-07-14 19:53:34 |
| Message-ID: | 200607142153.35116.peter_e@gmx.net |
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| Thread: | |
| Lists: | pgsql-hackers pgsql-patches |
Tom Lane wrote:
> > Doesn't look like it's allocating any nonlocal memory:
> >
> > http://sourceware.org/cgi-bin/cvsweb.cgi/libc/stdlib/qsort.c?rev=1.
> >12&content-type=text/x-cvsweb-markup&cvsroot=glibc
>
> But this file defines _quicksort() not qsort(). I was under the
> impression that the latter is actually a mergesort in glibc ...
The merge sort is here:
It uses alloca, so we're good here.
--
Peter Eisentraut
http://developer.postgresql.org/~petere/
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