Re: unnecessary code in_bt_split
| От | Zdenek Kotala |
|---|---|
| Тема | Re: unnecessary code in_bt_split |
| Дата | |
| Msg-id | 489879CD.2000306@sun.com обсуждение исходный текст |
| Ответ на | Re: unnecessary code in_bt_split (Tom Lane <tgl@sss.pgh.pa.us>) |
| Список | pgsql-hackers |
Tom Lane napsal(a):
> Zdenek Kotala <Zdenek.Kotala@Sun.COM> writes:
> I'm thinking we should split PageGetTempPage into two versions:
>
> PageGetTempPage: get a temp page the same size as the given page,
> but don't initialize its contents at all (so, just a thin wrapper
> for palloc). This could be used by _bt_split, as well as
> GinPageGetCopyPage and GistPageGetCopyPage.
>
> PageGetTempPageCopySpecial: get a temp page, PageInit it, and
> copy the special space from the given page. The only customer
> for this is gistplacetopage(), so maybe we don't even want it,
> rather than just doing the work right in gistplacetopage()?
>
> You could also make an argument for PageGetTempPageCopy() which'd just
> copy the source page verbatim, thus replacing GinPageGetCopyPage and
> GistPageGetCopyPage.
Sounds good I will look on it.
Zdenek
--
Zdenek Kotala Sun Microsystems
Prague, Czech Republic http://sun.com/postgresql
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