Re: proposal: tsearch dictionary initialization hook

Pavel Stehule <pavel.stehule@gmail.com>

From: Pavel Stehule <pavel.stehule@gmail.com>
To: Teodor Sigaev <teodor@sigaev.ru>
Cc: PostgreSQL Hackers <pgsql-hackers@postgresql.org>, Oleg Bartunov <oleg@sai.msu.su>, Tom Lane <tgl@sss.pgh.pa.us>
Date: 2010-09-07T16:55:35Z
Lists: pgsql-hackers
Hello

2010/9/7 Teodor Sigaev <teodor@sigaev.ru>:
> Hm, what is aim of this hook? It looks like a wrapper of dictionary init
> method.

If I use a mmap for shared dictionary, then I have to prealloc and
maybe preread dictionary - it can be done in external module. But I
have to join preloaded dictionary to requested dictionary. This hook
allows this relation - and it's general - I don't need any special
support in ispell dictionary.

Regards

Pavel


>
>> I propose a new hook type - that helps with controlling a life cycle
>> of some tsearch dictionaries. This hook has minimal impact on
>> performance - it's called once per session for one tsearch
>> configuration.
>
> --
> Teodor Sigaev                                   E-mail: teodor@sigaev.ru
>                                                   WWW: http://www.sigaev.ru/
>