From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?UTF-8?Q?Cl=C3=A9ment?= Lassieur <clement@lassieur.org>
Subject: bug#32234: [PATCH 2/2] database: Serialize all database accesses in a
	thread.
Date: Mon, 27 Aug 2018 15:47:27 +0200
Message-ID: <878t4rc45s.fsf@lassieur.org>
References: <20180806192736.1747-1-clement@lassieur.org>
	<20180806192736.1747-2-clement@lassieur.org> <87zhxih2no.fsf@gnu.org>
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To: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Cc: 32234-done@debbugs.gnu.org


Ludovic Court=C3=A8s <ludo@gnu.org> writes:

> Hi Cl=C3=A9ment,
>
> Cl=C3=A9ment Lassieur <clement@lassieur.org> skribis:
>
>> Ludovic Court=C3=A8s <ludo@gnu.org> writes:
>>
>>> Excellent, thanks for working on this!  This looks great to me, and I
>>> think the pros outweigh the cons.  Did you check on a big database how
>>> well it performs?
>>
>> Yes, I didn't see any difference.  When I use Berlin's database, it
>> works well but crashes quickly for another reason (lack of disk space I
>> think, and /tmp being tmpfs).
>
> Sounds good (not that it crashes, but that you didn=E2=80=99t see any
> difference ;-)).
>
>>> I think I find it nicer to keep the =E2=80=98db=E2=80=99 parameter ever=
ywhere (except
>>> that it=E2=80=99s now a channel instead of an actual database) rather t=
han using
>>> this global variable.
>>>
>>> WDYT?
>>
>> That 'db' parameter made sense before, because there were different
>> database connections: one per fiber.  But now that there is only one
>> global channel accessible from everywhere, I can't find any use for a
>> 'db-channel' parameter.
>>
>> Also, using two differents channels for the same database would be a
>> bug, it would break the serialization mechanism.
>>
>> And I don't think using several databases (with one channel per
>> database) would make sense either.
>
> These are all good points, indeed.  I=E2=80=99m mildly reluctant to the g=
lobal
> parameter, but if you prefer it that way, I don=E2=80=99t mind; the end r=
esult
> matters more than this tiny issue anyway!
>
> So: LGTM.
>
> Thank you!
>
> Ludo=E2=80=99.

Ok, pushed!