Re: dynamically allocating chunks from shared memory

Markus Wanner <markus@bluegap.ch>

From: Markus Wanner <markus@bluegap.ch>
To: Bruce Momjian <bruce@momjian.us>
Cc: Robert Haas <robertmhaas@gmail.com>, Alvaro Herrera <alvherre@commandprompt.com>, PostgreSQL-development Hackers <pgsql-hackers@postgresql.org>
Date: 2010-08-09T18:39:57Z
Lists: pgsql-hackers
On 08/09/2010 08:33 PM, Bruce Momjian wrote:
> Robert Haas wrote:
>> You probably wouldn't do either of those things.  You'd just allocate
>> small chunks here and there for whatever you need them for.
>
> Well, then we do that with shared memory then --- my point is that it is
> the same problem with threads or processes.

That's what my patch allows you to do, yes. Currently you are bound to 
pre-allocate shared memory at startup. Or how would you allocate small 
chunks from shared memory at the moment?

Regards

Markus