Re: Memory leaks on SRF rescan - Mailing list pgsql-hackers

From Tom Lane
Subject Re: Memory leaks on SRF rescan
Date
Msg-id 21135.1203649649@sss.pgh.pa.us
Whole thread Raw
In response to Re: Memory leaks on SRF rescan  (Neil Conway <neilc@samurai.com>)
List pgsql-hackers
Neil Conway <neilc@samurai.com> writes:
> On Thu, 2008-02-21 at 21:42 -0500, Tom Lane wrote:
>> Yeah.  I think it's hopeless to expect these functions to all hew to
>> the straight and narrow path.  It seems to me that the right way is for
>> the sub-select to somehow run in its own "per-query" context.

> Hmm, I was thinking of just fixing this by arranging for the
> FuncCallContext's multi-call context to be a special context created by
> the function scan, and that is reset/deleted at the appropriate time.
> Would this not fix the issue as well?

That might work, particularly if we could arrange for all the functions
invoked in a particular subquery to share the same "per query" context.
Want to take a whack at it?
        regards, tom lane


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