From: | Harald Fuchs <use_reply_to(at)protecting(dot)net> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: plperl doesn't release memory |
Date: | 2005-03-31 09:54:08 |
Message-ID: | puhdiscf9b.fsf@srv.protecting.net |
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Lists: | pgsql-general |
In article <20050331082524(dot)GC30965(at)svana(dot)org>,
Martijn van Oosterhout <kleptog(at)svana(dot)org> writes:
> Perl uses reference counting, so as long as a string is visibile
> anywhere (remember closures), it stays around and disappears as soon as
> it's unreferenced.
> If you have large strings or arrays you don't need, maybe you need to
> explicitly undef them. Using shift and pop on arrays doesn't copy the
> element for example. Make sure you're using my on all your variables so
> they are cleared on exiting a function.
> Also, this doesn't work on circular references, so if you build
> structures like that you'll need to explicitly break the chain.
... or use WeakRef.
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