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List:       kde-pim
Subject:    Re: [Kde-pim] out of memory
From:       Ingo =?iso-8859-1?q?Kl=F6cker?= <kloecker () kde ! org>
Date:       2005-05-27 13:44:01
Message-ID: 200505271544.09453 () erwin ! ingo-kloecker ! de
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On Friday 27 May 2005 03:42, Don Sanders wrote:
> On Friday 27 May 2005 02:02, André Wöbbeking wrote:
> > On Thursday 26 May 2005 16:02, David Faure wrote:
> > > On Thursday 26 May 2005 15:32, Mark Bucciarelli wrote:
> > > > In C, I'm used to checking that malloc returns a non-null
> > > > pointer to make sure you app is not out of memory.
> > > >
> > > > How do you do this in C++?
> > >
> > > This was discussed some time ago, and the consenssus was that in
> > > KDE code, we don't check for out of memory, and we don't need to.
> > > The system gets unusable much before the entire swap is used, and
> > > before it gets to that point, the OOM killer will kill processes
> > > as an attempt to recover anyway; and if not, the user will have
> > > rebooted his machine anyway, tired of waiting for the GUI to
> > > respond again. So there isn't much point in bloating up the code
> > > with out-of-memory checks that will never happen, or that won't
> > > make any difference when they happen.
> >
> > so it's better a application or the whole system crashes instead of
> > an error dialog "Sorry, too large document..."?
>
> We had a discussion on the KMail list recently. Where I think we
> didn't disagree that it would be an ok idea to check that there's
> enough memory to complete an action before executing it, e.g. fail
> gracefully and just show a not enough memory dialog if the user tries
> to attach a 1 gig file to a mail.

This discussion was more about running out of hard disk space than 
running out of memory.

Regards,
Ingo

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