RE: [AD] crash 16bit fullscreen mode

["Robert Ohannessian" <ROhannessian@xxxxxxxxxx>]

Someone should search the [AD] archives. I pointed this problem out
several years ago. Don't remember where it ended though.


> -----Original Message-----
> From: alleg-developers-admin@xxxxxxxxxx [mailto:alleg-
> developers-admin@xxxxxxxxxx] On Behalf Of aj
> Sent: Saturday, November 13, 2004 12:50 AM
> To: alleg-developers@xxxxxxxxxx
> Subject: Re: [AD] crash 16bit fullscreen mode
> 
> At 06:11 AM 13/11/2004, you wrote:
> >On Sat, 2004-11-13 at 05:38 +1100, aj wrote:
> > > i have a theory...
> > >
> > > i think i have found a race condition where the graphics driver
may be
> > > drawing to a surface it no longer has locked, due to alt-tabing
away
> from
> > > the app.   is that possible ?
> > > could it be that during the alt-tab away, the screen bitmap is
lost
> and
> > > attempting to draw on it causes a crash ?
> > > this problem has only been reported to me by some users that claim
its
> a
> > > recent bug, so maybe its a change that occured between 4.1.15 and
> 4.1.16 ?
> > >
> >
> >Hm, so it isn't always reproducible? Sounds like a race condition
> >indeed.
> 
> 
> it is re-producible.
> it doesn't crash in debug builds, just release build :(
> so tracking it down is really hard.
> i've started a thread on a.cc about it also, that i will continually
> update
> in the hope that others have some evidence too, that might lead to a
fix.
> 
> please read the a.cc thread for additional info..
> http://www.allegro.cc/forums/view_thread.php?_id=429489
> 
> 
> 
> 
> 
> 
> 
> >The changes are here:
> >http://alleg.sourceforge.net/onlinedocs/en/changes.html
> >
> >No idea what could cause it.
> >
> >--
> >Elias Pschernig
> >
> >
> >
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> 
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