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Re: NSArray: Problem allocating memory on stack on windows

From: David Ayers
Subject: Re: NSArray: Problem allocating memory on stack on windows
Date: Thu, 09 Oct 2003 13:31:35 +0200
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.5) Gecko/20030916

Richard Frith-Macdonald wrote:

Unfortunately, having two ways of dealing with the memory means more code, and more chance of bugs ... so generally when adopting this scheme I initially set the changeover point very small, so it's easy to exercise both schemes,
and only increase it when I'm confident both are working well.


I've been usimg the following scheme in GDL2:

     unsigned i;
     id        obj[cnt>GS_MAX_OBJECTS_FROM_STACK?0:cnt];
     id       *objPStart;
     id       *objP;
     id        anObject;
     objPStart = objP = (max > GS_MAX_OBJECTS_FROM_STACK)?

     for(i=0; i < cnt; i++)
         anObject = ...;
     return [NSArray arrayWithObjects: objPStart count: objP - objPStart];

Of course the autoreleasing should be avoided in your case so a second test would be needed to free the memory. But if anyone as any bright ideas :-)


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