From:	Robert Hoehne <Robert DOT Hoehne AT Mathematik DOT TU-Chemnitz DOT DE>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: mem alloc taking up power of 2
Date:	Fri, 18 Jul 1997 13:06:52 +0200
Organization:	TU Chemnitz-Zwickau
Lines:	22
Message-ID:	<33CF4E4C.55AC6B25@Mathematik.TU-Chemnitz.DE>
References:	<199707171548 DOT IAA02022 AT adit DOT ap DOT net>
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Nate Eldredge wrote:
> 
> AFAIK, no you don't. malloc uses sbrk to get memory from the DPMI server. It
> gets *that* memory in powers of 2 to reduce overhead, but then parcels it

That's correct.

> out to malloc calls as it's needed. So each structure should just be using a
> 34K block, it's just that malloc grabbed some extra which will be given to
> the next request.

But that's NOT correct. malloc() returns also the power of two aligned
block to the user.

Robert
-- 
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* Robert Hoehne, Fakultaet fuer Mathematik, TU-Chemnitz-Zwickau *
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* e-Mail:  Robert DOT Hoehne AT Mathematik DOT TU-Chemnitz DOT DE              *
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