From:	"John M. Aldrich" <fighteer AT cs DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: how to free memory?
Date:	Sat, 04 Jan 1997 11:52:59 -0800
Organization:	Two pounds of chaos and a pinch of salt
Lines:	20
Message-ID:	<32CEB51B.5C68@cs.com>
References:	<5alsge$fj0$1 AT helios DOT man DOT lublin DOT pl>
Reply-To:	fighteer AT cs DOT com
NNTP-Posting-Host:	ppp102.cs.com
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Grzegorz Ludorowski wrote:
> 
> I've got a problem with "free" (or "xfree") routines - it's silly I know,
> but they seems not to work...
> I tried program listed below, and after freeing that "dummy" pointer,
> free memory doesn't change... If anybody coud test it and help.

This is the correct behavior.  Under DJGPP/DPMI, the use of memory is
highly optimized for speed and efficiency.  When you free a block of
memory, it is added to a pool of free memory blocks so that your program
can reuse them with very little overhead.  See chapter 15.2 of the FAQ
(v2/faq202b.zip from SimTel) for more information.

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