From:	"Edmund Horner" <ejrh AT paradise DOT net DOT nz>
Newsgroups:	comp.os.msdos.djgpp
References:	<384411007 DOT 969036196326 DOT JavaMail DOT root AT web305-mc DOT mail DOT com>
Subject:	Re: free() DOESN'T return memory to system
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Date:	Sat, 16 Sep 2000 16:29:17 +1200
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

Who's actually asking the question here?  :)

I don't think you can explicitly return memory to the system, but then, I am
not sure it would be very useful to anyway.  If you're running under DOS,
you'll only have one task happening anyway, and if you're under Win9x, the
OS will give each task as much as it needs, anyway.

But if you're really serious on this, you may be able to extend the DPMI
server and the memory functions to allow this...  but I don't think it'll be
easy!

Edmund.

"J Almeida" <almeidaj AT mail DOT com> wrote in message
news:384411007 DOT 969036196326 DOT JavaMail DOT root AT web305-mc DOT mail DOT com...
> Hi,
>
> Faq15_2.html clearly states that: "When you call free, DJGPP library
doesn't
> return memory to the system, it just adds it to its internal pool of free
> pages. So, from the point of view of the DPMI server, these pages are not
> "free"."
> My question is:
> Isn't there a way to ensure that DJGPP _does_ return memory to the system?
> Like _heapmin() in MS Visual C.
> Can someone help?
> Thanks.
>
>
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