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From: kantsel AT mail DOT ru (Anthony)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: How can I monitor the amount of free RAM?
Date: 20 Mar 2004 07:38:50 -0800
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DJ Delorie <dj AT delorie DOT com> wrote in message news:<200403191751 DOT i2JHp99L022683 AT envy DOT delorie DOT com>...
> > 1. What memory should I monitor (DOS (below 1MB), upper,...)
> 
> Virtual.
> 
> > 2. How can do that?
> 
> You don't want to monitor free memory, you want to monitor *used*
> memory (other things on the computer might use memory too).  Most
> programs can use the sbrk(0) call to ask libc where the top of your
> memory is.  If it doesn't change, you're not asking for more memory.
> 
> The exception is if you choose the "non-moving sbrk" option (nearptr,
> DMA, etc need this) in which case your memory range is discontiguous
> and sbrk() moves all over the place during allocation.  But at least
> you can tell if it changes *at all*.

Thanks, I'll use it. But sill, if I want to know how much memory do I
have left, how can I?
Anthony