From: "Rafael García" <rafael AT geninfor DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: negative sbrk(0)
Date: Mon, 25 Sep 2000 17:50:04 +0200
Organization: Telefonica Transmision de Datos
Lines: 29
Message-ID: <8qns3d$6g4$1@diana.bcn.ttd.net>
NNTP-Posting-Host: 193.153.205.157
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 5.00.2014.211
X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2014.211
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Hello all. Today a question about sbrk(). I have this function to know free
memory:

long availmem(void) {
   static long initially=0;
   long limit;
   static long initial_limit;
   long burnt;

   if (!initially) {
      initially=_go32_dpmi_remaining_physical_memory();
      assert(initially>0);
      }
   if (!initial_limit)
      initial_limit=(long)sbrk(0);

   limit=(long)sbrk(0);
   burnt=limit-initial_limit;
   return initially-burnt;
   }


Well, I have got sbrk(0) to return negative values in some cases, so the
function tells I have -1950Kb.
Anybody has a solution?

Thanks