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From: "Giovanni Spagnuolo" <spanish AT ieee DOT org>
Newsgroups: comp.os.msdos.djgpp
Subject: new[] and delete[]
Date: Mon, 11 Mar 2002 09:06:35 +0000 (UTC)
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Dear friends,
I need your suggestions to solve a problem of heap memory allocation and
disallocation. To the aim of testing the memory disallocation, I've
written the following short program.

#include <conio.h>
#include <iostream.h>
#include <dpmi.h>

int main()
{
        clrscr();

        int N=100000;
        
        cout<<"before allocation"<<endl;
        cout<<_go32_dpmi_remaining_physical_memory()<<endl;
        cout<<_go32_dpmi_remaining_virtual_memory()<<endl<<endl;
        
        int * v = new int[N];
        
        cout<<"after allocation"<<endl;
        cout<<_go32_dpmi_remaining_physical_memory()<<endl;
        cout<<_go32_dpmi_remaining_virtual_memory()<<endl<<endl;
        
        delete [] v;
        
        cout<<"after disallocation"<<endl;
        cout<<_go32_dpmi_remaining_physical_memory()<<endl;
        cout<<_go32_dpmi_remaining_virtual_memory()<<endl<<endl;

        return 0;
}

Nevertheless it seems that the disallocated memory does not become newly
free.
I am making a blunder?
Where I am doing wrong?

Thanks in advance.

Giovanni Spagnuolo
University of Salerno - ITALY
spanish AT ieee DOT org


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