I've tried without "stdlib.h". The same result for both cases (malloc()/free() and New()/Safefree())

I aslo created a new MSVC6 project with the same code (perl paths included):

#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

struct s {
    int field1;
    int field2;
    int field3;
};

void do_simulation() {
    int i;
    struct s * m = (struct s*)malloc(10000000 * sizeof(struct s));

    for (i=0; i<10000000; i++) {
        m[i].field1 = 0;
        m[i].field2 = 1;
        m[i].field3 = 2;
    }    
    
    /* sleep for 5 seconds to be able to analyze memory usage
    sleep(5);
    
    free(m);

    /* sleep for 5 seconds to be able to see if memory is freed 
    sleep(5);
}


int main(void) {

    do_simulation();

    return 1;
}

[download]

... and everithing works as it should: first 5 seconds the process uses 200+ MB (VM included), the last 5 seconds memory usage drops down to ~600 KB

In reply to Re^3: Calling a C function using malloc() in a XS by Anonymous Monk
in thread Calling a C function using malloc() in a XS by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.