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Date: Mon, 1 Dec 2008 17:43:12 -0600
From: Dan Nelson <dnelson@allantgroup.com>
To: Yuri <yuri@rawbw.com>
Message-ID: <20081201234311.GE53570@dan.emsphone.com>
References: <49345710.9070403@rawbw.com> <874p1njz3l.fsf@kobe.laptop>
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	<20081201233758.GD53570@dan.emsphone.com>
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X-OS: FreeBSD 7.1-PRERELEASE
User-Agent: Mutt/1.5.18 (2008-05-17)
Cc: Giorgos Keramidas <keramida@ceid.upatras.gr>, freebsd-questions@freebsd.org
Subject: Re: Why process memory starts so high up in virtual space with
	FreeBSD malloc?
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In the last episode (Dec 01), Dan Nelson said: 
> Here's what I get with a simple test program on a month-old 7.1-PRE

Gah. silly mailing-list attachment stripper.

#include <stdlib.h>
#include <stdio.h>

int main(void)
{
  size_t malloced = 0;
  size_t chunksize = 1024*1024;
  void *first = NULL;
  void *last = NULL;
  void *ptr;
  
  while ((ptr = malloc(chunksize)) != NULL) {
    if (first == NULL)
      first = ptr;
    last = ptr;
    malloced += chunksize;
  }
  printf("Malloced %zu bytes. First: %p, Last: %p\n", malloced, first, last);
  exit(0);
}

-- 
	Dan Nelson
	dnelson@allantgroup.com