Date: Mon, 1 Dec 2008 17:43:12 -0600 From: Dan Nelson <dnelson@allantgroup.com> To: Yuri <yuri@rawbw.com> 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? Message-ID: <20081201234311.GE53570@dan.emsphone.com> In-Reply-To: <20081201233758.GD53570@dan.emsphone.com> References: <49345710.9070403@rawbw.com> <874p1njz3l.fsf@kobe.laptop> <49346BD3.5080506@rawbw.com> <20081201233758.GD53570@dan.emsphone.com>
next in thread | previous in thread | raw e-mail | index | archive | help
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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20081201234311.GE53570>