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/*
* Copyright (c) 2000 Kungliga Tekniska H�gskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <unistd.h>
#include <roken.h>
#include <err.h>
#ifndef MAP_FAILED
#define MAP_FAILED ((void *)-1)
#endif
RCSID("$KTH: make-page.c,v 1.2.2.1 2001/04/27 23:42:50 mattiasa Exp $");
int
main (int argc, char **argv)
{
int mb = 10;
int ret;
size_t sz;
void *mmap_buf;
srand(getpid() * time(NULL));
sz = mb * 1024 * 1024;
#ifdef MAP_ANON
mmap_buf = mmap (NULL, sz, PROT_READ|PROT_WRITE,
MAP_ANON|MAP_PRIVATE, -1, 0);
#else
{
int fd;
fd = open ("/dev/zero", O_RDWR);
if (fd < 0)
err (1, "open /dev/zero");
mmap_buf = mmap (NULL, sz, PROT_READ | PROT_WRITE,
MAP_PRIVATE, fd, 0);
close (fd);
}
#endif
if (mmap_buf == (void *)MAP_FAILED)
err (1, "mmap");
while (1) {
int *foo = (int *) ((unsigned char *) mmap_buf + (((rand() % (sz - 9)) + 7) & ~7));
struct timeval tv = { 0, 1000} ;
*foo = 10;
select (0, NULL, NULL, NULL, &tv);
}
ret = munmap (mmap_buf, sz);
if (ret)
err (1, "munmap");
}
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