/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1998-2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdio.h>
#include "mtmalloc.h"
#include <unistd.h>
#include <thread.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <errno.h>
/*
* This file tests for swap space exhaustion
*
* cc -O -o exhaust exhaust.c -lmtmalloc
*/
void * be_thread(void *);
int iwin = 0;
main(int argc, char ** argv)
{
int ncpus;
thread_t tid[512];
int fd;
caddr_t stacks[512];
srand(getpid());
ncpus = sysconf(_SC_NPROCESSORS_CONF);
fd = open("/dev/zero", O_RDONLY);
if (fd < 0) {
perror("open");
exit(-1);
}
while (ncpus--)
stacks[ncpus] = mmap(0, 1<<23, PROT_READ|PROT_WRITE,
MAP_PRIVATE, fd, 0);
close(fd);
mallocctl(MTCHUNKSIZE, 150);
ncpus = sysconf(_SC_NPROCESSORS_CONF);
while (ncpus--)
thr_create(stacks[ncpus], 1<<23, be_thread, NULL, THR_BOUND,
&tid[ncpus]);
while (thr_join(NULL, NULL, NULL) == 0);
exit(0);
}
/* ARGSUSED */
void *
be_thread(void *foo)
{
char *p;
if (iwin) {
printf("why am I here\n");
return;
}
if ((p = malloc(rand())) == NULL) {
iwin = 1;
fprintf(stderr, "Errno is %d\n", errno);
perror("malloc");
} else {
be_thread(NULL);
printf("free %p\n", p);
free(p);
}
}