1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 1998-2003 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#include <stdio.h>
30#include "mtmalloc.h"
31#include <unistd.h>
32#include <thread.h>
33#include <sys/types.h>
34#include <sys/mman.h>
35#include <fcntl.h>
36#include <errno.h>
37
38/*
39 * This file tests for swap space exhaustion
40 *
41 * cc -O -o exhaust exhaust.c -lmtmalloc
42 */
43
44void * be_thread(void *);
45int iwin = 0;
46
47main(int argc, char ** argv)
48{
49	int ncpus;
50	thread_t tid[512];
51	int fd;
52	caddr_t stacks[512];
53
54	srand(getpid());
55	ncpus = sysconf(_SC_NPROCESSORS_CONF);
56
57	fd = open("/dev/zero", O_RDONLY);
58
59	if (fd < 0) {
60		perror("open");
61		exit(-1);
62	}
63
64	while (ncpus--)
65		stacks[ncpus] = mmap(0, 1<<23, PROT_READ|PROT_WRITE,
66			MAP_PRIVATE, fd, 0);
67
68	close(fd);
69
70	mallocctl(MTCHUNKSIZE, 150);
71
72	ncpus = sysconf(_SC_NPROCESSORS_CONF);
73	while (ncpus--)
74		thr_create(stacks[ncpus], 1<<23, be_thread, NULL, THR_BOUND,
75			&tid[ncpus]);
76
77	while (thr_join(NULL, NULL, NULL) == 0);
78
79	exit(0);
80}
81
82/* ARGSUSED */
83void *
84be_thread(void *foo)
85{
86	char *p;
87
88	if (iwin) {
89		printf("why am I here\n");
90		return;
91	}
92
93	if ((p = malloc(rand())) == NULL) {
94		iwin = 1;
95		fprintf(stderr, "Errno is %d\n", errno);
96		perror("malloc");
97	} else {
98		be_thread(NULL);
99		printf("free %p\n", p);
100		free(p);
101	}
102
103}
104