/*
 * 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.
 */

#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);
        }

}