exhaust.c revision 2
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * CDDL HEADER START
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
3e14f97f673e8a630f076077de35afdd43dc1587Roger A. Faulkner * The contents of this file are subject to the terms of the
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Common Development and Distribution License, Version 1.0 only
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * (the "License"). You may not use this file except in compliance
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin * with the License.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * or http://www.opensolaris.org/os/licensing.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * See the License for the specific language governing permissions
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * and limitations under the License.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * When distributing Covered Code, include this CDDL HEADER in each
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * If applicable, add the following below this CDDL HEADER, with the
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * fields enclosed by brackets "[]" replaced with your own identifying
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * information: Portions Copyright [yyyy] [name of copyright owner]
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * CDDL HEADER END
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Copyright 1998-2003 Sun Microsystems, Inc. All rights reserved.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Use is subject to license terms.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#pragma ident "%Z%%M% %I% %E% SMI"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <stdio.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include "mtmalloc.h"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <unistd.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <thread.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <sys/types.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <sys/mman.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <fcntl.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <errno.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * This file tests for swap space exhaustion
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * cc -O -o exhaust exhaust.c -lmtmalloc
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinvoid * be_thread(void *);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinint iwin = 0;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinmain(int argc, char ** argv)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin{
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin int ncpus;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin thread_t tid[512];
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin int fd;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin caddr_t stacks[512];
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin srand(getpid());
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin ncpus = sysconf(_SC_NPROCESSORS_CONF);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin fd = open("/dev/zero", O_RDONLY);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (fd < 0) {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin perror("open");
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin exit(-1);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin while (ncpus--)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin stacks[ncpus] = mmap(0, 1<<23, PROT_READ|PROT_WRITE,
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin MAP_PRIVATE, fd, 0);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin close(fd);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin mallocctl(MTCHUNKSIZE, 150);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin ncpus = sysconf(_SC_NPROCESSORS_CONF);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin while (ncpus--)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin thr_create(stacks[ncpus], 1<<23, be_thread, NULL, THR_BOUND,
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin &tid[ncpus]);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin while (thr_join(NULL, NULL, NULL) == 0);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin exit(0);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin}
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/* ARGSUSED */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinvoid *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinbe_thread(void *foo)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin{
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin char *p;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (iwin) {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin printf("why am I here\n");
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin return;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if ((p = malloc(rand())) == NULL) {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin iwin = 1;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin fprintf(stderr, "Errno is %d\n", errno);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin perror("malloc");
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin } else {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin be_thread(NULL);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin printf("free %p\n", p);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin free(p);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin}
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin