xref: /titanic_52/usr/src/lib/libmtmalloc/tests/wideload.c (revision ca3e8d88e8c867355e441fbc914c52e7416fc537)
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 (c) 1998 by Sun Microsystems, Inc.
24   * All rights reserved.
25   */
26  
27  #pragma	ident	"%Z%%M%	%I%	%E% SMI"
28  
29  #include <stdio.h>
30  #include <stdlib.h>
31  #include <sys/types.h>
32  #include <limits.h>
33  
34  /*
35   * This file tests for large (2GB and greater) allocations.
36   *
37   * cc -O -o wideload wideload.c -lmtmalloc
38   */
39  
40  main(int argc, char ** argv)
41  {
42  	char * foo;
43  	char * bar;
44  	size_t request = LONG_MAX;
45  
46  	foo = malloc(0); /* prime the pump */
47  
48  	foo = (char *)sbrk(0);
49  	printf ("Before big malloc brk is %p request %d\n", foo, request);
50  	foo = malloc(request + 100);
51  	bar = (char *)sbrk(0);
52  	printf ("After big malloc brk is %p\n", bar);
53  }
54