xref: /titanic_41/usr/src/lib/libmtmalloc/tests/wideload.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
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 
main(int argc,char ** argv)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