xref: /titanic_41/usr/src/lib/libmtmalloc/tests/wideload.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright (c) 1998 by Sun Microsystems, Inc.
24*7c478bd9Sstevel@tonic-gate  * All rights reserved.
25*7c478bd9Sstevel@tonic-gate  */
26*7c478bd9Sstevel@tonic-gate 
27*7c478bd9Sstevel@tonic-gate #pragma	ident	"%Z%%M%	%I%	%E% SMI"
28*7c478bd9Sstevel@tonic-gate 
29*7c478bd9Sstevel@tonic-gate #include <stdio.h>
30*7c478bd9Sstevel@tonic-gate #include <stdlib.h>
31*7c478bd9Sstevel@tonic-gate #include <sys/types.h>
32*7c478bd9Sstevel@tonic-gate #include <limits.h>
33*7c478bd9Sstevel@tonic-gate 
34*7c478bd9Sstevel@tonic-gate /*
35*7c478bd9Sstevel@tonic-gate  * This file tests for large (2GB and greater) allocations.
36*7c478bd9Sstevel@tonic-gate  *
37*7c478bd9Sstevel@tonic-gate  * cc -O -o wideload wideload.c -lmtmalloc
38*7c478bd9Sstevel@tonic-gate  */
39*7c478bd9Sstevel@tonic-gate 
main(int argc,char ** argv)40*7c478bd9Sstevel@tonic-gate main(int argc, char ** argv)
41*7c478bd9Sstevel@tonic-gate {
42*7c478bd9Sstevel@tonic-gate 	char * foo;
43*7c478bd9Sstevel@tonic-gate 	char * bar;
44*7c478bd9Sstevel@tonic-gate 	size_t request = LONG_MAX;
45*7c478bd9Sstevel@tonic-gate 
46*7c478bd9Sstevel@tonic-gate 	foo = malloc(0); /* prime the pump */
47*7c478bd9Sstevel@tonic-gate 
48*7c478bd9Sstevel@tonic-gate 	foo = (char *)sbrk(0);
49*7c478bd9Sstevel@tonic-gate 	printf ("Before big malloc brk is %p request %d\n", foo, request);
50*7c478bd9Sstevel@tonic-gate 	foo = malloc(request + 100);
51*7c478bd9Sstevel@tonic-gate 	bar = (char *)sbrk(0);
52*7c478bd9Sstevel@tonic-gate 	printf ("After big malloc brk is %p\n", bar);
53*7c478bd9Sstevel@tonic-gate }
54