xref: /illumos-gate/usr/src/cmd/dtrace/test/tst/common/ustack/tst.spin.c (revision 45ede40b2394db7967e59f19288fae9b62efd4aa)
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 (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 #include <unistd.h>
30 
31 volatile long long count = 0;
32 
33 int
34 baz(int a)
35 {
36 	(void) getpid();
37 	while (count != -1) {
38 		count++;
39 		a++;
40 	}
41 
42 	return (a + 1);
43 }
44 
45 int
46 bar(int a)
47 {
48 	return (baz(a + 1) - 1);
49 }
50 
51 int
52 foo(int a, int b)
53 {
54 	return (bar(a) - b);
55 }
56 
57 int
58 main(int argc, char **argv)
59 {
60 	return (foo(argc, (int)argv) == 0);
61 }
62