xref: /illumos-gate/usr/src/cmd/dtrace/test/tst/common/ustack/tst.spin.c (revision 20a7641f9918de8574b8b3b47dbe35c4bfc78df1)
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 #include <unistd.h>
28 
29 volatile long long count = 0;
30 
31 int
32 baz(int a)
33 {
34 	(void) getpid();
35 	while (count != -1) {
36 		count++;
37 		a++;
38 	}
39 
40 	return (a + 1);
41 }
42 
43 int
44 bar(int a)
45 {
46 	return (baz(a + 1) - 1);
47 }
48 
49 int
50 foo(int a, int b)
51 {
52 	return (bar(a) - b);
53 }
54 
55 int
56 main(int argc, char **argv)
57 {
58 	return (foo(argc, (int)argv) == 0);
59 }
60