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 /*
28  * ASSERTION:
29  * 	trace with NULL argument - generate a bunch of errors
30  *
31  * SECTION: Options and Tunables/bufsize;
32  * 	Options and Tunables/bufpolicy
33  */
34 
35 /*
36  * We set our buffer size absurdly low to prevent a flood of errors that we
37  * don't care about.
38  */
39 
40 #pragma D option bufsize=16
41 #pragma D option bufpolicy=ring
42 
43 fbt:::
44 {
45 	on = (timestamp / 1000000000) & 1;
46 }
47 
48 fbt:::
49 /on/
50 {
51 	n++;
52 	trace(*(int *)NULL);
53 }
54 
55 dtrace:::ERROR
56 {
57 	err++;
58 }
59 
60 tick-1sec
61 /sec++ == 10/
62 {
63 	exit(2);
64 }
65 
66 END
67 /n == 0 || err == 0/
68 {
69 	exit(1);
70 }
71 
72 END
73 /n != 0 && err != 0/
74 {
75 	exit(0);
76 }
77