xref: /illumos-gate/usr/src/cmd/dtrace/test/tst/common/safety/tst.rw.d (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 #pragma D option bufsize=1000
30 #pragma D option bufpolicy=ring
31 #pragma D option statusrate=10ms
32 
33 fbt:::
34 {
35 	on = (timestamp / 1000000000) & 1;
36 }
37 
38 fbt:::
39 /on/
40 {
41 	@[rw_read_held((krwlock_t *)&`clock)] = count();
42 	@[rw_read_held((krwlock_t *)rand())] = count();
43 }
44 
45 fbt:::
46 /on/
47 {
48 	@[rw_write_held((krwlock_t *)&`clock)] = count();
49 	@[rw_write_held((krwlock_t *)rand())] = count();
50 }
51 
52 fbt:::
53 /on/
54 {
55 	@[rw_iswriter((krwlock_t *)&`clock)] = count();
56 	@[rw_iswriter((krwlock_t *)rand())] = count();
57 }
58 
59 tick-1sec
60 /n++ == 20/
61 {
62 	exit(0);
63 }
64 
65