xref: /illumos-gate/usr/src/cmd/dtrace/test/tst/common/speculation/tst.CommitAfterDiscard.d (revision 2983dda76a6d296fdb560c88114fe41caad1b84f)
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 2007 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 /*
30  * ASSERTION:
31  * Call to commit() on a buffer after it has been discarded is silently
32  * ignored.
33  *
34  * SECTION: Speculative Tracing/Committing a Speculation;
35  *	Options and Tunables/cleanrate
36  *
37  */
38 #pragma D option quiet
39 #pragma D option cleanrate=3000hz
40 
41 BEGIN
42 {
43 	self->i = 0;
44 	self->commit = 0;
45 	self->discard = 0;
46 	var1 = speculation();
47 	printf("Speculation ID: %d\n", var1);
48 }
49 
50 BEGIN
51 /var1/
52 {
53 	speculate(var1);
54 	printf("This statement and the following are speculative!!\n");
55 	printf("Speculating on id: %d\n", var1);
56 	self->i++;
57 }
58 
59 BEGIN
60 /(self->i)/
61 {
62 	discard(var1);
63 	self->discard++;
64 	commit(var1);
65 	self->commit++;
66 }
67 
68 BEGIN
69 /self->commit/
70 {
71 	printf("Commited a discarded buffer\n");
72 	exit(0);
73 }
74 
75 
76 BEGIN
77 /!self->commit/
78 {
79 	printf("Couldnt commit a discarded buffer\n");
80 	exit(1);
81 }
82 
83 ERROR
84 {
85 	exit(1);
86 }
87