xref: /illumos-gate/usr/src/cmd/dtrace/test/tst/common/speculation/tst.SpecSizeVariations1.d (revision 058561cbaa119a6f2659bc27ef343e1b47266bb2)
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  * ASSERTION:
30  * Verify the behavior of speculations with changes in specsize.
31  *
32  * SECTION: Speculative Tracing/Options and Tuning;
33  *	Options and Tunables/specsize
34  *
35  */
36 
37 #pragma D option quiet
38 #pragma D option specsize=8
39 
40 BEGIN
41 {
42 	self->speculateFlag = 0;
43 	self->commitFlag = 0;
44 	self->spec = speculation();
45 	printf("Speculative buffer ID: %d\n", self->spec);
46 }
47 
48 BEGIN
49 {
50 	speculate(self->spec);
51 	printf("Lots of data\n");
52 	printf("Has to be crammed into this buffer\n");
53 	printf("Until it overflows\n");
54 	printf("And causes flops\n");
55 	self->speculateFlag++;
56 
57 }
58 
59 BEGIN
60 /1 <= self->speculateFlag/
61 {
62 	commit(self->spec);
63 	self->commitFlag++;
64 }
65 
66 BEGIN
67 /1 <= self->commitFlag/
68 {
69 	printf("Statement was executed\n");
70 	exit(1);
71 }
72 
73 BEGIN
74 /1 > self->commitFlag/
75 {
76 	printf("Statement wasn't executed\n");
77 	exit(0);
78 }
79