xref: /illumos-gate/usr/src/cmd/dtrace/test/tst/common/speculation/bug.1001148.SpecSizeVariations.d (revision 581cede61ac9c14d8d4ea452562a567189eead78)
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 /*
30  * ASSERTION:
31  * Verify the behavior of variations in specsize.
32  *
33  * SECTION: Speculative Tracing/Options and Tuning;
34  *	Options and Tunables/specsize
35  *
36  * BUG: 1001148
37  *
38  * NOTES: This code has four different behaviors.
39  * 1. 0 < specsize < 8
40  * 2. 8 <= specsize <= 39 || 0 == specsize
41  * 3. 40 <= specsize
42  * 4. 0 > specsize
43  *
44  */
45 
46 #pragma D option quiet
47 #pragma D option specsize=10
48 
49 BEGIN
50 {
51 	self->speculateFlag = 0;
52 	self->commitFlag = 0;
53 	self->spec = speculation();
54 	printf("Speculative buffer ID: %d\n", self->spec);
55 }
56 
57 BEGIN
58 {
59 	speculate(self->spec);
60 	printf("Lots of data\n");
61 	printf("Has to be crammed into this buffer\n");
62 	printf("Until it overflows\n");
63 	printf("And causes flops\n");
64 	self->speculateFlag++;
65 
66 }
67 
68 BEGIN
69 /1 <= self->speculateFlag/
70 {
71 	commit(self->spec);
72 	self->commitFlag++;
73 }
74 
75 BEGIN
76 /1 <= self->commitFlag/
77 {
78 	printf("Statement was executed\n");
79 	exit(0);
80 }
81 
82 BEGIN
83 /1 > self->commitFlag/
84 {
85 	printf("Statement wasn't executed\n");
86 	exit(1);
87 }
88