xref: /illumos-gate/usr/src/cmd/dtrace/test/tst/common/speculation/err.NegativeBufSize.d (revision 59d65d3175825093531e82f44269d948ed510a00)
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  * Verify the behavior of variations in bufsize.
30  *
31  * SECTION: Speculative Tracing/Options and Tuning;
32  *	Options and Tunables/bufsize
33  *
34  * NOTES: This test behaves differently depending on the values
35  * assigned to bufsize.
36  * 1. 0 > bufsize.
37  * 2. 0 == bufsize.
38  * 3. 0 < bufsize <= 7
39  * 4. 8 <= bufsize <= 31
40  * 5. 32 <= bufsize <= 47
41  * 6. 48 <= bufsize <= 71
42  * 7. 72 <= bufsize
43  */
44 
45 #pragma D option quiet
46 #pragma D option bufsize=-72
47 
48 BEGIN
49 {
50 	self->speculateFlag = 0;
51 	self->commitFlag = 0;
52 	self->spec = speculation();
53 	printf("Speculative buffer ID: %d\n", self->spec);
54 }
55 
56 BEGIN
57 {
58 	speculate(self->spec);
59 	printf("Lots of data\n");
60 	printf("Has to be crammed into this buffer\n");
61 	printf("Until it overflows\n");
62 	printf("And causes flops\n");
63 	self->speculateFlag++;
64 
65 }
66 
67 BEGIN
68 /1 <= self->speculateFlag/
69 {
70 	commit(self->spec);
71 	self->commitFlag++;
72 }
73 
74 BEGIN
75 /1 <= self->commitFlag/
76 {
77 	printf("Statement was executed\n");
78 	exit(0);
79 }
80 
81 BEGIN
82 /1 > self->commitFlag/
83 {
84 	printf("Statement wasn't executed\n");
85 	exit(1);
86 }
87