xref: /illumos-gate/usr/src/cmd/dtrace/test/tst/common/buffering/tst.resize3.d (revision 241c90a06e8d1708235651863df515a2d522a03a)
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  *	Checks that setting "bufresize" to "auto" will cause buffer
32  *	allocation to succeed, even for large speculative buffer sizes.
33  *
34  * SECTION: Buffers and Buffering/Buffer Resizing Policy;
35  *	Options and Tunables/specsize;
36  *	Options and Tunables/bufresize
37  *
38  * NOTES:
39  *	On some small memory machines, this test may consume so much memory
40  *	that it induces memory allocation failure in the dtrace library.  This
41  *	will manifest itself as an error like one of the following:
42  *
43  *	    dtrace: processing aborted: Memory allocation failure
44  *	    dtrace: could not enable tracing: Memory allocation failure
45  *
46  *	These actually indicate that the test performed as expected; failures
47  *	of the above nature should therefore be ignored.
48  *
49  */
50 
51 #pragma D option bufresize=auto
52 #pragma D option specsize=100t
53 
54 BEGIN
55 {
56 	spec = speculation();
57 }
58 
59 BEGIN
60 {
61 	speculate(spec);
62 	trace(epid);
63 }
64 
65 BEGIN
66 {
67 	commit(spec);
68 }
69 
70 BEGIN
71 {
72 	exit(0);
73 }
74