usr/src/cmd/dtrace/test/tst/common/speculation/tst.NoSpecBuffer.d

   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  * The number of speculative buffers defaults to one. If no speculative buffer
  32  * is available when speculation is called, an ID of zero is returned.
  33  *
  34  * SECTION: Speculative Tracing/Creating a Speculation
  35  *
  36  */
  37 #pragma D option quiet
  38
  39 BEGIN
  40 {
  41         i = 0;
  42 }
  43
  44 syscall::open:entry
  45 /i < 2/
  46 {
  47         self->spec = speculation();
  48         printf("Speculative buffer ID: %d\n", self->spec);
  49         i++;
  50 }
  51
  52 syscall:::
  53 /(2 == i) && (0 == self->spec)/
  54 {
  55         printf("i: %d\tself->spec: %d", i, self->spec);
  56         exit(0);
  57 }
  58
  59 syscall:::
  60 /(2 == i) && (0 != self->spec)/
  61 {
  62         printf("i: %d\tself->spec: %d", i, self->spec);
  63         exit(1);
  64 }