usr/src/cmd/dtrace/test/tst/common/speculation/tst.SpeculationWithZero.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  * Calling speculate() with zero does not have any ill effects.
  32  * Statement after speculate does not execute.
  33  *
  34  * SECTION: Speculative Tracing/Creating a Speculation
  35  */
  36
  37 #pragma D option quiet
  38
  39 BEGIN
  40 {
  41         self->speculateFlag = 0;
  42         self->spec = speculation();
  43         self->spec = speculation();
  44         printf("Speculative buffer ID: %d\n", self->spec);
  45 }
  46
  47 BEGIN
  48 {
  49         speculate(self->spec);
  50         self->speculateFlag++;
  51 }
  52
  53 BEGIN
  54 /1 == self->speculateFlag/
  55 {
  56         printf("Statement was executed\n");
  57         exit(1);
  58 }
  59
  60 BEGIN
  61 /1 != self->speculateFlag/
  62 {
  63         printf("Statement wasn't executed\n");
  64         exit(0);
  65 }