usr/src/cmd/dtrace/test/tst/common/speculation/tst.SpeculationCommit.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 2007 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: Test the normal behavior of speculate() and commit().
  31  *
  32  * SECTION: Speculative Tracing/Committing a Speculation;
  33  *      Actions and Subroutines/speculation();
  34  *      Options and Tunables/cleanrate
  35  *
  36  */
  37 #pragma D option quiet
  38 #pragma D option cleanrate=2000hz
  39
  40 BEGIN
  41 {
  42         self->var = speculation();
  43         printf("Speculation ID: %d\n", self->var);
  44         self->speculate = 0;
  45         self->commit = 0;
  46 }
  47
  48 BEGIN
  49 /1 > self->speculate/
  50 {
  51         speculate(self->var);
  52         self->speculate++;
  53         printf("Called speculate on id: %d\n", self->var);
  54 }
  55
  56 BEGIN
  57 /1 <= self->speculate/
  58 {
  59         commit(self->var);
  60         self->commit++;
  61 }
  62
  63 BEGIN
  64 /(1 == self->commit)/
  65 {
  66         printf("Succesfully tested buffer commit\n");
  67         exit(0);
  68 }
  69
  70 BEGIN
  71 /(0 == self->commit)/
  72 {
  73         printf("Failed to commit buffer\n");
  74         exit(1);
  75 }