usr/src/cmd/dtrace/demo/vars/clause.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, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 int me;                 /* an integer global variable */
  28 this int foo;           /* an integer clause-local variable */
  29
  30 tick-1sec
  31 {
  32         /*
  33          * Set foo to be 10 if and only if this is the first clause executed.
  34          */
  35         this->foo = (me % 3 == 0) ? 10 : this->foo;
  36         printf("Clause 1 is number %d; foo is %d\n", me++ % 3, this->foo++);
  37 }
  38
  39 tick-1sec
  40 {
  41         /*
  42          * Set foo to be 20 if and only if this is the first clause executed.
  43          */
  44         this->foo = (me % 3 == 0) ? 20 : this->foo;
  45         printf("Clause 2 is number %d; foo is %d\n", me++ % 3, this->foo++);
  46 }
  47
  48 tick-1sec
  49 {
  50         /*
  51          * Set foo to be 30 if and only if this is the first clause executed.
  52          */
  53         this->foo = (me % 3 == 0) ? 30 : this->foo;
  54         printf("Clause 3 is number %d; foo is %d\n", me++ % 3, this->foo++);
  55 }