usr/src/cmd/dtrace/test/tst/common/safety/tst.random.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  *      trace rand() at every fbt probe point.
  32  *
  33  * SECTION: Actions and Subroutines/rand();
  34  *      Options and Tunables/bufsize;
  35  *      Options and Tunables/bufpolicy
  36  */
  37
  38 /*
  39  * We set our buffer size absurdly low to prevent a flood of errors that we
  40  * don't care about.
  41  */
  42
  43 #pragma D option bufsize=16
  44 #pragma D option bufpolicy=ring
  45
  46 fbt:::
  47 {
  48         n++;
  49         trace(*(int *)rand());
  50 }
  51
  52 dtrace:::ERROR
  53 {
  54         err++;
  55 }
  56
  57 tick-1sec
  58 /sec++ == 10/
  59 {
  60         exit(2);
  61 }
  62
  63 END
  64 /n == 0 || err == 0/
  65 {
  66         exit(1);
  67 }
  68
  69 END
  70 /n != 0 && err != 0/
  71 {
  72         exit(0);
  73 }