usr/src/cmd/dtrace/test/tst/common/buffering/tst.switch1.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  *   Positive test for switch buffer policy.
  32  *
  33  * SECTION: Buffers and Buffering/switch Policy;
  34  *      Buffers and Buffering/Buffer Sizes;
  35  *      Options and Tunables/bufsize;
  36  *      Options and Tunables/bufpolicy;
  37  *      Options and Tunables/switchrate
  38  */
  39
  40 /*
  41  * We assume that a printf() of an integer stores at least 8 bytes, and no more
  42  * than 16 bytes.
  43  */
  44 #pragma D option bufpolicy=switch
  45 #pragma D option bufsize=32
  46 #pragma D option switchrate=500msec
  47 #pragma D option quiet
  48
  49 int n;
  50 int i;
  51
  52 tick-1sec
  53 /n < 10/
  54 {
  55         printf("%d\n", i);
  56         i++;
  57 }
  58
  59 tick-1sec
  60 /n < 10/
  61 {
  62         n++;
  63 }
  64
  65 tick-1sec
  66 /n == 10/
  67 {
  68         exit(0);
  69 }