usr/src/cmd/dtrace/test/tst/common/profile-n/tst.func.ksh

   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 # ident "%Z%%M% %I%     %E% SMI"
  27
  28 script()
  29 {
  30         $dtrace -qs /dev/stdin <<EOF
  31         profile-1234hz
  32         /arg0 != 0/
  33         {
  34                 @[func(arg0)] = count();
  35         }
  36
  37         tick-100ms
  38         /i++ == 50/
  39         {
  40                 exit(0);
  41         }
  42 EOF
  43 }
  44
  45 spinny()
  46 {
  47         while true; do
  48                 /usr/bin/date > /dev/null
  49         done
  50 }
  51
  52 if [ $# != 1 ]; then
  53         echo expected one argument: '<'dtrace-path'>'
  54         exit 2
  55 fi
  56
  57 dtrace=$1
  58
  59 spinny &
  60 child=$!
  61
  62 #
  63 # This is gutsy -- we're assuming that mutex_enter(9F) will show up in the
  64 # output.  This is most likely _not_ to show up in the output if the
  65 # platform does not support arbitrary resolution interval timers -- but
  66 # the above script was stress-tested down to 100 hertz and still ran
  67 # successfully on all platforms, so one is hopeful that this test will pass
  68 # even in that case.
  69 #
  70 script | tee /dev/fd/2 | grep mutex_enter > /dev/null
  71 status=$?
  72
  73 kill $child
  74 exit $status