1178476Sjb#/bin/ksh -p 2178476Sjb# 3178476Sjb# CDDL HEADER START 4178476Sjb# 5178476Sjb# The contents of this file are subject to the terms of the 6178476Sjb# Common Development and Distribution License (the "License"). 7178476Sjb# You may not use this file except in compliance with the License. 8178476Sjb# 9178476Sjb# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10178476Sjb# or http://www.opensolaris.org/os/licensing. 11178476Sjb# See the License for the specific language governing permissions 12178476Sjb# and limitations under the License. 13178476Sjb# 14178476Sjb# When distributing Covered Code, include this CDDL HEADER in each 15178476Sjb# file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16178476Sjb# If applicable, add the following below this CDDL HEADER, with the 17178476Sjb# fields enclosed by brackets "[]" replaced with your own identifying 18178476Sjb# information: Portions Copyright [yyyy] [name of copyright owner] 19178476Sjb# 20178476Sjb# CDDL HEADER END 21178476Sjb# 22178476Sjb 23178476Sjb# 24178476Sjb# Copyright 2007 Sun Microsystems, Inc. All rights reserved. 25178476Sjb# Use is subject to license terms. 26178476Sjb# 27178476Sjb# ident "%Z%%M% %I% %E% SMI" 28178476Sjb 29178476Sjb# 30178476Sjb# This script verifies that user-land stacks can be walked safely 31178476Sjb# when the trapstat(1M) utility is running. An arbitrary program, w(1), 32178476Sjb# is started once a second to ensure stacks can be walked at all stages 33178476Sjb# of the process lifecycle. 34178476Sjb# 35178476Sjb 36178476Sjbscript() 37178476Sjb{ 38178476Sjb $dtrace -o $dtraceout -s /dev/stdin <<EOF 39178476Sjb fbt::: 40178476Sjb { 41178476Sjb @[ustackdepth] = count(); 42178476Sjb } 43178476SjbEOF 44178476Sjb} 45178476Sjb 46178476Sjbrun_commands() 47178476Sjb{ 48178476Sjb cnt=0 49178476Sjb 50178476Sjb while [ $cnt -lt 10 ]; do 51178476Sjb w > /dev/null 52178476Sjb sleep 1 53178476Sjb cnt=$(($cnt+1)) 54178476Sjb done 55178476Sjb} 56178476Sjb 57178476Sjbif [ $# != 1 ]; then 58178476Sjb echo expected one argument: '<'dtrace-path'>' 59178476Sjb exit 2 60178476Sjbfi 61178476Sjb 62178476Sjbdtrace=$1 63178476Sjbdtraceout=/tmp/dtrace.out.$$ 64178476Sjbscript 2>/dev/null & 65178476Sjbtimeout=15 66178476Sjb 67178476Sjb# 68178476Sjb# Sleep while the above script fires into life. To guard against dtrace dying 69178476Sjb# and us sleeping forever we allow 15 secs for this to happen. This should be 70178476Sjb# enough for even the slowest systems. 71178476Sjb# 72178476Sjbwhile [ ! -f $dtraceout ]; do 73178476Sjb sleep 1 74178476Sjb timeout=$(($timeout-1)) 75178476Sjb if [ $timeout -eq 0 ]; then 76178476Sjb echo "dtrace failed to start. Exiting." 77178476Sjb exit 1 78178476Sjb fi 79178476Sjbdone 80178476Sjb 81178476Sjbrun_commands & 82178476Sjbtrapstat -t 1 10 83178476Sjbstatus=$? 84178476Sjb 85178476Sjbrm $dtraceout 86178476Sjb 87178476Sjbexit $status 88