tst.trapstat.ksh revision 178476
1255570Strasz#/bin/ksh -p 2255570Strasz# 3255570Strasz# CDDL HEADER START 4255570Strasz# 5255570Strasz# The contents of this file are subject to the terms of the 6255570Strasz# Common Development and Distribution License (the "License"). 7255570Strasz# You may not use this file except in compliance with the License. 8255570Strasz# 9255570Strasz# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10255570Strasz# or http://www.opensolaris.org/os/licensing. 11255570Strasz# See the License for the specific language governing permissions 12255570Strasz# and limitations under the License. 13255570Strasz# 14255570Strasz# When distributing Covered Code, include this CDDL HEADER in each 15255570Strasz# file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16255570Strasz# If applicable, add the following below this CDDL HEADER, with the 17255570Strasz# fields enclosed by brackets "[]" replaced with your own identifying 18255570Strasz# information: Portions Copyright [yyyy] [name of copyright owner] 19255570Strasz# 20255570Strasz# CDDL HEADER END 21255570Strasz# 22255570Strasz 23255570Strasz# 24255570Strasz# Copyright 2007 Sun Microsystems, Inc. All rights reserved. 25255570Strasz# Use is subject to license terms. 26255570Strasz# 27255570Strasz# ident "%Z%%M% %I% %E% SMI" 28255570Strasz 29255570Strasz# 30255570Strasz# This script verifies that user-land stacks can be walked safely 31255570Strasz# when the trapstat(1M) utility is running. An arbitrary program, w(1), 32255570Strasz# is started once a second to ensure stacks can be walked at all stages 33255570Strasz# of the process lifecycle. 34255570Strasz# 35268682Smav 36268682Smavscript() 37268682Smav{ 38268682Smav $dtrace -o $dtraceout -s /dev/stdin <<EOF 39255570Strasz fbt::: 40255570Strasz { 41268685Smav @[ustackdepth] = count(); 42255570Strasz } 43255570StraszEOF 44255570Strasz} 45255570Strasz 46268682Smavrun_commands() 47268682Smav{ 48273319Smav cnt=0 49268682Smav 50255570Strasz while [ $cnt -lt 10 ]; do 51255570Strasz w > /dev/null 52255570Strasz sleep 1 53255570Strasz cnt=$(($cnt+1)) 54255570Strasz done 55255570Strasz} 56255570Strasz 57255570Straszif [ $# != 1 ]; then 58255570Strasz echo expected one argument: '<'dtrace-path'>' 59255570Strasz exit 2 60273310Smavfi 61276613Smav 62255570Straszdtrace=$1 63255570Straszdtraceout=/tmp/dtrace.out.$$ 64255570Straszscript 2>/dev/null & 65255570Strasztimeout=15 66255570Strasz 67255570Strasz# 68255570Strasz# Sleep while the above script fires into life. To guard against dtrace dying 69255570Strasz# and us sleeping forever we allow 15 secs for this to happen. This should be 70255570Strasz# enough for even the slowest systems. 71255570Strasz# 72255570Straszwhile [ ! -f $dtraceout ]; do 73255570Strasz sleep 1 74255570Strasz timeout=$(($timeout-1)) 75255570Strasz if [ $timeout -eq 0 ]; then 76255570Strasz echo "dtrace failed to start. Exiting." 77255570Strasz exit 1 78255570Strasz fi 79255570Straszdone 80255570Strasz 81255570Straszrun_commands & 82255570Strasztrapstat -t 1 10 83255570Straszstatus=$? 84255570Strasz 85268258Smavrm $dtraceout 86268691Smav 87255570Straszexit $status 88255570Strasz