1#!/bin/sh 2# 3# This script processes strace -ff -tt output. It merges the contents of all 4# STRACE_LOG.PID files and sorts them, printing result on the standard output. 5# 6# Copyright (c) 2012-2017 The strace developers. 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in the 15# documentation and/or other materials provided with the distribution. 16# 3. The name of the author may not be used to endorse or promote products 17# derived from this software without specific prior written permission. 18# 19# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30show_usage() 31{ 32 cat <<__EOF__ 33Usage: ${0##*/} STRACE_LOG 34 35Finds all STRACE_LOG.PID files, adds PID prefix to every line, 36then combines and sorts them, and prints result to standard output. 37 38It is assumed that STRACE_LOGs were produced by strace with -tt[t] 39option which prints timestamps (otherwise sorting won't do any good). 40__EOF__ 41} 42 43dd='\([0-9][0-9]\)' 44ds='\([0-9][0-9]*\)' 45 46if [ $# -ne 1 ]; then 47 show_usage >&2 48 exit 1 49elif [ "$1" = '--help' ]; then 50 show_usage 51 exit 0 52fi 53 54logfile=$1 55 56for file in "$logfile".*; do 57 [ -f "$file" ] || continue 58 suffix=${file#"$logfile".} 59 [ "$suffix" -gt 0 ] 2> /dev/null || 60 continue 61 pid=$(printf "%-5s" $suffix) 62 # Some strace logs have last line which is not '\n' terminated, 63 # so add extra newline to every file. 64 # grep -v '^$' removes empty lines which may result. 65 sed -n "s/^\($dd:\)\?\($dd:\)\?\($ds\.\)\?$ds /\2\4\6\7 $pid \0/p" < "$file" 66 echo 67done \ 68| sort -s -n -k1,1 | sed -n 's/^[0-9][0-9]* //p' 69 70rc=$? 71[ $rc -eq 1 ] && 72 echo >&2 "${0##*/}: $logfile: strace output not found" 73exit $rc 74