74 lines
2.6 KiB
Plaintext
74 lines
2.6 KiB
Plaintext
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#!/bin/sh
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#
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# This script processes strace -ff -tt output. It merges the contents of all
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# STRACE_LOG.PID files and sorts them, printing result on the standard output.
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#
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# Copyright (c) 2012-2018 The strace developers.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. The name of the author may not be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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show_usage()
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{
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cat <<__EOF__
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Usage: ${0##*/} STRACE_LOG
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Finds all STRACE_LOG.PID files, adds PID prefix to every line,
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then combines and sorts them, and prints result to standard output.
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It is assumed that STRACE_LOGs were produced by strace with -tt[t]
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option which prints timestamps (otherwise sorting won't do any good).
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__EOF__
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}
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dd='\([0-9][0-9]\)'
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ds='\([0-9][0-9]*\)'
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if [ $# -ne 1 ]; then
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show_usage >&2
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exit 1
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elif [ "$1" = '--help' ]; then
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show_usage
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exit 0
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fi
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logfile=$1
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for file in "$logfile".*; do
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[ -f "$file" ] || continue
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suffix=${file#"$logfile".}
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[ "$suffix" -gt 0 ] 2> /dev/null ||
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continue
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pid=$(printf "%-5s" $suffix)
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# Some strace logs have last line which is not '\n' terminated,
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# so add extra newline to every file.
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# grep -v '^$' removes empty lines which may result.
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sed -n "s/^\($dd:\)\?\($dd:\)\?\($ds\.\)\?$ds /\2\4\6\7 $pid \0/p" < "$file"
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echo
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done \
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| sort -s -n -k1,1 | sed -n 's/^[0-9][0-9]* //p'
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rc=$?
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[ $rc -eq 1 ] &&
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echo >&2 "${0##*/}: $logfile: strace output not found"
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exit $rc
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