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.
6 # Copyright (c) 2012-2018 The strace developers.
8 # Redistribution and use in source and binary forms, with or without
9 # modification, are permitted provided that the following conditions
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.
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.
33 Usage: ${0##*/} STRACE_LOG
35 Finds all STRACE_LOG.PID files, adds PID prefix to every line,
36 then combines and sorts them, and prints result to standard output.
38 It is assumed that STRACE_LOGs were produced by strace with -tt[t]
39 option which prints timestamps (otherwise sorting won't do any good).
49 elif [ "$1" = '--help' ]; then
56 for file in "$logfile".*; do
57 [ -f "$file" ] || continue
58 suffix=${file#"$logfile".}
59 [ "$suffix" -gt 0 ] 2> /dev/null ||
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"
68 | sort -s -n -k1,1 | sed -n 's/^[0-9][0-9]* //p'
72 echo >&2 "${0##*/}: $logfile: strace output not found"