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#!/bin/bash
# Copyright (C) 1999-2022 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <https://www.gnu.org/licenses/>.
pcprofileso='@SLIBDIR@/libpcprofile.so'
pcprofiledump='@BINDIR@/pcprofiledump'
TEXTDOMAIN=libc
# Print usage message.
do_usage() {
printf $"Usage: xtrace [OPTION]... PROGRAM [PROGRAMOPTION]...\n"
exit 0
}
# Refer to --help option.
help_info() {
printf >&2 $"Try \`%s --help' or \`%s --usage' for more information.\n" xtrace xtrace
exit 1
}
# Message for missing argument.
do_missing_arg() {
printf >&2 $"%s: option '%s' requires an argument.\n" xtrace "$1"
help_info
}
# Print help message
do_help() {
printf $"Usage: xtrace [OPTION]... PROGRAM [PROGRAMOPTION]...\n"
printf $"Trace execution of program by printing currently executed function.
--data=FILE Don't run the program, just print the data from FILE.
-?,--help Print this help and exit
--usage Give a short usage message
-V,--version Print version information and exit
Mandatory arguments to long options are also mandatory for any corresponding
short options.
"
printf $"For bug reporting instructions, please see:\\n%s.\\n" \
"@REPORT_BUGS_TO@"
exit 0
}
do_version() {
echo 'xtrace @PKGVERSION@@VERSION@'
printf $"Copyright (C) %s Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
" "2021"
printf $"Written by %s.
" "Ulrich Drepper"
exit 0
}
# Print out function name, file, and line number in a nicely formatted way.
format_line() {
fct=$1
file=${2%%:*}
line=${2##*:}
width=$(expr $COLUMNS - 30)
filelen=$(expr length $file)
if test "$filelen" -gt "$width"; then
rwidth=$(expr $width - 3)
file="...$(expr substr $file $(expr 1 + $filelen - $rwidth) $rwidth)"
fi
printf '%-20s %-*s %6s\n' $fct $width $file $line
}
# If the variable COLUMNS is not set do this now.
COLUMNS=${COLUMNS:-80}
# If `TERMINAL_PROG' is not set, set it to `xterm'.
TERMINAL_PROG=${TERMINAL_PROG:-xterm}
# The data file to process, if any.
data=
# Process arguments. But stop as soon as the program name is found.
while test $# -gt 0; do
case "$1" in
--d | --da | --dat | --data)
if test $# -eq 1; then
do_missing_arg $1
fi
shift
data="$1"
;;
--d=* | --da=* | --dat=* | --data=*)
data=${1##*=}
;;
-\? | --h | --he | --hel | --help)
do_help
;;
-V | --v | --ve | --ver | --vers | --versi | --versio | --version)
do_version
;;
--u | --us | --usa | --usag | --usage)
do_usage
;;
--)
# Stop processing arguments.
shift
break
;;
--*)
printf >&2 $"xtrace: unrecognized option \`$1'\n"
help_info
;;
*)
# Unknown option. This means the rest is the program name and parameters.
break
;;
esac
shift
done
# See whether any arguments are left.
if test $# -eq 0; then
printf >&2 $"No program name given\n"
help_info
fi
# Determine the program name and check whether it exists.
program=$1
shift
if test ! -f "$program"; then
printf >&2 $"executable \`$program' not found\n"
help_info
fi
if test ! -x "$program"; then
printf >&2 $"\`$program' is no executable\n"
help_info
fi
# We have two modes. If a data file is given simply print the included data.
printf "%-20s %-*s %6s\n" Function $(expr $COLUMNS - 30) File Line
for i in $(seq 1 $COLUMNS); do printf -; done; printf '\n'
if test -n "$data"; then
$pcprofiledump "$data" |
sed 's/this = \([^,]*\).*/\1/' |
addr2line -fC -e "$program" |
while read fct; do
read file
if test "$fct" != '??' -a "$file" != '??:0'; then
format_line "$fct" "$file"
fi
done
else
fifo=$(mktemp -ut xtrace.XXXXXX) || exit
trap 'rm -f "$fifo"; exit 1' HUP INT QUIT TERM PIPE
mkfifo -m 0600 $fifo || exit 1
# Now start the program and let it write to the FIFO.
$TERMINAL_PROG -T "xtrace - $program $*" -e /bin/sh -c "LD_PRELOAD=$pcprofileso PCPROFILE_OUTPUT=$fifo $program $*; read < $fifo" &
termpid=$!
$pcprofiledump -u "$fifo" |
while read line; do
echo "$line" |
sed 's/this = \([^,]*\).*/\1/' |
addr2line -fC -e "$program"
done |
while read fct; do
read file
if test "$fct" != '??' -a "$file" != '??:0'; then
format_line "$fct" "$file"
fi
done
read -p "Press return here to close $TERMINAL_PROG($program)."
echo > "$fifo"
rm "$fifo"
fi
exit 0
# Local Variables:
# mode:ksh
# End:
|
