1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
#!/bin/bash
# Copyright (C) 1999-2021 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# Contributed by Ulrich Drepper <drepper@gnu.org>, 1999.
# 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:
|
