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
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
#! @PERL@
eval "exec @PERL@ -S $0 $@"
if 0;
# Copyright (C) 1997-2014 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# Contributed by Ulrich Drepper <drepper@gnu.org>, 1997.
# Based on the mtrace.awk script.
# 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
# <http://www.gnu.org/licenses/>.
$VERSION = "@VERSION@";
$PKGVERSION = "@PKGVERSION@";
$REPORT_BUGS_TO = '@REPORT_BUGS_TO@';
$progname = $0;
sub usage {
print "Usage: mtrace [OPTION]... [Binary] MtraceData\n";
print " --help print this help, then exit\n";
print " --version print version number, then exit\n";
print "\n";
print "For bug reporting instructions, please see:\n";
print "$REPORT_BUGS_TO.\n";
exit 0;
}
# We expect two arguments:
# #1: the complete path to the binary
# #2: the mtrace data filename
# The usual options are also recognized.
arglist: while (@ARGV) {
if ($ARGV[0] eq "--v" || $ARGV[0] eq "--ve" || $ARGV[0] eq "--ver" ||
$ARGV[0] eq "--vers" || $ARGV[0] eq "--versi" ||
$ARGV[0] eq "--versio" || $ARGV[0] eq "--version") {
print "mtrace $PKGVERSION$VERSION\n";
print "Copyright (C) 2013 Free Software Foundation, Inc.\n";
print "This is free software; see the source for copying conditions. There is NO\n";
print "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n";
print "Written by Ulrich Drepper <drepper\@gnu.org>\n";
exit 0;
} elsif ($ARGV[0] eq "--h" || $ARGV[0] eq "--he" || $ARGV[0] eq "--hel" ||
$ARGV[0] eq "--help") {
&usage;
} elsif ($ARGV[0] =~ /^-/) {
print "$progname: unrecognized option `$ARGV[0]'\n";
print "Try `$progname --help' for more information.\n";
exit 1;
} else {
last arglist;
}
}
if ($#ARGV == 0) {
$binary="";
$data=$ARGV[0];
} elsif ($#ARGV == 1) {
$binary=$ARGV[0];
$data=$ARGV[1];
if ($binary =~ /^.*[\/].*$/) {
$prog = $binary;
} else {
$prog = "./$binary";
}
if (open (LOCS, "env LD_TRACE_LOADED_OBJECTS=1 $prog |")) {
while (<LOCS>) {
chop;
if (/^.*=> (.*) .(0x[0123456789abcdef]*).$/) {
$locs{$1} = $2;
}
}
close (LOCS);
}
} else {
die "Wrong number of arguments, run $progname --help for help.";
}
sub location {
my $str = pop(@_);
return $str if ($str eq "");
if ($str =~ /.*[[](0x[^]]*)]:(.)*/) {
my $addr = $1;
my $fct = $2;
return $cache{$addr} if (exists $cache{$addr});
if ($binary ne "" && open (ADDR, "addr2line -e $binary $addr|")) {
my $line = <ADDR>;
chomp $line;
close (ADDR);
if ($line ne '??:0') {
$cache{$addr} = $line;
return $cache{$addr};
}
}
$cache{$addr} = $str = "$fct @ $addr";
} elsif ($str =~ /^(.*):.*[[](0x[^]]*)]$/) {
my $prog = $1;
my $addr = $2;
my $searchaddr;
return $cache{$addr} if (exists $cache{$addr});
if ($locs{$prog} ne "") {
$searchaddr = sprintf "%#x", $addr - $locs{$prog};
} else {
$searchaddr = $addr;
$prog = $binary;
}
if ($binary ne "" && open (ADDR, "addr2line -e $prog $searchaddr|")) {
my $line = <ADDR>;
chomp $line;
close (ADDR);
if ($line ne '??:0') {
$cache{$addr} = $line;
return $cache{$addr};
}
}
$cache{$addr} = $str = $addr;
} elsif ($str =~ /^.*[[](0x[^]]*)]$/) {
my $addr = $1;
return $cache{$addr} if (exists $cache{$addr});
if ($binary ne "" && open (ADDR, "addr2line -e $binary $addr|")) {
my $line = <ADDR>;
chomp $line;
close (ADDR);
if ($line ne '??:0') {
$cache{$addr} = $line;
return $cache{$addr};
}
}
$cache{$addr} = $str = $addr;
}
return $str;
}
$nr=0;
open(DATA, "<$data") || die "Cannot open mtrace data file";
while (<DATA>) {
my @cols = split (' ');
my $n, $where;
if ($cols[0] eq "@") {
# We have address and/or function name.
$where=$cols[1];
$n=2;
} else {
$where="";
$n=0;
}
$allocaddr=$cols[$n + 1];
$howmuch=hex($cols[$n + 2]);
++$nr;
SWITCH: {
if ($cols[$n] eq "+") {
if (defined $allocated{$allocaddr}) {
printf ("+ %#0@XXX@x Alloc %d duplicate: %s %s\n",
hex($allocaddr), $nr, &location($addrwas{$allocaddr}),
$where);
} else {
$allocated{$allocaddr}=$howmuch;
$addrwas{$allocaddr}=$where;
}
last SWITCH;
}
if ($cols[$n] eq "-") {
if (defined $allocated{$allocaddr}) {
undef $allocated{$allocaddr};
undef $addrwas{$allocaddr};
} else {
printf ("- %#0@XXX@x Free %d was never alloc'd %s\n",
hex($allocaddr), $nr, &location($where));
}
last SWITCH;
}
if ($cols[$n] eq "<") {
if (defined $allocated{$allocaddr}) {
undef $allocated{$allocaddr};
undef $addrwas{$allocaddr};
} else {
printf ("- %#0@XXX@x Realloc %d was never alloc'd %s\n",
hex($allocaddr), $nr, &location($where));
}
last SWITCH;
}
if ($cols[$n] eq ">") {
if (defined $allocated{$allocaddr}) {
printf ("+ %#0@XXX@x Realloc %d duplicate: %#010x %s %s\n",
hex($allocaddr), $nr, $allocated{$allocaddr},
&location($addrwas{$allocaddr}), &location($where));
} else {
$allocated{$allocaddr}=$howmuch;
$addrwas{$allocaddr}=$where;
}
last SWITCH;
}
if ($cols[$n] eq "=") {
# Ignore "= Start".
last SWITCH;
}
if ($cols[$n] eq "!") {
# Ignore failed realloc for now.
last SWITCH;
}
}
}
close (DATA);
# Now print all remaining entries.
@addrs= keys %allocated;
$anything=0;
if ($#addrs >= 0) {
foreach $addr (sort @addrs) {
if (defined $allocated{$addr}) {
if ($anything == 0) {
print "\nMemory not freed:\n-----------------\n";
print ' ' x (@XXX@ - 7), "Address Size Caller\n";
$anything=1;
}
printf ("%#0@XXX@x %#8x at %s\n", hex($addr), $allocated{$addr},
&location($addrwas{$addr}));
}
}
}
print "No memory leaks.\n" if ($anything == 0);
exit $anything != 0;
|
