2 eval "exec @PERL@ -S $0 $@"
4 # Copyright (C) 1997-2021 Free Software Foundation, Inc.
5 # This file is part of the GNU C Library.
6 # Based on the mtrace.awk script.
8 # The GNU C Library is free software; you can redistribute it and/or
9 # modify it under the terms of the GNU Lesser General Public
10 # License as published by the Free Software Foundation; either
11 # version 2.1 of the License, or (at your option) any later version.
13 # The GNU C Library is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 # Lesser General Public License for more details.
18 # You should have received a copy of the GNU Lesser General Public
19 # License along with the GNU C Library; if not, see
20 # <https://www.gnu.org/licenses/>.
22 $VERSION = "@VERSION@";
23 $PKGVERSION = "@PKGVERSION@";
24 $REPORT_BUGS_TO = '@REPORT_BUGS_TO@';
28 print "Usage: mtrace [OPTION]... [Binary] MtraceData\n";
29 print " --help print this help, then exit\n";
30 print " --version print version number, then exit\n";
32 print "For bug reporting instructions, please see:\n";
33 print "$REPORT_BUGS_TO.\n";
37 # We expect two arguments:
38 # #1: the complete path to the binary
39 # #2: the mtrace data filename
40 # The usual options are also recognized.
42 arglist
: while (@ARGV) {
43 if ($ARGV[0] eq "--v" || $ARGV[0] eq "--ve" || $ARGV[0] eq "--ver" ||
44 $ARGV[0] eq "--vers" || $ARGV[0] eq "--versi" ||
45 $ARGV[0] eq "--versio" || $ARGV[0] eq "--version") {
46 print "mtrace $PKGVERSION$VERSION\n";
47 print "Copyright (C) 2021 Free Software Foundation, Inc.\n";
48 print "This is free software; see the source for copying conditions. There is NO\n";
49 print "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n";
50 print "Written by Ulrich Drepper <drepper\@gnu.org>\n";
53 } elsif ($ARGV[0] eq "--h" || $ARGV[0] eq "--he" || $ARGV[0] eq "--hel" ||
54 $ARGV[0] eq "--help") {
56 } elsif ($ARGV[0] =~ /^-/) {
57 print "$progname: unrecognized option `$ARGV[0]'\n";
58 print "Try `$progname --help' for more information.\n";
68 } elsif ($#ARGV == 1) {
72 if ($binary =~ /^.*[\/].*$/) {
77 # Set the environment variable LD_TRACE_PRELINKING to an empty string so
78 # that we trigger tracing but do not match with the executable or any of
80 if (open (LOCS
, "env LD_TRACE_PRELINKING= $prog |")) {
83 if (/^.*=> (.*) \((0x[0123456789abcdef]*), (0x[0123456789abcdef]*).*/) {
85 $rel{$1} = hex($2) - hex($3);
91 die "Wrong number of arguments, run $progname --help for help.";
96 return $str if ($str eq "");
97 if ($str =~ /.*[[](0x[^]]*)]:(.)*/) {
100 return $cache{$addr} if (exists $cache{$addr});
101 if ($binary ne "" && open (ADDR
, "addr2line -e $binary $addr|")) {
105 if ($line ne '??:0') {
106 $cache{$addr} = $line;
107 return $cache{$addr};
110 $cache{$addr} = $str = "$fct @ $addr";
111 } elsif ($str =~ /^(.*):.*[[](0x[^]]*)]$/) {
115 return $cache{$addr} if (exists $cache{$addr});
116 $searchaddr = sprintf "%#x", hex($addr) + $rel{$prog};
117 if ($binary ne "" && open (ADDR
, "addr2line -e $prog $searchaddr|")) {
121 if ($line ne '??:0') {
122 $cache{$addr} = $line;
123 return $cache{$addr};
126 $cache{$addr} = $str = $addr;
127 } elsif ($str =~ /^.*[[](0x[^]]*)]$/) {
129 return $cache{$addr} if (exists $cache{$addr});
130 if ($binary ne "" && open (ADDR
, "addr2line -e $binary $addr|")) {
134 if ($line ne '??:0') {
135 $cache{$addr} = $line;
136 return $cache{$addr};
139 $cache{$addr} = $str = $addr;
145 open(DATA
, "<$data") || die "Cannot open mtrace data file";
147 my @cols = split (' ');
149 if ($cols[0] eq "@") {
150 # We have address and/or function name.
158 $allocaddr=$cols[$n + 1];
159 $howmuch=hex($cols[$n + 2]);
163 if ($cols[$n] eq "+") {
164 if (defined $allocated{$allocaddr}) {
165 printf ("+ %#0@XXX@x Alloc %d duplicate: %s %s\n",
166 hex($allocaddr), $nr, &location
($addrwas{$allocaddr}),
168 } elsif ($allocaddr =~ /^0x/) {
169 $allocated{$allocaddr}=$howmuch;
170 $addrwas{$allocaddr}=$where;
174 if ($cols[$n] eq "-") {
175 if (defined $allocated{$allocaddr}) {
176 undef $allocated{$allocaddr};
177 undef $addrwas{$allocaddr};
179 printf ("- %#0@XXX@x Free %d was never alloc'd %s\n",
180 hex($allocaddr), $nr, &location
($where));
184 if ($cols[$n] eq "<") {
185 if (defined $allocated{$allocaddr}) {
186 undef $allocated{$allocaddr};
187 undef $addrwas{$allocaddr};
189 printf ("- %#0@XXX@x Realloc %d was never alloc'd %s\n",
190 hex($allocaddr), $nr, &location
($where));
194 if ($cols[$n] eq ">") {
195 if (defined $allocated{$allocaddr}) {
196 printf ("+ %#0@XXX@x Realloc %d duplicate: %#010x %s %s\n",
197 hex($allocaddr), $nr, $allocated{$allocaddr},
198 &location
($addrwas{$allocaddr}), &location
($where));
200 $allocated{$allocaddr}=$howmuch;
201 $addrwas{$allocaddr}=$where;
205 if ($cols[$n] eq "=") {
209 if ($cols[$n] eq "!") {
210 # Ignore failed realloc for now.
217 # Now print all remaining entries.
218 @addrs= keys %allocated;
221 foreach $addr (sort @addrs) {
222 if (defined $allocated{$addr}) {
223 if ($anything == 0) {
224 print "\nMemory not freed:\n-----------------\n";
225 print ' ' x
(@XXX@
- 7), "Address Size Caller\n";
228 printf ("%#0@XXX@x %#8x at %s\n", hex($addr), $allocated{$addr},
229 &location
($addrwas{$addr}));
233 print "No memory leaks.\n" if ($anything == 0);