malloc/mtrace.pl

   1 #! @PERL@
   2 eval "exec @PERL@ -S $0 $*"
   3     if 0;
   4 # Copyright (C) 1997 Free Software Foundation, Inc.
   5 # This file is part of the GNU C Library.
   6 # Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1997.
   7 # Based on the mtrace.awk script.
   8
   9 # The GNU C Library is free software; you can redistribute it and/or
  10 # modify it under the terms of the GNU Library General Public License as
  11 # published by the Free Software Foundation; either version 2 of the
  12 # License, or (at your option) any later version.
  13
  14 # The GNU C Library is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17 # Library General Public License for more details.
  18
  19 # You should have received a copy of the GNU Library General Public
  20 # License along with the GNU C Library; see the file COPYING.LIB.  If not,
  21 # write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  22 # Boston, MA 02111-1307, USA.
  23
  24 $VERSION = "@VERSION@";
  25 $PACKAGE = "libc";
  26 $progname = $0;
  27
  28 sub usage {
  29     print "Usage: mtrace [OPTION]... [Binary] MtraceData\n";
  30     print "  --help       print this help, then exit\n";
  31     print "  --version    print version number, then exit\n";
  32     exit 0;
  33 }
  34
  35 # We expect two arguments:
  36 #   #1: the complete path to the binary
  37 #   #2: the mtrace data filename
  38 # The usual options are also recognized.
  39
  40 arglist: while (@ARGV) {
  41     if ($ARGV[0] eq "--v" || $ARGV[0] eq "--ve" || $ARGV[0] eq "--ver" ||
  42         $ARGV[0] eq "--vers" || $ARGV[0] eq "--versi" ||
  43         $ARGV[0] eq "--versio" || $ARGV[0] eq "--version") {
  44         print "mtrace (GNU $PACKAGE) $VERSION\n";
  45         print "Copyright (C) 1997 Free Software Foundation, Inc.\n";
  46         print "This is free software; see the source for copying conditions.  There is NO\n";
  47         print "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n";
  48         print "Written by Ulrich Drepper <drepper\@gnu.ai.mit.edu>\n";
  49
  50         exit 0;
  51     } elsif ($ARGV[0] eq "--h" || $ARGV[0] eq "--he" || $ARGV[0] eq "--hel" ||
  52              $ARGV[0] eq "--help") {
  53         &usage;
  54     } elsif ($ARGV[0] =~ /^-/) {
  55         print "$progname: unrecognized option `$ARGV[0]'\n";
  56         print "Try `$progname --help' for more information.\n";
  57         exit 1;
  58     } else {
  59         last arglist;
  60     }
  61 }
  62
  63 if ($#ARGV == 0) {
  64     $binary="";
  65     $data=$ARGV[0];
  66 } elsif ($#ARGV == 1) {
  67     $binary=$ARGV[0];
  68     $data=$ARGV[1];
  69 } else {
  70     die "Wrong number of arguments.";
  71 }
  72
  73 sub location {
  74     my $str = pop(@_);
  75     return $str if ($str eq "");
  76     if ($str =~ /[[](0x[^]]*)]:(.)*/) {
  77         my $addr = $1;
  78         my $fct = $2;
  79         return $cache{$addr} if (exists $cache{$addr});
  80         if ($binary ne "" && open (ADDR, "addr2line -e $binary $addr|")) {
  81             my $line = <ADDR>;
  82             chomp $line;
  83             close (ADDR);
  84             if ($line ne '??:0') {
  85                 $cache{$addr} = $line;
  86                 return $cache{$addr};
  87             }
  88         }
  89         $cache{$addr} = $str = "$fct @ $addr";
  90     } elsif ($str =~ /^[[](0x[^]]*)]$/) {
  91         my $addr = $1;
  92         return $cache{$addr} if (exists $cache{$addr});
  93         if ($binary ne "" && open (ADDR, "addr2line -e $binary $addr|")) {
  94             my $line = <ADDR>;
  95             chomp $line;
  96             close (ADDR);
  97             if ($line ne '??:0') {
  98                 $cache{$addr} = $line;
  99                 return $cache{$addr};
 100             }
 101         }
 102         $cache{$addr} = $str = $addr;
 103     }
 104     return $str;
 105 }
 106
 107 $nr=0;
 108 open(DATA, "<$data") || die "Cannot open mtrace data file";
 109 while (<DATA>) {
 110     my @cols = split (' ');
 111     my $n, $where;
 112     if ($cols[0] eq "@") {
 113         # We have address and/or function name.
 114         $where=$cols[1];
 115         $n=2;
 116     } else {
 117         $where="";
 118         $n=0;
 119     }
 120
 121     $allocaddr=$cols[$n + 1];
 122     $howmuch=hex($cols[$n + 2]);
 123
 124     ++$nr;
 125     SWITCH: {
 126         if ($cols[$n] eq "+") {
 127             if (defined $allocated{$allocaddr}) {
 128                 printf ("+ %#010x Alloc %d duplicate: %s %s\n",
 129                         hex($allocaddr), $nr, $wherewas{$allocaddr}, $where);
 130             } else {
 131                 $allocated{$allocaddr}=$howmuch;
 132                 $wherewas{$allocaddr}=&location($where);
 133             }
 134             last SWITCH;
 135         }
 136         if ($cols[$n] eq "-") {
 137             if (defined $allocated{$allocaddr}) {
 138                 undef $allocated{$allocaddr};
 139                 undef $wherewas{$allocaddr};
 140             } else {
 141                 printf ("- %#010x Free %d was never alloc'd %s\n",
 142                         hex($allocaddr), $nr, &location($where));
 143             }
 144             last SWITCH;
 145         }
 146         if ($cols[$n] eq "<") {
 147             if (defined $allocated{$allocaddr}) {
 148                 undef $allocated{$allocaddr};
 149                 undef $wherewas{$allocaddr};
 150             } else {
 151                 printf ("- %#010x Realloc %d was never alloc'd %s\n",
 152                         hex($allocaddr), $nr, &location($where));
 153             }
 154             last SWITCH;
 155         }
 156         if ($cols[$n] eq ">") {
 157             if (defined $allocated{$allocaddr}) {
 158                 printf ("+ %#010x Realloc %d duplicate: %#010x %s %s\n",
 159                         hex($allocaddr), $nr, $allocated{$allocaddr},
 160                         $wherewas{$allocaddr}, &location($where));
 161             } else {
 162                 $allocated{$allocaddr}=$howmuch;
 163                 $wherewas{$allocaddr}=&location($where);
 164             }
 165             last SWITCH;
 166         }
 167         if ($cols[$n] eq "=") {
 168             # Ignore "= Start".
 169             last SWITCH;
 170         }
 171         if ($cols[$n] eq "!") {
 172             # Ignore failed realloc for now.
 173             last SWITCH;
 174         }
 175     }
 176 }
 177 close (DATA);
 178
 179 # Now print all remaining entries.
 180 @addrs= keys %allocated;
 181 if ($#addrs >= 0) {
 182     print "\nNot freed memory:\n-----------------\n";
 183     print ' ' x (@XXX@ - 7), "Address     Size     Caller\n";
 184     foreach $addr (sort @addrs) {
 185         if (defined $allocated{$addr}) {
 186             printf ("%#0@XXX@x %#8x  at %s\n", hex($addr), $allocated{$addr},
 187                     $wherewas{$addr});
 188         }
 189     }
 190 }
 191
 192 exit 0;