tools/rb/find-leakers.pl

   1 #!/usr/bin/perl -w
   2 #
   3 # ***** BEGIN LICENSE BLOCK *****
   4 # Version: MPL 1.1/GPL 2.0/LGPL 2.1
   5 #
   6 # The contents of this file are subject to the Mozilla Public License Version
   7 # 1.1 (the "License"); you may not use this file except in compliance with
   8 # the License. You may obtain a copy of the License at
   9 # http://www.mozilla.org/MPL/
  10 #
  11 # Software distributed under the License is distributed on an "AS IS" basis,
  12 # WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  13 # for the specific language governing rights and limitations under the
  14 # License.
  15 #
  16 # The Original Code is mozilla.org Code.
  17 #
  18 # The Initial Developer of the Original Code is
  19 # Netscape Communications Corporation.
  20 # Portions created by the Initial Developer are Copyright (C) 1998
  21 # the Initial Developer. All Rights Reserved.
  22 #
  23 # Contributor(s):
  24 #
  25 # Alternatively, the contents of this file may be used under the terms of
  26 # either the GNU General Public License Version 2 or later (the "GPL"), or
  27 # the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  28 # in which case the provisions of the GPL or the LGPL are applicable instead
  29 # of those above. If you wish to allow use of your version of this file only
  30 # under the terms of either the GPL or the LGPL, and not to allow others to
  31 # use your version of this file under the terms of the MPL, indicate your
  32 # decision by deleting the provisions above and replace them with the notice
  33 # and other provisions required by the GPL or the LGPL. If you do not delete
  34 # the provisions above, a recipient may use your version of this file under
  35 # the terms of any one of the MPL, the GPL or the LGPL.
  36 #
  37 # ***** END LICENSE BLOCK *****
  38
  39 use strict;
  40
  41 my %allocs;
  42 my %classes;
  43 my %counter;
  44
  45 LINE: while (<>) {
  46     next LINE if (! /^</);
  47
  48     my @fields = split(/ /, $_);
  49     my $class = shift(@fields);
  50     my $obj   = shift(@fields);
  51     my $sno   = shift(@fields);
  52     my $op    = shift(@fields);
  53     my $cnt   = shift(@fields);
  54
  55     if ($op eq 'AddRef' && $cnt == 1) {
  56         # Example: <nsStringBuffer> 0x01AFD3B8 1 AddRef 1
  57
  58         $allocs{$obj} = ++$counter{$class}; # the order of allocation
  59         $classes{$obj} = $class;
  60     }
  61     elsif ($op eq 'Release' && $cnt == 0) {
  62         # Example: <nsStringBuffer> 0x01AFD3B8 1 Release 0
  63
  64         delete($allocs{$obj});
  65         delete($classes{$obj});
  66     }
  67 }
  68
  69
  70 sub sort_by_value {
  71     my %x = @_;
  72     sub _by_value($) { my %x = @_; $x{$a} cmp $x{$b}; }
  73     sort _by_value keys(%x);
  74 }
  75
  76
  77 foreach my $key (&sort_by_value(%allocs)) {
  78     # Example: 0x03F1D818 (2078) @ <nsStringBuffer>
  79     print "$key (", $allocs{$key}, ") @ ", $classes{$key}, "\n";
  80 }