tools/rb/filter-log.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 make-tree.pl
  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 #   Authors of make-tree.pl.
  25 #   L. David Baron <dbaron@dbaron.org>, Mozilla Corporation
  26 #     (made filter-log-for.pl from make-tree.pl)
  27 #
  28 # Alternatively, the contents of this file may be used under the terms of
  29 # either the GNU General Public License Version 2 or later (the "GPL"), or
  30 # the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  31 # in which case the provisions of the GPL or the LGPL are applicable instead
  32 # of those above. If you wish to allow use of your version of this file only
  33 # under the terms of either the GPL or the LGPL, and not to allow others to
  34 # use your version of this file under the terms of the MPL, indicate your
  35 # decision by deleting the provisions above and replace them with the notice
  36 # and other provisions required by the GPL or the LGPL. If you do not delete
  37 # the provisions above, a recipient may use your version of this file under
  38 # the terms of any one of the MPL, the GPL or the LGPL.
  39 #
  40 # ***** END LICENSE BLOCK *****
  41
  42 # Filter a refcount log to show only the entries for a single object.
  43 # Useful when manually examining refcount logs containing multiple
  44 # objects.
  45
  46 use 5.004;
  47 use strict;
  48 use Getopt::Long;
  49
  50 GetOptions("object=s");
  51
  52 $::opt_object ||
  53      die qq{
  54 usage: filter-log-for.pl < logfile
  55   --object <obj>         The address of the object to examine (required)
  56 };
  57
  58 warn "object $::opt_object\n";
  59
  60 LINE: while (<>) {
  61     next LINE if (! /^</);
  62     my $line = $_;
  63     my @fields = split(/ /, $_);
  64
  65     my $class = shift(@fields);
  66     my $obj   = shift(@fields);
  67     next LINE unless ($obj eq $::opt_object);
  68     my $sno   = shift(@fields);
  69     my $op  = shift(@fields);
  70     my $cnt = shift(@fields);
  71
  72     print $line;
  73
  74     # The lines in the stack trace
  75     CALLSITE: while (<>) {
  76         print;
  77         last CALLSITE if (/^$/);
  78     }
  79 }