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99 lines
3.2 KiB
Perl
Executable File
99 lines
3.2 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#
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# ***** BEGIN LICENSE BLOCK *****
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# Version: MPL 1.1/GPL 2.0/LGPL 2.1
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#
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# The contents of this file are subject to the Mozilla Public License Version
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# 1.1 (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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# http://www.mozilla.org/MPL/
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#
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# Software distributed under the License is distributed on an "AS IS" basis,
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# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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# for the specific language governing rights and limitations under the
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# License.
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#
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# The Original Code is histogram.pl, released
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# Nov 27, 2000.
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#
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# The Initial Developer of the Original Code is
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# Netscape Communications Corporation.
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# Portions created by the Initial Developer are Copyright (C) 2000
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# the Initial Developer. All Rights Reserved.
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#
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# Contributor(s):
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# Chris Waterson <waterson@netscape.com>
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#
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# Alternatively, the contents of this file may be used under the terms of
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# either the GNU General Public License Version 2 or later (the "GPL"), or
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# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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# in which case the provisions of the GPL or the LGPL are applicable instead
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# of those above. If you wish to allow use of your version of this file only
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# under the terms of either the GPL or the LGPL, and not to allow others to
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# use your version of this file under the terms of the MPL, indicate your
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# decision by deleting the provisions above and replace them with the notice
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# and other provisions required by the GPL or the LGPL. If you do not delete
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# the provisions above, a recipient may use your version of this file under
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# the terms of any one of the MPL, the GPL or the LGPL.
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#
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# ***** END LICENSE BLOCK *****
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# This program produces a ``class histogram'' of the live objects, one
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# line per class, with the total number of objects allocated, and
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# total number of bytes attributed to those objects.
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use 5.004;
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use strict;
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use Getopt::Long;
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# So we can find TraceMalloc.pm
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use FindBin;
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use lib "$FindBin::Bin";
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use TraceMalloc;
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# Collect program options
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$::opt_help = 0;
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$::opt_types = "${FindBin::Bin}/types.dat";
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GetOptions("help", "types=s");
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if ($::opt_help) {
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die "usage: histogram.pl [options] <dumpfile>
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--help Display this message
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--types=<file> Read type heuristics from <file>";
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}
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# Initialize type inference juju from the type file specified by
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# ``--types''.
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if ($::opt_types) {
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TraceMalloc::init_type_inference($::opt_types);
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}
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# Read the dump file, collecting count and size information for each
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# object that's detected.
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# This'll hold a record for each class that we detect
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$::Classes = { };
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sub collect_objects($) {
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my ($object) = @_;
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my $type = $object->{'type'};
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my $entry = $::Classes{$type};
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if (! $entry) {
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$entry = $::Classes{$type} = { '#count#' => 0, '#bytes#' => 0 };
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}
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$entry->{'#count#'} += 1;
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$entry->{'#bytes#'} += $object->{'size'};
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}
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TraceMalloc::read(\&collect_objects);
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# Print one line per class, sorted with the classes that accumulated
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# the most bytes first.
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foreach my $class (sort { $::Classes{$b}->{'#bytes#'} <=> $::Classes{$a}->{'#bytes#'} } keys %::Classes) {
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print "$class $::Classes{$class}->{'#count#'} $::Classes{$class}->{'#bytes#'}\n";
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}
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