HTML::TreeBuilder 中的内存泄漏

Question

我有一些 Perl 代码：

use HTML::Parse;
use HTML::FormatText;

# ...

my $txtFormatter = HTML::FormatText->new();

while ( ... ) {   # some condition
    my $txt = # get from a file
    my $html_tree = HTML::TreeBuilder->new_from_content($txt);
    $txt = $txtFormatter->format($html_tree);
    $html_tree->delete();
    # write $txt to a file
}

我注意到 perl.exe 进程的大小稳步增加（在大约 200 万次循环迭代后达到 600 MB）。如果我取出 HTML::TreeBuilder 东西，它根本不会增加。我能做些什么来堵住这个漏洞吗？

Answer 1

我无法使用以下脚本复制此内容：

#!/usr/bin/perl

use strict; use warnings;

use File::Slurp;
use HTML::FormatText;
use HTML::TreeBuilder;

my $formatter = HTML::FormatText->new;
my $html = read_file 'test.html';

while ( 1 ) {
    my $tree = HTML::TreeBuilder->new_from_content( $html );
    $formatter->format( $tree );
    $tree->delete;
}

我让该脚本运行几分钟，并且内存使用量（在任务管理器中）保持在 7,200K 和 7,300K 之间。

E:\Home> perl -v

This is perl, v5.10.1 built for MSWin32-x86-multi-thread
(with 2 registered patches, see perl -V for more detail)

Copyright 1987-2009, Larry Wall

Binary build 1006 [291086] provided by ActiveState http://www.ActiveState.com
Built Aug 24 2009 13:48:26

E:\Home> perl -MHTML::TreeBuilder -e "print $HTML::TreeBuilder::VERSION"
3.23

E:\Home> perl -MHTML::FormatText -e "print $HTML::FormatText::VERSION"
2.04