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200万左右的循环迭代后高达600 MB）。如果我拿出HTML::TreeBuilder的东西，它就不会增加。我能做些什么来堵塞这个漏洞吗？

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;
}

我让这个脚本运行几分钟，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

HTML :: TreeBuilder中的内存泄漏

1 个答案: