perl服务器中的内存泄漏

Question

我正在尝试使用perl编写多线程服务器(Windows x64).当试图从另一台计算机连接到它时,我发现内存和句柄使用率一直在上升,即使我一次只维护一个连接.经过数千次试验后,它耗尽了几乎所有的系统内存.我无法弄清楚原因.

这是服务器端:

use IO::Socket::INET;
use threads;

sub session_thread
{
    my $client_socket=$_[0];

    my $client_address = $client_socket->peerhost();
    my $client_port = $client_socket->peerport();
    print "connection from $client_address:$client_port\n";

    my $data = "";
    $client_socket->recv($data, 1024);
    print "$client_address:$client_port says: $data";

    $data = "ok";
    $client_socket->send($data);

    shutdown($client_socket, 1);
    $client_socket->close();
    threads->exit();
}

$| = 1;

my $socket = new IO::Socket::INET (
    LocalHost => '0.0.0.0',
    LocalPort => '7777',
    Proto => 'tcp',
    Listen => 5,
    ReuseAddr => 1
);
die "cannot create socket $!\n" unless $socket;
print "server waiting for client connection on port 7777\n";

while(1)
{
    my $client_socket = $socket->accept();
    threads->create('session_thread',$client_socket);
}

$socket->close();

谢谢.

Answer 1

你要么必须等待线程完成加入它,要么告诉Perl你不关心线程的返回值,并且Perl本身应该在线程退出后清理数据.后者似乎与您的用例相匹配,并通过分离完成.

另外请注意,使用exit是没有必要在你的例子.您可以直接从线程的子例程返回.exit用于从程序中更深的嵌套级别结束线程.