Seeing as noone else has responded to this, let me simply say that I tried 
to develop an application using Perl threads, and in my opinion, Perl 
threads are seriously broken. We had to re-write the application without 
threads.

The main problem was that threads would die, but I found no reliable way of 
detecting this. Also, some advice I found on the web said that you 
shouldn't create too many threads - they weren't designed for that. 
However, there was no mention of what the limit might be, how to determine 
the limit, or how to discover whether thread creation succeeded or failed. 
All this means that if you want to create a couple of threads, it should 
(?) work, but beyond that, who knows?

At 04:07 PM 7/29/2004, Nadjaf Kuliev wrote:
> When i tested my IIS vulnerability checker, it works perfecly, but when I
> added multitasking support, it starts good, bit by bit cpu noise increases
> then perl crases with unknown error. I didnt use fork(). I used builtin
> Threads support with async{}. I dont want to make the code public before
> first release so ill tell some details, if it wont help i will email some of
> you who really wants to help the code. So here it is, the main scripts gets
> all the vulnerability check, ie vulnerable file checks from a file and tries
> them one by one on particular IIS webserver. Ony by one is really slow, so I
> implemented threads. As you may know if it is checking the webserver it
> surely will send HTTP requests for each vulnerable file. I use IO::Socket
> only, not HTTP support modules.
> 
> As far as i can guess, the reason for crash is most probably not in the code
>   but in the perl, perl threads support particularly and how interacts with
> my OS - windows 98.
> 
> Any help is greatly appreciated. Thanks in advance.
> 
> Respect, OkIDaN.
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