create new threads inside a thread

kzle has asked for the wisdom of the Perl Monks concerning the following question:

Hi Monks,

Recently I was in the middle of creating a script using threads, some problem come up, like the following:

$master_thread = threads->create( \&sub1, $para );
....
....

sub sub1{
    my $tmp = shift;
        
        ## not work as expected, I don't know why?
    my $sub_thread = threads->create( \&sub2, $tmp );
        ....
        ....
}

sub sub2{
    my $value = shift;
    
    print $value;
}
[download]

I read many entries about Perl threads, but not seeing any about create new thread inside the subroutine of another thread. Here's my question: Is there any possibility to create new thread within the referred subroutine of another thread?

Thanks

Yun

Comment on create new threads inside a thread Download Code

Replies are listed 'Best First'.
Re: create new threads inside a thread by ikegami (Patriarch) on Mar 26, 2010 at 06:36 UTC
You're always inside a thread, so yes, you can create threads while executing in a thread. You provided neither a description of your problem nor simple means to recreate it. Could it be the one reported in http://rt.perl.org/rt3/Public/Bug/Display.html?id=70602?	[reply]
Re^2: create new threads inside a thread by kzle (Novice) on Mar 26, 2010 at 07:09 UTC
Yes, ikegami, I think its the same problem, any idea how to avoid this? thanks, Yun	[reply]
Re^3: create new threads inside a thread by Anonymous Monk on Mar 26, 2010 at 07:16 UTC
The bug report contains two workarounds. 1) to add `@_=()` [download] and 2) to upgrade to bleadperl later than e81cd4d2c506bfc28460d324d94b81010f5ee455 (5.12)	[reply] [d/l]