I have a script that uses threads and threads::shared. It works fine on fedora14 and some other distros, though I forget the different ones it worked correctly on.

In any event, I'm now on a centos 5.3 box with perl V5.8.8 and when I execute the following to join the threads befor exiting:

foreach my $thread (threads->list(threads::joinable))
{ $thread->join(); }
[download]

I get an error:

Usage: threads::list(classname) at ./colmux.pl line 295.

I've observered a couple of things:

• on the centos system if I just comment out this look my program exists cleanly and so it doesn't even look like I need it!
• on the fedora system if I comment out that look I get the following:
  Perl exited with active threads: 0 running and unjoined 6 finished and unjoined 0 running and detached which was why I included it in the first place.

so my question is, is this a version thing? Should I just skip that loop if perl is less than a particular version number and if so what? or is there some simply test I can run to see if this is supported by my persion of perl, which might be the cleanest.

-mark