Using Thread::Queue.

Logic:
- Collect list of things to process (into a Thread::Queue)
- Execute threads using Thread::Queue for loop
- Each thread has what it needs to process a Queue item

Using this style structure:
@threads=map {
  threads->create(sub {
  (all things required for each thread to process a Thread::Queue item via a while(defined()) { } structure)
  });
  } 1 .. <numthreads>;
$_->join for @threads

Not using the threads:shared.  (Looked at it a couple times, but not sure that I've encountered a use case for it -or- simply don't have sufficiently complex code to justify?)

Thanks!