Could you add support for thread?

[M-M-M-M]

While using multiple thread NYTProf is mainly reporting as "threads::join (xsub)"

The documentation stands:

Threads and Multiplicity

Devel::NYTProf is not currently thread safe or multiplicity safe. If you'd be interested in helping to fix that then please get in touch with us. Meanwhile, profiling is disabled when a thread is created, and NYTProf tries to ignore any activity from perl interpreters other than the first one that loaded it.

What could be done to fix that issue?