Hi there I have been searching for some time now and I cannot find any conclusive answer to the question if this module is thread safe or not.

I see question on perlmonks dating back to 2003 where people are asking the same, and a 2002 article on perl.com saying not yet but we are working on it. But I see nothing in the documentation nor in the FAQ about this subject. I do see a reference to printing thread specific data so I assume that it is now thread safe mut still I do not see any yes or no anwser.

In the source I see no instance of file locking which leads me to believe that the module is not thread safe but maybe another way is used that I do not even know exists.