homepage

> That's a problem indeed. Perhaps we need a global "fork lock" shared
> between subprocess and multiprocessing?
I did an atfork patch which included a (recursive) fork lock. See
 http://bugs.python.org/review/6721/show
The patch included changes to multiprocessing and subprocess. (Being able to acquire the lock when doing fd manipulation is quite useful. For instance, the creation of Process.sentinel currently has a race which can mean than another process inherits the write end of the pipe. That would cause Process.join() to wait till both processes terminate.)
Actually, for Finalizers I think it would be easier to just record and check the pid.