Irit Katriel <iritkatr...@yahoo.com> added the comment:
The source code for the Process class is here: https://github.com/python/cpython/blob/master/Lib/multiprocessing/process.py You can see that join and start both modify the global, non thread safe _children set. I'm guessing this is where you're seeing interference between threads. I'm not sure a lock on start is enough - I think you need to get the lock for the join_process(job, deadline) call as well, because join can modify _children too. (Or, alternatively, manage all processes from a single thread.) ---------- nosy: +iritkatriel _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue40860> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com