When :func:`os.fork` is called from a foreign thread (aka _DummyThread),
the type of the thread in a child process is changed to _MainThread.
Also changed its name and daemonic status, it can be now joined.
When :func:`os.fork` is called from a foreign thread (aka _DummyThread),
the type of the thread in a child process is changed to _MainThread.
Also changed its name and daemonic status, it can be now joined.