Function _shutdown

Lib/threading.py:1559–1583

Wait until the Python thread state of all non-daemon threads get deleted.

()

_main_thread = _MainThread()

def _shutdown():
    """
    Wait until the Python thread state of all non-daemon threads get deleted.
    """
    # Obscure: other threads may be waiting to join _main_thread.  That's
    # dubious, but some code does it. We can't wait for it to be marked as done
    # normally - that won't happen until the interpreter is nearly dead. So
    # mark it done here.
    if _main_thread._os_thread_handle.is_done() and _is_main_interpreter():
        # _shutdown() was already called
        return

    global _SHUTTING_DOWN
    _SHUTTING_DOWN = True

    # Call registered threading atexit functions before threads are joined.
    # Order is reversed, similar to atexit.
    for atexit_call in reversed(_threading_atexits):
        atexit_call()

    if _is_main_interpreter():
        _main_thread._os_thread_handle._set_done()

    # Wait for all non-daemon threads to exit.
    _thread_shutdown()


def main_thread():