Method _exit

Lib/threading.py:778–783

(self)

    # If we are the last thread to exit the barrier, signal any threads
    # waiting for the barrier to drain.
    def _exit(self):
        if self._count == 0:
            if self._state in (-1, 1):
                #resetting or draining
                self._state = 0
                self._cond.notify_all()

    def reset(self):
        """Reset the barrier to the initial state.