_sync.py 文件源码

def statistics(self):
        """Returns an object containing debugging information.

        Currently the following fields are defined:

        * ``qsize``: The number of items currently in the queue.
        * ``capacity``: The maximum number of items the queue can hold.
        * ``tasks_waiting_put``: The number of tasks blocked on this queue's
          :meth:`put` method.
        * ``tasks_waiting_get``: The number of tasks blocked on this queue's
          :meth:`get` method.

        """
        return _QueueStats(
            qsize=len(self._data),
            capacity=self.capacity,
            tasks_waiting_put=self._put_semaphore.statistics().tasks_waiting,
            tasks_waiting_get=self._get_semaphore.statistics().tasks_waiting,
            tasks_waiting_join=self._join_lot.statistics().tasks_waiting
        )