class_docstr: A thread-safe queue implementation for multiple producers and consumers.
  
  Provide `release()` to exit producer threads cooperatively for resource release.
docstr: Return the size of the queue.
docstr_tok: ["Return","the","size","of","the","queue","."]
code: def qsize(self):
      """Return the size of the queue."""
      with self._mutex:
          return len(self._queue)
  
imports: import importlib
  import logging
  import os
  import pathlib
  import random
  import sys
  import threading
  import time
  import urllib.parse
  from collections import deque
  from types import ModuleType
  from typing import TYPE_CHECKING, Any, Callable, Dict, Iterable, Iterator, List, Optional, Tuple, TypeVar, Union
  import numpy
  import ray
  from ray._private.utils import _get_pyarrow_version
  from ray.data._internal.arrow_ops.transform_pyarrow import unify_schemas
  from ray.data.context import WARN_PREFIX, DataContext
label_desc: Use image node_id 5 for calling the Queue obj's underlying member method code with example usage: obj.qsize() and returns: len