code: def _raise_timeout_warning():
      warnings.warn(
          "Stalled dataset is detected. "
          "See the documentation of MultiprocessIterator for common causes and "
          "workarounds:\n"
          "https://docs.chainer.org/en/stable/reference/generated/"
          "chainer.iterators.MultiprocessIterator.html",
          MultiprocessIterator.TimeoutWarning,
      )
  
imports: from __future__ import division
  import datetime
  import multiprocessing
  from multiprocessing import sharedctypes
  import signal
  import sys
  import threading
  import warnings
  import numpy
  import six
  from chainer.dataset import iterator
  from chainer.iterators import _statemachine
  from chainer.iterators.order_samplers import ShuffleOrderSampler
label_desc: Use image node_id 1 for calling a global function with example usage: _raise_timeout_warning() without return types