code: def attack_from_queue(
      attack,
      attack_args,
      num_gpus,
      first_to_start,
      lock,
      in_queue,
      out_queue,
  ):
      assert isinstance(
          attack, Attack
      ), f"`attack` must be of type `Attack`, but got type `{type(attack)}`."
  
      gpu_id = (
          torch.multiprocessing.current_process()._identity[0] - 1
      ) % num_gpus
      set_env_variables(gpu_id)
      textattack.shared.utils.set_seed(attack_args.random_seed)
      if torch.multiprocessing.current_process()._identity[0] > 1:
          logging.disable()
  
      attack.cuda_()
  
      # Simple non-synchronized check to see if it's the first process to reach this point.
      # This let us avoid waiting for lock.
      if bool(first_to_start.value):
          # If it's first process to reach this step, we first try to acquire the lock to update the value.
          with lock:
              # Because another process could have changed `first_to_start=False` while we wait, we check again.
              if bool(first_to_start.value):
                  first_to_start.value = 0
                  if not attack_args.silent:
                      print(attack, "\n")
  
      while True:
          try:
              i, example, ground_truth_output = in_queue.get(timeout=5)
              if (
                  i == "END"
                  and example == "END"
                  and ground_truth_output == "END"
              ):
                  # End process when sentinel value is received
                  break
              else:
                  result = attack.attack(example, ground_truth_output)
                  out_queue.put((i, result))
          except Exception as e:
              if isinstance(e, queue.Empty):
                  continue
              else:
                  out_queue.put((i, (e, traceback.format_exc())))
  
imports: import collections
  import logging
  import multiprocessing
  import os
  import queue
  import random
  import traceback
  import torch
  import tqdm
  import textattack
  from textattack.attack_results import FailedAttackResult, MaximizedAttackResult, SkippedAttackResult, SuccessfulAttackResult
  from textattack.shared.utils import logger
  from .attack import Attack
  from .attack_args import AttackArgs
label_desc: Use image node_id 3 for calling a global function with example usage: attack_from_queue(attack, attack_args, num_gpus, first_to_start, lock, in_queue, out_queue) without return types