code: def setup_function():
      """Prepare for the check if all started processes are no longer children of current process"""
      global pool_processes
      global pool_threads
      global pools
      pool_processes = []
      pool_threads = []
      pools = []
  
file_path: DALI/dali/test/python/test_pool_utils.py
imports: import os
  import psutil
  import weakref
label_desc: Use image node_id 2 for calling a global function with example usage: setup_function() without return types