code: def monkeypatch_os_fork_functions():
      
      builtin_function = type(''.join)
      if hasattr(os, 'fork') and isinstance(os.fork, builtin_function):
          global _orig_os_fork
          _orig_os_fork = os.fork
          os.fork = os_fork_wrapper
      if hasattr(os, 'forkpty') and isinstance(os.forkpty, builtin_function):
          global _orig_os_forkpty
          _orig_os_forkpty = os.forkpty
          os.forkpty = os_forkpty_wrapper
docs: Replace os.fork* with wrappers that use ForkSafeLock to acquire
      all locks before forking and release them afterwards.