code: def _feed(
      buffer,
      notempty,
      send_bytes,
      writelock,
      close,
      reducers,
      ignore_epipe,
      onerror,
      queue_sem,
  ):
      util.debug("starting thread to feed data to pipe")
      nacquire = notempty.acquire
      nrelease = notempty.release
      nwait = notempty.wait
      bpopleft = buffer.popleft
      sentinel = _sentinel
      if sys.platform != "win32":
          wacquire = writelock.acquire
          wrelease = writelock.release
      else:
          wacquire = None
  
      while True:
          try:
              nacquire()
              try:
                  if not buffer:
                      nwait()
              finally:
                  nrelease()
              try:
                  while True:
                      obj = bpopleft()
                      if obj is sentinel:
                          util.debug(
                              "feeder thread got sentinel -- exiting"
                          )
                          close()
                          return
  
                      # serialize the data before acquiring the lock
                      obj_ = dumps(obj, reducers=reducers)
                      if wacquire is None:
                          send_bytes(obj_)
                      else:
                          wacquire()
                          try:
                              send_bytes(obj_)
                          finally:
                              wrelease()
                      # Remove references early to avoid leaking memory
                      del obj, obj_
              except IndexError:
                  pass
          except BaseException as e:
              if ignore_epipe and getattr(e, "errno", 0) == errno.EPIPE:
                  return
              # Since this runs in a daemon thread the resources it uses
              # may be become unusable while the process is cleaning up.
              # We ignore errors which happen after the process has
              # started to cleanup.
              if util.is_exiting():
                  util.info(f"error in queue thread: {e}")
                  return
              else:
                  queue_sem.release()
                  onerror(e, obj)
  
imports: import os
  import sys
  import errno
  import weakref
  import threading
  from multiprocessing import util
  from multiprocessing.queues import Full, Queue, SimpleQueue, _sentinel
  from multiprocessing.context import assert_spawning
  from .reduction import dumps
label_desc: Use image node_id 5 for calling the Queue obj's underlying member method code with example usage: obj._feed(buffer, notempty, send_bytes, writelock, close, reducers, ignore_epipe, onerror, queue_sem) without return types