How to use the multiprocess.util function in multiprocess

def __init__(self, token, serializer, manager=None,
                 authkey=None, exposed=None, incref=True):
        BaseProxy._mutex.acquire()
        try:
            tls_idset = BaseProxy._address_to_local.get(token.address, None)
            if tls_idset is None:
                tls_idset = util.ForkAwareLocal(), ProcessLocalSet()
                BaseProxy._address_to_local[token.address] = tls_idset
        finally:
            BaseProxy._mutex.release()

        # self._tls is used to record the connection used by this
        # thread to communicate with the manager at token.address
        self._tls = tls_idset[0]

        # self._idset is used to record the identities of all shared
        # objects for which the current process owns references and
        # which are in the manager at token.address
        self._idset = tls_idset[1]

        self._token = token
        self._id = self._token.id
        self._manager = manager

msg = ('#TRACEBACK', format_exc())
        else:
            try:
                result = func(c, *args, **kwds)
            except Exception:
                msg = ('#TRACEBACK', format_exc())
            else:
                msg = ('#RETURN', result)
        try:
            c.send(msg)
        except Exception as e:
            try:
                c.send(('#TRACEBACK', format_exc()))
            except Exception:
                pass
            util.info('Failure to send message: %r', msg)
            util.info(' ... request was %r', request)
            util.info(' ... exception was %r', e)

        c.close()

def prepare(data):
    '''
    Try to get current process ready to unpickle process object
    '''
    old_main_modules.append(sys.modules['__main__'])

    if 'name' in data:
        process.current_process().name = data['name']

    if 'authkey' in data:
        process.current_process()._authkey = data['authkey']

    if 'log_to_stderr' in data and data['log_to_stderr']:
        util.log_to_stderr()

    if 'log_level' in data:
        util.get_logger().setLevel(data['log_level'])

    if 'sys_path' in data:
        sys.path = data['sys_path']

    if 'sys_argv' in data:
        sys.argv = data['sys_argv']

    if 'dir' in data:
        os.chdir(data['dir'])

    if 'orig_dir' in data:
        process.ORIGINAL_DIR = data['orig_dir']

class ProcessLocalSet(set):
    def __init__(self):
        util.register_after_fork(self, lambda obj: obj.clear())
    def __reduce__(self):
        return type(self), ()

#
# Definition of BaseProxy
#

class BaseProxy(object):
    '''
    A base for proxies of shared objects
    '''
    _address_to_local = {}
    _mutex = util.ForkAwareThreadLock()

    def __init__(self, token, serializer, manager=None,
                 authkey=None, exposed=None, incref=True):
        BaseProxy._mutex.acquire()
        try:
            tls_idset = BaseProxy._address_to_local.get(token.address, None)
            if tls_idset is None:
                tls_idset = util.ForkAwareLocal(), ProcessLocalSet()
                BaseProxy._address_to_local[token.address] = tls_idset
        finally:
            BaseProxy._mutex.release()

        # self._tls is used to record the connection used by this
        # thread to communicate with the manager at token.address
        self._tls = tls_idset[0]

class ProcessLocalSet(set):
    def __init__(self):
        util.register_after_fork(self, lambda obj: obj.clear())
    def __reduce__(self):
        return type(self), ()

#
# Definition of BaseProxy
#

class BaseProxy(object):
    '''
    A base for proxies of shared objects
    '''
    _address_to_local = {}
    _mutex = util.ForkAwareThreadLock()

    def __init__(self, token, serializer, manager=None,
                 authkey=None, exposed=None, incref=True):
        BaseProxy._mutex.acquire()
        try:
            tls_idset = BaseProxy._address_to_local.get(token.address, None)
            if tls_idset is None:
                tls_idset = util.ForkAwareLocal(), ProcessLocalSet()
                BaseProxy._address_to_local[token.address] = tls_idset
        finally:
            BaseProxy._mutex.release()

        # self._tls is used to record the connection used by this
        # thread to communicate with the manager at token.address
        self._tls = tls_idset[0]

def __init__(self, token, serializer, manager=None,
                 authkey=None, exposed=None, incref=True):
        BaseProxy._mutex.acquire()
        try:
            tls_idset = BaseProxy._address_to_local.get(token.address, None)
            if tls_idset is None:
                tls_idset = util.ForkAwareLocal(), ProcessLocalSet()
                BaseProxy._address_to_local[token.address] = tls_idset
        finally:
            BaseProxy._mutex.release()

        # self._tls is used to record the connection used by this
        # thread to communicate with the manager at token.address
        self._tls = tls_idset[0]

        # self._idset is used to record the identities of all shared
        # objects for which the current process owns references and
        # which are in the manager at token.address
        self._idset = tls_idset[1]

        self._token = token
        self._id = self._token.id
        self._manager = manager

def __init__(self, token, serializer, manager=None,
                 authkey=None, exposed=None, incref=True):
        BaseProxy._mutex.acquire()
        try:
            tls_idset = BaseProxy._address_to_local.get(token.address, None)
            if tls_idset is None:
                tls_idset = util.ForkAwareLocal(), ProcessLocalSet()
                BaseProxy._address_to_local[token.address] = tls_idset
        finally:
            BaseProxy._mutex.release()

        # self._tls is used to record the connection used by this
        # thread to communicate with the manager at token.address
        self._tls = tls_idset[0]

        # self._idset is used to record the identities of all shared
        # objects for which the current process owns references and
        # which are in the manager at token.address
        self._idset = tls_idset[1]

        self._token = token
        self._id = self._token.id
        self._manager = manager

msg = ('#TRACEBACK', format_exc())
        else:
            try:
                result = func(c, *args, **kwds)
            except Exception:
                msg = ('#TRACEBACK', format_exc())
            else:
                msg = ('#RETURN', result)
        try:
            c.send(msg)
        except Exception, e:
            try:
                c.send(('#TRACEBACK', format_exc()))
            except Exception:
                pass
            util.info('Failure to send message: %r', msg)
            util.info(' ... request was %r', request)
            util.info(' ... exception was %r', e)

        c.close()

class ProcessLocalSet(set):
    def __init__(self):
        util.register_after_fork(self, lambda obj: obj.clear())
    def __reduce__(self):
        return type(self), ()

#
# Definition of BaseProxy
#

class BaseProxy(object):
    '''
    A base for proxies of shared objects
    '''
    _address_to_local = {}
    _mutex = util.ForkAwareThreadLock()

    def __init__(self, token, serializer, manager=None,
                 authkey=None, exposed=None, incref=True):
        BaseProxy._mutex.acquire()
        try:
            tls_idset = BaseProxy._address_to_local.get(token.address, None)
            if tls_idset is None:
                tls_idset = util.ForkAwareLocal(), ProcessLocalSet()
                BaseProxy._address_to_local[token.address] = tls_idset
        finally:
            BaseProxy._mutex.release()

        # self._tls is used to record the connection used by this
        # thread to communicate with the manager at token.address
        self._tls = tls_idset[0]