Python util.Finalize方法代碼示例

# 需要導入模塊: from multiprocessing import util [as 別名]
# 或者: from multiprocessing.util import Finalize [as 別名]
def __init__(self, address, family, backlog=1):
        self._socket = socket.socket(getattr(socket, family))
        try:
            self._socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
            self._socket.setblocking(True)
            self._socket.bind(address)
            self._socket.listen(backlog)
            self._address = self._socket.getsockname()
        except socket.error:
            self._socket.close()
            raise
        self._family = family
        self._last_accepted = None

        if family == 'AF_UNIX':
            self._unlink = Finalize(
                self, os.unlink, args=(address,), exitpriority=0
                )
        else:
            self._unlink = None 

# 需要導入模塊: from multiprocessing import util [as 別名]
# 或者: from multiprocessing.util import Finalize [as 別名]
def __init__(self, session=None, *args, **kwargs):
        self.session = session or db.session
        self._dirty = set()
        self._finalize = Finalize(self, self.sync, exitpriority=5)
        super(DatabaseScheduler, self).__init__(*args, **kwargs)
        self.max_interval = (kwargs.get('max_interval') or
                             self.app.conf.CELERYBEAT_MAX_LOOP_INTERVAL or
                             DEFAULT_MAX_INTERVAL) 

# 需要導入模塊: from multiprocessing import util [as 別名]
# 或者: from multiprocessing.util import Finalize [as 別名]
def _test_finalize(cls, conn):
        class Foo(object):
            pass

        a = Foo()
        util.Finalize(a, conn.send, args=('a',))
        del a           # triggers callback for a

        b = Foo()
        close_b = util.Finalize(b, conn.send, args=('b',))
        close_b()       # triggers callback for b
        close_b()       # does nothing because callback has already been called
        del b           # does nothing because callback has already been called

        c = Foo()
        util.Finalize(c, conn.send, args=('c',))

        d10 = Foo()
        util.Finalize(d10, conn.send, args=('d10',), exitpriority=1)

        d01 = Foo()
        util.Finalize(d01, conn.send, args=('d01',), exitpriority=0)
        d02 = Foo()
        util.Finalize(d02, conn.send, args=('d02',), exitpriority=0)
        d03 = Foo()
        util.Finalize(d03, conn.send, args=('d03',), exitpriority=0)

        util.Finalize(None, conn.send, args=('e',), exitpriority=-10)

        util.Finalize(None, conn.send, args=('STOP',), exitpriority=-100)

        # call multiprocessing's cleanup function then exit process without
        # garbage collecting locals
        util._exit_function()
        conn.close()
        os._exit(0) 

# 需要導入模塊: from multiprocessing import util [as 別名]
# 或者: from multiprocessing.util import Finalize [as 別名]
def start(self, initializer=None, initargs=()):
        '''
        Spawn a server process for this manager object
        '''
        assert self._state.value == State.INITIAL

        if initializer is not None and not hasattr(initializer, '__call__'):
            raise TypeError('initializer must be a callable')

        # pipe over which we will retrieve address of server
        reader, writer = connection.Pipe(duplex=False)

        # spawn process which runs a server
        self._process = Process(
            target=type(self)._run_server,
            args=(self._registry, self._address, self._authkey,
                  self._serializer, writer, initializer, initargs),
            )
        ident = ':'.join(str(i) for i in self._process._identity)
        self._process.name = type(self).__name__  + '-' + ident
        self._process.start()

        # get address of server
        writer.close()
        self._address = reader.recv()
        reader.close()

        # register a finalizer
        self._state.value = State.STARTED
        self.shutdown = util.Finalize(
            self, type(self)._finalize_manager,
            args=(self._process, self._address, self._authkey,
                  self._state, self._Client),
            exitpriority=0
            ) 

# 需要導入模塊: from multiprocessing import util [as 別名]
# 或者: from multiprocessing.util import Finalize [as 別名]
def _incref(self):
        conn = self._Client(self._token.address, authkey=self._authkey)
        dispatch(conn, None, 'incref', (self._id,))
        util.debug('INCREF %r', self._token.id)

        self._idset.add(self._id)

        state = self._manager and self._manager._state

        self._close = util.Finalize(
            self, BaseProxy._decref,
            args=(self._token, self._authkey, state,
                  self._tls, self._idset, self._Client),
            exitpriority=10
            ) 

# 需要導入模塊: from multiprocessing import util [as 別名]
# 或者: from multiprocessing.util import Finalize [as 別名]
def _start_thread(self):
        debug('Queue._start_thread()')

        # Start thread which transfers data from buffer to pipe
        self._buffer.clear()
        self._thread = threading.Thread(
            target=Queue._feed,
            args=(self._buffer, self._notempty, self._send,
                  self._wlock, self._writer.close),
            name='QueueFeederThread'
            )
        self._thread.daemon = True

        debug('doing self._thread.start()')
        self._thread.start()
        debug('... done self._thread.start()')

        # On process exit we will wait for data to be flushed to pipe.
        if not self._joincancelled:
            self._jointhread = Finalize(
                self._thread, Queue._finalize_join,
                [weakref.ref(self._thread)],
                exitpriority=-5
                )

        # Send sentinel to the thread queue object when garbage collected
        self._close = Finalize(
            self, Queue._finalize_close,
            [self._buffer, self._notempty],
            exitpriority=10
            ) 

# 需要導入模塊: from multiprocessing import util [as 別名]
# 或者: from multiprocessing.util import Finalize [as 別名]
def __init__(self, *args, **kwargs):
        """Initialize the database scheduler."""
        self.app = kwargs['app']
        self.dburi = kwargs.get('dburi') or self.app.conf.get(
            'beat_dburi') or DEFAULT_BEAT_DBURI
        self.engine, self.Session = session_manager.create_session(self.dburi)
        session_manager.prepare_models(self.engine)

        self._dirty = set()
        Scheduler.__init__(self, *args, **kwargs)
        self._finalize = Finalize(self, self.sync, exitpriority=5)
        self.max_interval = (kwargs.get('max_interval') or
                             self.app.conf.beat_max_loop_interval or
                             DEFAULT_MAX_INTERVAL) 

# 需要導入模塊: from multiprocessing import util [as 別名]
# 或者: from multiprocessing.util import Finalize [as 別名]
def init(db_class, db_opts):
    global PROCESS_TOK, PROCESS_DB
    # PROCESS_TOK = tokenizer_class()
    # Finalize(PROCESS_TOK, PROCESS_TOK.shutdown, exitpriority=100)
    PROCESS_DB = db_class(**db_opts)
    Finalize(PROCESS_DB, PROCESS_DB.close, exitpriority=100) 

# 需要導入模塊: from multiprocessing import util [as 別名]
# 或者: from multiprocessing.util import Finalize [as 別名]
def _start_thread(self):
        util.debug('Queue._start_thread()')

        # Start thread which transfers data from buffer to pipe
        self._buffer.clear()
        self._thread = threading.Thread(
            target=Queue._feed,
            args=(self._buffer, self._notempty, self._send_bytes,
                  self._wlock, self._writer.close, self._reducers,
                  self._ignore_epipe, self._on_queue_feeder_error, self._sem),
            name='QueueFeederThread'
        )
        self._thread.daemon = True

        util.debug('doing self._thread.start()')
        self._thread.start()
        util.debug('... done self._thread.start()')

        # On process exit we will wait for data to be flushed to pipe.
        #
        # However, if this process created the queue then all
        # processes which use the queue will be descendants of this
        # process.  Therefore waiting for the queue to be flushed
        # is pointless once all the child processes have been joined.
        created_by_this_process = (self._opid == os.getpid())
        if not self._joincancelled and not created_by_this_process:
            self._jointhread = util.Finalize(
                self._thread, Queue._finalize_join,
                [weakref.ref(self._thread)],
                exitpriority=-5
            )

        # Send sentinel to the thread queue object when garbage collected
        self._close = util.Finalize(
            self, Queue._finalize_close,
            [self._buffer, self._notempty],
            exitpriority=10
        )

    # Overload the _feed methods to use our custom pickling strategy. 

# 需要導入模塊: from multiprocessing import util [as 別名]
# 或者: from multiprocessing.util import Finalize [as 別名]
def __init__(self, kind, value, maxvalue):
        # unlink_now is only used on win32 or when we are using fork.
        unlink_now = False
        for i in range(100):
            try:
                self._semlock = _SemLock(
                    kind, value, maxvalue, SemLock._make_name(),
                    unlink_now)
            except FileExistsError:  # pragma: no cover
                pass
            else:
                break
        else:  # pragma: no cover
            raise FileExistsError('cannot find name for semaphore')

        util.debug('created semlock with handle %s and name "%s"'
                   % (self._semlock.handle, self._semlock.name))

        self._make_methods()

        def _after_fork(obj):
            obj._semlock._after_fork()

        util.register_after_fork(self, _after_fork)

        # When the object is garbage collected or the
        # process shuts down we unlink the semaphore name
        resource_tracker.register(self._semlock.name, "semlock")
        util.Finalize(self, SemLock._cleanup, (self._semlock.name,),
                      exitpriority=0)