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Python select.select方法代码示例

本文整理汇总了Python中gevent.select.select方法的典型用法代码示例。如果您正苦于以下问题:Python select.select方法的具体用法?Python select.select怎么用?Python select.select使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在gevent.select的用法示例。


在下文中一共展示了select.select方法的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。

示例1: run

# 需要导入模块: from gevent import select [as 别名]
# 或者: from gevent.select import select [as 别名]
def run(self):
        websocket_fd = uwsgi.connection_fd()
        channel_fd = self.channel.connection._sock.fileno()

        fds = [websocket_fd, channel_fd]

        try:
            while True:
                readable, _, _ = select.select(fds, [], [], TIMEOUT)
                if not readable:
                    self.recv()
                    continue

                self.recv()
                data = self.channel.get_message(ignore_subscribe_messages=True)
                if data:
                    self.on_channel_data(data)

        except self.WebSocketError:
            return HttpResponse('ws ok')
        finally:
            self.channel.unsubscribe()
            self.on_connection_lost() 
开发者ID:suemi994,项目名称:DroidWatcher,代码行数:25,代码来源:view.py

示例2: can_read

# 需要导入模块: from gevent import select [as 别名]
# 或者: from gevent.select import select [as 别名]
def can_read(self, timeout=0.0):
        """
        Checks if there is data that can be read from the
        socket (if open). Returns True if there is data and
        False if not.

        It returns None if something very bad happens such as
        a dead connection (bad file descriptor), etc
        """

        # rs = Read Sockets
        # ws = Write Sockets
        # es = Error Sockets
        if self.socket is not None:
            try:
                rs, _, es = select([self.socket], [], [], timeout)
            except (SelectError, socket.error), e:
                if e[0] == errno.EBADF:
                    # Bad File Descriptor... hmm
                    self.close()
                    return None

            if len(es) > 0:
                # Bad File Descriptor
                self.close()
                return None

            return len(rs) > 0

        # no socket or no connection
        return None 
开发者ID:caronc,项目名称:newsreap,代码行数:33,代码来源:SocketBase.py

示例3: can_write

# 需要导入模块: from gevent import select [as 别名]
# 或者: from gevent.select import select [as 别名]
def can_write(self, timeout=0):
        """
        Checks if there is data that can be written to the
        socket (if open). Returns True if writing is possible and
        False if not.

        It returns None if something very bad happens such as
        a dead connection (bad file descriptor), etc
        """

        # rs = Read Sockets
        # ws = Write Sockets
        # es = Error Sockets
        if self.socket is not None:
            try:
                _, ws, es = select([], [self.socket], [], timeout)
            except (SelectError, socket.error), e:
                if e[0] == errno.EBADF:
                    # Bad File Descriptor... hmm
                    self.close()
                    return None

            if len(es) > 0:
                # Bad File Descriptor
                self.close()
                return None

            return len(ws) > 0

        # no socket or no connection
        return None 
开发者ID:caronc,项目名称:newsreap,代码行数:33,代码来源:SocketBase.py

示例4: _handle_socket_read

# 需要导入模块: from gevent import select [as 别名]
# 或者: from gevent.select import select [as 别名]
def _handle_socket_read(handler, sock):
    collected = b''
    while True:
        # a full packet before calling on_packet in the handler class
        ready = select.select([sock], [], [], 0.0)
        try:
            if ready[0]:
                data = sock.recv(4096)
                # print("data in: %s" % hex_bytes(data))

                collected += data

                # Try and consume repeatedly if multiple messages arrived
                # in the same packet
                while True:
                    collected1 = handler.consume(collected)
                    if collected1 is None:
                        print("Protocol requested to disconnect the socket")
                        break
                    if collected1 == collected:
                        break  # could not consume any more

                    collected = collected1
            else:
                handler.handle_inbox()

        except select.error:
            # Disconnected probably or another error
            break

    sock.close()
    handler.on_connection_lost() 
开发者ID:esl,项目名称:Pyrlang,代码行数:34,代码来源:helpers.py

示例5: _get_descriptors

# 需要导入模块: from gevent import select [as 别名]
# 或者: from gevent.select import select [as 别名]
def _get_descriptors(self):
        """Returns three elements tuple with socket descriptors ready
        for gevent.select.select
        """
        rlist = []
        wlist = []
        xlist = []

        for socket, flags in self.sockets:
            if isinstance(socket, zmq.Socket):
                rlist.append(socket.getsockopt(zmq.FD))
                continue
            elif isinstance(socket, int):
                fd = socket
            elif hasattr(socket, 'fileno'):
                try:
                    fd = int(socket.fileno())
                except:
                    raise ValueError('fileno() must return an valid integer fd')
            else:
                raise TypeError('Socket must be a 0MQ socket, an integer fd '
                                'or have a fileno() method: %r' % socket)

            if flags & zmq.POLLIN:
                rlist.append(fd)
            if flags & zmq.POLLOUT:
                wlist.append(fd)
            if flags & zmq.POLLERR:
                xlist.append(fd)

        return (rlist, wlist, xlist) 
开发者ID:zanph,项目名称:zanph,代码行数:33,代码来源:poll.py

示例6: getChar

# 需要导入模块: from gevent import select [as 别名]
# 或者: from gevent.select import select [as 别名]
def getChar():
    if geventSelect.select([sys.stdin], [], [], 0) == ([sys.stdin], [], []):  # non blocking raw_input, unix only
        return sys.stdin.read(1) 
开发者ID:kamwar,项目名称:simLAB,代码行数:5,代码来源:dbus_ctrl.py

示例7: gr1

# 需要导入模块: from gevent import select [as 别名]
# 或者: from gevent.select import select [as 别名]
def gr1():
    # Busy waits for a second, but we don't want to stick around...
    print('Started Polling: ', tic())
    select.select([], [], [], 2)
    print('Ended Polling: ', tic()) 
开发者ID:thsheep,项目名称:Python_Study,代码行数:7,代码来源:02select.py

示例8: gr2

# 需要导入模块: from gevent import select [as 别名]
# 或者: from gevent.select import select [as 别名]
def gr2():
    # Busy waits for a second, but we don't want to stick around...
    print('Started Polling: ', tic())
    select.select([], [], [], 2)
    print('Ended Polling: ', tic()) 
开发者ID:thsheep,项目名称:Python_Study,代码行数:7,代码来源:02select.py

示例9: __call__

# 需要导入模块: from gevent import select [as 别名]
# 或者: from gevent.select import select [as 别名]
def __call__(self, environ, start_response):
        self.environ = environ

        uwsgi.websocket_handshake()

        self._req_ctx = None
        if hasattr(uwsgi, 'request_context'):
            # uWSGI >= 2.1.x with support for api access across-greenlets
            self._req_ctx = uwsgi.request_context()
        else:
            # use event and queue for sending messages
            from gevent.event import Event
            from gevent.queue import Queue
            from gevent.select import select
            self._event = Event()
            self._send_queue = Queue()

            # spawn a select greenlet
            def select_greenlet_runner(fd, event):
                """Sets event when data becomes available to read on fd."""
                while True:
                    event.set()
                    try:
                        select([fd], [], [])[0]
                    except ValueError:
                        break
            self._select_greenlet = gevent.spawn(
                select_greenlet_runner,
                uwsgi.connection_fd(),
                self._event)

        self.app(self) 
开发者ID:quangtqag,项目名称:RealtimePythonChat,代码行数:34,代码来源:async_gevent_uwsgi.py

示例10: gr1

# 需要导入模块: from gevent import select [as 别名]
# 或者: from gevent.select import select [as 别名]
def gr1():
    # Busy waits for a second, but we don't want to stick around...
    print('Started Polling: %s' % tic())
    select.select([], [], [], 2)
    print('Ended Polling: %s' % tic()) 
开发者ID:archever,项目名称:notebook,代码行数:7,代码来源:test_2.py

示例11: gr2

# 需要导入模块: from gevent import select [as 别名]
# 或者: from gevent.select import select [as 别名]
def gr2():
    # Busy waits for a second, but we don't want to stick around...
    print('Started Polling: %s' % tic())
    select.select([], [], [], 2)
    print('Ended Polling: %s' % tic()) 
开发者ID:archever,项目名称:notebook,代码行数:7,代码来源:test_2.py

示例12: run_parallel

# 需要导入模块: from gevent import select [as 别名]
# 或者: from gevent.select import select [as 别名]
def run_parallel(self, hosts, cmd):
        codes = {"total": 0, "error": 0, "success": 0}

        def worker(host, cmd):
            p = Popen(self.get_parallel_ssh_options(host, cmd), stdout=PIPE, stderr=PIPE)
            while True:
                outs, _, _ = select([p.stdout, p.stderr], [], [])
                if p.stdout in outs:
                    outline = p.stdout.readline()
                else:
                    outline = ""
                if p.stderr in outs:
                    errline = p.stderr.readline()
                else:
                    errline = ""

                if outline == "" and errline == "" and p.poll() is not None:
                    break

                if outline != "":
                    print("%s: %s" % (colored(host, "blue", attrs=["bold"]), outline.strip()))
                if errline != "":
                    print("%s: %s" % (colored(host, "blue", attrs=["bold"]), colored(errline.strip(), "red")))
            if p.poll() == 0:
                codes["success"] += 1
            else:
                codes["error"] += 1
            codes["total"] += 1

        pool = Pool(self.ssh_threads)
        for host in hosts:
            pool.start(Greenlet(worker, host, cmd))
        pool.join()
        self.print_exec_results(codes) 
开发者ID:viert,项目名称:xcute,代码行数:36,代码来源:cli.py

示例13: ping_parallel

# 需要导入模块: from gevent import select [as 别名]
# 或者: from gevent.select import select [as 别名]
def ping_parallel(self, hosts, pc):
        """ping:\n pings host (using shell cmd)"""
        codes = {"total": 0, "error": 0, "success": 0}
        def worker(host):
            if pc == 0:
                args = ["ping", host]
            else:
                args = ["ping", "-c", str(pc), host]
            p = Popen(args, stdout=PIPE, stderr=PIPE)
            while True:
                outs, _, _ = select([p.stdout, p.stderr], [], [])
                if p.stdout in outs:
                    outline = p.stdout.readline()
                else:
                    outline = ""
                if p.stderr in outs:
                    errline = p.stderr.readline()
                else:
                    errline = ""

                if outline == "" and errline == "" and p.poll() is not None:
                    break

                if outline != "":
                    print("%s: %s" % (colored(host, "blue", attrs=["bold"]), outline.strip()))
                if errline != "":
                    print("%s: %s" % (colored(host, "blue", attrs=["bold"]), colored(errline.strip(), "red")))
            if p.poll() == 0:
                codes["success"] += 1
            else:
                codes["error"] += 1
            codes["total"] += 1

        pool = Pool(self.ssh_threads)
        for host in hosts:
            pool.start(Greenlet(worker, host))
        pool.join()
        self.print_exec_results(codes) 
开发者ID:viert,项目名称:xcute,代码行数:40,代码来源:cli.py

示例14: poll

# 需要导入模块: from gevent import select [as 别名]
# 或者: from gevent.select import select [as 别名]
def poll(self, timeout=-1):
        """Overridden method to ensure that the green version of
        Poller is used.

        Behaves the same as :meth:`zmq.core.Poller.poll`
        """

        if timeout is None:
            timeout = -1

        if timeout < 0:
            timeout = -1

        rlist = None
        wlist = None
        xlist = None

        if timeout > 0:
            tout = gevent.Timeout.start_new(timeout/1000.0)
        else:
            tout = None

        try:
            # Loop until timeout or events available
            rlist, wlist, xlist = self._get_descriptors()
            while True:
                events = super(_Poller, self).poll(0)
                if events or timeout == 0:
                    return events

                # wait for activity on sockets in a green way
                # set a minimum poll frequency,
                # because gevent < 1.0 cannot be trusted to catch edge-triggered FD events
                _bug_timeout = gevent.Timeout.start_new(self._gevent_bug_timeout)
                try:
                    select.select(rlist, wlist, xlist)
                except gevent.Timeout as t:
                    if t is not _bug_timeout:
                        raise
                finally:
                    _bug_timeout.cancel()

        except gevent.Timeout as t:
            if t is not tout:
                raise
            return []
        finally:
            if timeout > 0:
                tout.cancel() 
开发者ID:zanph,项目名称:zanph,代码行数:51,代码来源:poll.py

示例15: poll

# 需要导入模块: from gevent import select [as 别名]
# 或者: from gevent.select import select [as 别名]
def poll(self, timeout=-1):
        """Overridden method to ensure that the green version of
        Poller is used.

        Behaves the same as :meth:`zmq.core.Poller.poll`
        """

        if timeout is None:
            timeout = -1

        if timeout < 0:
            timeout = -1

        rlist = None
        wlist = None
        xlist = None

        if timeout > 0:
            tout = gevent.Timeout.start_new(timeout/1000.0)

        try:
            # Loop until timeout or events available
            rlist, wlist, xlist = self._get_descriptors()
            while True:
                events = super(_Poller, self).poll(0)
                if events or timeout == 0:
                    return events

                # wait for activity on sockets in a green way
                # set a minimum poll frequency,
                # because gevent < 1.0 cannot be trusted to catch edge-triggered FD events
                _bug_timeout = gevent.Timeout.start_new(self._gevent_bug_timeout)
                try:
                    select.select(rlist, wlist, xlist)
                except gevent.Timeout as t:
                    if t is not _bug_timeout:
                        raise
                finally:
                    _bug_timeout.cancel()

        except gevent.Timeout as t:
            if t is not tout:
                raise
            return []
        finally:
           if timeout > 0:
               tout.cancel() 
开发者ID:alwye,项目名称:trex-http-proxy,代码行数:49,代码来源:poll.py


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