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Python select.kqueue方法代码示例

本文整理汇总了Python中select.kqueue方法的典型用法代码示例。如果您正苦于以下问题:Python select.kqueue方法的具体用法?Python select.kqueue怎么用?Python select.kqueue使用的例子?那么恭喜您, 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select的用法示例。


在下文中一共展示了select.kqueue方法的9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: poll

# 需要导入模块: import select [as 别名]
# 或者: from select import kqueue [as 别名]
def poll(self, timeout):
        kevents = self._kqueue.control(None, 1000, timeout)
        events = {}
        for kevent in kevents:
            fd = kevent.ident
            if kevent.filter == select.KQ_FILTER_READ:
                events[fd] = events.get(fd, 0) | IOLoop.READ
            if kevent.filter == select.KQ_FILTER_WRITE:
                if kevent.flags & select.KQ_EV_EOF:
                    # If an asynchronous connection is refused, kqueue
                    # returns a write event with the EOF flag set.
                    # Turn this into an error for consistency with the
                    # other IOLoop implementations.
                    # Note that for read events, EOF may be returned before
                    # all data has been consumed from the socket buffer,
                    # so we only check for EOF on write events.
                    events[fd] = IOLoop.ERROR
                else:
                    events[fd] = events.get(fd, 0) | IOLoop.WRITE
            if kevent.flags & select.KQ_EV_ERROR:
                events[fd] = events.get(fd, 0) | IOLoop.ERROR
        return events.items() 
开发者ID:tao12345666333,项目名称:tornado-zh,代码行数:24,代码来源:kqueue.py

示例2: _can_allocate

# 需要导入模块: import select [as 别名]
# 或者: from select import kqueue [as 别名]
def _can_allocate(struct):
    """Checks that select structs can be allocated by the underlying operating system.

    Otherwise it could be just advertised by the select module. We don't check select() because we'll be hopeful
    that most platforms that don't have it available will not advertise it. (ie: GAE).
    """
    try:
        # select.poll() objects won't fail until used.
        if struct == 'poll':
            p = select.poll()
            p.poll(0)

        # All others will fail on allocation.
        else:
            getattr(select, struct)().close()
        return True
    except (OSError, AttributeError):
        return False


# Choose the best implementation, roughly:
# kqueue == epoll > poll > select. Devpoll not supported. (See above)
# select() also can't accept a FD > FD_SETSIZE (usually around 1024) 
开发者ID:snowflakedb,项目名称:snowflake-connector-python,代码行数:25,代码来源:ssl_wrap_util.py

示例3: DefaultSelector

# 需要导入模块: import select [as 别名]
# 或者: from select import kqueue [as 别名]
def DefaultSelector():
    """This function serves as a first call for DefaultSelector to detect.

    It is for when the select module is being monkey-patched incorrectly by eventlet, greenlet,
    and preserve proper behavior.
    """
    global _DEFAULT_SELECTOR
    if _DEFAULT_SELECTOR is None:
        if _can_allocate('kqueue'):
            _DEFAULT_SELECTOR = KqueueSelector
        elif _can_allocate('epoll'):
            _DEFAULT_SELECTOR = EpollSelector
        elif _can_allocate('poll'):
            _DEFAULT_SELECTOR = PollSelector
        elif hasattr(select, 'select'):
            _DEFAULT_SELECTOR = SelectSelector
        else:  # Platform-specific: AppEngine
            raise ValueError('Platform does not have a selector')
    return _DEFAULT_SELECTOR() 
开发者ID:snowflakedb,项目名称:snowflake-connector-python,代码行数:21,代码来源:ssl_wrap_util.py

示例4: _can_allocate

# 需要导入模块: import select [as 别名]
# 或者: from select import kqueue [as 别名]
def _can_allocate(struct):
    """ Checks that select structs can be allocated by the underlying
    operating system, not just advertised by the select module. We don't
    check select() because we'll be hopeful that most platforms that
    don't have it available will not advertise it. (ie: GAE) """
    try:
        # select.poll() objects won't fail until used.
        if struct == 'poll':
            p = select.poll()
            p.poll(0)

        # All others will fail on allocation.
        else:
            getattr(select, struct)().close()
        return True
    except (OSError, AttributeError) as e:
        return False


# Choose the best implementation, roughly:
# kqueue == epoll > poll > select. Devpoll not supported. (See above)
# select() also can't accept a FD > FD_SETSIZE (usually around 1024) 
开发者ID:getavalon,项目名称:core,代码行数:24,代码来源:selectors.py

示例5: DefaultSelector

# 需要导入模块: import select [as 别名]
# 或者: from select import kqueue [as 别名]
def DefaultSelector():
    """ This function serves as a first call for DefaultSelector to
    detect if the select module is being monkey-patched incorrectly
    by eventlet, greenlet, and preserve proper behavior. """
    global _DEFAULT_SELECTOR
    if _DEFAULT_SELECTOR is None:
        if _can_allocate('kqueue'):
            _DEFAULT_SELECTOR = KqueueSelector
        elif _can_allocate('epoll'):
            _DEFAULT_SELECTOR = EpollSelector
        elif _can_allocate('poll'):
            _DEFAULT_SELECTOR = PollSelector
        elif hasattr(select, 'select'):
            _DEFAULT_SELECTOR = SelectSelector
        else:  # Platform-specific: AppEngine
            raise ValueError('Platform does not have a selector')
    return _DEFAULT_SELECTOR() 
开发者ID:getavalon,项目名称:core,代码行数:19,代码来源:selectors.py

示例6: __init__

# 需要导入模块: import select [as 别名]
# 或者: from select import kqueue [as 别名]
def __init__(self):
        if hasattr(select, 'epoll'):
            self._impl = select.epoll()
            model = 'epoll'
        elif hasattr(select, 'kqueue'):
            self._impl = KqueueLoop()
            model = 'kqueue'
        elif hasattr(select, 'select'):
            self._impl = SelectLoop()
            model = 'select'
        else:
            raise Exception('can not find any available functions in select '
                            'package')
        self._fdmap = {}  # (f, handler)
        self._last_time = time.time()
        self._periodic_callbacks = []
        self._stopping = False
        logging.debug('using event model: %s', model) 
开发者ID:ntfreedom,项目名称:neverendshadowsocks,代码行数:20,代码来源:eventloop.py

示例7: test_issue30058

# 需要导入模块: import select [as 别名]
# 或者: from select import kqueue [as 别名]
def test_issue30058(self):
        # changelist must be an iterable
        kq = select.kqueue()
        a, b = socket.socketpair()
        ev = select.kevent(a, select.KQ_FILTER_READ, select.KQ_EV_ADD | select.KQ_EV_ENABLE)

        kq.control([ev], 0)
        # not a list
        kq.control((ev,), 0)
        # __len__ is not consistent with __iter__
        class BadList:
            def __len__(self):
                return 0
            def __iter__(self):
                for i in range(100):
                    yield ev
        kq.control(BadList(), 0)
        # doesn't have __len__
        kq.control(iter([ev]), 0)

        a.close()
        b.close()
        kq.close() 
开发者ID:IronLanguages,项目名称:ironpython2,代码行数:25,代码来源:test_kqueue.py

示例8: poll

# 需要导入模块: import select [as 别名]
# 或者: from select import kqueue [as 别名]
def poll(self, timeout=None):
        events = self.kqueue.control(self.events, 128, timeout)
        rv = []
        for ev in events:
            obj = self.event_to_object.get(ev.ident)
            if obj is None:
                # It happens surprisingly frequently that kqueue returns
                # write events things no longer in the kqueue.  Not sure
                # why
                continue
            if ev.filter == select.KQ_FILTER_READ:
                rv.append((obj, 'read'))
            elif ev.filter == select.KQ_FILTER_WRITE:
                rv.append((obj, 'write'))
            if ev.flags & select.KQ_EV_EOF:
                rv.append((obj, 'close'))
        return rv 
开发者ID:getsentry,项目名称:rb,代码行数:19,代码来源:poll.py

示例9: queue_event

# 需要导入模块: import select [as 别名]
# 或者: from select import kqueue [as 别名]
def queue_event(self, event):
        """
        Handles queueing a single event object.

        :param event:
            An instance of :class:`watchdog.events.FileSystemEvent`
            or a subclass.
        """
        # Handles all the book keeping for queued events.
        # We do not need to fire moved/deleted events for all subitems in
        # a directory tree here, because this function is called by kqueue
        # for all those events anyway.
        EventEmitter.queue_event(self, event)
        if event.event_type == EVENT_TYPE_CREATED:
            self._register_kevent(event.src_path, event.is_directory)
        elif event.event_type == EVENT_TYPE_MOVED:
            self._unregister_kevent(event.src_path)
            self._register_kevent(event.dest_path, event.is_directory)
        elif event.event_type == EVENT_TYPE_DELETED:
            self._unregister_kevent(event.src_path) 
开发者ID:restran,项目名称:hacker-scripts,代码行数:22,代码来源:kqueue.py


注:本文中的select.kqueue方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。