本文整理汇总了Python中tornado.ioloop.IOLoop.current方法的典型用法代码示例。如果您正苦于以下问题：Python IOLoop.current方法的具体用法？Python IOLoop.current怎么用？Python IOLoop.current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类tornado.ioloop.IOLoop的用法示例。
在下文中一共展示了IOLoop.current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: main
# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import current [as 别名]
def main():
parse_command_line()
app = Application([('/', ChunkHandler)])
app.listen(options.port, address='127.0.0.1')
def callback(response):
response.rethrow()
assert len(response.body) == (options.num_chunks * options.chunk_size)
logging.warning("fetch completed in %s seconds", response.request_time)
IOLoop.current().stop()
logging.warning("Starting fetch with curl client")
curl_client = CurlAsyncHTTPClient()
curl_client.fetch('http://localhost:%d/' % options.port,
callback=callback)
IOLoop.current().start()
logging.warning("Starting fetch with simple client")
simple_client = SimpleAsyncHTTPClient()
simple_client.fetch('http://localhost:%d/' % options.port,
callback=callback)
IOLoop.current().start() 示例2: main
# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import current [as 别名]
def main():
parse_command_line(final=False)
parse_config_file(options.config_file)
app = Application(
[
('/', MainHandler),
('/login', LoginHandler),
('/logout', LogoutHandler),
],
login_url='/login',
**options.group_dict('application'))
app.listen(options.port)
logging.info('Listening on http://localhost:%d' % options.port)
IOLoop.current().start() 示例3: write_error
# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import current [as 别名]
def write_error(self, status_code, **kwargs):
"""复写这个方法来实现自定义错误页.
``write_error`` 可能调用 `write`, `render`, `set_header`,等
来产生一般的输出.
如果错误是由未捕获的异常造成的(包括HTTPError), 三个一组的
``exc_info`` 将变成可用的通过 ``kwargs["exc_info"]``.
注意这个异常可能不是"当前(current)" 目的或方法的异常就像
``sys.exc_info()`` 或 ``traceback.format_exc``.
"""
if self.settings.get("serve_traceback") and "exc_info" in kwargs:
# in debug mode, try to send a traceback
self.set_header('Content-Type', 'text/plain')
for line in traceback.format_exception(*kwargs["exc_info"]):
self.write(line)
self.finish()
else:
self.finish("<html><title>%(code)d: %(message)s</title>"
"<body>%(code)d: %(message)s</body></html>" % {
"code": status_code,
"message": self._reason,
}) 示例4: listen
# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import current [as 别名]
def listen(self, port, address="", **kwargs):
"""为应用程序在给定端口上启动一个HTTP server.
这是一个方便的别名用来创建一个 `.HTTPServer` 对象并调用它
的listen方法. `HTTPServer.listen <.TCPServer.listen>`
不支持传递关键字参数给 `.HTTPServer` 构造器. 对于高级用途
(e.g. 多进程模式), 不要使用这个方法; 创建一个
`.HTTPServer` 并直接调用它的
`.TCPServer.bind`/`.TCPServer.start` 方法.
注意在调用这个方法之后你仍然需要调用
``IOLoop.current().start()`` 来启动该服务.
返回 `.HTTPServer` 对象.
.. versionchanged:: 4.3
现在返回 `.HTTPServer` 对象.
"""
# import is here rather than top level because HTTPServer
# is not importable on appengine
from tornado.httpserver import HTTPServer
server = HTTPServer(self, **kwargs)
server.listen(port, address)
return server 示例5: __init__
# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import current [as 别名]
def __init__(self, io_loop=None):
if not io_loop:
io_loop = tornado.ioloop.IOLoop.current()
self._io_loop = io_loop
self._readers = {} # map of reader objects to fd
self._writers = {} # map of writer objects to fd
self._fds = {} # a map of fd to a (reader, writer) tuple
self._delayedCalls = {}
PosixReactorBase.__init__(self)
self.addSystemEventTrigger('during', 'shutdown', self.crash)
# IOLoop.start() bypasses some of the reactor initialization.
# Fire off the necessary events if they weren't already triggered
# by reactor.run().
def start_if_necessary():
if not self._started:
self.fireSystemEvent('startup')
self._io_loop.add_callback(start_if_necessary)
# IReactorTime 示例6: install
# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import current [as 别名]
def install(io_loop=None):
"""Install this package as the default Twisted reactor.
``install()`` must be called very early in the startup process,
before most other twisted-related imports. Conversely, because it
initializes the `.IOLoop`, it cannot be called before
`.fork_processes` or multi-process `~.TCPServer.start`. These
conflicting requirements make it difficult to use `.TornadoReactor`
in multi-process mode, and an external process manager such as
``supervisord`` is recommended instead.
.. versionchanged:: 4.1
The ``io_loop`` argument is deprecated.
"""
if not io_loop:
io_loop = tornado.ioloop.IOLoop.current()
reactor = TornadoReactor(io_loop)
from twisted.internet.main import installReactor
installReactor(reactor)
return reactor 示例7: sleep
# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import current [as 别名]
def sleep(duration):
"""Return a `.Future` that resolves after the given number of seconds.
When used with ``yield`` in a coroutine, this is a non-blocking
analogue to `time.sleep` (which should not be used in coroutines
because it is blocking)::
yield gen.sleep(0.5)
Note that calling this function on its own does nothing; you must
wait on the `.Future` it returns (usually by yielding it).
.. versionadded:: 4.1
"""
f = Future()
IOLoop.current().call_later(duration, lambda: f.set_result(None))
return f 示例8: __init__
# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import current [as 别名]
def __init__(self, gen, result_future, first_yielded):
self.gen = gen
self.result_future = result_future
self.future = _null_future
self.yield_point = None
self.pending_callbacks = None
self.results = None
self.running = False
self.finished = False
self.had_exception = False
self.io_loop = IOLoop.current()
# For efficiency, we do not create a stack context until we
# reach a YieldPoint (stack contexts are required for the historical
# semantics of YieldPoints, but not for Futures). When we have
# done so, this field will be set and must be called at the end
# of the coroutine.
self.stack_context_deactivate = None
if self.handle_yield(first_yielded):
self.run() 示例9: acquire
# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import current [as 别名]
def acquire(self, timeout=None):
"""递减计数器. 返回一个 Future 对象.
如果计数器(counter)为0将会阻塞, 等待 `.release`. 在超时之后
Future 对象将会抛出 `.TimeoutError` .
"""
waiter = Future()
if self._value > 0:
self._value -= 1
waiter.set_result(_ReleasingContextManager(self))
else:
self._waiters.append(waiter)
if timeout:
def on_timeout():
waiter.set_exception(gen.TimeoutError())
self._garbage_collect()
io_loop = ioloop.IOLoop.current()
timeout_handle = io_loop.add_timeout(timeout, on_timeout)
waiter.add_done_callback(
lambda _: io_loop.remove_timeout(timeout_handle))
return waiter 示例10: save_cursor_position
# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import current [as 别名]
def save_cursor_position(self, mode=None):
"""
Saves the cursor position and current rendition settings to
:attr:`self.saved_cursorX`, :attr:`self.saved_cursorY`, and
:attr:`self.saved_rendition`
.. note:: Also handles the set/restore "Private Mode Settings" sequence.
"""
if mode: # Set DEC private mode
# TODO: Need some logic here to save the current expanded mode
# so we can restore it in _set_top_bottom().
self.set_expanded_mode(mode)
# NOTE: args and kwargs are here to make sure we don't get an exception
# when we're called via escape sequences.
self.saved_cursorX = self.cursorX
self.saved_cursorY = self.cursorY
self.saved_rendition = self.cur_rendition 示例11: _dsr_get_cursor_position
# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import current [as 别名]
def _dsr_get_cursor_position(self):
"""
Returns the current cursor positition as a DSR response in the form of::
'\x1b<self.cursorY>;<self.cursorX>R'
Also executes CALLBACK_DSR with the same output as the first argument.
Example::
self.callbacks[CALLBACK_DSR]('\x1b20;123R')
"""
esc_cursor_pos = '\x1b%s;%sR' % (self.cursorY, self.cursorX)
try:
for callback in self.callbacks[CALLBACK_DSR].values():
callback(esc_cursor_pos)
except TypeError:
pass
return esc_cursor_pos 示例12: insert_line
# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import current [as 别名]
def insert_line(self, n=1):
"""
Inserts *n* lines at the current cursor position.
"""
#logging.debug("insert_line(%s)" % n)
if not n: # Takes care of an empty string
n = 1
n = int(n)
for i in xrange(n):
self.screen.pop(self.bottom_margin) # Remove the bottom line
# Remove bottom line's style information as well:
self.renditions.pop(self.bottom_margin)
empty_line = array('u', u' ' * self.cols) # Line full of spaces
self.screen.insert(self.cursorY, empty_line) # Insert at cursor
# Insert a new empty rendition as well:
empty_rend = array('u', unichr(1000) * self.cols)
self.renditions.insert(self.cursorY, empty_rend) # Insert at cursor 示例13: delete_line
# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import current [as 别名]
def delete_line(self, n=1):
"""
Deletes *n* lines at the current cursor position.
"""
#logging.debug("delete_line(%s)" % n)
if not n: # Takes care of an empty string
n = 1
n = int(n)
for i in xrange(n):
self.screen.pop(self.cursorY) # Remove the line at the cursor
# Remove the line's style information as well:
self.renditions.pop(self.cursorY)
# Now add an empty line and empty set of renditions to the bottom of
# the view
empty_line = array('u', u' ' * self.cols) # Line full of spaces
# Add it to the bottom of the view:
self.screen.insert(self.bottom_margin, empty_line) # Insert at bottom
# Insert a new empty rendition as well:
empty_rend = array('u', unichr(1000) * self.cols)
self.renditions.insert(self.bottom_margin, empty_rend) 示例14: _set_timeout
# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import current [as 别名]
def _set_timeout(future, timeout):
if timeout:
def on_timeout():
future.set_exception(gen.TimeoutError())
io_loop = ioloop.IOLoop.current()
timeout_handle = io_loop.add_timeout(timeout, on_timeout)
future.add_done_callback(
lambda _: io_loop.remove_timeout(timeout_handle)) 示例15: initialize
# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import current [as 别名]
def initialize(self, io_loop=None, executor=None, close_executor=True):
self.io_loop = io_loop or IOLoop.current()
if executor is not None:
self.executor = executor
self.close_executor = close_executor
else:
self.executor = dummy_executor
self.close_executor = False