本文整理汇总了Python中tornado.ioloop.stop方法的典型用法代码示例。如果您正苦于以下问题:Python ioloop.stop方法的具体用法?Python ioloop.stop怎么用?Python ioloop.stop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类tornado.ioloop
的用法示例。
在下文中一共展示了ioloop.stop方法的11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: stop
# 需要导入模块: from tornado import ioloop [as 别名]
# 或者: from tornado.ioloop import stop [as 别名]
def stop(self):
"""Stop the I/O loop.
If the event loop is not currently running, the next call to `start()`
will return immediately.
To use asynchronous methods from otherwise-synchronous code (such as
unit tests), you can start and stop the event loop like this::
ioloop = IOLoop()
async_method(ioloop=ioloop, callback=ioloop.stop)
ioloop.start()
``ioloop.start()`` will return after ``async_method`` has run
its callback, whether that callback was invoked before or
after ``ioloop.start``.
Note that even after `stop` has been called, the `IOLoop` is not
completely stopped until `IOLoop.start` has also returned.
Some work that was scheduled before the call to `stop` may still
be run before the `IOLoop` shuts down.
"""
raise NotImplementedError()
示例2: Start
# 需要导入模块: from tornado import ioloop [as 别名]
# 或者: from tornado.ioloop import stop [as 别名]
def Start(self, timeout=None):
"""Run the mainloop repetitively until the program is finished.
"Finished" means one of three things: no event handlers remain (unlikely),
the timeout expires, or someone calls ioloop.stop().
Args:
timeout: the time at which the loop will be forcibly stopped. Mostly
useful in unit tests. None means no timeout; 0 means stop instantly.
"""
tmo = None
if timeout is not None:
self.loop_timeout = tmo = self.ioloop.add_timeout(
datetime.timedelta(seconds=timeout), self._TimedOut)
try:
self.ioloop.start()
finally:
if tmo:
self.ioloop.remove_timeout(tmo)
self.loop_timeout = None
示例3: RunOnce
# 需要导入模块: from tornado import ioloop [as 别名]
# 或者: from tornado.ioloop import stop [as 别名]
def RunOnce(self, timeout=None):
"""Run the mainloop for exactly one iteration.
Processes all events that occur during that iteration, including
timeouts.
Args:
timeout: same meaning as in Start().
"""
# TODO(apenwarr): timeout is effectively always 0 for now. Oops.
r, w = os.pipe()
try:
os.write(w, 'x')
self.ioloop.add_handler(r, lambda fd, events: self.ioloop.stop(),
self.ioloop.READ)
self.Start(timeout)
finally:
os.close(r)
os.close(w)
self.ioloop.remove_handler(r)
示例4: _start_application
# 需要导入模块: from tornado import ioloop [as 别名]
# 或者: from tornado.ioloop import stop [as 别名]
def _start_application(self, application, port):
# Note: No significant application logic should be executed before this point. The call to application.listen()
# will raise an exception if another process is using the same port. We rely on this exception to force us to
# exit if there are any port conflicts.
try:
# If SSL cert and key files are provided in configuration, ClusterRunner wil start with HTTPS protocol.
# Otherwise ClusterRunner will start with HTTP protocol.
server = HTTPServer(application, ssl_options=self._get_https_options())
server.listen(port, '0.0.0.0')
except OSError:
self._logger.error('Could not start application on port {}. Is port already in use?'.format(port))
sys.exit(1)
ioloop = tornado.ioloop.IOLoop.instance()
# add a teardown callback that will stop the tornado server
stop_tornado_ioloop = functools.partial(ioloop.add_callback, callback=ioloop.stop)
UnhandledExceptionHandler.singleton().add_teardown_callback(stop_tornado_ioloop)
return ioloop
示例5: shutdown
# 需要导入模块: from tornado import ioloop [as 别名]
# 或者: from tornado.ioloop import stop [as 别名]
def shutdown(ioloop, server):
''' 关闭server
:param server: tornado.httpserver.HTTPServer
'''
logging.info(
"HTTP interpreter service will shutdown in %ss...", 1)
server.stop()
deadline = time.time() + 1
def stop_loop():
''' 尝试关闭loop
'''
now = time.time()
if now < deadline and (ioloop._callbacks or ioloop._timeouts):
ioloop.add_timeout(now + 1, stop_loop)
else:
# 处理完现有的 callback 和 timeout 后
ioloop.stop()
logging.info('Shutdown!')
stop_loop()
示例6: close
# 需要导入模块: from tornado import ioloop [as 别名]
# 或者: from tornado.ioloop import stop [as 别名]
def close(self, all_fds=False):
"""Closes the `IOLoop`, freeing any resources used.
If ``all_fds`` is true, all file descriptors registered on the
IOLoop will be closed (not just the ones created by the
`IOLoop` itself).
Many applications will only use a single `IOLoop` that runs for the
entire lifetime of the process. In that case closing the `IOLoop`
is not necessary since everything will be cleaned up when the
process exits. `IOLoop.close` is provided mainly for scenarios
such as unit tests, which create and destroy a large number of
``IOLoops``.
An `IOLoop` must be completely stopped before it can be closed. This
means that `IOLoop.stop()` must be called *and* `IOLoop.start()` must
be allowed to return before attempting to call `IOLoop.close()`.
Therefore the call to `close` will usually appear just after
the call to `start` rather than near the call to `stop`.
.. versionchanged:: 3.1
If the `IOLoop` implementation supports non-integer objects
for "file descriptors", those objects will have their
``close`` method when ``all_fds`` is true.
"""
raise NotImplementedError()
示例7: start
# 需要导入模块: from tornado import ioloop [as 别名]
# 或者: from tornado.ioloop import stop [as 别名]
def start(self):
"""Starts the I/O loop.
The loop will run until one of the callbacks calls `stop()`, which
will make the loop stop after the current event iteration completes.
"""
raise NotImplementedError()
示例8: stop
# 需要导入模块: from tornado import ioloop [as 别名]
# 或者: from tornado.ioloop import stop [as 别名]
def stop(self):
pass
示例9: __init__
# 需要导入模块: from tornado import ioloop [as 别名]
# 或者: from tornado.ioloop import stop [as 别名]
def __init__(self, pubnub, url, urllib_func=None,
callback=None, error=None, id=None, timeout=5):
self.url = url
self.id = id
self.callback = callback
self.error = error
self.stop = False
self._urllib_func = urllib_func
self.timeout = timeout
self.pubnub = pubnub
示例10: cancel
# 需要导入模块: from tornado import ioloop [as 别名]
# 或者: from tornado.ioloop import stop [as 别名]
def cancel(self):
self.stop = True
self.callback = None
self.error = None
示例11: start
# 需要导入模块: from tornado import ioloop [as 别名]
# 或者: from tornado.ioloop import stop [as 别名]
def start(cls):
if cls.started:
return
"""
IOLoop.running() was removed as of Tornado 2.4; see for example
https://groups.google.com/forum/#!topic/python-tornado/QLMzkpQBGOY
Thus there is no correct way to check if the loop has already been
launched. We may end up with two concurrently running loops in that
unlucky case with all the expected consequences.
"""
ioloop = tornado.ioloop.IOLoop.instance()
def shutdown():
ioloop.stop()
print("Server is stopped")
sys.stdout.flush()
cls.started = False
@contextmanager
def catch_sigint():
old_handler = signal.signal(
signal.SIGINT,
lambda sig, frame: ioloop.add_callback_from_signal(shutdown))
try:
yield
finally:
signal.signal(signal.SIGINT, old_handler)
# Set the flag to True *before* blocking on ioloop.start()
cls.started = True
print("Press Ctrl+C to stop WebAgg server")
sys.stdout.flush()
with catch_sigint():
ioloop.start()