def __init__ (self): Task.__init__(self) self.workers = set() self.pinger = makePinger() # socket.close() must be performed by this Select task -- otherwise # we'll end up blocking on socket that doesn't exist. self.pending_worker_closes = []
def __init__ (self): Task.__init__(self) self._workers = set() self.pinger = makePinger() # socket.open() and socket.close() are performed by this Select task # other threads register open() and close() requests by adding lambdas # to this thread-safe queue. self._pending_commands = Queue.Queue()
def __init__(self):
Task.__init__(self)
self._workers = set()
self.pinger = makePinger()
# socket.open() and socket.close() are performed by this Select task
# other threads register open() and close() requests by adding lambdas
# to this thread-safe queue.
self._pending_commands = Queue.Queue()
class ReadLoop (object):
"""
Singleton IO Loop
Serves "clients", which are objects with fileno() and _do_rx() methods.
You add clients with add() and remove them with remove().
This class runs a Task which selects on the clients. When one becomes
readable, its _do_rx() is called.
It is intended to be run as a singleton. A single instance is available
as ReadLoop.singleton.
"""
IO_TIMEOUT = 2
def __init__ (self):
self._clients = []
self._started = False
self._task = None
core.add_listener(self._handle_GoingDownEvent, weak=True)
self.running = True
class _singleton_property (object):
def __get__ (self, instance, owner):
if owner._singleton is None:
owner._singleton = owner()
return owner._singleton
_singleton = None
singleton = _singleton_property()
def _handle_GoingDownEvent (self, event):
self.running = False
def add (self, client):
#TODO: Should these be weak refs?
self._clients.append(client)
self._start()
def remove (self, client):
self._clients.remove(client)
def _start (self):
if not self._started:
self._task = Task(target=self._task_proc)
self._task.start()
self._started = True
def _task_proc (self):
#log.info("%s task starting", type(self).__name__)
while core.running and self.running:
rr,ww,xx = yield Select(self._clients, [], [], self.IO_TIMEOUT)
for client in rr:
client._do_rx()
def __init__(self): IOMaster.__init__(self) Task.__init__(self)
def __init__(self):
IOMaster.__init__(self)
Task.__init__(self)
def _start (self):
if not self._started:
self._task = Task(target=self._task_proc)
self._task.start()
self._started = True