t.i.c.CFReactor(PosixReactorBase) : class documentation

Part of twisted.internet.cfreactor View Source View In Hierarchy

Implements interfaces: twisted.internet.interfaces.IReactorFDSet

The CoreFoundation reactor.

You probably want to use this via the install API.
Instance Variables_fdmapa dictionary, mapping an integer (a file descriptor) to a 4-tuple of:
  • source: a CFRunLoopSource; the source associated with this socket.
  • socket: a CFSocket wrapping the file descriptor.
  • descriptor: an IReadDescriptor and/or IWriteDescriptor provider.
  • read-write: a 2-list of booleans: respectively, whether this descriptor is currently registered for reading or registered for writing.
_idmapa dictionary, mapping the id() of an IReadDescriptor or IWriteDescriptor to a fd in _fdmap. Implemented in this manner so that we don't have to rely (even more) on the hashability of IReadDescriptor providers, and we know that they won't be collected since these are kept in sync with _fdmap. Necessary because the .fileno() of a file descriptor may change at will, so we need to be able to look up what its file descriptor used to be, so that we can look it up in _fdmap
_cfrunloopthe CFRunLoop pyobjc object wrapped by this reactor.
_inCFLoopIs CFRunLoopRun currently running? (type: bool )
_currentSimulatorif a CFTimer is currently scheduled with the CF run loop to run Twisted callLater calls, this is a reference to it. Otherwise, it is None
Method __init__ Undocumented
Method installWaker Override installWaker in order to use _WakerPlus; otherwise this should be exactly the same as the parent implementation.
Method addReader Implement IReactorFDSet.addReader.
Method addWriter Implement IReactorFDSet.addWriter.
Method removeReader Implement IReactorFDSet.removeReader.
Method removeWriter Implement IReactorFDSet.removeWriter.
Method removeAll Implement IReactorFDSet.removeAll.
Method getReaders Implement IReactorFDSet.getReaders.
Method getWriters Implement IReactorFDSet.getWriters.
Method mainLoop Run the runner (CFRunLoopRun or something that calls it), which runs the run loop until crash() is called.
Method callLater Implement IReactorTime.callLater.
Method stop Implement IReactorCore.stop.
Method crash Implement IReactorCore.crash
Method iterate Emulate the behavior of iterate() for things that want to call it, by letting the loop run for a little while and then scheduling a timed call to exit it.
Method _socketCallback The socket callback issued by CFRunLoop. This will issue doRead or doWrite calls to the IReadDescriptor and IWriteDescriptor registered with the file descriptor that we are being notified of.
Method _watchFD Register a file descriptor with the CFRunLoop, or modify its state so that it's listening for both notifications (read and write) rather than just one; used to implement addReader and addWriter.
Method _flag2idx Convert a kCFSocket... constant to an index into the read/write state list (_READ or _WRITE) (the 4th element of the value of self._fdmap).
Method _unwatchFD Unregister a file descriptor with the CFRunLoop, or modify its state so that it's listening for only one notification (read or write) as opposed to both; used to implement removeReader and removeWriter.
Method _moveCallLaterSooner No summary
Method _scheduleSimulate Schedule a call to self.runUntilCurrent. This will cancel the currently scheduled call if it is already scheduled.
Method _stopNow Immediately stop the CFRunLoop (which must be running!).

Inherited from PosixReactorBase:

Method spawnProcess Spawn a process, with a process protocol.
Method listenUDP Connects a given DatagramProtocol to the given numeric UDP port.
Method listenMulticast Connects a given DatagramProtocol to the given numeric UDP port.
Method connectUNIX
Method listenUNIX
Method listenUNIXDatagram Connects a given DatagramProtocol to the given path.
Method connectUNIXDatagram Connects a ConnectedDatagramProtocol instance to a path.
Method listenTCP
Method connectTCP
Method connectSSL
Method listenSSL
Method listenWith Undocumented
Method connectWith Undocumented
Method _disconnectSelectable Utility function for disconnecting a selectable.
Method _handleSignals Extend the basic signal handling logic to also support handling SIGCHLD to know when to try to reap child processes.
Method _uninstallHandler If a child waker was created and installed, uninstall it now.
Method _removeAll Remove all readers and writers, and list of removed IReadDescriptors and IWriteDescriptors.

Inherited from _SignalReactorMixin (via PosixReactorBase):

Method startRunning Extend the base implementation in order to remember whether signal handlers should be installed later.
Method run Undocumented
Method _reallyStartRunning Extend the base implementation by also installing signal handlers, if self._installSignalHandlers is true.

Inherited from ReactorBase (via PosixReactorBase):

Method installResolver Set the internal resolver to use to for name lookups.
Method wakeUp Wake up the event loop.
Method doIteration Do one iteration over the readers and writers which have been added.
Method resolve Return a Deferred that will resolve a hostname.
Method sigInt Handle a SIGINT interrupt.
Method sigBreak Handle a SIGBREAK interrupt.
Method sigTerm Handle a SIGTERM interrupt.
Method disconnectAll Disconnect every reader, and writer in the system.
Method fireSystemEvent See twisted.internet.interfaces.IReactorCore.fireSystemEvent.
Method addSystemEventTrigger See twisted.internet.interfaces.IReactorCore.addSystemEventTrigger.
Method removeSystemEventTrigger See twisted.internet.interfaces.IReactorCore.removeSystemEventTrigger.
Method callWhenRunning See twisted.internet.interfaces.IReactorCore.callWhenRunning.
Method startRunning Method called when reactor starts: do some initialization and fire startup events.
Method getDelayedCalls No summary
Method timeout Undocumented
Method runUntilCurrent Run all pending timed calls.
Method callFromThread 0 See twisted.internet.interfaces.IReactorThreads.callFromThread.
Method getThreadPool See twisted.internet.interfaces.IReactorThreads.getThreadPool.
Method callInThread See twisted.internet.interfaces.IReactorThreads.callInThread.
Method suggestThreadPoolSize See twisted.internet.interfaces.IReactorThreads.suggestThreadPoolSize.
Method callFromThread Cause a function to be executed by the reactor thread.
Method _reallyStartRunning Method called to transition to the running state. This should happen in the during startup event trigger phase.
Method _cancelCallLater Undocumented
Method _insertNewDelayedCalls Undocumented
Method _checkProcessArgs Check for valid arguments and environment to spawnProcess.
Method _initThreads Undocumented
Method _initThreadPool Create the threadpool accessible with callFromThread.
Method _stopThreadPool No summary
def __init__(self, runLoop=None, runner=None): (source)
Undocumented
def installWaker(self): (source)
Override installWaker in order to use _WakerPlus; otherwise this should be exactly the same as the parent implementation.
def _socketCallback(self, cfSocket, callbackType, ignoredAddress, ignoredData, context): (source)
The socket callback issued by CFRunLoop. This will issue doRead or doWrite calls to the IReadDescriptor and IWriteDescriptor registered with the file descriptor that we are being notified of.
ParameterscfSocketThe CFSocket which has got some activity.
callbackTypeThe type of activity that we are being notified of. Either kCFSocketReadCallBack or kCFSocketWriteCallBack.
ignoredAddressUnused, because this is not used for either of the callback types we register for.
ignoredDataUnused, because this is not used for either of the callback types we register for.
contextThe data associated with this callback by CFSocketCreateWithNative (in CFReactor._watchFD). A 2-tuple of (int, CFRunLoopSource).
def _watchFD(self, fd, descr, flag): (source)
Register a file descriptor with the CFRunLoop, or modify its state so that it's listening for both notifications (read and write) rather than just one; used to implement addReader and addWriter.
ParametersfdThe file descriptor. (type: int )
descrthe IReadDescriptor or IWriteDescriptor
flagthe flag to register for callbacks on, either kCFSocketReadCallBack or kCFSocketWriteCallBack
def _flag2idx(self, flag): (source)
Convert a kCFSocket... constant to an index into the read/write state list (_READ or _WRITE) (the 4th element of the value of self._fdmap).
ParametersflagkCFSocketReadCallBack or kCFSocketWriteCallBack
Returns_READ or _WRITE
def _unwatchFD(self, fd, descr, flag): (source)
Unregister a file descriptor with the CFRunLoop, or modify its state so that it's listening for only one notification (read or write) as opposed to both; used to implement removeReader and removeWriter.
Parametersfda file descriptor (type: int )
descran IReadDescriptor or IWriteDescriptor
flagkCFSocketWriteCallBack kCFSocketReadCallBack
def addReader(self, reader): (source)
Implement IReactorFDSet.addReader.
def addWriter(self, writer): (source)
Implement IReactorFDSet.addWriter.
def removeReader(self, reader): (source)
Implement IReactorFDSet.removeReader.
def removeWriter(self, writer): (source)
Implement IReactorFDSet.removeWriter.
def removeAll(self): (source)
Implement IReactorFDSet.removeAll.
def getReaders(self): (source)
Implement IReactorFDSet.getReaders.
def getWriters(self): (source)
Implement IReactorFDSet.getWriters.
def _moveCallLaterSooner(self, tple): (source)
Override PosixReactorBase's implementation of IDelayedCall.reset so that it will immediately reschedule. Normally _moveCallLaterSooner depends on the fact that runUntilCurrent is always run before the mainloop goes back to sleep, so this forces it to immediately recompute how long the loop needs to stay asleep.
def mainLoop(self): (source)
Run the runner (CFRunLoopRun or something that calls it), which runs the run loop until crash() is called.
def _scheduleSimulate(self, force=False): (source)
Schedule a call to self.runUntilCurrent. This will cancel the currently scheduled call if it is already scheduled.
ParametersforceEven if there are no timed calls, make sure that runUntilCurrent runs immediately (in a 0-seconds-from-now {CFRunLoopTimer}). This is necessary for calls which need to trigger behavior of runUntilCurrent other than running timed calls, such as draining the thread call queue or calling crash() when the appropriate flags are set. (type: bool )
def callLater(self, _seconds, _f, *args, **kw): (source)
Implement IReactorTime.callLater.
def stop(self): (source)
Implement IReactorCore.stop.
def crash(self): (source)
Implement IReactorCore.crash
def _stopNow(self): (source)
Immediately stop the CFRunLoop (which must be running!).
def iterate(self, delay=0): (source)
Emulate the behavior of iterate() for things that want to call it, by letting the loop run for a little while and then scheduling a timed call to exit it.
API Documentation for Twisted, generated by pydoctor at 2011-10-27 16:27:37.