# ``twisted`.`internet`.`base`.`_SignalReactorMixin``

class documentation

`class _SignalReactorMixin: (source)`

Known subclasses: `twisted.internet.iocpreactor.reactor.IOCPReactor`, `twisted.internet.posixbase.PosixReactorBase`

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Private mixin to manage signals: it installs signal handlers at start time, and define run method.

It can only be used mixed in with `ReactorBase`, and has to be defined first in the inheritance (so that method resolution order finds startRunning first).

Method | `mainLoop` | Undocumented
Method | `run` | Undocumented
Method | `startRunning` | Extend the base implementation in order to remember whether signal handlers should be installed later.
Method | `_handleSignals` | Install the signal handlers for the Twisted event loop.
Method | `_reallyStartRunning` | Extend the base implementation by also installing signal handlers, if `self._installSignalHandlers` is true.
Instance Variable | `_installSignalHandlers` | A flag which indicates whether any signal handlers will be installed during startup. This includes handlers for SIGCHLD to monitor child processes, and SIGINT, SIGTERM, and SIGBREAK to stop the reactor.

def mainLoop(self): (source)
overridden in `twisted.internet._threadedselect.ThreadedSelectReactor`, `twisted.internet.cfreactor.CFReactor`

Undocumented

def run(self, installSignalHandlers=True): (source)
overridden in `twisted.internet._glibbase.GlibReactorBase`, `twisted.internet._glibbase.PortableGlibReactorBase`, `twisted.internet._threadedselect.ThreadedSelectReactor`, `twisted.internet.asyncioreactor.AsyncioSelectorReactor`

Undocumented

Parameters
installSignalHandlers:`bool` | Undocumented

def startRunning(self, installSignalHandlers=True): (source)
Extend the base implementation in order to remember whether signal handlers should be installed later.

Parameters
installSignalHandlers:`bool` | A flag which, if set, indicates that handlers for a number of (implementation-defined) signals should be installed during startup.

def _handleSignals(self): (source)
overridden in `twisted.internet.posixbase.PosixReactorBase`
Install the signal handlers for the Twisted event loop.
def _reallyStartRunning(self): (source)
Extend the base implementation by also installing signal handlers, if `self._installSignalHandlers` is true.
_installSignalHandlers = (source)
A flag which indicates whether any signal handlers will be installed during startup. This includes handlers for SIGCHLD to monitor child processes, and SIGINT, SIGTERM, and SIGBREAK to stop the reactor.