def installWaker(self):
        if not self.waker:
            self.waker = _Waker(self)
            self._internalReaders.add(self.waker)
            self.addReader(self.waker)
Install a `waker' to allow threads and signals to wake up the IO thread.
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/internet/posixbase.py/PosixReactorBase.installWaker