WinSignalHandler.py 文件源码

def consoleCtrlHandler(self, ctrlType):
        """Called by Windows on a new thread whenever a console control
           event is raised."""
        logger.debug("Windows control event %d" % ctrlType)
        sig = None
        if ctrlType == win32con.CTRL_C_EVENT:
            # user pressed Ctrl+C or someone did GenerateConsoleCtrlEvent
            sig = signal.SIGINT
        elif ctrlType == win32con.CTRL_BREAK_EVENT:
            sig = signal.SIGTERM
        elif ctrlType == win32con.CTRL_CLOSE_EVENT:
            # Console is about to die.
            # CTRL_CLOSE_EVENT gives us 5 seconds before displaying
            # the "End process" dialog - so treat as 'fast'
            sig = signal.SIGTERM
        elif ctrlType in (win32con.CTRL_LOGOFF_EVENT,
                          win32con.CTRL_SHUTDOWN_EVENT):
            # MSDN says:
            # "Note that this signal is received only by services.
            # Interactive applications are terminated at logoff, so
            # they are not present when the system sends this signal."
            # We can therefore ignore it (our service framework
            # manages shutdown in this case)
            pass
        else:
            logger.info("Unexpected windows control event %d" % ctrlType)
        # Call the signal handler - we could also do it asynchronously
        # by setting the relevant event, but we need it synchronous so
        # that we don't wake the select loop until after the shutdown
        # flags have been set.
        result = 0
        if sig is not None and sig in self.registry:
            self.signalHandler(sig, None)
            result = 1  # don't call other handlers.
        return result