_service.py 文件源码

def _on_signal_received(self, sig):
        # Code below must not block to return to select.select() and catch
        # next signals
        if sig == _utils.SIGALRM:
            self._alarm()
        elif sig == signal.SIGTERM:
            LOG.info('Caught SIGTERM signal, '
                     'graceful exiting of service %s' % self.title)

            if self.service.graceful_shutdown_timeout > 0:
                if os.name == "posix":
                    signal.alarm(self.service.graceful_shutdown_timeout)
                else:
                    threading.Timer(self.service.graceful_shutdown_timeout,
                                    self._alarm).start()
            _utils.spawn(self.service._terminate)
        elif sig == _utils.SIGHUP:
            _utils.spawn(self.service._reload)