<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def on_sigabrt(self, signal_unused, frame_unused):
 """Stop the HTTP Server and IO Loop, shutting down the process :param int signal_unused: Unused signal number :param frame frame_unused: Unused frame the signal was caught in """

        LOGGER.info('Stopping HTTP Server and IOLoop')
        self.http_server.stop()
        self.ioloop.stop()