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How to use _handle_pidfile_error method in autotest

Best Python code snippet using autotest_python

pidfile_monitor.py

...81        if contents.is_invalid():82            self._state = drone_manager.PidfileContents()83            raise self._PidfileException(contents)84        self._state = contents85    def _handle_pidfile_error(self, error, message=''):86        self.on_lost_process(self._state.process)87    def _get_pidfile_info_helper(self):88        if self.lost_process:89            return90        self._read_pidfile()91        if self._state.process is None:92            self._handle_no_process()93            return94        if self._state.exit_status is None:95            # double check whether or not autoserv is running96            if self._drone_manager.is_process_running(self._state.process):97                return98            # pid but no running process - maybe process *just* exited99            self._read_pidfile(use_second_read=True)100            if self._state.exit_status is None:101                # autoserv exited without writing an exit code102                # to the pidfile103                self._handle_pidfile_error(104                    'autoserv died without writing exit code')105    def _get_pidfile_info(self):106        """\107        After completion, self._state will contain:108         pid=None, exit_status=None if autoserv has not yet run109         pid!=None, exit_status=None if autoserv is running110         pid!=None, exit_status!=None if autoserv has completed111        """112        try:113            self._get_pidfile_info_helper()114        except self._PidfileException, exc:115            self._handle_pidfile_error('Pidfile error', traceback.format_exc())116    def _handle_no_process(self):117        """\118        Called when no pidfile is found or no pid is in the pidfile.119        """120        if time.time() - self._start_time > _get_pidfile_timeout_secs():121            # If we aborted the process, and we find that it has exited without122            # writing a pidfile, then it's because we killed it, and thus this123            # isn't a surprising situation.124            if not self._killed:125                metrics.Counter('chromeos/autotest/errors/scheduler/no_pidfile'126                                ).increment()127            else:128                logging.warning("%s didn't exit after SIGTERM", self.pidfile_id)129            self.on_lost_process()...

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