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How to use _check_pid_for_dark_mark method in autotest

Best Python code snippet using autotest_python

drone_utility.py

Source:drone_utility.py

...78            utils.run(build_extern_cmd)79    def _warn(self, warning):80        self.warnings.append(warning)81    @staticmethod82    def _check_pid_for_dark_mark(pid, open=open):83        try:84            env_file = open('/proc/%s/environ' % pid, 'rb')85        except EnvironmentError:86            return False87        try:88            env_data = env_file.read()89        finally:90            env_file.close()91        return DARK_MARK_ENVIRONMENT_VAR in env_data92    _PS_ARGS = ('pid', 'pgid', 'ppid', 'comm', 'args')93    @classmethod94    def _get_process_info(cls):95        """96        :return: A generator of dicts with cls._PS_ARGS as keys and97                string values each representing a running process.98        """99        ps_proc = subprocess.Popen(100            ['/bin/ps', 'x', '-o', ','.join(cls._PS_ARGS)],101            stdout=subprocess.PIPE)102        ps_output = ps_proc.communicate()[0]103        # split each line into the columns output by ps104        split_lines = [line.split(None, 4) for line in ps_output.splitlines()]105        return (dict(itertools.izip(cls._PS_ARGS, line_components))106                for line_components in split_lines)107    def _refresh_processes(self, command_name, open=open,108                           site_check_parse=None):109        if type(command_name) == str:110            command_name = [command_name]111        # The open argument is used for test injection.112        check_mark = settings.get_value('SCHEDULER',113                                        'check_processes_for_dark_mark',114                                        bool, False)115        processes = []116        for info in self._get_process_info():117            is_parse = (site_check_parse and site_check_parse(info))118            if info['comm'] in command_name or is_parse:119                if (check_mark and not120                        self._check_pid_for_dark_mark(info['pid'], open=open)):121                    self._warn('%(comm)s process pid %(pid)s has no '122                               'dark mark; ignoring.' % info)123                    continue124                processes.append(info)125        return processes126    def _read_pidfiles(self, pidfile_paths):127        pidfiles = {}128        for pidfile_path in pidfile_paths:129            if not os.path.exists(pidfile_path):130                continue131            try:132                file_object = open(pidfile_path, 'r')133                pidfiles[pidfile_path] = file_object.read()134                file_object.close()...

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