def main()

in monitor.py [0:0]
56 lines of code
14 McCabe index (conditional complexity)

def main(args=None):
    if not args:
        parser = argparse.ArgumentParser()
        set_argparser(parser)
        args = parser.parse_args()

    _damon.chk_permission()

    global target_is_cmd
    global cmd_pipe

    signal.signal(signal.SIGINT, sighandler)
    signal.signal(signal.SIGTERM, sighandler)

    target_is_cmd = False
    target = args.target
    target_fields = target.split()
    if target == 'paddr':
        pass
    elif not subprocess.call('which %s &> /dev/null' % target_fields[0],
            shell=True, executable='/bin/bash'):
        target_is_cmd = True
        cmd_pipe = subprocess.Popen(target, shell=True, executable='/bin/bash',
                stdout=subprocess.DEVNULL, stderr=subprocess.STDOUT)
        target = cmd_pipe.pid
    else:
        try:
            pid = int(target)
        except:
            print('invalid target \'%s\'' % target)
            exit(1)

    bindir = os.path.dirname(sys.argv[0])
    damo = os.path.join(bindir, 'damo')

    record_cmd = 'timeout %s %s record \"%s\"' % (args.delay, damo, target)

    if args.report_type == 'heats':
        report_cmd = '%s report heats --heatmap stdout --resol 10 80' % damo
    else:
        report_cmd = '%s report wss' % damo

    nr_reports = 0
    while not args.count or nr_reports < args.count:
        if target_is_cmd and cmd_pipe.poll() != None:
            break
        try:
            subprocess.check_output(record_cmd, shell=True,
                    stderr=subprocess.STDOUT, executable='/bin/bash')
        except subprocess.CalledProcessError as e:
            pass
        try:
            output = subprocess.check_output(report_cmd, shell=True,
                    executable='/bin/bash').decode()
            if args.report_type == 'heats':
                for line in output.strip().split('\n'):
                    if not line.startswith('#'):
                        print(line)
            else:
                print(output)
        except subprocess.CalledProcessError as e:
            break
        nr_reports += 1

    cleanup()