def start(self):
        import newcron
        import logging
        import logging.config
        from settings import global_settings
        from fileutils import abspath
        from os.path import exists, join
        
        self.log('web2py Cron service starting')
        if not self.chdir():
            return
        if len(sys.argv) == 2:
            opt_mod = sys.argv[1]
        else:
            opt_mod = self._exe_args_
        options = __import__(opt_mod, [], [], '')
        logpath = abspath(join(options.folder, "logging.conf"))
        
        if exists(logpath):
            logging.config.fileConfig(logpath)
        else:
            logging.basicConfig()
        logger = logging.getLogger("web2py.cron")
        global_settings.web2py_crontype = 'external'
        if options.scheduler:   # -K
            apps = [app.strip() for app in options.scheduler.split(
                    ',') if check_existent_app(options, app.strip())]
        else:
            apps = None

        misfire_gracetime = float(options.misfire_gracetime) if 'misfire_gracetime' in dir(options) else 0.0
        logger.info('Starting Window cron service with %0.2f secs gracetime.' % misfire_gracetime)
        self._started = True
        wait_full_min = lambda: 60 - time.time() % 60
        while True:
            try:
                if wait_full_min() >= misfire_gracetime: # an offset of max. 5 secs before full minute (e.g. time.sleep(60) == 58.99 secs)
                    self.extcron = newcron.extcron(options.folder, apps=apps)
                    self.extcron.start()
                    time.sleep(wait_full_min())
                else:
                    logger.debug('time.sleep() offset detected: %0.3f s' % wait_full_min())
                    while wait_full_min() <= misfire_gracetime:
                        pass
                if apps != None:
                    break
                if not self._started:
                    break
            except Exception, ex:
                self.extcron = None
                self.log_error('%s, restarting service.' % ex)
                logger.exception('Exception! Restarting Windows cron service.' % ex)
                self.start()

 def start(self):
     import newcron
     import global_settings
     self.log('web2py server starting')
     if not self.chdir():
         return
     if len(sys.argv) == 2:
         opt_mod = sys.argv[1]
     else:
         opt_mod = self._exe_args_
     options = __import__(opt_mod, [], [], '')
     global_settings.global_settings.web2py_crontype = 'external'
     if options.scheduler:   # -K                         
         apps = [app.strip() for app in options.scheduler.split(
                 ',') if check_existent_app(options, app.strip())]
     else:
         apps = None
     self.extcron = newcron.extcron(options.folder, apps=apps)
     try:
         self.extcron.start()
     except:
         # self.server.stop()
         self.extcron = None
         raise

def start(cron = True):
    """ Start server  """

    # ## get command line arguments

    (options, args) = console()

    print ProgramName
    print ProgramAuthor
    print ProgramVersion

    from sql import drivers
    print 'Database drivers available: %s' % ', '.join(drivers)


    # ## if -L load options from options.config file
    if options.config:
        try:
            options2 = __import__(options.config, [], [], '')
        except Exception:
            try:
                # Jython doesn't like the extra stuff
                options = __import__(options.config)
            except Exception:
                print 'Cannot import config file [%s]' % options.config
                sys.exit(1)
        for key in dir(options2):
            if hasattr(options,key):
                setattr(options,key,getattr(options2,key))

    # ## if -T run doctests (no cron)
    if hasattr(options,'test') and options.test:
        test(options.test, verbose=options.verbose)
        return

    # ## if -S start interactive shell (also no cron)
    if options.shell:
        sys.args = options.args
        run(options.shell, plain=options.plain,
            import_models=options.import_models, startfile=options.run)
        return

    # ## if -C start cron run (extcron) and exit
    # ## if -N or not cron disable cron in this *process*
    # ## if --softcron use softcron
    # ## use hardcron in all ther cases
    if options.extcron:
        print 'Starting extcron...'
        settings.web2py_crontype = 'external'
        extcron = newcron.extcron(os.getcwd())
        extcron.start()
        extcron.join()
        return
    elif cron and not options.nocron and options.softcron:
        print 'Using softcron (but this is not very efficient)'
        settings.web2py_crontype = 'soft'
    elif cron and not options.nocron:
        print 'Starting hardcron...'
        settings.web2py_crontype = 'hard'
        newcron.hardcron(os.getcwd()).start()

    # ## if -W install/start/stop web2py as service
    if options.winservice:
        if os.name == 'nt':
            web2py_windows_service_handler(['', options.winservice],
                    options.config)
        else:
            print 'Error: Windows services not supported on this platform'
            sys.exit(1)
        return

    # ## if no password provided and havetk start Tk interface
    # ## or start interface if we want to put in taskbar (system tray)

    try:
        options.taskbar
    except:
        options.taskbar = False

    if options.taskbar and os.name != 'nt':
        print 'Error: taskbar not supported on this platform'
        sys.exit(1)

    root = None

    if not options.nogui:
        try:
            import tkMessageBox
            import Tkinter
            havetk = True
        except ImportError:
            logger.warn('GUI not available because Tk library is not installed')
            havetk = False

        if options.password == '<ask>' and havetk or options.taskbar and havetk:
            try:
                root = Tkinter.Tk()
            except:
                pass

#.........这里部分代码省略.........

def start(cron=True):
    """ Start server  """

    # ## get command line arguments

    (options, args) = console()

    if not options.nobanner:
        print ProgramName
        print ProgramAuthor
        print ProgramVersion

    from dal import drivers
    if not options.nobanner:
        print 'Database drivers available: %s' % ', '.join(drivers)


    # ## if -L load options from options.config file
    if options.config:
        try:
            options2 = __import__(options.config, {}, {}, '')
        except Exception:
            try:
                # Jython doesn't like the extra stuff
                options2 = __import__(options.config)
            except Exception:
                print 'Cannot import config file [%s]' % options.config
                sys.exit(1)
        for key in dir(options2):
            if hasattr(options,key):
                setattr(options,key,getattr(options2,key))

    if False and not os.path.exists('logging.conf') and \
            os.path.exists('logging.example.conf'):
        import shutil
        sys.stdout.write("Copying logging.conf.example to logging.conf ... ")
        shutil.copyfile('logging.example.conf', 'logging.conf')
        sys.stdout.write("OK\n")

    # ## if -T run doctests (no cron)
    if hasattr(options,'test') and options.test:
        test(options.test, verbose=options.verbose)
        return

    # ## if -S start interactive shell (also no cron)
    if options.shell:
        if not options.args is None:
            sys.argv[:] = options.args
        run(options.shell, plain=options.plain, bpython=options.bpython,
            import_models=options.import_models, startfile=options.run)
        return

    # ## if -C start cron run (extcron) and exit
    # ##    -K specifies optional apps list (overloading scheduler)
    if options.extcron:
        logger.debug('Starting extcron...')
        global_settings.web2py_crontype = 'external'
        if options.scheduler:   # -K
            apps = [app.strip() for app in options.scheduler.split(',') if check_existent_app(options, app.strip())]
        else:
            apps = None
        extcron = newcron.extcron(options.folder, apps=apps)
        extcron.start()
        extcron.join()
        return

    # ## if -K
    if options.scheduler and not options.with_scheduler:
        try:
            start_schedulers(options)
        except KeyboardInterrupt:
            pass
        return


    # ## if -N or not cron disable cron in this *process*
    # ## if --softcron use softcron
    # ## use hardcron in all other cases
    if cron and not options.nocron and options.softcron:
        print 'Using softcron (but this is not very efficient)'
        global_settings.web2py_crontype = 'soft'
    elif cron and not options.nocron:
        logger.debug('Starting hardcron...')
        global_settings.web2py_crontype = 'hard'
        newcron.hardcron(options.folder).start()

    # ## if -W install/start/stop web2py as service
    if options.winservice:
        if os.name == 'nt':
            web2py_windows_service_handler(['', options.winservice],
                    options.config)
        else:
            print 'Error: Windows services not supported on this platform'
            sys.exit(1)
        return

    # ## if no password provided and havetk start Tk interface
    # ## or start interface if we want to put in taskbar (system tray)

    try:
#.........这里部分代码省略.........

def start(cron=True):
    """ Starts server  """

    # ## get command line arguments

    (options, args) = console()

    if not options.nobanner:
        print ProgramName
        print ProgramAuthor
        print ProgramVersion

    from pydal.drivers import DRIVERS
    if not options.nobanner:
        print 'Database drivers available: %s' % ', '.join(DRIVERS)

    # ## if -L load options from options.config file
    if options.config:
        try:
            options2 = __import__(options.config, {}, {}, '')
        except Exception:
            try:
                # Jython doesn't like the extra stuff
                options2 = __import__(options.config)
            except Exception:
                print 'Cannot import config file [%s]' % options.config
                sys.exit(1)
        for key in dir(options2):
            if hasattr(options, key):
                setattr(options, key, getattr(options2, key))

    logfile0 = os.path.join('examples', 'logging.example.conf')
    logfile1 = os.path.join(options.folder, 'logging.conf')
    if not os.path.exists(logfile1) and os.path.exists(logfile0):
        import shutil
        sys.stdout.write("Copying logging.conf.example to logging.conf ... ")
        shutil.copyfile(logfile0, logfile1)
        sys.stdout.write("OK\n")

    # ## if -T run doctests (no cron)
    if hasattr(options, 'test') and options.test:
        test(options.test, verbose=options.verbose)
        return

    # ## if -S start interactive shell (also no cron)
    if options.shell:
        if options.folder:
            os.chdir(options.folder)
        if not options.args is None:
            sys.argv[:] = options.args
        run(options.shell, plain=options.plain, bpython=options.bpython,
            import_models=options.import_models, startfile=options.run,
            cronjob=options.cronjob)
        return

    # ## if -C start cron run (extcron) and exit
    # ##    -K specifies optional apps list (overloading scheduler)
    if options.extcron:
        logger.debug('Starting extcron...')
        global_settings.web2py_crontype = 'external'
        if options.scheduler:   # -K
            apps = [app.strip() for app in options.scheduler.split(
                ',') if check_existent_app(options, app.strip())]
        else:
            apps = None
        extcron = newcron.extcron(options.folder, apps=apps)
        extcron.start()
        extcron.join()
        return

    # ## if -K
    if options.scheduler and not options.with_scheduler:
        try:
            start_schedulers(options)
        except KeyboardInterrupt:
            pass
        return

    # ## if -H cron is enabled in this *process*
    # ## if --softcron use softcron
    # ## use hardcron in all other cases
    if cron and options.runcron and options.softcron:
        print 'Using softcron (but this is not very efficient)'
        global_settings.web2py_crontype = 'soft'
    elif cron and options.runcron:
        logger.debug('Starting hardcron...')
        global_settings.web2py_crontype = 'hard'
        newcron.hardcron(options.folder).start()

    # ## if no password provided and havetk start Tk interface
    # ## or start interface if we want to put in taskbar (system tray)

    try:
        options.taskbar
    except:
        options.taskbar = False

    if options.taskbar and os.name != 'nt':
        print 'Error: taskbar not supported on this platform'
        sys.exit(1)
#.........这里部分代码省略.........

def start(cron=True):
    """ Start server  """

    # ## get command line arguments

    (options, args) = console()

    if not options.nobanner:
        print ProgramName
        print ProgramAuthor
        print ProgramVersion

    from dal import DRIVERS

    if not options.nobanner:
        print "Database drivers available: %s" % ", ".join(DRIVERS)

    # ## if -L load options from options.config file
    if options.config:
        try:
            options2 = __import__(options.config, {}, {}, "")
        except Exception:
            try:
                # Jython doesn't like the extra stuff
                options2 = __import__(options.config)
            except Exception:
                print "Cannot import config file [%s]" % options.config
                sys.exit(1)
        for key in dir(options2):
            if hasattr(options, key):
                setattr(options, key, getattr(options2, key))

    if False and not os.path.exists("logging.conf") and os.path.exists("logging.example.conf"):
        import shutil

        sys.stdout.write("Copying logging.conf.example to logging.conf ... ")
        shutil.copyfile("logging.example.conf", "logging.conf")
        sys.stdout.write("OK\n")

    # ## if -T run doctests (no cron)
    if hasattr(options, "test") and options.test:
        test(options.test, verbose=options.verbose)
        return

    # ## if -S start interactive shell (also no cron)
    if options.shell:
        if not options.args is None:
            sys.argv[:] = options.args
        run(
            options.shell,
            plain=options.plain,
            bpython=options.bpython,
            import_models=options.import_models,
            startfile=options.run,
            cronjob=options.cronjob,
        )
        return

    # ## if -C start cron run (extcron) and exit
    # ##    -K specifies optional apps list (overloading scheduler)
    if options.extcron:
        logger.debug("Starting extcron...")
        global_settings.web2py_crontype = "external"
        if options.scheduler:  # -K
            apps = [app.strip() for app in options.scheduler.split(",") if check_existent_app(options, app.strip())]
        else:
            apps = None
        extcron = newcron.extcron(options.folder, apps=apps)
        extcron.start()
        extcron.join()
        return

    # ## if -K
    if options.scheduler and not options.with_scheduler:
        try:
            start_schedulers(options)
        except KeyboardInterrupt:
            pass
        return

    # ## if -W install/start/stop web2py as service
    if options.winservice:
        if os.name == "nt":
            try:
                from winservice import register_service_handler, Web2pyService

                register_service_handler(argv=["", options.winservice], opt_file=options.config, cls=Web2pyService)
            except ImportError:
                print "Error: Missing python module winservice"
                sys.exit(1)
        else:
            print "Error: Windows services not supported on this platform"
            sys.exit(1)
        return

    # ## if -H cron is enabled in this *process*
    # ## if --softcron use softcron
    # ## use hardcron in all other cases
    if cron and options.runcron and options.softcron:
        print "Using softcron (but this is not very efficient)"
#.........这里部分代码省略.........