environment/lib/python2.7/site-packages/IPython/parallel/apps/ipclusterapp.py
def start(self):
        """Start the app for the start subcommand."""
        # First see if the cluster is already running
        try:
            pid = self.get_pid_from_file()
        except PIDFileError:
            pass
        else:
            if self.check_pid(pid):
                self.log.critical(
                    'Cluster is already running with [pid=%s]. '
                    'use "ipcluster stop" to stop the cluster.' % pid
                )
                # Here I exit with a unusual exit status that other processes
                # can watch for to learn how I existed.
                self.exit(ALREADY_STARTED)
            else:
                self.remove_pid_file()


        # Now log and daemonize
        self.log.info(
            'Starting ipcluster with [daemon=%r]' % self.daemonize
        )
        # TODO: Get daemonize working on Windows or as a Windows Server.
        if self.daemonize:
            if os.name=='posix':
                daemonize()

        dc = ioloop.DelayedCallback(self.start_controller, 0, self.loop)
        dc.start()
        dc = ioloop.DelayedCallback(self.start_engines, 1000*self.delay, self.loop)
        dc.start()
        # Now write the new pid file AFTER our new forked pid is active.
        self.write_pid_file()
        try:
            self.loop.start()
        except KeyboardInterrupt:
            pass
        except zmq.ZMQError as e:
            if e.errno == errno.EINTR:
                pass
            else:
                raise
        finally:
            self.remove_pid_file()
def start(self):
        # First see if the cluster is already running
        try:
            pid = self.get_pid_from_file()
        except PIDFileError:
            pass
        else:
            if self.check_pid(pid):
                self.log.critical(
                    'Cluster is already running with [pid=%s]. '
                    'use "ipcluster stop" to stop the cluster.' % pid
                )
                # Here I exit with a unusual exit status that other processes
                # can watch for to learn how I existed.
                self.exit(ALREADY_STARTED)
            else:
                self.remove_pid_file()


        # Now log and daemonize
        self.log.info(
            'Starting ipcluster with [daemon=%r]' % self.daemonize
        )
        # TODO: Get daemonize working on Windows or as a Windows Server.
        if self.daemonize:
            if os.name=='posix':
                daemonize()

        dc = ioloop.DelayedCallback(self.start_controller, 0, self.loop)
        dc.start()
        dc = ioloop.DelayedCallback(self.start_engines, 1000*self.delay, self.loop)
        dc.start()
        # Now write the new pid file AFTER our new forked pid is active.
        self.write_pid_file()
        try:
            self.loop.start()
        except KeyboardInterrupt:
            pass
        except zmq.ZMQError as e:
            if e.errno == errno.EINTR:
                pass
            else:
                raise
        finally:
            self.remove_pid_file()
def start ( self ) : # First see if the cluster is already running try : pid = self . get_pid_from_file ( ) except PIDFileError : pass else : if self . check_pid ( pid ) : self . log . critical ( 'Cluster is already running with [pid=%s]. ' 'use "ipcluster stop" to stop the cluster.' % pid ) # Here I exit with a unusual exit status that other processes # can watch for to learn how I existed. self . exit ( ALREADY_STARTED ) else : self . remove_pid_file ( ) # Now log and daemonize self . log . info ( 'Starting ipcluster with [daemon=%r]' % self . daemonize ) # TODO: Get daemonize working on Windows or as a Windows Server. if self . daemonize : if os . name == 'posix' : daemonize ( ) dc = ioloop . DelayedCallback ( self . start_controller , 0 , self . loop ) dc . start ( ) dc = ioloop . DelayedCallback ( self . start_engines , 1000 * self . delay , self . loop ) dc . start ( ) # Now write the new pid file AFTER our new forked pid is active. self . write_pid_file ( ) try : self . loop . start ( ) except KeyboardInterrupt : pass except zmq . ZMQError as e : if e . errno == errno . EINTR : pass else : raise finally : self . remove_pid_file ( )
Start the app for the start subcommand.
Start the app for the start subcommand .