upstream/ipython Files · IPython/utils/localinterfaces.py

Prevent qtconsole frontend freeze on lots of output....

Prevent qtconsole frontend freeze on lots of output. The output from the kernel is now clipped to last `buffer_size` before displaying and a timer is used to flush the pending output text instead of attempting to display text on every stream output from kernel. The timer interval is adjusted based on actual time taken to append a screenful of text to widget. This throttles the widget repaints and avoids choking the Qt event loop leaving time to handle other Qt events. Test cases: In [1]: for i in xrange(1000000): print i In [2]: range(100000) Without this commit the first input causes the qtconsole frontend to freeze, not responding to `Ctrl+C`.

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             localinterfaces.py
        
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      """Simple utility for building a list of local IPs using the socket module.

      This module defines two constants:

      LOCALHOST : The loopback interface, or the first interface that points to this

                  machine.  It will *almost* always be '127.0.0.1'

      LOCAL_IPS : A list of IP addresses, loopback first, that point to this machine.

      PUBLIC_IPS : A list of public IP addresses that point to this machine.

                   Use these to tell remote clients where to find you.

      """

      #-----------------------------------------------------------------------------

      #  Copyright (C) 2010-2011  The IPython Development Team

      #

      #  Distributed under the terms of the BSD License.  The full license is in

      #  the file COPYING, distributed as part of this software.

      #-----------------------------------------------------------------------------

      #-----------------------------------------------------------------------------

      # Imports

      #-----------------------------------------------------------------------------

      import socket

      from .data import uniq_stable

      #-----------------------------------------------------------------------------

      # Code

      #-----------------------------------------------------------------------------

      LOCAL_IPS = []

      try:

          LOCAL_IPS = socket.gethostbyname_ex('localhost')[2]

      except socket.error:

          pass

      PUBLIC_IPS = []

      try:

          hostname = socket.gethostname()

          PUBLIC_IPS = socket.gethostbyname_ex(hostname)[2]

          # try hostname.local, in case hostname has been short-circuited to loopback

          if not hostname.endswith('.local') and all(ip.startswith('127') for ip in PUBLIC_IPS):

              PUBLIC_IPS = socket.gethostbyname_ex(socket.gethostname() + '.local')[2]

      except socket.error:

          pass

      else:

          PUBLIC_IPS = uniq_stable(PUBLIC_IPS)

          LOCAL_IPS.extend(PUBLIC_IPS)

      # include all-interface aliases: 0.0.0.0 and ''

      LOCAL_IPS.extend(['0.0.0.0', ''])

      LOCAL_IPS = uniq_stable(LOCAL_IPS)

      LOCALHOST = LOCAL_IPS[0]

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				"""Simple utility for building a list of local IPs using the socket module.
				This module defines two constants:

				LOCALHOST : The loopback interface, or the first interface that points to this
				machine. It will almost always be '127.0.0.1'

				LOCAL_IPS : A list of IP addresses, loopback first, that point to this machine.

				PUBLIC_IPS : A list of public IP addresses that point to this machine.
				Use these to tell remote clients where to find you.
				"""
				#-----------------------------------------------------------------------------
				# Copyright (C) 2010-2011 The IPython Development Team
				#
				# Distributed under the terms of the BSD License. The full license is in
				# the file COPYING, distributed as part of this software.
				#-----------------------------------------------------------------------------

				#-----------------------------------------------------------------------------
				# Imports
				#-----------------------------------------------------------------------------

				import socket

				from .data import uniq_stable

				#-----------------------------------------------------------------------------
				# Code
				#-----------------------------------------------------------------------------

				LOCAL_IPS = []
				try:
				LOCAL_IPS = socket.gethostbyname_ex('localhost')[2]
				except socket.error:
				pass

				PUBLIC_IPS = []
				try:
				hostname = socket.gethostname()
				PUBLIC_IPS = socket.gethostbyname_ex(hostname)[2]
				# try hostname.local, in case hostname has been short-circuited to loopback
				if not hostname.endswith('.local') and all(ip.startswith('127') for ip in PUBLIC_IPS):
				PUBLIC_IPS = socket.gethostbyname_ex(socket.gethostname() + '.local')[2]
				except socket.error:
				pass
				else:
				PUBLIC_IPS = uniq_stable(PUBLIC_IPS)
				LOCAL_IPS.extend(PUBLIC_IPS)

				# include all-interface aliases: 0.0.0.0 and ''
				LOCAL_IPS.extend(['0.0.0.0', ''])

				LOCAL_IPS = uniq_stable(LOCAL_IPS)

				LOCALHOST = LOCAL_IPS[0]