upstream/ipython Files · IPython/kernel/blocking/client.py

Backport PR : ZMQ heartbeat channel: catch EINTR exceptions and continue....

Backport PR : ZMQ heartbeat channel: catch EINTR exceptions and continue. The zmq heartbeat channel exits when it encounters an "Interrupted system call", thereby causing the qtconsole to report that it is not responding, despite the console working perfectly fine. Observed in a large Qt application embedding the ipython qtconsole in KDE desktop. Fixes Inspired by

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             client.py
        
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      """Implements a fully blocking kernel client.

      Useful for test suites and blocking terminal interfaces.

      """

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

      #  Copyright (C) 2013 The IPython Development Team

      #

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

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

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

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

      # Imports

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

      from IPython.utils.traitlets import Type

      from IPython.kernel.client import KernelClient

      from .channels import (

          BlockingIOPubChannel, BlockingHBChannel,

          BlockingShellChannel, BlockingStdInChannel

      )

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

      # Blocking kernel manager

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

      class BlockingKernelClient(KernelClient):

          # The classes to use for the various channels

          shell_channel_class = Type(BlockingShellChannel)

          iopub_channel_class = Type(BlockingIOPubChannel)

          stdin_channel_class = Type(BlockingStdInChannel)

          hb_channel_class = Type(BlockingHBChannel)

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				"""Implements a fully blocking kernel client.

				Useful for test suites and blocking terminal interfaces.
				"""
				#-----------------------------------------------------------------------------
				# Copyright (C) 2013 The IPython Development Team
				#
				# Distributed under the terms of the BSD License. The full license is in
				# the file COPYING.txt, distributed as part of this software.
				#-----------------------------------------------------------------------------

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

				from IPython.utils.traitlets import Type
				from IPython.kernel.client import KernelClient
				from .channels import (
				BlockingIOPubChannel, BlockingHBChannel,
				BlockingShellChannel, BlockingStdInChannel
				)

				#-----------------------------------------------------------------------------
				# Blocking kernel manager
				#-----------------------------------------------------------------------------

				class BlockingKernelClient(KernelClient):

				# The classes to use for the various channels
				shell_channel_class = Type(BlockingShellChannel)
				iopub_channel_class = Type(BlockingIOPubChannel)
				stdin_channel_class = Type(BlockingStdInChannel)
				hb_channel_class = Type(BlockingHBChannel)