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"""A kernel manager with a tornado IOLoop"""
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#-----------------------------------------------------------------------------
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# Copyright (C) 2013 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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from __future__ import absolute_import
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import zmq
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from zmq.eventloop import ioloop
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from zmq.eventloop.zmqstream import ZMQStream
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from IPython.utils.traitlets import (
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Instance
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)
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from IPython.kernel.manager import KernelManager
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from .restarter import IOLoopKernelRestarter
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#-----------------------------------------------------------------------------
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# Code
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#-----------------------------------------------------------------------------
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def as_zmqstream(f):
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def wrapped(self, *args, **kwargs):
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socket = f(self, *args, **kwargs)
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return ZMQStream(socket, self.loop)
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return wrapped
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class IOLoopKernelManager(KernelManager):
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loop = Instance('zmq.eventloop.ioloop.IOLoop', allow_none=False)
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def _loop_default(self):
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return ioloop.IOLoop.instance()
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_restarter = Instance('IPython.kernel.ioloop.IOLoopKernelRestarter')
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def start_restarter(self):
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if self.autorestart and self.has_kernel:
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if self._restarter is None:
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self._restarter = IOLoopKernelRestarter(
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kernel_manager=self, loop=self.loop,
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parent=self, log=self.log
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)
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self._restarter.start()
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def stop_restarter(self):
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if self.autorestart:
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if self._restarter is not None:
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self._restarter.stop()
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connect_shell = as_zmqstream(KernelManager.connect_shell)
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connect_iopub = as_zmqstream(KernelManager.connect_iopub)
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connect_stdin = as_zmqstream(KernelManager.connect_stdin)
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connect_hb = as_zmqstream(KernelManager.connect_hb)
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