upstream/ipython Files · IPython/qt/inprocess.py

Shut down kernels in parallel...

Shut down kernels in parallel When stopping the notebook server, it currently sends a shutdown request to each kernel and then waits for the process to finish. This can be slow if you have several kernels running. This makes it issues all the shutdown requests before waiting on the processes, so shutdown happens in parallel. KernelManager (and MultiKernelManager) gain three new public API methods to allow this: * request_shutdown (promoted from a private method) * wait_shutdown (refactored out of shutdown_kernel) * cleanup (refactored out of shutdown_kernel)

Fernando Perez - - Load All Authors

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      """ Defines an in-process KernelManager with signals and slots.

      """

      # Local imports.

      from IPython.kernel.inprocess import (

          InProcessShellChannel, InProcessIOPubChannel, InProcessStdInChannel,

          InProcessHBChannel, InProcessKernelClient, InProcessKernelManager,

      )

      from IPython.utils.traitlets import Type

      from .kernel_mixins import (

          QtShellChannelMixin, QtIOPubChannelMixin,

          QtStdInChannelMixin, QtHBChannelMixin, QtKernelClientMixin,

          QtKernelManagerMixin,

      )

      class QtInProcessShellChannel(QtShellChannelMixin, InProcessShellChannel):

          pass

      class QtInProcessIOPubChannel(QtIOPubChannelMixin, InProcessIOPubChannel):

          pass

      class QtInProcessStdInChannel(QtStdInChannelMixin, InProcessStdInChannel):

          pass

      class QtInProcessHBChannel(QtHBChannelMixin, InProcessHBChannel):

          pass

      class QtInProcessKernelClient(QtKernelClientMixin, InProcessKernelClient):

          """ An in-process KernelManager with signals and slots.

          """

          iopub_channel_class = Type(QtInProcessIOPubChannel)

          shell_channel_class = Type(QtInProcessShellChannel)

          stdin_channel_class = Type(QtInProcessStdInChannel)

          hb_channel_class = Type(QtInProcessHBChannel)

      class QtInProcessKernelManager(QtKernelManagerMixin, InProcessKernelManager):

          client_class = __module__ + '.QtInProcessKernelClient'

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				""" Defines an in-process KernelManager with signals and slots.
				"""

				# Local imports.
				from IPython.kernel.inprocess import (
				InProcessShellChannel, InProcessIOPubChannel, InProcessStdInChannel,
				InProcessHBChannel, InProcessKernelClient, InProcessKernelManager,
				)

				from IPython.utils.traitlets import Type
				from .kernel_mixins import (
				QtShellChannelMixin, QtIOPubChannelMixin,
				QtStdInChannelMixin, QtHBChannelMixin, QtKernelClientMixin,
				QtKernelManagerMixin,
				)


				class QtInProcessShellChannel(QtShellChannelMixin, InProcessShellChannel):
				pass

				class QtInProcessIOPubChannel(QtIOPubChannelMixin, InProcessIOPubChannel):
				pass

				class QtInProcessStdInChannel(QtStdInChannelMixin, InProcessStdInChannel):
				pass

				class QtInProcessHBChannel(QtHBChannelMixin, InProcessHBChannel):
				pass

				class QtInProcessKernelClient(QtKernelClientMixin, InProcessKernelClient):
				""" An in-process KernelManager with signals and slots.
				"""

				iopub_channel_class = Type(QtInProcessIOPubChannel)
				shell_channel_class = Type(QtInProcessShellChannel)
				stdin_channel_class = Type(QtInProcessStdInChannel)
				hb_channel_class = Type(QtInProcessHBChannel)

				class QtInProcessKernelManager(QtKernelManagerMixin, InProcessKernelManager):
				client_class = __module__ + '.QtInProcessKernelClient'