##// END OF EJS Templates
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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r10323:e9200865
r11519:c7a90e39
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clientabc.py
81 lines | 2.0 KiB | text/x-python | PythonLexer
MinRK
remove leftover duplication from splitting clientabc/channelabc
r10323 """Abstract base class for kernel clients"""
MinRK
split KernelManager into KernelManager + KernelClient
r10285
#-----------------------------------------------------------------------------
# Copyright (C) 2013 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
#-----------------------------------------------------------------------------
# Standard library imports
import abc
#-----------------------------------------------------------------------------
MinRK
remove leftover duplication from splitting clientabc/channelabc
r10323 # Main kernel client class
MinRK
split KernelManager into KernelManager + KernelClient
r10285 #-----------------------------------------------------------------------------
class KernelClientABC(object):
"""KernelManager ABC.
The docstrings for this class can be found in the base implementation:
MinRK
remove leftover duplication from splitting clientabc/channelabc
r10323 `IPython.kernel.client.KernelClient`
MinRK
split KernelManager into KernelManager + KernelClient
r10285 """
__metaclass__ = abc.ABCMeta
@abc.abstractproperty
def kernel(self):
pass
@abc.abstractproperty
def shell_channel_class(self):
pass
@abc.abstractproperty
def iopub_channel_class(self):
pass
@abc.abstractproperty
def hb_channel_class(self):
pass
@abc.abstractproperty
def stdin_channel_class(self):
pass
#--------------------------------------------------------------------------
# Channel management methods
#--------------------------------------------------------------------------
@abc.abstractmethod
def start_channels(self, shell=True, iopub=True, stdin=True, hb=True):
pass
@abc.abstractmethod
def stop_channels(self):
pass
@abc.abstractproperty
def channels_running(self):
pass
@abc.abstractproperty
def shell_channel(self):
pass
@abc.abstractproperty
def iopub_channel(self):
pass
@abc.abstractproperty
def stdin_channel(self):
pass
@abc.abstractproperty
def hb_channel(self):
pass