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Merge pull request #3075 from ivanov/sigusr1-windows
check for SIGUSR1 before using it, closes #3074
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@ -550,7 +550,9 @@ class NotebookApp(BaseIPythonApplication):
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# but it will work
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signal.signal(signal.SIGINT, self._handle_sigint)
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signal.signal(signal.SIGTERM, self._signal_stop)
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signal.signal(signal.SIGUSR1, self._signal_info)
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if hasattr(signal, 'SIGUSR1'):
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# Windows doesn't support SIGUSR1
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signal.signal(signal.SIGUSR1, self._signal_info)
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if hasattr(signal, 'SIGINFO'):
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# only on BSD-based systems
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signal.signal(signal.SIGINFO, self._signal_info)
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