mirror of https://github.com/python/cpython
39 lines
1.1 KiB
Python
39 lines
1.1 KiB
Python
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import signal
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import weakref
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__unittest = True
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class _InterruptHandler(object):
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def __init__(self, default_handler):
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self.called = False
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self.default_handler = default_handler
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def __call__(self, signum, frame):
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installed_handler = signal.getsignal(signal.SIGINT)
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if installed_handler is not self:
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# if we aren't the installed handler, then delegate immediately
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# to the default handler
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self.default_handler(signum, frame)
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if self.called:
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self.default_handler(signum, frame)
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self.called = True
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for result in _results.keys():
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result.stop()
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_results = weakref.WeakKeyDictionary()
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def registerResult(result):
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_results[result] = 1
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def removeResult(result):
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return bool(_results.pop(result, None))
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_interrupt_handler = None
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def installHandler():
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global _interrupt_handler
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if _interrupt_handler is None:
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default_handler = signal.getsignal(signal.SIGINT)
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_interrupt_handler = _InterruptHandler(default_handler)
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signal.signal(signal.SIGINT, _interrupt_handler)
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