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Merge pull request #8177 from ThomasWaldmann/debounce-sigint-master
fix Ctrl-C / SIGINT behaviour for pyinstaller-made binaries, fixes #8155 (master)
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commit
7dd0403bd3
@ -195,6 +195,8 @@ def __init__(self):
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self._action_triggered = False
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self._action_done = False
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self.ctx = signal_handler("SIGINT", self.handler)
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self.debounce_interval = 20000000 # ns
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self.last = None # monotonic time when we last processed SIGINT
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def __bool__(self):
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# this will be True (and stay True) after the first Ctrl-C/SIGINT
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@ -215,10 +217,22 @@ def action_completed(self):
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self._action_done = True
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def handler(self, sig_no, stack):
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# handle the first ctrl-c / SIGINT.
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self.__exit__(None, None, None)
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self._sig_int_triggered = True
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self._action_triggered = True
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# Ignore a SIGINT if it comes too quickly after the last one, e.g. because it
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# was caused by the same Ctrl-C key press and a parent process forwarded it to us.
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# This can easily happen for the pyinstaller-made binaries because the bootloader
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# process and the borg process are in same process group (see #8155), but maybe also
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# under other circumstances.
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now = time.monotonic_ns()
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if self.last is None: # first SIGINT
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self.last = now
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self._sig_int_triggered = True
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self._action_triggered = True
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elif now - self.last >= self.debounce_interval: # second SIGINT
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# restore the original signal handler for the 3rd+ SIGINT -
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# this implies that this handler here loses control!
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self.__exit__(None, None, None)
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# handle 2nd SIGINT like the default handler would do it:
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raise KeyboardInterrupt # python docs say this might show up at an arbitrary place.
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def __enter__(self):
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self.ctx.__enter__()
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