[3.6] bpo-34263 Cap timeout submitted to epoll/select etc. to one day. (GH-8532) (GH-8587)
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@ -56,6 +56,9 @@ _FATAL_ERROR_IGNORE = (BrokenPipeError,
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_HAS_IPv6 = hasattr(socket, 'AF_INET6')
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# Maximum timeout passed to select to avoid OS limitations
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MAXIMUM_SELECT_TIMEOUT = 24 * 3600
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def _format_handle(handle):
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cb = handle._callback
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@ -1378,7 +1381,7 @@ class BaseEventLoop(events.AbstractEventLoop):
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elif self._scheduled:
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# Compute the desired timeout.
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when = self._scheduled[0]._when
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timeout = max(0, when - self.time())
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timeout = min(max(0, when - self.time()), MAXIMUM_SELECT_TIMEOUT)
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if self._debug and timeout != 0:
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t0 = self.time()
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@ -0,0 +1,2 @@
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asyncio's event loop will not pass timeouts longer than one day to
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epoll/select etc.
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