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bpo-34263 Cap timeout submitted to epoll/select etc. to one day. #8532

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Merged
merged 3 commits into from
Jul 31, 2018
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bpo-34263 Cap timeout submitted to epoll/select etc. to one day. #8532

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2283c63
bpo-34263 Cap timeout submitted to epoll/select etc. to one day.
MartinAltmayer Jul 28, 2018
aa677d4
bpo-34263 Add news entry.
MartinAltmayer Jul 28, 2018
92623d2
bpo-34263 Remove now obsolete warning about maximum timeout.
MartinAltmayer Jul 28, 2018
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bpo-34263 Cap timeout submitted to epoll/select etc. to one day.
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@MartinAltmayer
MartinAltmayer committed Jul 28, 2018
commit 2283c6312d652f1e52315c95d02f9e25a2c2f439
5 changes: 4 additions & 1 deletion Lib/asyncio/base_events.py
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Expand Up @@ -63,6 +63,9 @@

_HAS_IPv6 = hasattr(socket, 'AF_INET6')

# Maximum timeout passed to select to avoid OS limitations
MAXIMUM_SELECT_TIMEOUT = 24 * 3600
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@vstinner vstinner Jul 30, 2018

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Hum, maybe it's better to make the constant private. What do you think @1st1?


def _format_handle(handle):
cb = handle._callback
Expand Down Expand Up @@ -1702,7 +1705,7 @@ def _run_once(self):
elif self._scheduled:
# Compute the desired timeout.
when = self._scheduled[0]._when
timeout = max(0, when - self.time())
timeout = min(max(0, when - self.time()), MAXIMUM_SELECT_TIMEOUT)

if self._debug and timeout != 0:
t0 = self.time()
Expand Down