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authorMartinAltmayer <martin.altmayer@web.de>2018-07-31 14:06:12 (GMT)
committerYury Selivanov <yury@magic.io>2018-07-31 14:06:12 (GMT)
commit944451cd8d3e897138f4b43569de13cd081ee251 (patch)
tree07230ba80372c8efb6da78ac994934ad73167291 /Lib/asyncio/base_events.py
parent9c18b1ae527346bc178250ad1ca07bffdacde5dd (diff)
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bpo-34263 Cap timeout submitted to epoll/select etc. to one day. (GH-8532)
Diffstat (limited to 'Lib/asyncio/base_events.py')
-rw-r--r--Lib/asyncio/base_events.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/Lib/asyncio/base_events.py b/Lib/asyncio/base_events.py
index 75989a7..78fe2a7 100644
--- a/Lib/asyncio/base_events.py
+++ b/Lib/asyncio/base_events.py
@@ -63,6 +63,9 @@ _FATAL_ERROR_IGNORE = (BrokenPipeError,
_HAS_IPv6 = hasattr(socket, 'AF_INET6')
+# Maximum timeout passed to select to avoid OS limitations
+MAXIMUM_SELECT_TIMEOUT = 24 * 3600
+
def _format_handle(handle):
cb = handle._callback
@@ -1708,7 +1711,7 @@ class BaseEventLoop(events.AbstractEventLoop):
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()