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gh-106751: Optimize SelectSelector.select() for many iteration case (gh-106879)

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Dong-hee Na 2023-07-19 15:12:38 +09:00 committed by GitHub
parent 7513e2e7e4
commit e6f96cf9c6
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2 changed files with 10 additions and 10 deletions
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18
Lib/selectors.py
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@ -314,17 +314,15 @@ class SelectSelector(_BaseSelectorImpl):
r, w, _ = self._select(self._readers, self._writers, [], timeout) r, w, _ = self._select(self._readers, self._writers, [], timeout)
except InterruptedError: except InterruptedError:
return ready return ready
r = set(r) r = frozenset(r)
w = set(w) w = frozenset(w)
for fd in r | w: rw = r | w
events = 0 fd_to_key_get = self._fd_to_key.get
if fd in r: for fd in rw:
events |= EVENT_READ key = fd_to_key_get(fd)
if fd in w:
events |= EVENT_WRITE
key = self._fd_to_key.get(fd)
if key: if key:
events = ((fd in r and EVENT_READ)
| (fd in w and EVENT_WRITE))
ready.append((key, events & key.events)) ready.append((key, events & key.events))
return ready return ready

2
Misc/NEWS.d/next/Library/2023-07-19-10-45-24.gh-issue-106751.3HJ1of.rst Normal file
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@ -0,0 +1,2 @@
Optimize :meth:`SelectSelector.select` for many iteration case. Patch By
Dong-hee Na.