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gh-142414: Remove singleton design pattern in Lib/concurrent/interpreters/_crossinterp.py. #142577

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gh-142414: Remove singleton design pattern in Lib/concurrent/interpreters/_crossinterp.py. #142577

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d5060f7
Add register_unbound in _crossinterp.py and initialize it in _queues.py
note35 Dec 10, 2025
fb22cf6
Change to directly import UNBOUND.
note35 Dec 10, 2025
7c3245f
📜🤖 Added by blurb_it.
blurb-it[bot] Dec 10, 2025
32617a0
Update 2025-12-10-15-27-58.gh-issue-142414.zTHgP-.rst
note35 Dec 10, 2025
5730fd5
Update 2025-12-10-15-27-58.gh-issue-142414.zTHgP-.rst
note35 Dec 10, 2025
fcb3385
Add the repro test into test_queues.py.
note35 Dec 11, 2025
9a85aad
Address "./python -m test test_interpreters test_concurrent_futures.t…
note35 Dec 11, 2025
4a7e0ee
Update Misc/NEWS.d/next/Library/2025-12-10-15-27-58.gh-issue-142414.z…
note35 Dec 11, 2025
b6a206f
Remove picklable functions.
note35 Dec 11, 2025
b128769
Convert singleton object to a normal object.
note35 Dec 11, 2025
f74dcf9
Remove test_cross_interpreter_unbound_identity and picklabe object.
note35 Dec 12, 2025
d08f96e
Update Misc/NEWS.d/next/Library/2025-12-10-15-27-58.gh-issue-142414.z…
note35 Dec 12, 2025
2534bbf
Add a comment to explain why catch queues.QueueEmpty
note35 Dec 12, 2025
abb3dfe
Update Misc/NEWS.d/next/Library/2025-12-10-15-27-58.gh-issue-142414.z…
note35 Dec 12, 2025
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Address "./python -m test test_interpreters test_concurrent_futures.t… 
…est_interpreter_pool"
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@note35
note35 committed Dec 11, 2025
commit 9a85aadd107438b42cd1f267cc7a0718d380d339
11 changes: 11 additions & 0 deletions Lib/concurrent/interpreters/_crossinterp.py
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Expand Up @@ -68,6 +68,17 @@ def __repr__(self):
return f'{self._MODULE}.{self._NAME}'
# return f'interpreters._queues.UNBOUND'

def __hash__(self):
return hash((self._NAME, self._MODULE))

def __reduce__(self):
return self._NAME

def __eq__(self, other):
if other is self:
return True
return repr(other) == repr(self)


UNBOUND = object.__new__(UnboundItem)
UNBOUND_ERROR = object()
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2 changes: 2 additions & 0 deletions Lib/test/test_concurrent_futures/test_interpreter_pool.py
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Expand Up @@ -427,6 +427,8 @@ def run(taskid, ready, blocker):
ready.get(timeout=1) # blocking
except interpreters.QueueEmpty:
pass
except queues.QueueEmpty:
pass
else:
done += 1
pending -= done
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