8000 gh-133454: Reduce the number of threads in test_racing_getbuf_and_releasebuf by serhiy-storchaka · Pull Request #133458 · python/cpython · GitHub
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gh-133454: Reduce the number of threads in test_racing_getbuf_and_releasebuf #133458

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Merged
merged 1 commit into from
May 23, 2025
+11 −9
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gh-133454: Reduce the number of threads in test_racing_getbuf_and_releasebuf #133458

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20 changes: 11 additions & 9 deletions Lib/test/test_memoryview.py
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Original file line number Diff line number Diff line change
Expand Up @@ -743,19 +743,21 @@ def test_racing_getbuf_and_releasebuf(self):
from multiprocessing.managers import SharedMemoryManager
except ImportError:
self.skipTest("Test requires multiprocessing")
from threading import Thread
from threading import Thread, Event

n = 100
start = Event()
with SharedMemoryManager() as smm:
obj = smm.ShareableList(range(100))
threads = []
for _ in range(n):
# Issue gh-127085, the `ShareableList.count` is just a convenient way to mess the `exports`
# counter of `memoryview`, this issue has no direct relation with `ShareableList`.
threads.append(Thread(target=obj.count, args=(1,)))

def test():
# Issue gh-127085, the `ShareableList.count` is just a
# convenient way to mess the `exports` counter of `memoryview`,
# this issue has no direct relation with `ShareableList`.
start.wait(support.SHORT_TIMEOUT)
for i in range(10):
obj.count(1)
threads = [Thread(target=test) for _ in range(10)]
with threading_helper.start_threads(threads):
pass
start.set()

del obj

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