https://github.com/python/cpython/commit/3f56186a2d0e22f4f279b0cd071e871a312e2c67
commit: 3f56186a2d0e22f4f279b0cd071e871a312e2c67
branch: main
author: Neil Schemenauer <[email protected]>
committer: nascheme <[email protected]>
date: 2025-12-14T12:42:11-08:00
summary:
Use threading.Event rather than boolean flag. (gh-142722)
files:
M Lib/test/test_free_threading/test_set.py
diff --git a/Lib/test/test_free_threading/test_set.py
b/Lib/test/test_free_threading/test_set.py
index 251020319b20f3..9dd3d68d5dad13 100644
--- a/Lib/test/test_free_threading/test_set.py
+++ b/Lib/test/test_free_threading/test_set.py
@@ -1,5 +1,5 @@
import unittest
-from threading import Thread, Barrier
+from threading import Thread, Barrier, Event
from test.support import threading_helper
@@ -38,19 +38,18 @@ def test_contains_mutate(self):
"""Test set contains operation combined with mutation."""
barrier = Barrier(2, timeout=2)
s = set()
- done = False
+ done = Event()
NUM_LOOPS = 1000
def read_set():
barrier.wait()
- while not done:
+ while not done.is_set():
for i in range(self.SET_SIZE):
item = i >> 1
result = item in s
def mutate_set():
- nonlocal done
barrier.wait()
for i in range(NUM_LOOPS):
s.clear()
@@ -60,7 +59,7 @@ def mutate_set():
s.discard(j)
# executes the set_swap_bodies() function
s.__iand__(set(k for k in range(10, 20)))
- done = True
+ done.set()
threads = [Thread(target=read_set), Thread(target=mutate_set)]
for t in threads:
@@ -70,7 +69,7 @@ def mutate_set():
def test_contains_frozenset(self):
barrier = Barrier(3, timeout=2)
- done = False
+ done = Event()
NUM_LOOPS = 1_000
@@ -80,20 +79,19 @@ def test_contains_frozenset(self):
def mutate_set():
barrier.wait()
- while not done:
+ while not done.is_set():
s.add(0)
s.add(1)
s.clear()
def read_set():
- nonlocal done
barrier.wait()
container = frozenset([frozenset([0])])
self.assertTrue(set([0]) in container)
for _ in range(NUM_LOOPS):
# Will return True when {0} is the key and False otherwise
result = s in container
- done = True
+ done.set()
threads = [
Thread(target=read_set),
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