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bpo-44645: Check for interrupts on any potentially backwards edge (GH-27216) (GH-27235)

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(cherry picked from commit d09c134178)

Co-authored-by: Mark Shannon <mark@hotpy.org>
This commit is contained in:
Miss Islington (bot) 2021-07-19 04:15:58 -07:00 • committed by GitHub
parent bce2847169
commit 37bdd2221c
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2 changed files with 31 additions and 1 deletions
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25
Lib/test/test_threading.py
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@ -1604,6 +1604,31 @@ class InterruptMainTests(unittest.TestCase):
self.assertRaises(ValueError, _thread.interrupt_main, signal.NSIG)
self.assertRaises(ValueError, _thread.interrupt_main, 1000000)
@threading_helper.reap_threads
def test_can_interrupt_tight_loops(self):
cont = [True]
started = [False]
interrupted = [False]
def worker(started, cont, interrupted):
iterations = 100_000_000
started[0] = True
while cont[0]:
if iterations:
iterations -= 1
else:
return
pass
interrupted[0] = True
t = threading.Thread(target=worker,args=(started, cont, interrupted))
t.start()
while not started[0]:
pass
cont[0] = False
t.join()
self.assertTrue(interrupted[0])
class AtexitTests(unittest.TestCase):