Issue #8407: signal.sigwait() releases the GIL
Initial patch by Charles-François Natali.
diff --git a/Lib/test/test_signal.py b/Lib/test/test_signal.py
index 0631390..1ed4b9e 100644
--- a/Lib/test/test_signal.py
+++ b/Lib/test/test_signal.py
@@ -607,6 +607,25 @@
signal.alarm(1)
self.assertEqual(signal.sigwait([signal.SIGALRM]), signal.SIGALRM)
+ @unittest.skipUnless(hasattr(signal, 'sigwait'),
+ 'need signal.sigwait()')
+ @unittest.skipIf(threading is None, "test needs threading module")
+ def test_sigwait_thread(self):
+ signum = signal.SIGUSR1
+ old_handler = signal.signal(signum, self.handler)
+ self.addCleanup(signal.signal, signum, old_handler)
+
+ def kill_later():
+ time.sleep(1)
+ os.kill(os.getpid(), signum)
+
+ killer = threading.Thread(target=kill_later)
+ killer.start()
+ try:
+ self.assertEqual(signal.sigwait([signum]), signum)
+ finally:
+ killer.join()
+
@unittest.skipUnless(hasattr(signal, 'pthread_sigmask'),
'need signal.pthread_sigmask()')
def test_pthread_sigmask_arguments(self):