Issue #11223: Add threading._info() function providing informations about the
thread implementation.
Skip test_lock_acquire_interruption() and test_rlock_acquire_interruption() of
test_threadsignals if a thread lock is implemented using a POSIX mutex and a
POSIX condition variable. A POSIX condition variable cannot be interrupted by a
signal (e.g. on Linux, the futex system call is restarted).
diff --git a/Lib/test/test_threadsignals.py b/Lib/test/test_threadsignals.py
index 46e405a..b0bc607 100644
--- a/Lib/test/test_threadsignals.py
+++ b/Lib/test/test_threadsignals.py
@@ -14,6 +14,9 @@
process_pid = os.getpid()
signalled_all=thread.allocate_lock()
+info = thread.info()
+USING_PTHREAD_COND = (info['name'] == 'pthread'
+ and info['lock_implementation'] == 'mutex+cond')
def registerSignals(for_usr1, for_usr2, for_alrm):
usr1 = signal.signal(signal.SIGUSR1, for_usr1)
@@ -70,6 +73,8 @@
def alarm_interrupt(self, sig, frame):
raise KeyboardInterrupt
+ @unittest.skipIf(USING_PTHREAD_COND,
+ 'POSIX condition variables cannot be interrupted')
def test_lock_acquire_interruption(self):
# Mimic receiving a SIGINT (KeyboardInterrupt) with SIGALRM while stuck
# in a deadlock.
@@ -91,6 +96,8 @@
finally:
signal.signal(signal.SIGALRM, oldalrm)
+ @unittest.skipIf(USING_PTHREAD_COND,
+ 'POSIX condition variables cannot be interrupted')
def test_rlock_acquire_interruption(self):
# Mimic receiving a SIGINT (KeyboardInterrupt) with SIGALRM while stuck
# in a deadlock.