lock_tests.py 文件源码

def test_thread_leak(self):
        # The lock shouldn't leak a Thread instance when used from a foreign
        # (non-threading) thread.
        lock = self.locktype()
        def f():
            lock.acquire()
            lock.release()
        n = len(threading.enumerate())
        # We run many threads in the hope that existing threads ids won't
        # be recycled.
        Bunch(f, 15).wait_for_finished()
        if len(threading.enumerate()) != n:
            # There is a small window during which a Thread instance's
            # target function has finished running, but the Thread is still
            # alive and registered.  Avoid spurious failures by waiting a
            # bit more (seen on a buildbot).
            time.sleep(0.4)
            self.assertEqual(n, len(threading.enumerate()))