test_dummy_thread.py 文件源码

def test_uncond_acquire_blocking(self):
        #Make sure that unconditional acquiring of a locked lock blocks.
        def delay_unlock(to_unlock, delay):
            """Hold on to lock for a set amount of time before unlocking."""
            time.sleep(delay)
            to_unlock.release()

        self.lock.acquire()
        start_time = int(time.time())
        _thread.start_new_thread(delay_unlock,(self.lock, DELAY))
        if support.verbose:
            print()
            print("*** Waiting for thread to release the lock "\
            "(approx. %s sec.) ***" % DELAY)
        self.lock.acquire()
        end_time = int(time.time())
        if support.verbose:
            print("done")
        self.assertTrue((end_time - start_time) >= DELAY,
                        "Blocking by unconditional acquiring failed.")