Method run_threads

Lib/test/test_queue.py:882–912

(self, n_threads, q, inputs, feed_func, consume_func)

            results.append(val)

    def run_threads(self, n_threads, q, inputs, feed_func, consume_func):
        results = []
        sentinel = None
        seq = inputs.copy()
        seq.reverse()
        rnd = random.Random(42)

        exceptions = []
        def log_exceptions(f):
            def wrapper(*args, **kwargs):
                try:
                    f(*args, **kwargs)
                except BaseException as e:
                    exceptions.append(e)
            return wrapper

        feeders = [threading.Thread(target=log_exceptions(feed_func),
                                    args=(q, seq, rnd, sentinel))
                   for i in range(n_threads)]
        consumers = [threading.Thread(target=log_exceptions(consume_func),
                                      args=(q, results, sentinel))
                     for i in range(n_threads)]

        with threading_helper.start_threads(feeders + consumers):
            pass

        self.assertFalse(exceptions)
        self.assertTrue(q.empty())
        self.assertEqual(q.qsize(), 0)

        return results

    def test_basic(self):
        # Basic tests for get(), put() etc.