Method async_wrapper

tornado/test/ioloop_test.py:544–547

(self_event, other_event)

        # run_in_executor works with await and not just gen.coroutine
        # (simply passing the underlying concurrent future would do that).
        async def async_wrapper(self_event, other_event):
            return await IOLoop.current().run_in_executor(
                None, sync_func, self_event, other_event
            )

        res = yield [async_wrapper(event1, event2), async_wrapper(event2, event1)]