std :: async::coro
Macro ASYNC_YIELD
#define ASYNC_YIELD(k) *__async_st = __async_point_##k; cx.wake_by_ref(); return Poll::pending(); __async_resume_##k: { }std :: async::coro
#define ASYNC_YIELD(k) *__async_st = __async_point_##k; cx.wake_by_ref(); return Poll::pending(); __async_resume_##k: { }