> +/// Use QEMU's event loops to run a Rust [`Future`] to completion and return
> its result.
> +///
> +/// This function must be called in coroutine context. If the future isn't
> ready yet, it yields.
> +pub fn qemu_co_run_future<F: Future>(future: F) -> F::Output {
> + let waker = Waker::from(Arc::new(RunFutureWaker {
> + co: unsafe { bindings::qemu_coroutine_self() },
> + }));
> + let mut cx = Context::from_waker(&waker);
> +
> + let mut pinned_future = std::pin::pin!(future);
pin macro stabilized in v1.68.0, but currently the minimum rustc
supported by QEMU is v1.63.
I found there's a workaround [*], so we can add a temporary pin.rs in
qemu_api until QEMU bumps up rustc to >= v1.68?
[*]: https://github.com/rust-lang/rust/issues/93178#issuecomment-1386177439
> + loop {
> + match pinned_future.as_mut().poll(&mut cx) {
> + Poll::Ready(res) => return res,
> + Poll::Pending => unsafe {
> + bindings::qemu_coroutine_yield();
> + },
> + }
> + }
> +}
> +
