In #251 we discussed the option of adding a task::spawn_local method, similar to @alexcrichton's design of spawn_local in wasm-bindgen-futures. This is a tracking issue for that design to get feedback on whether people would want this, and how we would go about implementing this.

I'd imagine we would introduce a new API; task::spawn_local which takes a non-Send Future, and ensures it's polled to completion on the current thread. This would interact seamlessly with task::yield_now out of the box.

Example

use async_std::task; task::spawn(async move { task::sleep(Duration::from_secs(1)).await; // The async code in this block will never be moved between threads. task::spawn_local(async { task::sleep(Duration::from_secs(1)).await; }).await; }).await;

Note: task::sleep does implement Send, but it was an easy example to use.