Await deadlines

await task within duration returns a typed timeout Result. On expiry the scheduler requests cancellation and drains the task's cooperative cleanup. A task returning Result produces a nested Result; choose explicitly which layer to propagate. Native work without cancellation checkpoints cannot be forcibly interrupted.

Complete example

Run this example locally with the installed CLI. The browser playground does not provide the host scheduler.

async fn load() -> int {
    sleep 20ms
    42
}

fn main() {
    let result = await load() within 1s
    print(result.unwrap())
}

Rules and behavior

Parallel tasks and deadlines · Documentation

From a checkout of the repository:

zolo examples/features/await_deadlines.zolo