Function kani::futures::block_on

pub fn block_on<T>(fut: impl Future<Output = T>) -> T

A very simple executor: it polls the future in a busy loop until completion

This is intended as a drop-in replacement for futures::block_on, which Kani cannot handle. Whereas a clever executor like block_on in futures or tokio would interact with the OS scheduler to be woken up when a resource becomes available, this is not supported by Kani. As a consequence, this function completely ignores the waker infrastructure and just polls the given future in a busy loop.

Note that spawn is not supported with this function. Use block_on_with_spawn if you need it.