Function async_runtime::block_on

pub fn block_on<F: Future>(fut: F) -> F::Output

Block the current thread until the given future resolves and return the Output. This just forwards to futures::executor::block_on under the hood.

Warning - this method does not play well with the rest of the executors. If you use the localpool executor, only the future you pass here will be polled. Futures that are "spawned" will just not run.

If you use juliex or async_std, the threadpool will continue working, but block_on will not wait until all your futures have finished. As soon as the future you block on finishes, if block_on is the last statement of your program, the program will just end, regardless of other futures still on the threadpool.

In general you shouldn't block the thread when you are in an async context.

Note: This method is not available on WASM, since WASM currently does not allow blocking the current thread.