How to properly call an async function inside state management with tauri command?

[Hellager]

when i try call an async function inside state management using tauri command like this

impl SomeHandler {
  pub async fn something_async {
    println!("do something!");
  }
}

#[tauri::command]
pub async fn do_something_async<R: Runtime>(state: State<'_, SomeHandlerWrapper>) {
  state.0.lock().unwrap().something_async().await;
}

It will failed to compile and get this error:

future is not `Send` as this value is used across an await

consider moving this into a `let` binding to create a shorter lived borrow

What's the proper way to do this?

[FabianLars]

One simple workaround would be to use tokio's mutex which can be held across an await https://docs.rs/tokio/latest/tokio/sync/struct.Mutex.html (also re-exported as tauri::async_runtime::Mutex

[Hellager]

That's it! Thanks a lot.
For anyone who may have the same question, this is how it should look like
The Result<(), ()> is in need, you can check this discussion #4317

use tauri::async_runtime::Mutex;
impl SomeHandler {
  pub async fn something_async() -> Result<(), ()>{
    println!("do something!");
    Ok(())
  }
}

#[tauri::command]
pub async fn execute_some_command(state: State<'_, SomeHandlerWrapper>) -> Result<(), ()> {
  let mut cur_state = state.0.lock().await;
  cur_state.do_something_async().await
}