block_on

winmsg_executor

Function block_on 

Source 
pub fn block_on<'a, T: 'a>(future: impl Future<Output = T> + 'a) -> T
Expand description

Runs a future to completion on the calling thread’s message loop.

This runs the provided future on the current thread, blocking until it is complete. Also runs any tasks [spawn]ed from the same thread. Note that any spawned tasks will be suspended after block_on returns. Calling block_on again will resume previously spawned tasks.

§Panics

Panics when quitting out of the message loop without the future being ready. This can happen when the future or any spawned task calls the PostQuitMessage() WinAPI function.

Examples found in repository?
examples/basic.rs (lines 21-34)
19fn main() {
20    println!("hello");
21    block_on(async {
22        let task = spawn_local(async {
23            println!("async hello 1");
24            poll_n_times(3).await;
25            println!("async bye 1");
26            "async 1 result"
27        });
28
29        println!("async hello 2");
30        poll_n_times(2).await;
31        println!("async bye 2");
32
33        println!("{}", task.await);
34    });
35    println!("bye");
36}
More examples
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examples/threads.rs (lines 22-26)
19fn main() {
20    thread::spawn(|| {
21        println!("thread hello");
22        block_on(async {
23            println!("thread async hello");
24            poll_n_times(3).await;
25            println!("thread async bye");
26        });
27        println!("thread bye");
28    });
29
30    println!("main hello");
31    block_on(async {
32        println!("main async hello");
33        poll_n_times(3).await;
34        println!("main async bye");
35    });
36    println!("main bye");
37}