[记]tokio学习

use std::thread;
use std::time;
use tokio::time::{sleep,Duration};
fn blocking_call() -> String{
    for idx in 0..5{
        thread::sleep(time::Duration::from_secs(1));
        println!("---{}",idx);
    }
    
    "Finally done".to_string()
}

async fn async_call(id: i32){
    sleep(Duration::from_secs(1)).await;
    println!("Async id:{}",id);
}

#[tokio::main]
async fn main() {
    let blocking_call_handle = tokio::task::spawn_blocking(blocking_call);
    let mut async_handles = Vec::new();
    for id in 0..10{
        async_handles.push(tokio::spawn(async_call(id)));
    }

    for handle in async_handles{
        handle.await.unwrap();
    }
    println!("Hello, world!");
    let result = blocking_call_handle.await.unwrap();
    println!("Blocking result:{}",result);
}

---0
Async id:2
Async id:7
Async id:6
Async id:0
Async id:3
Async id:9
Async id:4
Async id:5
Async id:8
Async id:1
Hello, world!
---1
---2
---3
---4
Blocking result:Finally done