tokio::spawn(async move { let data = "Important data"; tx.send(data).unwrap(); }); let data = rx.await.unwrap(); println!("Received: {}", data); } tokio::sync::watch处理任务的多次广播 watch通道适用于在任务之间进行多次的数据广播。 use tokio::sync::watch; #[tokio::main] async ...
use tokio::sync::mpsc;use tokio::time::{sleep,Duration};asyncfnfuture1()->String{sleep(Duration::from_secs(1)).await;String::from("future1")}#[tokio::main]asyncfnmain(){let(tx,mut rx)= mpsc::channel(10); tokio::spawn(asyncmove{foriin1..=5{ tx.send(i).await.unwrap();...
; tokio::spawn(async move { // 在这里拷贝数据 }); } } 下面,来看看重头戏 io::copy ,它有两个参数:一个读取器,一个写入器,然后将读取器中的数据直接拷贝到写入器中,类似的实现代码如下: io::copy(&mut socket, &mut socket).await
usetokio::sync::oneshot;usetokio::time::Duration;#[tokio::main]async fn main(){ let(tx,rx)=oneshot::channel();let task=tokio::spawn(async move { tokio::select!{ _=rx=>{ println!("Task is cancelling...");} _=tokio::time::sleep(Duration::from_secs(10))=>{ println!("Task co...
在一个异步任务中发送消息 tokio::spawn(asyncmove{foriin..10{ tx.send(i).unwrap(); tokio::time::sleep(std::time::Duration::from_secs(1)).await;}});// 在多个异步任务中接收消息for_in..3{letmutrx= rx.clone(); tokio::spawn(asyncmove{loop{match rx.recv().await{Ok(msg...
("accepted connection"); tokio::spawn(asyncmove{ handle_client(stream) .instrument(span!(Level::INFO,"handle_client")) .await.unwrap_or_else(|e| error!("error: {:?}", e)); }); }Ok(()) }#[tokio::main]asyncfnmain() - >Result< (),Box<dynstd::error::Error >> { tracing_...
use tokio::sync::mpsc;enumMessage{Text(String),Number(i32),}#[tokio::main]asyncfnmain(){let(mut tx,mut rx)= mpsc::channel(32); tokio::spawn(asyncmove{ tx.send(Message::Text("hello".to_string())).await.unwrap(); tx.send(Message::Number(123)).await.unwrap();});while...
etokio::spawn(async move { println!("Printing in a future (L1)."); tokio::time::sleep(Duration::from_secs(1)).await; println!("Printing in a future (L2)."); }); println!("Runtime terminated."); } 执行这段代码, 出现了这样的运行时错误: thread 'main' panicked at 'there is ...
async fn main() -> Result<(), Box<dyn Error>> { let listener = TcpListener::bind("127.0.0.1:8080").await?; // 异步http服务器 loop { let (mut socket, _) = listener.accept().await?; tokio::spawn(async move { let mut buffer = [0; 1024]; ...
use tokio::sync::mpsc;#[tokio::main]asyncfnmain(){let(mut tx,mut rx)= mpsc::unbounded_channel(); tokio::spawn(asyncmove{ tx.send("hello").await.unwrap();});letmsg= rx.recv().await.unwrap();println!("{}", msg);} 在上面的代码中,我们使用了 tokio::spawn 函数创建了一个...