听起来非常简单, 我们把上例中的运行时构造步骤进行更改, 并将 rt.spawn 替换为函数调用 tokio::spawn: use std::time::Duration; fn main() { let rt = tokio::runtime::Builder::new_current_thread().enable_all().build().unwrap(); etokio::spawn(async move { println!("Printing in a ...
async fn main() { letsemaphore= Semaphore::new(3); let permit1 = semaphore.clone(); let permit2 = semaphore.clone(); let task1 = tokio::spawn(async move { permit1.acquire().await; // Do work }); let task2 = tokio::spawn(async move { permit2.acquire().await; // Do work }...
("Accepted"); tokio::spawn(async move { process(socket, db).await; }); } } 为何使用 std::sync::Mutex 上面代码还有一点非常重要,那就是我们使用了 std::sync::Mutex 来保护 HashMap,而不是使用 tokio::sync::Mutex。 在使用 Tokio 编写异步代码时,一个常见的错误无条件地使用 tokio::sync::...
usetokio::time::{self,Duration};#[tokio::main]async fn main(){ let handle=tokio::spawn(async {// do some worktokio::time::sleep(Duration::from_secs(10)).await;println!("Task completed");});// 100毫秒后取消任务time::sleep(Duration::from_millis(100)).await;drop(handle);println!("...
2、 启动一个 async task tokio::spawn(asyncmove{ // a timer letmutinterval= time::interval(time::Duration::from_secs(5)); loop{ interval.tick().await; } }); 3、oneshot channel let(close_tx, close_rx) = oneshot::channel();
.on_thread_start(move || { core_affinity::set_for_current(core_id.clone()); }) .enable_all() .build() .unwrap(); rt.block_on(async { for i in 0..8 { println!("num {}", i); tokio::spawn(async move { loop { let mut sum: i32 = 0; ...
("accepted connection"); tokio::spawn(asyncmove{ handle_client(stream) .instrument(span!(Level::INFO,"handle_client")) .await.unwrap_or_else(|e| error!("error: {:?}", e)); }); }Ok(()) } 在这个函数中,我们使用 tokio::spawn 来启动一个新的异步任务来处理每个客户端连接。我们还使用...
tokio::spawn(async move { loop { let mut sum: i32 = 0; for i in 0..100000000 { sum = sum.overflowing_add(i).0; } println!("sum {}", sum); } }); } }); } 程序非常简单,首先构造一个 tokio runtime 环境,然后派生多个 tokio 并发,每个并发执行一个无限循环做 overflowing_add。over...
use tokio::sync::mpsc::{channel, Receiver, Sender}; use tokio; fn main() { // 创建一个 Channel let (sender, receiver) = channel(32); // 在一个新的异步任务中接收数据 tokio::spawn(async move { while let Some(message) = receiver.recv().await { println!("Received message: {}", ...
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();...