runtime/handle/enter()负责把运行时和当前线程绑定起来,Context是一个线程本地变量,即ThreadLocal,每个线程都有一个Context,而enter()方法就是设置当前线程的Context。这里的Context和前面提到的不是同一个,但是内部使用到了scheduler的Context,所以可以看成是ThreadLocal包装版,在理解时可以近似为同一个。 稍微展开看...
在Tokio的源代码中,tokio/tokio/src/runtime/scheduler/multi_thread_alt/queue.rs是多线程调度器中的一个文件,它定义了用于调度任务的队列和相关的数据结构和功能。 首先,该文件定义了名为Local的结构体。Local结构体用于表示一个本地任务队列,它拥有一个任务缓冲区,可以接收从其他工作线程窃取的任务。该结构体实现...
// General future constructor fn poll_fn(FnMut(thread_local!(Task)) -> Poll<T, E>) -> Future<T, E> // Mapping futures fn Future::map (Future<T, E>, FnOnce(T) -> U) -> Future<U, E> fn Future::map_err (Future<T, E>, FnOnce(E) -> F) -> Future<T, F> fn Future...
E>fn err (E)-> Future<T, E>fn result(Result<T, E>) -> Future<T, E>//General future constructorfn poll_fn(FnMut(thread_local!(Task)) -> Poll<T, E>) -> Future<T, E>//Mapping futuresfn Future::map (Future<T, E>, FnOnce(T) -> U) -> Future<U, E>fn Future::map_e...
std::thread::current().id() ); tokio::time::sleep(Duration::from_secs(1)).await; println!( "[{:?}] Printing in a future (L2).", std::thread::current().id() ); }); println!("Runtime terminated."); } 我们在执行 rt.block_on 来阻塞当前线程之前, 先调用 rt.spawn 方法新增了...
let pool = ThreadPool::new(); let c1 = Arc::new(AtomicUsize::new(0)); let (tx, rx) = oneshot::channel(); let tx1 = Arc::new(Mutex::new(Some(tx))); // Spawn a task let c2 = c1.clone(); let tx2 = tx1.clone(); ...
This is a proposal to deprecate the Tokio LocalSet abstraction in favor of a new LocalRuntime type. Currently, to spawn !Send tasks on Tokio you must use a combination of a current-thread runtime and LocalSet to make that work. However, ...
runtime: fix LocalSet drop in thread local (#5179) net: remove libc type leakage in a public API (#5191) runtime: update the alignment of CachePadded (#5106)Changedio: make tokio::io::copy continue filling the buffer when writer stalls (#5066) runtime: remove coop::budget from Local...
Rust速成(15.4.7 Thread local)-HV 03:27 Rust速成(15.5 线程安全Thread safety)-HV 03:34 Rust速成(15.5.1 Send Trait)-HV 02:19 Rust速成(15.5.2-15.5.3 Sync trait)-HV 03:54 Rust速成(19 宏Macro)-HV 03:10 Rust速成(19.1-19.2 使用宏的时机和内置宏)-HV 04:00 Rust速成(19.3宏的...
("Current UTC time: {}", now); let now_local: DateTime<Local> = Local::now(); println!("Current local time: {}", now_local); } 环境配置: 确保你的 Rust 环境配置正确,特别是 Cargo.toml 文件中的依赖项。如果你添加了新的依赖项(如 chrono),请确保运行 cargo build 或cargo ...