1 //! Tools for working with tasks. 2 //! 3 //! This module contains: 4 //! 5 //! - [`Spawn`], a trait for spawning new tasks. 6 //! - [`Context`], a context of an asynchronous task, 7 //! including a handle for waking up the task. 8 //! - [`Waker`], a handle for waking up a task. 9 //! 10 //! The remaining types and traits in the module are used for implementing 11 //! executors or dealing with synchronization issues around task wakeup. 12 13 #[doc(no_inline)] 14 pub use core::task::{Context, Poll, RawWaker, RawWakerVTable, Waker}; 15 16 pub use futures_task::{FutureObj, LocalFutureObj, LocalSpawn, Spawn, SpawnError, UnsafeFutureObj}; 17 18 pub use futures_task::noop_waker; 19 pub use futures_task::noop_waker_ref; 20 21 #[cfg(not(futures_no_atomic_cas))] 22 #[cfg(feature = "alloc")] 23 pub use futures_task::ArcWake; 24 25 #[cfg(not(futures_no_atomic_cas))] 26 #[cfg(feature = "alloc")] 27 pub use futures_task::waker; 28 29 #[cfg(not(futures_no_atomic_cas))] 30 #[cfg(feature = "alloc")] 31 pub use futures_task::{waker_ref, WakerRef}; 32 33 #[cfg(not(futures_no_atomic_cas))] 34 pub use futures_core::task::__internal::AtomicWaker; 35 36 mod spawn; 37 pub use self::spawn::{LocalSpawnExt, SpawnExt}; 38