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_attr(target_os = "none", cfg(target_has_atomic = "ptr"))]
22 #[cfg(feature = "alloc")]
23 pub use futures_task::ArcWake;
24 
25 #[cfg_attr(target_os = "none", cfg(target_has_atomic = "ptr"))]
26 #[cfg(feature = "alloc")]
27 pub use futures_task::waker;
28 
29 #[cfg_attr(target_os = "none", cfg(target_has_atomic = "ptr"))]
30 #[cfg(feature = "alloc")]
31 pub use futures_task::{waker_ref, WakerRef};
32 
33 #[cfg_attr(
34     target_os = "none",
35     cfg(any(target_has_atomic = "ptr", feature = "portable-atomic"))
36 )]
37 pub use futures_core::task::__internal::AtomicWaker;
38 
39 mod spawn;
40 pub use self::spawn::{LocalSpawnExt, SpawnExt};
41