Expand description

Tools for working with tasks.

This module contains:

  • Spawn, a trait for spawning new tasks.
  • Context, a context of an asynchronous task, including a handle for waking up the task.
  • Waker, a handle for waking up a task.

The remaining types and traits in the module are used for implementing executors or dealing with synchronization issues around task wakeup.

Structs

A synchronization primitive for task wakeup.

The Context of an asynchronous task.

A custom trait object for polling futures, roughly akin to Box<dyn Future<Output = T> + Send + 'a>.

A custom trait object for polling futures, roughly akin to Box<dyn Future<Output = T> + 'a>.

A RawWaker allows the implementor of a task executor to create a Waker which provides customized wakeup behavior.

A virtual function pointer table (vtable) that specifies the behavior of a RawWaker.

An error that occurred during spawning.

A Waker is a handle for waking up a task by notifying its executor that it is ready to be run.

A Waker that is only valid for a given lifetime.

Enums

Indicates whether a value is available or if the current task has been scheduled to receive a wakeup instead.

Traits

A way of waking up a specific task.

The LocalSpawn is similar to Spawn, but allows spawning futures that don’t implement Send.

Extension trait for LocalSpawn.

The Spawn trait allows for pushing futures onto an executor that will run them to completion.

Extension trait for Spawn.

A custom implementation of a future trait object for FutureObj, providing a vtable with drop support.

Functions

Create a new Waker which does nothing when wake() is called on it.

Get a static reference to a Waker which does nothing when wake() is called on it.

Creates a Waker from an Arc<impl ArcWake>.

Creates a reference to a Waker from a reference to Arc<impl ArcWake>.