Async multi-producer multi-consumer channel

Async synchronization primitives

Async broadcast channels

Async executor

Thread parking and unparking

A `Cow`-like data structure where owned data is stored inside an `Arc`.

Concurrent multi-producer multi-consumer queue

futures::task::AtomicWaker extracted into its own crate

Async networking primitives for TCP/UDP/Unix communication

Duplicate an async I/O handle