Compio

A thread-per-core Rust runtime with IOCP/io_uring. The name comes from "completion-based IO". This crate is inspired by monoio.

Why not Tokio?

Tokio is a great generic-propose async runtime. However, it is poll-based, and even uses undocumented APIs on Windows. We would like some new high-level APIs to perform IOCP/io_uring.

Unlike tokio-uring, this runtime isn't Tokio-based. This is mainly because that no public APIs to control IOCP in mio, and tokio won't public APIs to control mio before mio reaches 1.0.

Quick start

rust,no_run let buffer = compio::task::block_on(async { let file = compio::fs::OpenOptions::new().read(true).open("Cargo.toml").unwrap(); let (read, buffer) = file.read_at(Vec::with_capacity(1024), 0).await; let read = read.unwrap(); assert_eq!(read, buffer.len()); String::from_utf8(buffer).unwrap() }); println!("{}", buffer);