1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
# tokio-uring
This crate provides [`io-uring`] for [Tokio] by exposing a new Runtime that is
compatible with Tokio but also can drive [`io-uring`]-backed resources. Any
library that works with [Tokio] also works with `tokio-uring`. The crate
provides new resource types that work with [`io-uring`].
[`io-uring`]: https://unixism.net/loti/
[Tokio]: https://github.com/tokio-rs/tokio
[`fs::File`]: https://docs.rs/tokio-uring/latest/tokio_uring/fs/struct.File.html
[API Docs](https://docs.rs/tokio-uring/latest/tokio_uring) |
[Chat](https://discord.gg/tokio)
# Getting started
Using `tokio-uring` requires starting a [`tokio-uring`] runtime. This
runtime internally manages the main Tokio runtime and a `io-uring` driver.
In your Cargo.toml:
```toml
[dependencies]
tokio-uring = { version = "0.5.0" }
```
In your main.rs:
```rust
use tokio_uring::fs::File;
fn main() -> Result<(), Box<dyn std::error::Error>> {
tokio_uring::start(async {
// Open a file
let file = File::open("hello.txt").await?;
let buf = vec![0; 4096];
// Read some data, the buffer is passed by ownership and
// submitted to the kernel. When the operation completes,
// we get the buffer back.
let (res, buf) = file.read_at(buf, 0).await;
let n = res?;
// Display the contents
println!("{:?}", &buf[..n]);
Ok(())
})
}
```
## Requirements
`tokio-uring` requires a very recent linux kernel. (Not even all kernels with io_uring support will work)
In particular `5.4.0` does not work (This is standard on Ubuntu 20.4). However `5.11.0` (the ubuntu hwe image) does work.
## Project status
The `tokio-uring` project is still very young. Currently, we are focusing on
supporting filesystem and network operations. Eventually, we will add safe APIs for all
io-uring compatible operations.
## License
This project is licensed under the [MIT license].
[MIT license]: LICENSE
### Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in tokio-uring by you, shall be licensed as MIT, without any
additional terms or conditions.
|
