ringcore 0.1.0

A minimal async runtime built on Linux io_uring, designed to expose how Rust futures map to kernel I/O.
Documentation 
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use tokio::fs;
use tokio::io::AsyncReadExt;
use std::time::Instant;
use std::io;

async fn read_file(id: usize) -> io::Result<()> {
    let path = format!("tokio_temp_file_{}.txt", id);
    let mut file = fs::File::open(&path).await?;
    let mut buf = [0u8; 1024];
    file.read_exact(&mut buf).await?;
    Ok(())
}

#[tokio::main]
async fn main() -> io::Result<()> {
    // Setup 100 files
    for i in 0..100 {
        std::fs::write(format!("tokio_temp_file_{}.txt", i), vec![i as u8; 1024])?;
    }

    let start = Instant::now();
    let mut tasks = vec![];
    for i in 0..100 {
        tasks.push(tokio::spawn(read_file(i)));
    }

    for task in tasks {
        task.await.map_err(|e| io::Error::new(io::ErrorKind::Other, e))??;
    }

    println!("Tokio concurrent: 100 tasks in {:?}", start.elapsed());

    // Cleanup
    for i in 0..100 {
        let _ = std::fs::remove_file(format!("tokio_temp_file_{}.txt", i));
    }
    
    Ok(())
}