open-coroutine-iouring 0.5.0

The io_uring support for open-coroutine
Documentation 
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use once_cell::sync::Lazy;
use std::ffi::c_int;

extern "C" {
    fn linux_version_code() -> c_int;
}

#[must_use]
pub fn kernel_version(major: c_int, patchlevel: c_int, sublevel: c_int) -> c_int {
    ((major) << 16) + ((patchlevel) << 8) + if (sublevel) > 255 { 255 } else { sublevel }
}

#[must_use]
pub fn current_kernel_version() -> c_int {
    unsafe { linux_version_code() }
}

static SUPPORT: Lazy<bool> = Lazy::new(|| current_kernel_version() >= kernel_version(5, 6, 0));

#[must_use]
pub fn support_io_uring() -> bool {
    *SUPPORT
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test() {
        println!("{}", current_kernel_version());
        println!("{}", support_io_uring());
    }
}