Aether/crates/aether-task/core/src/fencing.rs

#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct FencingToken(u64);

impl FencingToken {
    pub const fn new(value: u64) -> Option<Self> {
        if value == 0 {
            None
        } else {
            Some(Self(value))
        }
    }

    pub const fn get(self) -> u64 {
        self.0
    }
}