o3 0.16.3

shared-nothing primitives
Documentation 
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use crate::collections::queue::fixed;

/// # Safety
/// `index` must be a pure, stable projection for every copied value.
pub unsafe trait Index: Copy {
    /// Returns the stable dense position shared by every copy of this value.
    fn index(self) -> u32;
}

unsafe impl Index for u32 {
    fn index(self) -> u32 {
        self
    }
}

pub trait Coalescing<T, I = u32> {
    /// # Safety
    /// `index` must be less than the queue's capacity.
    unsafe fn schedule_unchecked(&mut self, index: I, value: T);
}

pub trait Fifo<T> {
    /// # Safety
    /// The queue must have spare capacity.
    unsafe fn vacant_entry_unchecked<'queue>(&'queue mut self) -> fixed::Vacant<'queue, T>;
}