Method apply

crates/core/src/startup.rs:241–256

Apply this reservation to an arbitrary list of core ids. Returns the allocated cores in the order: - irq - reserved - databases - tokio_workers - rayon Left public for testing and debugging purposes.

(&self, cores: &mut Vec<CoreId>)

    ///
    /// Left public for testing and debugging purposes.
    pub fn apply(&self, cores: &mut Vec<CoreId>) -> [Vec<CoreId>; 5] {
        let irq = cores.drain(..self.irq).collect_vec();
        let reserved = cores.drain(..self.reserved).collect_vec();

        let total = cores.len() as f64;
        let frac = |frac: f64| (total * frac).ceil() as usize;
        fn claim(cores: &mut Vec<CoreId>, n: usize) -> impl Iterator<Item = CoreId> + '_ {
            cores.drain(..n.min(cores.len()))
        }

        let databases = claim(cores, frac(self.databases)).collect_vec();
        let tokio_workers = claim(cores, frac(self.tokio_workers)).collect_vec();
        let rayon = claim(cores, frac(self.rayon)).collect_vec();

        [irq, reserved, databases, tokio_workers, rayon]
    }
}

/// A type holding cores divvied up into different sets.