response_time_analysis/arrival/
periodic.rs

1use super::{divide_with_ceil, ArrivalBound, Sporadic};
2use crate::time::Duration;
3
4/// Classic jitter-free periodic arrival process as introduced by Liu & Layland.
5#[derive(Copy, Clone, Debug)]
6pub struct Periodic {
7    /// The exact separation between two job releases.
8    pub period: Duration,
9}
10
11impl Periodic {
12    /// Construct a new periodic arrival model.
13    pub fn new(period: Duration) -> Periodic {
14        Periodic { period }
15    }
16}
17
18impl ArrivalBound for Periodic {
19    fn number_arrivals(&self, delta: Duration) -> usize {
20        divide_with_ceil(delta, self.period) as usize
21    }
22
23    fn steps_iter<'a>(&'a self) -> Box<dyn Iterator<Item = Duration> + 'a> {
24        Box::new((0..).map(move |j| self.period * j + Duration::from(1)))
25    }
26
27    fn clone_with_jitter(&self, jitter: Duration) -> Box<dyn ArrivalBound> {
28        let mut ab = Box::new(Sporadic::from(*self));
29        ab.jitter = jitter;
30        ab
31    }
32}

response_time_analysis/arrival/periodic.rs

response_time_analysis/arrival/
periodic.rs