xref: /DragonOS/kernel/src/sched/prio.rs (revision fae6e9ade46a52976ad5d099643d51cc20876448)
1 pub const MAX_NICE: i32 = 20;
2 pub const MIN_NICE: i32 = -20;
3 pub const NICE_WIDTH: i32 = MAX_NICE - MIN_NICE + 1;
4 
5 pub const MAX_RT_PRIO: i32 = 100;
6 pub const MAX_PRIO: i32 = MAX_RT_PRIO + NICE_WIDTH;
7 #[allow(dead_code)]
8 pub const DEFAULT_PRIO: i32 = MAX_RT_PRIO + NICE_WIDTH / 2;
9 
10 pub const MAX_DL_PRIO: i32 = 0;
11 pub struct PrioUtil;
12 #[allow(dead_code)]
13 impl PrioUtil {
14     #[inline]
15     pub fn nice_to_prio(nice: i32) -> i32 {
16         nice + DEFAULT_PRIO
17     }
18 
19     #[inline]
20     pub fn prio_to_nice(prio: i32) -> i32 {
21         prio - DEFAULT_PRIO
22     }
23 
24     #[inline]
25     pub fn dl_prio(prio: i32) -> bool {
26         return prio < MAX_DL_PRIO;
27     }
28 
29     #[inline]
30     pub fn rt_prio(prio: i32) -> bool {
31         return prio < MAX_RT_PRIO;
32     }
33 }
34