kernel/state/
kstate.rs

1// SPDX-License-Identifier: GPL-3.0-only
2//! Central kernel state aggregate ([`KState`]): one static holding every OS
3//! subsystem's state.
4//!
5//! Authors: MarioS271
6
7use crate::cpu::state::Cpu;
8use crate::kprint::state::KPrint;
9use crate::mm::state::Mm;
10use crate::sched::state::sched::Sched;
11use crate::vfs::state::Vfs;
12
13pub static KSTATE: KState = KState {
14    cpu: Cpu::new(),
15    kprint: KPrint::new(),
16    mm: Mm::new(),
17    sched: Sched::new(),
18    vfs: Vfs::new()
19};
20
21/// The central kernel state aggregate; one field per OS subsystem domain.
22pub struct KState {
23    pub cpu: Cpu,
24    pub kprint: KPrint,
25    pub mm: Mm,
26    pub sched: Sched,
27    pub vfs: Vfs
28}
29
30impl KState {
31    /// Calls the `init` method of all subsystems which have one
32    ///
33    /// > This method should be the very first call the kernel makes, as without it,
34    /// a lot of [`KSTATE`] will be in an incorrect state for the boot process
35    ///
36    /// Use this to initialize any non-zero default values; those aren't initialized in
37    /// the const fn new, as that would increase the binary size by the size of the entire KSTATE
38    /// struct, which we don't want
39    pub fn init(&self) {
40        self.kprint.init();
41        self.mm.init();
42        self.sched.init();
43    }
44}
kernel/state/kstate.rs

kernel/state/
kstate.rs
