forked from koniifer/ableos
89 lines
2.5 KiB
Rust
89 lines
2.5 KiB
Rust
use alloc::{string::ToString, vec::Vec};
|
|
|
|
use crate::{
|
|
capabilities::Capabilities,
|
|
kmain::generate_process_pass,
|
|
proc::{Process, PID},
|
|
Priority,
|
|
};
|
|
/// Add additional wake conditions to the list
|
|
pub enum WakeCondition {
|
|
/// Wake when the process has been blocked for a certain amount of time
|
|
TimerInterrupt(u64),
|
|
SocketRead(PID),
|
|
SocketWrite(PID),
|
|
SocketOpen(PID),
|
|
SocketClose(PID),
|
|
// HardwareEvent,
|
|
}
|
|
|
|
// NOTE: Define what is a sleeping process in the context of the ableOS kernel.
|
|
// Blocked processes are processes that are waiting for a certain event to occur.
|
|
pub struct BlockedProcess {
|
|
pub pid: PID,
|
|
pub wake_time: u64,
|
|
}
|
|
|
|
pub struct Scheduler {
|
|
pub free_pid: PID,
|
|
pub process_exec_time: u64,
|
|
pub execution_queue: Vec<Process>,
|
|
pub sleeping_queue: Vec<Process>,
|
|
// pub blocked_queue: Vec<BlockedProcess>,
|
|
// / All timed processes sorted by wake time
|
|
// pub timed_blocked_queue: Vec<BlockedProcess>,
|
|
}
|
|
impl Scheduler {
|
|
/// Create a new scheduler
|
|
pub fn new() -> Self {
|
|
Self {
|
|
free_pid: PID(0),
|
|
process_exec_time: 0,
|
|
execution_queue: Vec::new(),
|
|
sleeping_queue: Vec::new(),
|
|
}
|
|
}
|
|
|
|
/// Change the current process to the next process in the list
|
|
pub fn next_process(&mut self) {
|
|
self.process_exec_time = 0;
|
|
let previous_task = self.execution_queue[0].clone();
|
|
self.execution_queue.remove(0);
|
|
self.execution_queue.push(previous_task);
|
|
}
|
|
|
|
/// Creates a new process
|
|
/// # Arguments
|
|
/// * `priority` - The priority of the process
|
|
/// # Example
|
|
///
|
|
/// ```
|
|
/// let mut scheduler = scheduler();
|
|
/// let mut process = scheduler.new_process(Priority::Medium);
|
|
/// ```
|
|
///
|
|
/// TODO: Add a priority queue
|
|
/// TODO: Add a process queue
|
|
pub fn new_process(&mut self, priority: Priority) -> Process {
|
|
let process = Process {
|
|
id: self.free_pid,
|
|
password: generate_process_pass(),
|
|
priority,
|
|
capabilities: Capabilities::empty(),
|
|
working_dir: "todo!()".to_string(),
|
|
};
|
|
self.free_pid.0 += 1;
|
|
process
|
|
}
|
|
|
|
pub fn sleep_process(&mut self, process: &mut Process) {
|
|
let sleeping_process = BlockedProcess {
|
|
pid: process.id,
|
|
wake_time: 0,
|
|
};
|
|
|
|
self.sleeping_queue.push(process.clone());
|
|
self.execution_queue.remove(0);
|
|
}
|
|
}
|