95 lines
2.5 KiB
Rust
95 lines
2.5 KiB
Rust
pub mod capabilities;
|
|
pub mod priority;
|
|
pub mod proc;
|
|
|
|
use crate::scheduler::capabilities::Capabilities;
|
|
use crate::{arch::generate_process_pass, stdio::StdIO};
|
|
use kernel::proccess::PID;
|
|
use priority::Priority;
|
|
use proc::Process;
|
|
|
|
pub static SCHEDULER: spin::Mutex<Scheduler> = spin::Mutex::new(Scheduler::new());
|
|
|
|
/// Add additional wake conditions to the list
|
|
#[derive(Clone, Debug)]
|
|
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.
|
|
#[derive(Clone, Debug)]
|
|
pub struct BlockedProcess {
|
|
pub pid: PID,
|
|
pub wake_condition: WakeCondition,
|
|
}
|
|
|
|
pub struct Scheduler {
|
|
pub free_pid: PID,
|
|
pub process_exec_time: u64,
|
|
pub execution_queue: Vec<Process>,
|
|
pub sleeping_queue: Vec<BlockedProcess>,
|
|
pub blocked_queue: Vec<BlockedProcess>,
|
|
// All timed processes sorted by wake time
|
|
}
|
|
|
|
impl Scheduler {
|
|
/// Create a new scheduler
|
|
pub const fn new() -> Self {
|
|
Self {
|
|
free_pid: 0,
|
|
process_exec_time: 0,
|
|
execution_queue: Vec::new(),
|
|
sleeping_queue: Vec::new(),
|
|
blocked_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);
|
|
}
|
|
|
|
pub fn add_process(&mut self, mut process: Process) {
|
|
process.pid = self.free_pid;
|
|
self.free_pid += 1;
|
|
self.execution_queue.push(process);
|
|
}
|
|
|
|
pub fn new_process(
|
|
&mut self,
|
|
capabilities: Capabilities,
|
|
priority: Priority,
|
|
working_dir: String,
|
|
stdio: StdIO,
|
|
) -> Process {
|
|
Process {
|
|
pid: 0,
|
|
priority,
|
|
working_dir,
|
|
stdio,
|
|
password: generate_process_pass(),
|
|
capabilities,
|
|
}
|
|
}
|
|
|
|
pub fn sleep_process(&mut self, process: &mut Process) {
|
|
let sleeping_process = BlockedProcess {
|
|
pid: process.pid,
|
|
wake_condition: WakeCondition::TimerInterrupt(0),
|
|
};
|
|
|
|
self.sleeping_queue.push(sleeping_process);
|
|
self.execution_queue.remove(0);
|
|
}
|
|
}
|