94 lines
2.5 KiB
Rust
94 lines
2.5 KiB
Rust
use crate::{arch::generate_process_pass, stdio::StdIO};
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use crate::scheduler::capabilities::Capabilities;
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use kernel::proccess::PID;
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pub mod capabilities;
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pub mod priority;
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pub mod proc;
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use priority::Priority;
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use proc::Process;
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/// Add additional wake conditions to the list
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#[derive(Clone, Debug)]
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pub enum WakeCondition {
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/// Wake when the process has been blocked for a certain amount of time
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TimerInterrupt(u64),
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SocketRead(PID),
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SocketWrite(PID),
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SocketOpen(PID),
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SocketClose(PID),
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// HardwareEvent,
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}
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// NOTE: Define what is a sleeping process in the context of the ableOS kernel.
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// Blocked processes are processes that are waiting for a certain event to occur.
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#[derive(Clone, Debug)]
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pub struct BlockedProcess {
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pub pid: PID,
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pub wake_condition: WakeCondition,
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}
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pub struct Scheduler {
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pub free_pid: PID,
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pub process_exec_time: u64,
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pub execution_queue: Vec<Process>,
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pub sleeping_queue: Vec<BlockedProcess>,
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pub blocked_queue: Vec<BlockedProcess>,
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// / All timed processes sorted by wake time
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}
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impl Scheduler {
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/// Create a new scheduler
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pub const fn new() -> Self {
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Self {
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free_pid: 0,
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process_exec_time: 0,
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execution_queue: Vec::new(),
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sleeping_queue: Vec::new(),
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blocked_queue: Vec::new(),
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}
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}
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/// Change the current process to the next process in the list
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pub fn next_process(&mut self) {
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self.process_exec_time = 0;
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let previous_task = self.execution_queue[0].clone();
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self.execution_queue.remove(0);
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self.execution_queue.push(previous_task);
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}
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pub fn add_process(&mut self, mut process: Process) {
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process.pid = self.free_pid;
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self.free_pid += 1;
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self.execution_queue.push(process);
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}
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pub fn new_process(
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&mut self,
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capabilities: Capabilities,
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priority: Priority,
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working_dir: String,
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stdio: StdIO,
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) -> Process {
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Process {
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pid: 0,
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priority,
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working_dir,
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stdio,
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password: generate_process_pass(),
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capabilities,
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}
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}
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pub fn sleep_process(&mut self, process: &mut Process) {
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let sleeping_process = BlockedProcess {
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pid: process.pid,
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wake_condition: WakeCondition::TimerInterrupt(0),
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};
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self.sleeping_queue.push(sleeping_process);
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self.execution_queue.remove(0);
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}
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}
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pub static SCHEDULER: spin::Mutex<Scheduler> = spin::Mutex::new(Scheduler::new());
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