forked from AbleOS/ableos
86 lines
2.3 KiB
Rust
86 lines
2.3 KiB
Rust
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use alloc::vec::Vec;
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use crate::{
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capabilities::Capabilities,
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proc::{Process, PID},
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Priority,
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};
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/// Add additional wake conditions to the list
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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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pub struct BlockedProcess {
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pub pid: PID,
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pub wake_time: u64,
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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<Process>,
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// pub blocked_queue: Vec<BlockedProcess>,
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// / All timed processes sorted by wake time
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// pub timed_blocked_queue: Vec<BlockedProcess>,
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}
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impl Scheduler {
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/// Create a new scheduler
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pub fn new() -> Self {
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Self {
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free_pid: 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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}
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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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/// Creates a new process
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/// # Arguments
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/// * `priority` - The priority of the process
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/// # Example
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///
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/// ```
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/// let mut scheduler = scheduler();
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/// let mut process = scheduler.new_process(Priority::Medium);
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/// ```
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///
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/// TODO: Add a priority queue
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/// TODO: Add a process queue
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pub fn new_process(&mut self, priority: Priority) -> Process {
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let process = Process {
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id: self.free_pid,
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priority,
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capabilities: Capabilities::empty(),
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};
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self.free_pid.0 += 1;
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process
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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.id,
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wake_time: 0,
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};
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self.sleeping_queue.push(process.clone());
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self.execution_queue.remove(0);
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}
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}
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