BurritOS/src/kernel/system.rs
2023-03-09 12:08:33 +01:00

63 lines
1.3 KiB
Rust

use std::cell::RefCell;
use crate::simulator::machine::Machine;
use super::thread_manager::ThreadManager;
/// # System
///
/// This structure represents the state of the threads running on the operating system.
/// It contains references to the following:
///
/// - The simulated machine
/// - The current running thread
/// - The list of active threads
/// - The thread to be destroyed next
/// - The scheduler which acts upon these threads
#[derive(PartialEq)]
pub struct System<'a> {
g_machine: RefCell<Machine>,
thread_manager: ThreadManager<'a>
}
impl<'a> System<'a> {
/// System constructor
pub fn new(machine: Machine) -> System<'a> {
Self {
g_machine: RefCell::new(machine),
thread_manager: ThreadManager::new()
}
}
pub fn freeze(&'a mut self) {
self.thread_manager.system.set(Option::Some(self));
}
// GETTERS
/// Returns the Machine
///
/// Useful to access RAM, devices, ...
pub fn get_g_machine(&self) -> &RefCell<Machine> {
&self.g_machine
}
// Setters
/// Assign a machine to the system
pub fn set_g_machine(&mut self, machine: RefCell<Machine>) {
self.g_machine = machine
}
}
#[derive(PartialEq)]
pub enum ObjectType {
SemaphoreType,
LockType,
ConditionType,
FileType,
ThreadType,
InvalidType
}