#[derive(PartialEq)] pub enum GangStatus Pending, // waiting for all members to be ready Runnable, // all ready, can schedule Running, // currently scheduled on CPUs
impl Scheduler for HybridScheduler fn push(&mut self, task: Arc<TaskControlBlock>) if let Some(gang_id) = self.gang_sched.task_to_gang.get(&task.tid) self.gang_sched.notify_task_ready(task.tid); else self.inner.push(task); rcore gangs
/// Called when a task yields or blocks pub fn task_blocked(&mut self, tid: usize) if let Some(&gang_id) = self.task_to_gang.get(&tid) let gang = self.gangs.get(&gang_id).unwrap(); let mut gang_lock = gang.lock(); gang_lock.status = GangStatus::Pending; // Optionally, preempt all other members of this gang for &other in &gang_lock.members if other != tid && task_status(other) == TaskStatus::Running force_yield_task(other); #[derive(PartialEq)] pub enum GangStatus Pending
pub struct GangScheduler gangs: BTreeMap<usize, Arc<Mutex<Gang>>>, task_to_gang: BTreeMap<usize, usize>, ready_gangs: VecDeque<usize>, // queue of gang IDs ready to run // all ready
pub struct HybridScheduler inner: RoundRobinScheduler, gang_sched: GangScheduler,