Rcore Gangs 【HOT — 2026】

Modify your existing scheduler (e.g., RoundRobinScheduler ) to wrap gang logic:

#[derive(PartialEq)] pub enum GangStatus Pending, // waiting for all members to be ready Runnable, // all ready, can schedule Running, // currently scheduled on CPUs rcore gangs

fn next(&mut self) -> Option<Arc<TaskControlBlock>> if let Some(tid) = self.gang_sched.pick_next_task() return find_task_by_tid(tid); self.inner.next() Modify your existing scheduler (e

pub fn create_gang(&mut self, members: Vec<usize>) -> usize let id = self.gangs.len(); let gang = Arc::new(Mutex::new(Gang id, members: members.clone(), status: GangStatus::Pending, )); for &tid in &members self.task_to_gang.insert(tid, id); self.gangs.insert(id, gang); id Modify your existing scheduler (e.g.

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

/// 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);