Reorganize the codebase

services/libs/jinux-std/src/process/fifo_scheduler.rs

@@ -0,0 +1,32 @@
+use crate::prelude::*;
+use jinux_frame::task::{set_scheduler, Scheduler, Task, TaskAdapter};
+
+use intrusive_collections::LinkedList;
+
+pub struct FifoScheduler {
+    tasks: Mutex<LinkedList<TaskAdapter>>,
+}
+
+impl FifoScheduler {
+    pub fn new() -> Self {
+        Self {
+            tasks: Mutex::new(LinkedList::new(TaskAdapter::new())),
+        }
+    }
+}
+
+impl Scheduler for FifoScheduler {
+    fn enqueue(&self, task: Arc<Task>) {
+        self.tasks.lock().push_back(task.clone());
+    }
+
+    fn dequeue(&self) -> Option<Arc<Task>> {
+        self.tasks.lock().pop_front()
+    }
+}
+
+pub fn init() {
+    let fifo_scheduler = Box::new(FifoScheduler::new());
+    let scheduler = Box::<FifoScheduler>::leak(fifo_scheduler);
+    set_scheduler(scheduler);
+}