Add boards/ && clippy

os/src/task/id.rs

@@ -31,7 +31,7 @@ impl RecycleAllocator {
     pub fn dealloc(&mut self, id: usize) {
         assert!(id < self.current);
         assert!(
-            self.recycled.iter().find(|i| **i == id).is_none(),
+            !self.recycled.iter().any(|i| *i == id),
             "id {} has been deallocated!",
             id
         );

os/src/task/manager.rs

@@ -40,7 +40,7 @@ pub fn fetch_task() -> Option<Arc<TaskControlBlock>> {
 
 pub fn pid2process(pid: usize) -> Option<Arc<ProcessControlBlock>> {
     let map = PID2PCB.exclusive_access();
-    map.get(&pid).map(|task| Arc::clone(task))
+    map.get(&pid).map(Arc::clone)
 }
 
 pub fn insert_into_pid2process(pid: usize, process: Arc<ProcessControlBlock>) {

os/src/task/mod.rs

@@ -5,6 +5,7 @@ mod process;
 mod processor;
 mod signal;
 mod switch;
+#[allow(clippy::module_inception)]
 mod task;
 
 use crate::fs::{open_file, OpenFlags};

os/src/task/processor.rs

@@ -25,7 +25,7 @@ impl Processor {
         self.current.take()
     }
     pub fn current(&self) -> Option<Arc<TaskControlBlock>> {
-        self.current.as_ref().map(|task| Arc::clone(task))
+        self.current.as_ref().map(Arc::clone)
     }
 }
 
@@ -70,8 +70,7 @@ pub fn current_process() -> Arc<ProcessControlBlock> {
 
 pub fn current_user_token() -> usize {
     let task = current_task().unwrap();
-    let token = task.get_user_token();
-    token
+    task.get_user_token()
 }
 
 pub fn current_trap_cx() -> &'static mut TrapContext {