diff --git a/src/listhead.rs b/src/listhead.rs
index b565dfd..b4c3dcf 100644
--- a/src/listhead.rs
+++ b/src/listhead.rs
@@ -1,16 +1,39 @@
-pub struct ListHead {
-    prev: Option<Box<ListHead>>,
-    next: Option<Box<ListHead>>,
+use std::rc::{Rc, Weak};
+use std::cell::RefCell;
+
+pub struct ListHead<T> {
+    prev: Weak::<RefCell::<ListHead<T>>>,
+    next: Weak::<RefCell::<ListHead<T>>>,
+    data: Weak::<RefCell::<T>>,
 }
 
-impl ListHead {
+impl<T> ListHead<T> {
 
-    pub fn new() -> Self {
-        let p =  ListHead{
-            prev: None,
-            next: None,
-        };
-        return p;
+    pub fn new() -> Rc::<RefCell::<ListHead<T>>> {
+        let this = Rc::new(RefCell::new(ListHead{
+            prev: Weak::<RefCell::<ListHead<T>>>::new(),
+            next: Weak::<RefCell::<ListHead<T>>>::new(),
+            data: Weak::<RefCell::<T>>::new(),
+        }));
+        this.borrow_mut().prev = Rc::downgrade(&this);
+        this.borrow_mut().next = Rc::downgrade(&this);
+        return this;
+    }
+
+    pub fn data(&self) -> &Weak::<RefCell::<T>> {
+        return &self.data;
+    }
+
+    pub fn del(&mut self) {
+        self.next.upgrade().unwrap().borrow_mut().prev = self.prev.clone();
+        self.prev.upgrade().unwrap().borrow_mut().next = self.next.clone();
+    }
+
+    pub fn add_tail(&mut self, pnew: &mut ListHead<T>) {
+        let prev = &mut self.prev;
+        unsafe {
+            let next = Weak::from_raw(self);
+        }
     }
 
 }
diff --git a/src/metamgr.rs b/src/metamgr.rs
index 97155e4..a4cce3c 100644
--- a/src/metamgr.rs
+++ b/src/metamgr.rs
@@ -1,5 +1,5 @@
 use std::rc::Rc;
-use std::fs::File;
+//use std::fs::File;
 use std::collections::HashMap;
 
 pub trait ProtoMsg {
@@ -91,6 +91,7 @@ impl<T: Clone + ProtoMsg> MetaMgr<T> {
     }
 
     pub fn load(&mut self) {
+        /*
         for i in 0..self.meta_classes.len() {
             let meta = &self.meta_classes[i];
             match File::open(&meta.file_name) {
@@ -124,7 +125,7 @@ impl<T: Clone + ProtoMsg> MetaMgr<T> {
 
                 }
             }
-        }
+        }*/
     }
 
     pub fn get_metalist(&mut self, idx: i32) -> Option<&Vec::<Rc::<T>>> {
diff --git a/src/timer.rs b/src/timer.rs
index 9e8da6f..067f097 100644
--- a/src/timer.rs
+++ b/src/timer.rs
@@ -1,17 +1,21 @@
+pub struct TimerList {
+
+}
+
 pub struct Timer {
 
 }
 
 impl Timer {
 
-/*    pub fn init(&mut self,
+    pub fn init(&mut self,
                 get_tick_count: fn () -> i64,
                 get_fxied_timer_expires: fn (i32, i64) -> i64,
                 context: (),
                 gctime: i32,
                 cache_timer_num: i32) {
 
-    }*/
+    }
 
     pub fn uninit(&mut self) {