diff --git a/general/src/threadsafe/thread_safe_list.hpp b/general/src/threadsafe/thread_safe_list.hpp
index 198e5ed..47f8615 100644
--- a/general/src/threadsafe/thread_safe_list.hpp
+++ b/general/src/threadsafe/thread_safe_list.hpp
@@ -1,7 +1,7 @@
 /*
  * @Author: caiyuzheng
  * @Date: 2021-10-06 23:05:26
- * @LastEditTime: 2021-11-17 15:58:26
+ * @LastEditTime: 2021-11-17 17:06:03
  * @LastEditors: Please set LastEditors
  * @Description: In User Settings Edit
  * @FilePath: \generallib\general\src\threadsafe\thread_safe_list.h
@@ -24,9 +24,12 @@ public:
     ~ThreadSafeList()
     {
     }
+    ThreadSafeList(ThreadSafeList<T> &b){
+        this->m_data =  b.m_data;
+    }
 
-    int
-    PushBack(T v)
+    
+    int PushBack(T v)
     {
         m_mux.lock();
         m_data.push_back(v);
@@ -38,6 +41,7 @@ public:
         m_mux.lock();
         m_data.push_front(v);
         m_mux.unlock();
+        m_cv.notify_one();
         return 0;
     }
     int Emplace(int pos, T v)
@@ -94,11 +98,11 @@ public:
             m_mux.unlock();
             return ret1;
         }else{
-            m_cv.wait(&m_mux);
+            std::unique_lock<std::mutex> guard(m_mux);
+            m_cv.wait(guard);
             auto ret = m_data.begin();
             auto ret1 = *ret;
             m_data.erase(ret);
-            m_mux.unlock();
             return ret1;
         }
     }
diff --git a/test/src/cpp11/cpp11_test.cpp b/test/src/cpp11/cpp11_test.cpp
index 84d3ca1..b12bbbc 100644
--- a/test/src/cpp11/cpp11_test.cpp
+++ b/test/src/cpp11/cpp11_test.cpp
@@ -1,7 +1,7 @@
 /*
  * @Author: your name
  * @Date: 2021-03-15 23:07:25
- * @LastEditTime: 2021-11-17 15:58:56
+ * @LastEditTime: 2021-11-17 17:05:44
  * @LastEditors: Please set LastEditors
  * @Description: In User Settings Edit
  * @FilePath: \cpp11\cpp11_test.cpp
@@ -30,15 +30,23 @@ extern "C"{
 
 int main(int argc, char **argv)
 {
-
+    int i = 0;
     ThreadSafeList<int> ip;
     ip.PushFront(102);
     ip.PushFront(111);
 
+    void *p = &ip;
+    std::thread t1([p]{
+        Sleep(4000);
+        ((ThreadSafeList<int>*)p)->PushFront(123);
+    });
+
     std::cout<<ip.PopFrontAndWait()<<"\r\n";
     std::cout<<ip.PopFrontAndWait()<<"\r\n";
     std::cout<<ip.PopFrontAndWait()<<"\r\n";
 
+
+    t1.join();
     // std::cout<<"test start"<<endl;
     // try{
     //     std::cout<<"cpu count is "<<CoreCount()<<std::endl;