update

Signed-off-by: chai <chaifix@163.com>

2 files changed, 10 insertions, 2 deletions

diff --git a/src/libjin/common/singleton.h b/src/libjin/common/singleton.h
index e6326b2..a6c7d6d 100644
--- a/src/libjin/common/singleton.h
+++ b/src/libjin/common/singleton.h
@@ -21,7 +21,7 @@ namespace jin
     protected:
         Singleton() {};
         virtual ~Singleton() {};
-    private: 
+    private:
         Singleton(const Singleton&);
         Singleton& operator = (const Singleton&);
 
@@ -29,6 +29,10 @@ namespace jin
     };
 
     template<class T> T* Singleton<T>::_instance = nullptr;
+
+#define SINGLETON(T) \
+    friend Singleton<T>
+
 }
 
 #endif
\ No newline at end of file
diff --git a/src/libjin/common/subsystem.h b/src/libjin/common/subsystem.h
index 55b0f0d..90e8570 100644
--- a/src/libjin/common/subsystem.h
+++ b/src/libjin/common/subsystem.h
@@ -16,7 +16,7 @@ namespace jin
 
         void init(const SettingBase* setting)
         {
-            CallOnce(initSystem(setting));
+            CALLONCE(initSystem(setting));
         }
 
         void quit()
@@ -26,11 +26,15 @@ namespace jin
         }
 
     protected:
+
         Subsystem() {};
         virtual ~Subsystem() {};
 
+        SINGLETON(System);
+
         virtual bool initSystem(const Setting* setting) = 0;
         virtual void quitSystem() = 0;
+
     };
 
 }