*singleton

1 files changed, 34 insertions, 0 deletions

diff --git a/src/libjin/common/singleton.h b/src/libjin/common/singleton.h
new file mode 100644
index 0000000..e6326b2
--- /dev/null
+++ b/src/libjin/common/singleton.h
@@ -0,0 +1,34 @@
+#ifndef __JIN_SINGLETON_H
+#define __JIN_SINGLETON_H
+
+namespace jin
+{
+    template<class T>
+    class Singleton
+    {
+    public:
+        static T* get()
+        {
+            if (_instance == nullptr)
+                _instance = new T;
+            return _instance;
+        }
+        static void destroy()
+        {
+            delete _instance;
+            _instance = nullptr;
+        }
+    protected:
+        Singleton() {};
+        virtual ~Singleton() {};
+    private: 
+        Singleton(const Singleton&);
+        Singleton& operator = (const Singleton&);
+
+        static T* _instance;
+    };
+
+    template<class T> T* Singleton<T>::_instance = nullptr;
+}
+
+#endif
\ No newline at end of file