From 40fc27154fe754181934dc7ee31375e6bdfb33fc Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Tue, 23 Oct 2018 12:23:58 +0800
Subject: *merge from minimal

---
 src/libjin/Common/je_singleton.hpp | 80 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 src/libjin/Common/je_singleton.hpp

(limited to 'src/libjin/Common/je_singleton.hpp')

diff --git a/src/libjin/Common/je_singleton.hpp b/src/libjin/Common/je_singleton.hpp
new file mode 100644
index 0000000..e981e7a
--- /dev/null
+++ b/src/libjin/Common/je_singleton.hpp
@@ -0,0 +1,80 @@
+#ifndef __JE_SINGLETON_H
+#define __JE_SINGLETON_H
+
+namespace JinEngine
+{
+
+    ///
+    /// Singleton base class.
+    ///
+    template<class T>
+    class Singleton
+    {
+    public:
+        ///
+        /// Get singleton. 
+        /// 
+        /// @param Singleton instance of class.
+        ///
+        static T* get()
+        {
+            if (_instance == nullptr)
+                _instance = new T;
+            return _instance;
+        }
+
+        ///
+        /// Destroy instance of singleton.
+        ///
+        static void destroy()
+        {
+            delete _instance;
+            _instance = nullptr;
+        }
+
+    protected:
+        ///
+        /// Singleton constructor.
+        ///
+        Singleton() {};
+
+        ///
+        /// Singleton destructor.
+        ///
+        virtual ~Singleton() {};
+
+        ///
+        /// Singleton instance.
+        ///
+        static T* _instance;
+
+    private:
+        ///
+        /// Singleton copy constructor.
+        ///
+        /// @param singleton Singleton of class.
+        ///
+        Singleton(const Singleton& singleton);
+
+        ///
+        /// Singleton assignment.
+        ///
+        /// @param singleton Singleton of class.
+        ///
+        Singleton& operator = (const Singleton& singleton);
+
+    };
+
+    ///
+    /// Singleton instance.
+    ///
+    template<class T> T* Singleton<T>::_instance = nullptr;
+
+    ///
+    /// Singleton notation.
+    ///
+    #define singleton(T) friend Singleton<T>
+
+} // namespace JinEngine
+
+#endif // __JE_SINGLETON_H
\ No newline at end of file
-- 
cgit v1.1-26-g67d0