*misc

1 files changed, 59 insertions, 0 deletions

diff --git a/source/libs/asura-lib-utils/singleton.hpp b/source/libs/asura-lib-utils/singleton.hpp
new file mode 100644
index 0000000..0d2777e
--- /dev/null
+++ b/source/libs/asura-lib-utils/singleton.hpp
@@ -0,0 +1,59 @@
+#ifndef __ASURA_SINGLETON_H__
+#define __ASURA_SINGLETON_H__
+
+#include "utils_config.h"
+
+namespace AsuraEngine
+{
+
+	///
+	/// �̳�Singleton�����ڵ�һ��ʵ����ʱ����ʵ����֮������ٴ�ʵ�����ᱨ����
+	/// 
+	template<class T>
+	class Singleton
+	{
+	public:
+
+		static T* Get()
+		{
+			// ���֮ǰû�д�������������������һ��������
+			if (!instance) instance = new T;
+			// ����ʵ��
+			return instance;
+		}
+
+		static void Destroy()
+		{
+			delete instance;
+			instance = nullptr;
+		}
+
+	protected:
+
+		Singleton()
+		{
+			// �����instance����ζ���ִ�����һ��ʵ�������Ǵ���ġ�
+			ASSERT(!instance);
+			// ���򣬽���ʵ����Ϊʵ��
+			instance = static_cast<T*>(this);
+		};
+
+		virtual ~Singleton() {};
+
+		static T* instance;
+
+	private:
+
+		Singleton(const Singleton& singleton);
+
+		Singleton& operator = (const Singleton& singleton);
+
+	};
+
+	// ʵ����ʼ��Ϊ��
+	template<class T>
+	T* Singleton<T>::instance = nullptr;
+
+}
+
+#endif // __ASURA_SINGLETON_H__
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