From 7d5f055547e70fa93ee9ac944e62f8d657b9dc55 Mon Sep 17 00:00:00 2001 From: chai Date: Fri, 19 Oct 2018 08:36:44 +0800 Subject: =?UTF-8?q?*=E4=BF=AE=E6=94=B9=E6=96=87=E4=BB=B6=E5=90=8D?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- src/libjin/Common/je_singleton.hpp | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 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..12b1450 --- /dev/null +++ b/src/libjin/Common/je_singleton.hpp @@ -0,0 +1,37 @@ +#ifndef __LIBJIN_SINGLETON_H +#define __LIBJIN_SINGLETON_H + +namespace jin +{ + + template + 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() {}; + static T* _instance; + private: + Singleton(const Singleton&); + Singleton& operator = (const Singleton&); + }; + + template T* Singleton::_instance = nullptr; + +#define singleton(T) friend Singleton + +} // namespace jin + +#endif // __LIBJIN_SINGLETON_H \ No newline at end of file -- cgit v1.1-26-g67d0