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Diffstat (limited to 'source/modules/asura-utils/Singleton.hpp')
-rw-r--r-- | source/modules/asura-utils/Singleton.hpp | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/source/modules/asura-utils/Singleton.hpp b/source/modules/asura-utils/Singleton.hpp new file mode 100644 index 0000000..9bb7336 --- /dev/null +++ b/source/modules/asura-utils/Singleton.hpp @@ -0,0 +1,59 @@ +#ifndef _ASURA_SINGLETON_H_ +#define _ASURA_SINGLETON_H_ + +#include "UtilsConfig.h" + +namespace AsuraEngine +{ + + /// + /// ̳Singletonڵһʵʱʵ֮ٴʵᱨ + /// + template<class T> + class Singleton + { + public: + + static T* Get() + { + // ֮ǰûдһ + if (!instance) instance = new T; + // ʵ + return instance; + } + + static void Destroy() + { + delete instance; + instance = nullptr; + } + + protected: + + Singleton() + { + // instanceζִһʵǴġ + ASSERT(!instance); + // ʵΪʵ + instance = static_cast<T*>(this); + }; + + virtual ~Singleton() {}; + + static T* instance; + + private: + + Singleton(const Singleton& singleton); + + Singleton& operator = (const Singleton& singleton); + + }; + + // ʵʼΪ + template<class T> + T* Singleton<T>::instance = nullptr; + +} + +#endif // _ASURA_SINGLETON_H_
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