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#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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