60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
#ifndef SINGLETON_H
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#define SINGLETON_H
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#include <QMutex>
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template <typename T>
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class Singleton
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{
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public:
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static T* getInstance();
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private:
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Q_DISABLE_COPY(Singleton)
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};
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template <typename T>
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T* Singleton<T>::getInstance()
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{
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static QMutex mutex;
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QMutexLocker locker(&mutex);
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static T* instance = nullptr;
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if (instance == nullptr)
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{
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instance = new T();
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}
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return instance;
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}
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#define Q_SINGLETON_CREATE(Class) \
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private: \
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friend class Singleton<Class>; \
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\
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public: \
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static Class* getInstance() \
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{ \
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return Singleton<Class>::getInstance(); \
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}
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#define Q_SINGLETON_CREATE_H(Class) \
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private: \
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static Class* _instance; \
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\
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public: \
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static Class* getInstance();
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#define Q_SINGLETON_CREATE_CPP(Class) \
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Class* Class::_instance = nullptr; \
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Class* Class::getInstance() \
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{ \
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static QMutex mutex; \
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QMutexLocker locker(&mutex); \
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if (_instance == nullptr) \
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{ \
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_instance = new Class(); \
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} \
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return _instance; \
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}
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#endif // SINGLETON_H
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