50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
#ifndef ELASINGLETON_H
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#define ELASINGLETON_H
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#include <QMutex>
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template <typename T> class Singleton {
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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> T *Singleton<T>::getInstance() {
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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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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() { return Singleton<Class>::getInstance(); }
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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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static QMutex mutex; \
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QMutexLocker locker(&mutex); \
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if (_instance == nullptr) { \
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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 // ELASINGLETON_H
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