48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
#ifndef CPR_SINGLETON_H
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#define CPR_SINGLETON_H
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#include <mutex>
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#ifndef CPR_DISABLE_COPY
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#define CPR_DISABLE_COPY(Class) \
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Class(const Class&) = delete; \
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Class& operator=(const Class&) = delete;
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#endif
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#ifndef CPR_SINGLETON_DECL
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#define CPR_SINGLETON_DECL(Class) \
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public: \
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static Class* GetInstance(); \
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static void ExitInstance(); \
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private: \
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CPR_DISABLE_COPY(Class) \
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static Class* s_pInstance; \
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static std::mutex s_mutex;
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#endif
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#ifndef CPR_SINGLETON_IMPL
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#define CPR_SINGLETON_IMPL(Class) \
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Class* Class::s_pInstance = nullptr; \
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std::mutex Class::s_mutex; \
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Class* Class::GetInstance() { \
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if (s_pInstance == nullptr) { \
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s_mutex.lock(); \
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if (s_pInstance == nullptr) { \
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s_pInstance = new Class; \
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} \
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s_mutex.unlock(); \
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} \
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return s_pInstance; \
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} \
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void Class::ExitInstance() { \
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s_mutex.lock(); \
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if (s_pInstance) { \
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delete s_pInstance; \
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s_pInstance = nullptr; \
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} \
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s_mutex.unlock(); \
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}
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#endif
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#endif
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