30 lines
552 B
C++
30 lines
552 B
C++
#pragma once
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#include "common.hpp"
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class SingletonA // 懒汉式，线程不安全，空间换时间
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{
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private:
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SingletonA() {} // 构造函数私有化保证对象不会在类外被创建
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SingletonA(SingletonA&) = delete;
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SingletonA& operator=(const SingletonA&) = delete;
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static SingletonA* m_pInstance;
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public:
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static SingletonA* getInstance();
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};
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class SingletonB // 饿汉式，线程安全，时间换空间
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{
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private:
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SingletonB() {}
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SingletonB(SingletonB&) = delete;
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SingletonB& operator=(const SingletonB&) = delete;
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public:
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static SingletonB* getInstance();
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};
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