C++中的Singleton类的实现

class CSingletonStaticObj

{

private:

static CSingletonStaticObj m_instance;

protected:

CSingletonStaticObj();

CSingletonStaticObj(const CSingletonStaticObj&);

public:

virtual ~CSingletonStaticObj(); //must public

static CSingletonStaticObj& GetInstance();

void Test();

};

对应的 SingleStaticObj.cpp 文件为：

#include "SingletonStaticObj.h"

#include <string>

#include <iostream>

using namespace std;

CSingletonStaticObj CSingletonStaticObj::m_instance;

CSingletonStaticObj::CSingletonStaticObj()

{

cout << "CSingletonStaticObj::CSingletonStaticObj()" << endl;

}

CSingletonStaticObj::~CSingletonStaticObj()

{

cout << "CSingletonStaticObj::~CSingletonStaticObj()" << endl;

}

CSingletonStaticObj& CSingletonStaticObj::GetInstance()

{

return m_instance;

}

void CSingletonStaticObj::Test()

{

cout << "CSingletonStaticObj::Test()" << endl;

}

CSingletonStaticObj& singleton = CSingletonAutoPtr::GetInstance();

singleton.Test();