C++ 单例模式示例

java的参考 https://blog.youkuaiyun.com/zhengzhb/article/details/7331369

#include <iostream>

using namespace std;
class TService
{
public:
    static TService _service;
    static TService getInstance()
    {
        return _service;        
    }

    void exec()
    {
        cout << "do something...." << endl;        
    }
};

int main()
{
    cout << "enter" << endl;

    TService service = TService::getInstance(); 
    service.exec();

    cout << "exit" << endl;
    return 0;
}

执行结果

PS E:\workspace\sample\Singleton> g++ main.cpp
PS E:\workspace\sample\Singleton> ./a
enter
do something....
exit