#include <iostream> class Singleton{ private: Singleton(){ std::cout<<"constructor called!"<<std::endl; } Singleton(Singleton&)=delete; Singleton& operator=(const Singleton&)=delete; static Singleton* m_instance_ptr; public: ~Singleton(){ std::cout<<"destructor called!"<<std::endl; } ...
class Singleton{ public: static Singleton *GetInstance(); int data; protected: private: static Singleton instance; Singleton(); ~Singleton(); // 将其拷贝构造和赋值构造成为私有函数, 禁止外部拷贝和赋值 Singleton(const Singleton&); Singleton &operator=(const Singleton&); ...
#include <iostream>usingnamespacestd;classSingleton{public:staticSingleton& getInstance(void){returns_instance; }voidprint(void) { cout<<m_data<<endl; }private: Singleton(intdata =0):m_data(data){ cout<<"单例被创建"<<endl; }; Singleton(constSingleton&);intm_data;staticSingleton s_instance...
* the function pointers SingletonDynamic<T>::pfnLockMutex, SingletonDynamic<T>::pfnUnlockMutex * and SingletonDynamic<T>::pfnMemoryBarrier. The member function pointers are initialized by * default to point to placeholder functions that do not perform any function. The derived class * must provid...
public class Singleton { 代码语言:javascript 代码运行次数:0 运行 AI代码解释 privatestaticSingleton instance;privateSingleton(){}publicstaticSingletongetInstance(){if(instance==null){instance=newSingleton();}returninstance; 优点:
classsingleton{private:singleton(){pthread_mutex_init(&mutex);}staticsingleton*p;staticpthread_mutex_t mutex;public:staticsingleton*initance(){if(p==NULL)//p != NULL,说明对象已经创建出来了,直接返回对象的指针,没必要在加锁解锁浪费时间。{pthread_mutex_lock(&mutex);if(p==NULL){p=newsingleton(...
class Singleton { private: Singleton() {} Singleton(Singleton& s); Singleton& operator=(Singleton& s); public: static Singleton*& GetInstance() { if(_instance == NULL) { _instance = new Singleton(); } return _instance; } ~Singleton() ...
class Singleton { private: static Singleton instance; private: Singleton() = default; publ...
要实现一个Singleton Class, 至少需要做以下四个步骤: 1. 为Singleton Object实现一个静态实例, 初始化, 然后设置成nil. 2. 实现一个实例构造方法(通常命名为 sharedInstance 或者 sharedManager)检查上面声名的静态实例是否为nil, 如果是则新建并返回一个本类实例. ...
instance = new SingletonPattern1();这一块可以扩展，直接创建类，也可以创建借口，或直接载入dll等 单例模式是我们学习设计模式的第一课，这个代码已经无懈可击了，代码参考 using System; namespace SingletonPattern { public class SingletonPattern1 { /// ///单例锁对象 /// private static...