90 lines
1.6 KiB
C++
90 lines
1.6 KiB
C++
#ifndef __FLYPATTERN_PATTERN_H__
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#define __FLYPATTERN_PATTERN_H__
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#include <mutex>
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#include <vector>
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using namespace std;
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// 抽象享元类
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class NetDevice
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{
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public:
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NetDevice(){}
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virtual ~NetDevice(){}
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virtual string getName() = 0;
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/*void print(){
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printf("NetDevice :%s\n",getName().c_str());
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}*/
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void print(int portNum){
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printf("NetDevice :%s port: %d\n", getName().c_str(), portNum);
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}
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};
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// 具体享元类:集线器
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class Hub :public NetDevice
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{
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public:
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Hub(){}
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string getName(){
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return "集线器";
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}
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};
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// 具体享元类:交换机
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class Switch :public NetDevice
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{
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public:
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Switch(){}
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string getName(){
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return "交换机";
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}
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};
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// 享元工厂类
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class NetDeviceFactory
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{
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public:
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NetDevice* getNetDevice(char ch){
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if (ch == 'S'){
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return devicePool[1];
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}
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else if (ch == 'H'){
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return devicePool[0];
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}
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else{
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printf("wrong input!\n");
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}
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return NULL;
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}
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// 单例模式：返回享元工厂类的唯一实例
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static NetDeviceFactory* getFactory(){
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if (instance == NULL){
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m_mutex.lock();
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if (instance == NULL){
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instance = new NetDeviceFactory();
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}
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m_mutex.unlock();
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}
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return instance;
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}
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private:
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NetDeviceFactory(){
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Hub *hub = new Hub();
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Switch *switcher = new Switch();
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devicePool.push_back(hub);
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devicePool.push_back(switcher);
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}
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static NetDeviceFactory* instance;
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static std::mutex m_mutex;
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// 共享池：用一个vector来表示
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vector<NetDevice*> devicePool;
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};
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NetDeviceFactory* NetDeviceFactory::instance = NULL;
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std::mutex NetDeviceFactory::m_mutex;
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#endif //__FLYPATTERN_PATTERN_H__
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