#include <>#include <>#include <string>#include <iostream>#include <>using namespace std;bool tools[5]; //全局变量，用餐工具CRITICAL_SECTION cs; //信号量, 在线程中使用，临界区class Philosopher{private:int number;int status; /*标记当前哲学家的状态,0表示正在等待(即处于饥饿状态),1表示得到两支筷子正在吃饭,2表示正在思考*/ public:Philosopher(int num=0): status(2), number(num) { }const int find(){return number;}const int getinfo(){ return status; }void Change() ; //状态改变函数void dead_lock();/////////void Philosopher::dead_lock(){EnterCriticalSection (&cs) ; //进入临界区string s;if(status==1){tools[number%5]=true;// tools[(number-1)%5]=true;status=2;}else if(status==2){status=0;//tools[(number-1)%5]=false;//tools[(number-1)%5]=true;}else if(status==0){tools[number%5]=false;tools[(number-1)%5]=false;status=1;}LeaveCriticalSection (&cs) ;// cout<<"*********";}/////////void Philosopher::Change(){EnterCriticalSection (&cs) ; //进入临界区if(status==1) //正在进餐{tools[number%5]=true; //放下左手工具tools[(number-1)%5]=true; //放下右手工具status=2; //改变状态为思考}else if(status==2) //思考中{status=0; //改变状态为等待}else if(status==0) //等待中{if(tools[number%5]&&tools[(number-1)%5]) //左右手两边工具均为空闲状态 {tools[number%5]=false; //拿起左手工具tools[(number-1)%5]=false; //拿起右手工具status=1;}LeaveCriticalSection (&cs) ;}string print(Philosopher *pA){//pA->Change();int i=pA->getinfo();string str;if(i==0)str="等待";else if(i==1)str="就餐";else str="思考";return str;}string toolstatus(bool a){string state;if(a==true)state="闲";if(a==false)state="用";return state;}int main(){char con='y'; //判断是否继续// con = 'n';for(int i=0;i<5;i++)tools[i]=true; //筷子都未使用，初始化Philosopher P1(1),P2(2),P3(3),P4(4),P5(5);InitializeCriticalSection (&cs) ; //初始化初始化临界区cout<<"-----------------------状态说明示意图：-----------------------"<<endl; cout<<" "<<"哲学家1号的状态"<<" "<<endl;cout<<" 筷子0的状态"<<" "<<"筷子1的状态"<<endl;cout<<"哲学家5号的状态"<<" "<<"哲学家2号的状态"<<endl;cout<<" 筷子4的状态"<<" "<<"筷子2的状态"<<endl;cout<<" 哲学家4号的状态"<<" "<<"哲学家3号的状态"<<endl;cout<<" "<<"筷子3的状态"<<endl;//cout<<" "<<"哲学家3号的状态"<<" "<<endl;cout<<"筷子的状态，用表示使用中，闲表示空闲中。

"<<endl;cout<<"--------------------------------------------------------------"<<endl; //cout<<"哲学家们开始生活："<<endl;//cout<<"当前状态：";cout<<endl;//cin>>con;while(con=='y')(); (); (); (); ();cout<<"当前状态为："<<endl;cout<<" "<<()<<print(&P1)<<" "<<endl;cout<<" "<<toolstatus(tools[0])<<" "<<toolstatus(tools[1])<<endl; cout<<" "<<()<<print(&P5)<<" "<<()<<print(&P2)<<endl;cout<<" "<<toolstatus(tools[4])<<" "<<toolstatus(tools[2])<<endl; cout<<" "<<()<<print(&P4)<<" "<<()<<print(&P3)<<endl;cout<<" "<<toolstatus(tools[3])<<endl;cout<<"--------------------------"<<endl;cout<<"若要继续下一状态，输入y；输入n进入死锁；输入其他，结束程序：";cin>>con;Sleep(20);}while(con=='n'){();(); (); (); ();cout<<"死锁情况"<<endl;cout<<" "<<()<<print(&P1)<<" "<<endl;cout<<" "<<toolstatus(tools[0])<<" "<<toolstatus(tools[1])<<endl; cout<<" "<<()<<print(&P5)<<" "<<()<<print(&P2)<<endl;cout<<" "<<toolstatus(tools[4])<<" "<<toolstatus(tools[2])<<endl; cout<<" "<<()<<print(&P4)<<" "<<()<<print(&P3)<<endl;cout<<" "<<toolstatus(tools[3])<<endl;cout<<"--------------------------"<<endl;cout<<"输入n继续；输入其他，结束程序：";cin>>con;Sleep(20);}DeleteCriticalSection (&cs) ; //退出资源区return 0;}。