线程互斥及基于线程锁的抢票程序

我们实现一个简单的多线程抢票程序。

#include<iostream>
#include<thread>
#include<unistd.h>
#include<functional>
#include<vector>
using namespace std;
template<class T>
using func_t=function<void(T)>;//返回值为void,参数为T
template<class T>
class Thread
{public:Thread(func_t<T> func,const string&name,T data):_tid(0),_func(func),_threadname(name),isrunning(false),_data(data){}static void*ThreadRoutine(void*args){//(void)args;//仅仅是为了防止编译器有告警Thread*ts=static_cast<Thread*>(args);ts->_func(ts->_data);return nullptr;}bool Start(){int n=pthread_create(&_tid,nullptr,ThreadRoutine,this);if(n==0){isrunning=true;return true;}return false;}bool Join(){if(!isrunning) return true;int n=pthread_join(_tid,nullptr);if(n==0){isrunning=false;return true;}return false;}string GetThreadName(){return _threadname;}bool IsRunning(){return isrunning;}~Thread(){}private:pthread_t _tid;string _threadname;bool isrunning;func_t<T> _func;T _data;
};

#include"test.hpp"
using namespace std;
string GetThreadName()
{static int number=1;char name[64];snprintf(name,sizeof name,"Thread - %d",number++);return name;
}
void print(int num)
{while(num--){cout<<"hello world"<<num<<endl;sleep(1);}
}
int ticket=100;
void GetTicket(string name)
{while(true){if(ticket>0){usleep(1000);printf("%s get a ticket %d\n",name.c_str(),ticket--);}elsebreak;}}
int main()
{int num=5;//vector<Thread<int>> Threads;string name1=GetThreadName();string name2=GetThreadName();string name3=GetThreadName();string name4=GetThreadName();Thread<string> t1(GetTicket,name1,name1);Thread<string> t2(GetTicket,name2,name2);Thread<string> t3(GetTicket,name3,name3);Thread<string> t4(GetTicket,name4,name4);t1.Start();t2.Start();t3.Start();t4.Start();t1.Join();t2.Join();t3.Join();t4.Join();// while(num--)// {//     Threads.push_back(Thread<int>(print,GetThreadName(),10));// }// for(auto &t:Threads)// {//     cout<<t.GetThreadName()<<" is running? "<<t.IsRunning()<<endl;// }// for(auto&t:Threads)// {//     t.Start();// }// for(auto &t:Threads)// {//     cout<<t.GetThreadName()<<" is running? "<<t.IsRunning()<<endl;// }// for(auto &t:Threads)// {//     t.Join();// }// Thread t(print,GetThreadName());// cout<<"Is thread running?"<<t.IsRunning()<<endl;// t.Start();// cout<<"Is thread running?"<<t.IsRunning()<<endl;// t.Join();return 0;
}