C实现多线程

Posted 2020-07-01 LarryKnight

#include <stdio.h>
#include <pthread.h>
#include <unistd.h>
#include <iostream>
using namespace std;

pthread_t thread[2];       //线程函数返回值
pthread_mutex_t mut;   //互斥锁
int cnt=0;

void *thread1(void* args) 
{
     cout<<"T1 Start!"<<endl;  
    
     for (int i = 0; i < 10; i++)
    {   
          pthread_mutex_lock(&mut);      //加锁，保护共享资源
          cnt++;
          pthread_mutex_unlock(&mut);  //解锁
          sleep(1);
     }   
     cout<<"T1 Wait!"<<endl;
     pthread_exit(NULL);
}

void *thread2(void* args)
{
     cout<<"T2 Start!"<<endl;  
    
     for (int i = 0; i < 10; i++)
     {   
           pthread_mutex_lock(&mut);      //加锁，保护共享资源
           cnt++;
           pthread_mutex_unlock(&mut);  //解锁
           sleep(1);
      }   
      cout<<"T2 Wait!"<<endl;
      pthread_exit(NULL);
}

void thread_create(void)
{
     pthread_create(&thread[0], NULL, thread1, NULL);
     cout<<"T1 Create!"<<endl;
     pthread_create(&thread[1], NULL, thread2, NULL);
     cout<<"T2 Create!"<<endl;
}

void thread_wait(void)
{
     pthread_join(thread[0],NULL);
     cout<<"T1 Done!"<<endl;
     pthread_join(thread[1],NULL);
     cout<<"T1 Done!"<<endl;
}

int main()
{
     pthread_mutex_init(&mut,NULL);  
     thread_create();
     thread_wait();

     return 0;
}