thread_example.c

/*thread_example.c :  c multiple thread programming in linux
  *author : falcon
  *E-mail : tunzhj03@st.lzu.edu.cn
  *原文地址：http://www.cnblogs.com/armlinux/archive/2010/05/28/2396997.html
  */
#include <pthread.h>
#include <stdio.h>
#include <sys/time.h>
#include <string.h>
#define MAX 10

pthread_t thread[2];
pthread_mutex_t mut;
int number=0, i;

void *thread1()
{
        printf ("thread1 : I'm thread 1\n");

        for (i = 0; i < MAX; i++)
        {
                printf("thread1 : number = %d\n",number);
                pthread_mutex_lock(&mut);
                number++;
                pthread_mutex_unlock(&mut);
                sleep(2);
        }


        printf("thread1 :主函数在等我完成任务吗？\n");
        pthread_exit(NULL);
}

void *thread2()
{
        printf("thread2 : I'm thread 2\n");

        for (i = 0; i < MAX; i++)
        {
                printf("thread2 : number = %d\n",number);
                pthread_mutex_lock(&mut);
                number++;
                pthread_mutex_unlock(&mut);
                sleep(10);
        }


        printf("thread2 :主函数在等我完成任务吗？\n");
        pthread_exit(NULL);
}

void thread_create(void)
{
        int temp;
        memset(&thread, 0, sizeof(thread));          //comment1
        /*创建线程*/
        if((temp = pthread_create(&thread[0], NULL, thread1, NULL)) != 0)  
        //comment2     
                printf("线程1创建失败!\n");
        else
                printf("线程1被创建\n");

        if((temp = pthread_create(&thread[1], NULL, thread2, NULL)) != 0)  
        //comment3
                printf("线程2创建失败");
        else
                printf("线程2被创建\n");
}

void thread_wait(void)
{
        /*等待线程结束*/
        if(thread[0] !=0)
        {    //comment4    
                pthread_join(thread[0],NULL);
                printf("线程1已经结束\n");
         }
        if(thread[1] !=0) 
        {  
                //comment5
                pthread_join(thread[1],NULL);
                printf("线程2已经结束\n");
        }
}

int main()
{
    /*用默认属性初始化互斥锁*/
    // int a=1;long int b=2;//linux 32下int与long int均为4字节
    // printf("%d\n", sizeof(a));
    // printf("%d\n", sizeof(b));
    pthread_mutex_init(&mut,NULL);

    printf("我是主函数哦，我正在创建线程，呵呵\n");
    thread_create();
    printf("我是主函数哦，我正在等待线程完成任务阿，呵呵\n");
    thread_wait();

    return 0;
}