Linux--多线程之线程连接pthread_join

来源：互联网发布：mac怎么打拼音编辑：程序博客网时间：2024/06/03 20:21
#include "apue.h"/**1.main函数的线程称为初始线程或主线程，主线程在main函数返回的时候，会导致整个线程结束。可以在主线程中使用pthread_exit函数 退出主线程 如此，进程会等待所有的线程结束时候才终止当一个线程被pthread_join之后 另外一个线程不能再pthread_join它*/struct person{int age;char name[10];};void *thread_fun(void *person1){int i;for(i=0;i<5;i++){printf("fun1 age =%d name=%s \n",((struct person*)person1)->age,((struct person*)person1)->name);sleep(1);}printf(" fun 1  ended\n");return (void *)1;}void *thread_fun2(void *person1){int i;for(i=0;i<5;i++){printf("fun2 age =%d name=%s \n",((struct person*)person1)->age,((struct person*)person1)->name);sleep(2);}printf(" fun 2  ended\n");return (void *)2;} int main(){pthread_t tid1,tid2;int err1,err2;//初始化结构体1struct person per;per.age = 20;strcpy(per.name,"liu pan");//初始化结构体2struct person per2;per2.age = 18;strcpy(per2.name,"li si");//创建线程err1 = pthread_create(&tid1,NULL,thread_fun,&per);err2 = pthread_create(&tid2,NULL,thread_fun2,&per2);if(err1||err2){//err1或者err2不等于0时perror(" fail to create thread ");return -1;}printf("success to create thread err1 =%d err2 =%d\n ",err1,err2);printf("pid1 = %lu  tid2 =  %lu \n",tid1,tid2);//连接线程void *rval,*rval2;    pthread_join(tid1,&rval);pthread_join(tid2,&rval2);printf("rval = %d  rval2 =  %d \n",(int)rval,(int)rval2);//打印线程函数返回值printf("start to quit main thread \n ");//主线程退出pthread_exit(NULL);//always succeeds}
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