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| //扩展作业--参数传递 //思路: 当子线程退出的时候,pthread_exit((void *)88)--->传递给主线程 pthread_join(tid,(void *)&ret1) //函数---参数 #include <pthread.h> #include <stdio.h> #include <unistd.h> #include <stdlib.h> #include <string.h> void *task1(void *arg) //子线程1的任务 { int task1_arg = *(int *)arg; sleep(3); printf("task1 comming\r\n"); printf("arg = %d\r\n",task1_arg); pthread_exit((void *)88); //pthread_exit(void *retval); } void *task2(void *arg) //子线程2的任务 { int task2_arg = *(int *)arg; printf("task2 comming\r\n"); printf("arg = %d\r\n",task2_arg); //pthread_exit((void *)100); pthread_exit("hello world!\n"); } int main(void) { int task1_arg = 6, task2_arg = 8; int ret1; int ret2; void *thread_rs; //创建对应的线程 pthread_t tid1 , tid2; pthread_create(&tid1,NULL,task1,&task1_arg); pthread_create(&tid2,NULL,task2,&task2_arg); //作用：等待对应的子进程运行结束pthread_join(pthread_t thread,void **retval) pthread_join(tid1,(void *)&ret1); printf("ret1 = %d\r\n",(int)ret1); //pthread_join(tid2,(void *)&ret2); //printf("ret2 = %d\r\n",(int)ret2); pthread_join(tid2,&thread_rs); printf("thread finished value:%s\n",(char *)thread_rs); sleep(1); exit(0); } 
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线程字符串传递方式
ST小智2023-07-29 20:01