linux 线程练习

来源：互联网发布：网络老虎机熊猫机器编辑：程序博客网时间：2024/09/21 06:19

#include <unistd.h>#include <sys/types.h>#include <pthread.h>#include <stdlib.h>#include <stdio.h>#include <errno.h>#include <string.h>#define ERR_EXIT(m) \        do \        { \                perror(m); \                exit(EXIT_FAILURE); \        } while(0)void* thread_routine(void *arg){int i;        for (i=0; i<20; i++)        {                printf("B");                fflush(stdout);usleep(20);/*if (i==3)pthread_exit("ABC");*/        }sleep(3);return "DEF";}int main(void){pthread_t tid;int ret;if ((ret = pthread_create(&tid, NULL, thread_routine, NULL)) != 0){fprintf(stderr, "pthread_create:%s\n", strerror(ret));exit(EXIT_FAILURE);}int i;for (i=0; i<20; i++){printf("A");fflush(stdout);usleep(20);}void *value;if ((ret = pthread_join(tid, &value)) != 0){fprintf(stderr, "pthread_join:%s\n", strerror(ret));exit(EXIT_FAILURE);}printf("\n");printf("return msg=%s\n", (char*)value);return 0;}

0 0