err=pthread_cancel(tid1);

#include<stdlib.h>#include<stdio.h>#include<unistd.h>#include<pthread.h>void clean_fun1(void * arg){    printf("this is clean fun1\n");}void clean_fun2(void * arg){    printf("this is clean fun2\n");}void * thread_fun(void * arg){    pthread_cleanup_push(clean_fun1,NULL);    pthread_cleanup_push(clean_fun2,NULL);    sleep(100);    //这里要注意,如果将sleep(100);换成while(1);的话,程序会一直暂停.push和pop要成对出现.    //因为while(1);运行的太快,线程不接受cancel信号    //while(1);    pthread_cleanup_pop(0);    pthread_cleanup_pop(0);    return NULL;}int main(){    pthread_t tid1;    int err;    err=pthread_create(&tid1,NULL,thread_fun,NULL);    if(err!=0)    {        perror("pthread_create");        exit(0);    }        //printf("test\n");    err=pthread_cancel(tid1);    if(err!=0)    {        perror("cancel error:");        exit(0);    }    err=pthread_join(tid1,NULL);    if(err!=0)    {        perror("pthread_join  error:");        exit(0);    }         return 0;}/*this is clean fun2this is clean fun1*/