线程pthread_cleanup_push的简单例程.

#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);
	}
	sleep(3);
	//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;
}