4-4cancel.c

#include <stdio.h>
#include <pthread.h>

#define errlog(errmsg) do{perror(errmsg);\
						  printf("--%s--%s--%d--\n",\ 
								  __FILE__, __FUNCTION__, __LINE__);\
						  return -1;\
						 }while(0)
void *thread_handler(void *arg){
	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
	while(1){
		printf("thread...\n");
		sleep(1);
	}
	pthread_exit(0);
}

int main(int argc, const char *argv[])
{
	pthread_t thread;
	void *retval;
	if(pthread_create(&thread, NULL, 
				thread_handler, NULL) != 0){
		errlog("pthread_create1 error");
	}

	sleep(3);
	pthread_cancel(thread);

	pthread_join(thread, NULL);
	return 0;
}