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

void clean(void *arg)
{
	printf("clean\n");
}

void *thr_routine(void *arg)
{
	sigset_t set;

	sigemptyset(&set);
	sigaddset(&set, SIGUSR1);
	pthread_cleanup_push(clean, NULL);
	sigsuspend(&set);
	pthread_cleanup_pop(0);
}

int main()
{
	pthread_t td;
	void *result;

	pthread_create(&td, NULL, thr_routine, NULL);
	sleep(1);
	pthread_cancel(td);
	pthread_join(td, &result);	
	printf("%d\n", (int)result);
}