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

int flag; /* shared variable */

pthread_mutex_t m;
pthread_cond_t c;

void *threadone(void *arg)
{
	pthread_mutex_lock(&m);
	while(flag != 1) pthread_cond_wait(&c, &m);
	pthread_mutex_unlock(&m);
	puts("one");
	return(arg);
}
void *threadtwo(void *arg)
{
	puts("two");
	pthread_mutex_lock(&m);
	flag = 1;
	pthread_cond_broadcast(&c);
	pthread_mutex_unlock(&m);
	return(arg);
}

int main(void)
{
	pthread_t threadid[2];
	pthread_mutex_init(&m, 0);
	pthread_cond_init(&c, 0);
	pthread_create(&threadid[0], 0, threadone, 0);
	pthread_create(&threadid[1], 0, threadtwo, 0);
	pthread_join(threadid[0], 0);
	pthread_join(threadid[1], 0);
	pthread_mutex_destroy(&m);
	pthread_cond_destroy(&c);
	return(0);
}