#include<pthread.h>
#include<stdio.h>
int signal;
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
void consumer()
{
	pthread_mutex_lock(&mutex);
	if(signal==0)
	{
		printf("It is not my turn let me sleep\n");
		pthread_cond_wait(&cond,&mutex);
		printf("I got signal to do the work\n");
	}
	pthread_mutex_unlock(&mutex);
}
void producer()
{
	pthread_mutex_lock(&mutex);
	printf("Resources locked\n");
	signal=1;
	if(signal==1)
	{
		pthread_cond_signal(&cond);
	}
	pthread_mutex_unlock(&mutex);
}
 
int main()
{
	pthread_t t1, t2;
	int status1, status2;
	status1=pthread_create(&t1, NULL, (void*)consumer, NULL);
	status2=pthread_create(&t2, NULL, (void*)producer, NULL);
	pthread_join (t1,NULL);
	pthread_join (t2, NULL);
	return 0;
}

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