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

volatile int flagW; /*let worker know to complete */


void *thread_worker(void* arg)
{
	printf("Worker about to signal to main thread\n");
	flagW = 1; 
	pthread_exit(NULL);
}


void create_thread(pthread_t *thread, void*(*func)(void*), int prio)
{
	pthread_attr_t attr;
	struct sched_param param;

	param.sched_priority = sched_get_priority_min(SCHED_FIFO) + prio;

	pthread_attr_init(&attr);
	pthread_attr_setinheritsched (&attr, PTHREAD_EXPLICIT_SCHED);
	pthread_attr_setschedparam(&attr, &param);
	pthread_attr_setschedpolicy(&attr, SCHED_FIFO);

	if (pthread_create(thread, &attr, func, (void *)0)) {
		perror("pthread_create failed");
		exit(99);
	}
	
	pthread_attr_destroy(&attr);
}


int main(void)
{
	pthread_t worker, interrupter;
	
	create_thread(&worker, thread_worker, 10);
	for (;flagW == 0;) { 
		
	}

	return 0;
}