/*
 * CS170: preempt2.c
 * adapted from code by Jim Plank
 */

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



void *infloop(void *x)
{
	double f;
	int i, j, *id;
 
	id = (int *) x;

	i = 0;
	for (i = 0; i >= 0; i++) 
	{
		printf("thread %d.  i = %10d\n", *id, i);
		f = 1;
		for (j = 0; j < 50000; j++) 
		{
			f = f*.99;
		}
		i++;
	}
	return NULL;
}

int
main()
{
	pthread_t t[2];
	pthread_attr_t attr[2];
	int id[2], i;
	void *retval;

	for (i = 0; i < 2; i++) 
	{
		id[i] = i;
		pthread_attr_init(&(attr[i]));
		pthread_attr_setscope(&(attr[i]), PTHREAD_SCOPE_SYSTEM);
		pthread_create(&(t[i]), &(attr[i]), infloop, (void *)(&id[i]));
  	}
	for (i = 0; i < 2; i++) 
	{
		pthread_join(t[i], &retval);
	}

	return(0);
}