roundrobin.py

import time
from multiprocessing import Process

def fun(t):
	time.sleep(t)
burst=[8,2,6,3]
burst2=[8,2,6,3]
arrival=[0,1,2,3]
finish=[0,0,0,0]
quantum=4
n=len(burst)
t0=time.time()

while 1:
	flag=0
	print("burst2 is ",burst2)
	for i in range(0,n):
		t1=time.time()
		if arrival[i]<=(t1-t0) and burst2[i]>0:
			p=Process(target=fun,args=(min(burst2[i],quantum),))
			t2=time.time()
			p.start()
			p.join()
			t3=time.time()
			flag=1
			#burst[i]=burst[i]-t3+t2
			burst2[i]=burst2[i]-min(burst2[i],quantum)
			if burst2[i]==0:
				finish[i]=t3-t0
	if flag==0:
		break
avwt=0
wt=[0]*n
for i in range(0,n):
	wt[i]=finish[i]-arrival[i]-burst[i]
	avwt+=(wt[i])
avwt=avwt/n
print("average wt is ",avwt)