#!/usr/bin/python

import subprocess
import random
import math

def kernel_scale (rtime, total, stime):
	p = subprocess.Popen("./scale_stime " + str(rtime) + " " + str(total) + " " + str(stime) , shell=True, stdout=subprocess.PIPE)
	return int(p.stdout.read())

def python_scale (rtime, total, stime):
	return (stime * rtime) / total


max_rtime = 364*24*60*60*1000  # 1 year (on one thread) 

fail=False

for i in range(0, 100):
	rtime = random.randrange(max_rtime)
	total = int(random.uniform(0.7, 1.3) * rtime)

	for n in range(1, 11):
		stime = (n * total / 10)
		r1 = kernel_scale(rtime, total, stime)
		r2 = python_scale(rtime, total, stime)
		if abs(r1 - r2) > 1:
			print "FAIL!"
			print "rtime: " + str(rtime)
			print "total: " + str(total)
			print "stime: " + str(stime)
			print "kernel: " + str(r1)
			print "python: " + str(r2)

			fail=True
			break
	if fail:
		break;