kuroko/test/testRacingThreads.krk

####
# Demonstration of how container access is currently broken
# by threads and needs reader/writer locks.
####
import os
if 'KUROKO_TEST_ENV' in os.environ:
    return 0

from fileio import open, stdin
from threading import Thread

let l = []
let d = {}
let stop = False

class Racer(Thread):
    def run(self):
        let myRando = open('/dev/urandom','rb')
        while not stop:
            let bytes = myRando.read(4)
            let choice = (bytes[0] << 24) | (bytes[1] << 16) | (bytes[2] << 8) | (bytes[3])
            if choice > 2147483647:
                l.append('test')
            else if l:
                l[choice % len(l)] += choice
            d[choice] = str(choice)

let racers = [Racer() for i in range(5)]

for racer in racers:
    racer.start()

print("Press enter to stop.")
stdin.readline()

stop = True

print("Waiting for threads...")
for racer in racers:
    racer.join()
print("Here's l:")
print(l)
print("Here's d:")
print(d)