import random
import threading
import time

import matplotlib.pyplot as plt


def add(wait=0.0):
    global glob

    tmp = glob
    time.sleep(wait)

    LOCK_console.acquire()
    print(f"{tmp} <- {tmp + 1}")
    LOCK_console.release()

    results.append(tmp + 1)
    glob = tmp + 1


glob = 0
n = 100

LOCK_console = threading.Lock()
LOCK_glob = threading.Lock()

threads = []
results = []
for i in range(n):
    rnd = random.randint(0, 1) / random.randint(1, 100)
    threads.append(threading.Thread(target=add, args=(rnd,)))
    threads[i].start()

while len(threads) != 0:
    thread = threads.pop()
    thread.join()

fig, ax = plt.subplots()
ax.plot(
    range(n),
    results
)

ax.set(
    xlabel="Thread",
    ylabel="Value",
    title="Race-Condition: Increment",
    ylim=(0, 100)
)
ax.grid(True)

plt.show()
print(f"{0} + {n} = {n} =? {glob}")