55 lines
859 B
Python
55 lines
859 B
Python
import random
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import threading
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import time
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import matplotlib.pyplot as plt
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def add(wait=0.0):
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global glob
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tmp = glob
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time.sleep(wait)
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LOCK_console.acquire()
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print(f"{tmp} <- {tmp + 1}")
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LOCK_console.release()
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results.append(tmp + 1)
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glob = tmp + 1
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glob = 0
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n = 100
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LOCK_console = threading.Lock()
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LOCK_glob = threading.Lock()
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threads = []
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results = []
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for i in range(n):
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rnd = random.randint(0, 1) / random.randint(1, 100)
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threads.append(threading.Thread(target=add, args=(rnd,)))
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threads[i].start()
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while len(threads) != 0:
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thread = threads.pop()
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thread.join()
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fig, ax = plt.subplots()
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ax.plot(
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range(n),
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results
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)
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ax.set(
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xlabel="Thread",
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ylabel="Value",
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title="Race-Condition: Increment",
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ylim=(0, 100)
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)
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ax.grid(True)
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plt.show()
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print(f"{0} + {n} = {n} =? {glob}")
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