Multitasking counter with thread locking

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examples/multitasking/counter_with_locking.py

import multitasking
import time
import threading


multitasking.set_max_threads(10)
counter = 0


locker = threading.Lock()


@multitasking.task
def count(n):
    global counter
    for _ in range(n):
        locker.acquire()
        counter += 1
        locker.release()


if __name__ == "__main__":
    start = time.time()
    k = 10
    n = 1000000
    for _ in range(k):
        count(n)
    multitasking.wait_for_tasks()
    end = time.time()
    expected = k * n
    print(f'done actual: {counter} expected: {expected}. Missing: {expected-counter}')
    print(f'Elapsed time {end-start}')

done actual: 10000000 expected: 10000000. Missing: 0
Elapsed time 37.231414556503296