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gil in python

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YOU.com answered on April 18, 2022 Popularity 10/10 Helpfulness 4/10

answer gil in python

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gil in python

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# GIL stands for Global Interpreter Lock in Python.
# It is a mechanism used in CPython (the standard implementation of Python) to synchronize access to Python objects, preventing multiple native threads from executing Python bytecodes at once.

# Since the GIL limits the parallelism of Python code execution, it can sometimes be a bottleneck for programs that heavily rely on multithreading or multiprocessing.

# Here's a simple example of using the threading module in Python to demonstrate the effect of GIL:

import threading

counter = 0

def increment():
    global counter
    for _ in range(1000000):
        counter += 1

# Create two threads that increment the counter
thread1 = threading.Thread(target=increment)
thread2 = threading.Thread(target=increment)

# Start the threads
thread1.start()
thread2.start()

# Wait for both threads to finish
thread1.join()
thread2.join()

# At the end, the value of the counter may not be the expected 2000000 due to the GIL.
print("Counter:", counter)

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Contributed on Sep 11 2023

YOU.com

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import multiprocessing

def worker(num):
    """Thread worker function"""
    print(f'Worker: {num}')
    return

if __name__ == '__main__':
    jobs = []
    for i in range(5):
        p = multiprocessing.Process(target=worker, args=(i,))
        jobs.append(p)
        p.start()

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Contributed on Jun 10 2024

Xabos

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gil python

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# https://wiki.python.org/moin/GlobalInterpreterLock has related information on Global Interpreter Lock

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Contributed on Apr 18 2022

CompSciGeek

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GIL python

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-1

GIL

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Contributed on Dec 05 2023

Xerothermic Xenomorph

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gil in python

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