How can I implement a semaphore in my application?

How can I implement a semaphore in my application?

To implement a semaphore, you can use the Semaphore class in your programming language's threading library. Which language are you using?

I'm using Python. Can you provide a code example?

Sure! Here's a simple example using Python's threading module:

import threading

# Create a semaphore with a limit of 2
semaphore = threading.Semaphore(2)

def worker():
    with semaphore:
        print('Worker is accessing the resource.')
        # Simulate some work
        time.sleep(1)
        print('Worker is releasing the resource.')

# Create multiple threads
threads = [threading.Thread(target=worker) for _ in range(5)]

# Start the threads
for thread in threads:
    thread.start()

# Wait for all threads to complete
for thread in threads:
    thread.join()

What does the semaphore do in this example?

In this example, the semaphore allows up to 2 threads to access the resource simultaneously. If more than 2 threads try to access it, they will wait until one of the threads releases the semaphore.