Hello Python and multithreading enthusiasts,
I am working on a challenging scenario where I have a shared tuple with all immutable elements, that is frequently iterated by multiple reading threads. Occasionally, this tuple is replaced by a single thread. I don t need guaranteed immediate replacement in the reading threads.
根据我们的要求,似乎在没有任何问题的情况下工作的守则:
import threading
import time
# Shared tuple
my_tuple = (1, 2, 3, 4, 5)
# Function for thread to iterate over the tuple
def iterate_tuple():
for element in my_tuple:
print(f"Thread {threading.current_thread().name} - Element: {element}")
time.sleep(5)
# Function for another thread to replace the tuple
def replace_tuple():
global my_tuple
print("Tuple updated")
my_tuple = (6, 7, 8, 9, 10)
# Create and start the first iterating thread
iterating_thread = threading.Thread(target=iterate_tuple)
iterating_thread.start()
# Sleep to allow the iterating thread to start
threading.Event().wait(1)
# Replace the original tuple with a new one from another thread
replace_thread = threading.Thread(target=replace_tuple)
replace_thread.start()
# Sleep to allow the iterating thread to start
threading.Event().wait(1)
# Create and start the second iterating thread
iterating_thread2 = threading.Thread(target=iterate_tuple)
iterating_thread2.start()
# Wait for threads to finish
iterating_thread.join()
replace_thread.join()
iterating_thread2.join()
My questions are:
- Is this code thread-safe for my use case?
- How does the for loop still refer to the old tuple without corrupting the data after replacing the tuple?
我赞赏你可能提出的任何见解或建议。 谢谢!