circuitpython/tests/thread/thread_lock3.py at master · StackRduino/circuitpython

Repository navigation

# test thread coordination using a lock object

import _thread

lock = _thread.allocate_lock()

n_thread = 10

n_finished = 0

def thread_entry(idx):

global n_finished

while True:

with lock:

if n_finished == idx:

break

print('my turn:', idx)

with lock:

n_finished += 1

# spawn threads

for i in range(n_thread):

_thread.start_new_thread(thread_entry, (i,))

# busy wait for threads to finish

while n_finished < n_thread:

pass