circuitpython/tests/thread/thread_lock3.py

28 lines
568 B
Python

# test thread coordination using a lock object
#
# MIT license; Copyright (c) 2016 Damien P. George on behalf of Pycom Ltd
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