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# test thread coordination using a lock object
#
# SPDX-FileCopyrightText: Copyright (c) 2016 Damien P. George on behalf of Pycom Ltd
#
# SPDX-License-Identifier: MIT
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
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