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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