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thread_lock2.py

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# test _thread lock objects with multiple threads

#

# SPDX-FileCopyrightText: Copyright (c) 2016 Damien P. George on behalf of Pycom Ltd

#

# SPDX-License-Identifier: MIT

try:

import utime as time

except ImportError:

import time

import _thread

lock = _thread.allocate_lock()

def thread_entry():

lock.acquire()

print('have it')

lock.release()

# spawn the threads

for i in range(4):

_thread.start_new_thread(thread_entry, ())

# wait for threads to finish

time.sleep(1)

print('done')