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thread_heap_lock.py

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# test interaction of micropython.heap_lock with threads

import _thread, micropython

lock1 = _thread.allocate_lock()

lock2 = _thread.allocate_lock()

def thread_entry():

lock1.acquire()

print([1, 2, 3])

lock2.release()

lock1.acquire()

lock2.acquire()

_thread.start_new_thread(thread_entry, ())

micropython.heap_lock()

lock1.release()

lock2.acquire()

micropython.heap_unlock()

lock1.release()

lock2.release()