circuitpython/tests/thread/thread_sleep1.py

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# test threads sleeping
#
# MIT license; Copyright (c) 2016 Damien P. George on behalf of Pycom Ltd
import time
if hasattr(time, "sleep_ms"):
sleep_ms = time.sleep_ms
else:
sleep_ms = lambda t: time.sleep(t / 1000)
import _thread
lock = _thread.allocate_lock()
n_thread = 4
n_finished = 0
def thread_entry(t):
global n_finished
sleep_ms(t)
sleep_ms(2 * t)
with lock:
n_finished += 1
for i in range(n_thread):
_thread.start_new_thread(thread_entry, (10 * i,))
# wait for threads to finish
while n_finished < n_thread:
sleep_ms(100)
print("done", n_thread)