circuitpython/tests/thread/stress_create.py at main · EternityForest/circuitpython

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# stress test for creating many threads

import time

if hasattr(time, "sleep_ms"):

sleep_ms = time.sleep_ms

else:

sleep_ms = lambda t: time.sleep(t / 1000)

import _thread

def thread_entry(n):

pass

thread_num = 0

while thread_num < 500:

try:

_thread.start_new_thread(thread_entry, (thread_num,))

thread_num += 1

except (MemoryError, OSError) as er:

# Cannot create a new thead at this stage, yield for a bit to

# let existing threads run to completion and free up resources.

sleep_ms(50)

# wait for the last threads to terminate

sleep_ms(500)

print("done")