mirror of
https://github.com/micropython/micropython.git
synced 2025-08-04 03:41:12 +02:00
b070765427
The native emitter will not release/bounce the GIL when running code, so if it runs tight loops then no other threads get a chance to run (if the GIL is enabled). So for the thread tests, explicitly include a call to `time.sleep(0)` (or equivalent) to bounce the GIL and give other threads a chance to run. For some tests (eg `thread_coop.py`) the whole point of the test is to test that the GIL is correctly bounced. So for those cases force the use of the bytecode emitter for the busy functions. Signed-off-by: Damien George <damien@micropython.org>
50 lines
1.1 KiB
Python
50 lines
1.1 KiB
Python
# test concurrent mutating access to a shared user instance
|
|
#
|
|
# MIT license; Copyright (c) 2016 Damien P. George on behalf of Pycom Ltd
|
|
|
|
import time
|
|
import _thread
|
|
|
|
|
|
# the shared user class and instance
|
|
class User:
|
|
def __init__(self):
|
|
self.a = "A"
|
|
self.b = "B"
|
|
self.c = "C"
|
|
|
|
|
|
user = User()
|
|
|
|
|
|
# main thread function
|
|
def th(n, lo, hi):
|
|
for repeat in range(n):
|
|
for i in range(lo, hi):
|
|
setattr(user, "attr_%u" % i, repeat + i)
|
|
assert getattr(user, "attr_%u" % i) == repeat + i
|
|
|
|
with lock:
|
|
global n_finished
|
|
n_finished += 1
|
|
|
|
|
|
lock = _thread.allocate_lock()
|
|
n_repeat = 30
|
|
n_range = 50 # 300 for stressful test (uses more heap)
|
|
n_thread = 4
|
|
n_finished = 0
|
|
|
|
# spawn threads
|
|
for i in range(n_thread):
|
|
_thread.start_new_thread(th, (n_repeat, i * n_range, (i + 1) * n_range))
|
|
|
|
# busy wait for threads to finish
|
|
while n_finished < n_thread:
|
|
time.sleep(0)
|
|
|
|
# check user instance has correct contents
|
|
print(user.a, user.b, user.c)
|
|
for i in range(n_thread * n_range):
|
|
assert getattr(user, "attr_%u" % i) == n_repeat - 1 + i
|