circuitpython/tests/thread/thread_stacksize1.py
David Lechner 3dc324d3f1 tests: Format all Python code with black, except tests in basics subdir.
This adds the Python files in the tests/ directory to be formatted with
./tools/codeformat.py.  The basics/ subdirectory is excluded for now so we
aren't changing too much at once.

In a few places `# fmt: off`/`# fmt: on` was used where the code had
special formatting for readability or where the test was actually testing
the specific formatting.
2020-03-30 13:21:58 +11:00

51 lines
983 B
Python

# test setting the thread stack size
#
# MIT license; Copyright (c) 2016 Damien P. George on behalf of Pycom Ltd
import sys
import _thread
# different implementations have different minimum sizes
if sys.implementation.name == "micropython":
sz = 2 * 1024
else:
sz = 32 * 1024
def foo():
pass
def thread_entry():
foo()
with lock:
global n_finished
n_finished += 1
# reset stack size to default
_thread.stack_size()
# test set/get of stack size
print(_thread.stack_size())
print(_thread.stack_size(sz))
print(_thread.stack_size() == sz)
print(_thread.stack_size())
lock = _thread.allocate_lock()
n_thread = 2
n_finished = 0
# set stack size and spawn a few threads
_thread.stack_size(sz)
for i in range(n_thread):
_thread.start_new_thread(thread_entry, ())
# reset stack size to default (for subsequent scripts on baremetal)
_thread.stack_size()
# busy wait for threads to finish
while n_finished < n_thread:
pass
print("done")