Skip to content

bpo-37224: To fix the random failed test cases of test___xxsubinterpreters in multiprocess. #27240

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Jul 29, 2021
Merged

bpo-37224: To fix the random failed test cases of test___xxsubinterpreters in multiprocess. #27240

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
15 changes: 15 additions & 0 deletions Lib/test/test__xxsubinterpreters.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,20 @@ def _run_output(interp, request, shared=None):
return rpipe.read()


def _wait_for_interp_to_run(interp, timeout=None):
# bpo-37224: Running this test file in multiprocesses will fail randomly.
# The failure reason is that the thread can't acquire the cpu to
# run subinterpreter eariler than the main thread in multiprocess.
if timeout is None:
timeout = support.SHORT_TIMEOUT
start_time = time.monotonic()
deadline = start_time + timeout
while not interpreters.is_running(interp):
if time.monotonic() > deadline:
raise RuntimeError('interp is not running')
time.sleep(0.010)


@contextlib.contextmanager
def _running(interp):
r, w = os.pipe()
Expand All @@ -51,6 +65,7 @@ def run():

t = threading.Thread(target=run)
t.start()
_wait_for_interp_to_run(interp)

yield

Expand Down