10000 [3.13] gh-91555: add warning to docs about possibility of deadlock/infinite recursion (GH-135954) by miss-islington · Pull Request #135989 · python/cpython · GitHub
[go: up one dir, main page]
Skip to content

[3.13] gh-91555: add warning to docs about possibility of deadlock/infinite recursion (GH-135954) #135989

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
Jun 26, 2025
Merged

[3.13] gh-91555: add warning to docs about possibility of deadlock/infinite recursion (GH-135954) #135989

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
9 changes: 9 additions & 0 deletions Doc/library/logging.handlers.rst
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1052,6 +1052,15 @@ possible, while any potentially slow operations (such as sending an email via
.. note:: If you are using :mod:`multiprocessing`, you should avoid using
:class:`~queue.SimpleQueue` and instead use :class:`multiprocessing.Queue`.

.. warning::

The :mod:`multiprocessing` module uses an internal logger created and
accessed via :meth:`~multiprocessing.get_logger`.
:class:`multiprocessing.Queue` will log ``DEBUG`` level messages upon
items being queued. If those log messages are processed by a
:class:`QueueHandler` using the same :class:`multiprocessing.Queue` instance,
it will cause a deadlock or infinite recursion.

.. method:: emit(record)

Enqueues the result of preparing the LogRecord. Should an exception
Expand Down
Loading
0