https://github.com/python/cpython/commit/c8db0e817e7e0db501533fc8bf5b30c18e60aa3d commit: c8db0e817e7e0db501533fc8bf5b30c18e60aa3d branch: main author: Adam Turner <[email protected]> committer: AA-Turner <[email protected]> date: 2024-10-03T21:06:29+01:00 summary:
GH-109975: Copyedit 3.13 What's New: Remove references to the incremental GC (#124947) files: M Doc/whatsnew/3.13.rst diff --git a/Doc/whatsnew/3.13.rst b/Doc/whatsnew/3.13.rst index eae514a46810eb..261c3b003ccf66 100644 --- a/Doc/whatsnew/3.13.rst +++ b/Doc/whatsnew/3.13.rst @@ -498,30 +498,6 @@ are not tier 3 supported platforms, but will have best-effort support. .. seealso:: :pep:`730`, :pep:`738` -.. _whatsnew313-incremental-gc: - -Incremental garbage collection ------------------------------- - -The cycle garbage collector is now incremental. -This means that maximum pause times are reduced -by an order of magnitude or more for larger heaps. - -There are now only two generations: young and old. -When :func:`gc.collect` is not called directly, the -GC is invoked a little less frequently. When invoked, it -collects the young generation and an increment of the -old generation, instead of collecting one or more generations. - -The behavior of :func:`!gc.collect` changes slightly: - -* ``gc.collect(1)``: Performs an increment of garbage collection, - rather than collecting generation 1. -* Other calls to :func:`!gc.collect` are unchanged. - -(Contributed by Mark Shannon in :gh:`108362`.) - - Other Language Changes ====================== @@ -918,36 +894,6 @@ fractions (Contributed by Mark Dickinson in :gh:`111320`.) -gc --- - -The cyclic garbage collector is now incremental, -which changes the meaning of the results of -:meth:`~gc.get_threshold` and :meth:`~gc.set_threshold` -as well as :meth:`~gc.get_count` and :meth:`~gc.get_stats`. - -* For backwards compatibility, :meth:`~gc.get_threshold` continues to return - a three-item tuple. - The first value is the threshold for young collections, as before; - the second value determines the rate at which the old collection is scanned - (the default is 10, and higher values mean that the old collection - is scanned more slowly). - The third value is meaningless and is always zero. - -* :meth:`~gc.set_threshold` ignores any items after the second. - -* :meth:`~gc.get_count` and :meth:`~gc.get_stats` continue to return - the same format of results. - The only difference is that instead of the results referring to - the young, aging and old generations, - the results refer to the young generation - and the aging and collecting spaces of the old generation. - -In summary, code that attempted to manipulate the behavior of the cycle GC -may not work exactly as intended, but it is very unlikely to be harmful. -All other code will work just fine. - - glob ---- @@ -1512,11 +1458,6 @@ zipimport Optimizations ============= -* The new :ref:`incremental garbage collector <whatsnew313-incremental-gc>` - means that maximum pause times are reduced - by an order of magnitude or more for larger heaps. - (Contributed by Mark Shannon in :gh:`108362`.) - * Several standard library modules have had their import times significantly improved. For example, the import time of the :mod:`typing` module @@ -2629,13 +2570,6 @@ Changes in the Python API Wrap it in :func:`staticmethod` if you want to preserve the old behavior. (Contributed by Serhiy Storchaka in :gh:`121027`.) -* The :ref:`garbage collector is now incremental <whatsnew313-incremental-gc>`, - which means that the behavior of :func:`gc.collect` changes slightly: - - * ``gc.collect(1)``: Performs an increment of garbage collection, - rather than collecting generation 1. - * Other calls to :func:`!gc.collect` are unchanged. - * An :exc:`OSError` is now raised by :func:`getpass.getuser` for any failure to retrieve a username, instead of :exc:`ImportError` on non-Unix platforms _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/python-checkins.python.org/ Member address: [email protected]
