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gh-134761: Use deferred reference counting for threading concurrency primitives #134762

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e02137e
Use deferred reference counting for threading primitives.
ZeroIntensity May 26, 2025
6093acb
Document and test sys._defer_refcount()
ZeroIntensity May 26, 2025
478d482
Add blurb.
ZeroIntensity May 26, 2025
f0fc73c
Remove sys._defer_refcount() documentation.
ZeroIntensity May 27, 2025
d407ad9
Remove stray newline change.
ZeroIntensity May 27, 2025
c750d92
Move call to _PyObject_SetDeferredRefcount()
ZeroIntensity May 27, 2025
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Remove sys._defer_refcount() documentation.
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ZeroIntensity committed May 27, 2025
commit f0fc73c22e47d2413025a83202559d9b3813364e
20 changes: 0 additions & 20 deletions Doc/library/sys.rst
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Expand Up @@ -290,26 +290,6 @@ always available. Unless explicitly noted otherwise, all variables are read-only
This function is specific to CPython. The exact output format is not
defined here, and may change.

.. function:: _defer_refcount(op)

Enable deferred reference counting on *op*, mitigating reference count
contention on :term:`free threaded <free threading>` builds of Python.

Return :const:`True` if deferred reference counting was enabled on *op*,
and :const:`False` otherwise.

.. versionadded:: next

.. impl-detail::

This function should be used for specialized purposes only.
It is not guaranteed to exist in all implementations of Python.

.. seealso::

:c:func:`PyUnstable_Object_EnableDeferredRefcount`


.. data:: dllhandle

Integer specifying the handle of the Python DLL.
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