https://github.com/python/cpython/commit/941011374ac21c90c7477ae42d2c193dfe500668
commit: 941011374ac21c90c7477ae42d2c193dfe500668
branch: 3.14
author: Miss Islington (bot) <31488909+miss-isling...@users.noreply.github.com>
committer: corona10 <donghee.n...@gmail.com>
date: 2025-06-16T14:58:14Z
summary:
[3.14] gh-119132: Remove "experimental" tag from the CPython free-threading.
(gh-135550) (gh-135565)
---------
(cherry picked from commit f0799795994bfd9ab0740c4d70ac54270991ba47)
Co-authored-by: Donghee Na <donghee...@python.org>
Co-authored-by: Hugo van Kemenade <1324225+hug...@users.noreply.github.com>
Co-authored-by: Peter Bierma <zintensity...@gmail.com>
Co-authored-by: T. Wouters <tho...@python.org>
files:
A Misc/NEWS.d/next/Build/2025-06-16-07-20-28.gh-issue-119132.fcI8s7.rst
M Doc/howto/free-threading-extensions.rst
M Doc/howto/free-threading-python.rst
M Doc/library/ctypes.rst
M Doc/library/threading.rst
M Doc/using/configure.rst
M Lib/platform.py
M PCbuild/build.bat
M Python/getversion.c
M configure
M configure.ac
diff --git a/Doc/howto/free-threading-extensions.rst
b/Doc/howto/free-threading-extensions.rst
index 175bb5dc831848..02b45879ccfaca 100644
--- a/Doc/howto/free-threading-extensions.rst
+++ b/Doc/howto/free-threading-extensions.rst
@@ -6,8 +6,8 @@
C API Extension Support for Free Threading
******************************************
-Starting with the 3.13 release, CPython has experimental support for running
-with the :term:`global interpreter lock` (GIL) disabled in a configuration
+Starting with the 3.13 release, CPython has support for running with
+the :term:`global interpreter lock` (GIL) disabled in a configuration
called :term:`free threading`. This document describes how to adapt C API
extensions to support free threading.
diff --git a/Doc/howto/free-threading-python.rst
b/Doc/howto/free-threading-python.rst
index c33cef2c8e935b..24069617c47ae1 100644
--- a/Doc/howto/free-threading-python.rst
+++ b/Doc/howto/free-threading-python.rst
@@ -1,18 +1,21 @@
.. _freethreading-python-howto:
-**********************************************
-Python experimental support for free threading
-**********************************************
+*********************************
+Python support for free threading
+*********************************
-Starting with the 3.13 release, CPython has experimental support for a build of
+Starting with the 3.13 release, CPython has support for a build of
Python called :term:`free threading` where the :term:`global interpreter lock`
(GIL) is disabled. Free-threaded execution allows for full utilization of the
available processing power by running threads in parallel on available CPU
cores.
While not all software will benefit from this automatically, programs
designed with threading in mind will run faster on multi-core hardware.
-**The free-threaded mode is experimental** and work is ongoing to improve it:
-expect some bugs and a substantial single-threaded performance hit.
+The free-threaded mode is working and continues to be improved, but
+there is some additional overhead in single-threaded workloads compared
+to the regular build. Additionally, third-party packages, in particular ones
+with an :term:`extension module`, may not be ready for use in a
+free-threaded build, and will re-enable the :term:`GIL`.
This document describes the implications of free threading
for Python code. See :ref:`freethreading-extensions-howto` for information on
@@ -43,7 +46,7 @@ Identifying free-threaded Python
================================
To check if the current interpreter supports free-threading, :option:`python
-VV <-V>`
-and :data:`sys.version` contain "experimental free-threading build".
+and :data:`sys.version` contain "free-threading build".
The new :func:`sys._is_gil_enabled` function can be used to check whether
the GIL is actually disabled in the running process.
diff --git a/Doc/library/ctypes.rst b/Doc/library/ctypes.rst
index 2ee4450698a107..e00fe9c8145f12 100644
--- a/Doc/library/ctypes.rst
+++ b/Doc/library/ctypes.rst
@@ -882,7 +882,7 @@ invalid non-\ ``NULL`` pointers would crash Python)::
Thread safety without the GIL
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-In Python 3.13, the :term:`GIL` may be disabled on :term:`experimental free
threaded <free threading>` builds.
+From Python 3.13 onward, the :term:`GIL` can be disabled on :term:`free
threaded <free threading>` builds.
In ctypes, reads and writes to a single object concurrently is safe, but not
across multiple objects:
.. code-block:: pycon
diff --git a/Doc/library/threading.rst b/Doc/library/threading.rst
index 7edcdcabdce1df..52fefd590daf18 100644
--- a/Doc/library/threading.rst
+++ b/Doc/library/threading.rst
@@ -102,7 +102,7 @@ CPU-bound tasks, as only one thread can execute Python
bytecode at a time.
Despite this, threads remain a useful tool for achieving concurrency in many
scenarios.
-As of Python 3.13, experimental :term:`free-threaded <free threading>` builds
+As of Python 3.13, :term:`free-threaded <free threading>` builds
can disable the GIL, enabling true parallel execution of threads, but this
feature is not available by default (see :pep:`703`).
diff --git a/Doc/using/configure.rst b/Doc/using/configure.rst
index 0b7eaf35a1e689..df81a330549147 100644
--- a/Doc/using/configure.rst
+++ b/Doc/using/configure.rst
@@ -290,8 +290,8 @@ General Options
.. option:: --disable-gil
- Enables **experimental** support for running Python without the
- :term:`global interpreter lock` (GIL): free threading build.
+ Enables support for running Python without the :term:`global interpreter
+ lock` (GIL): free threading build.
Defines the ``Py_GIL_DISABLED`` macro and adds ``"t"`` to
:data:`sys.abiflags`.
diff --git a/Lib/platform.py b/Lib/platform.py
index 55e211212d4209..7dd64de6025d2d 100644
--- a/Lib/platform.py
+++ b/Lib/platform.py
@@ -1198,7 +1198,7 @@ def _sys_version(sys_version=None):
# CPython
cpython_sys_version_parser = re.compile(
r'([\w.+]+)\s*' # "version<space>"
- r'(?:experimental free-threading build\s+)?' #
"free-threading-build<space>"
+ r'(?:free-threading build\s+)?' # "free-threading-build<space>"
r'\(#?([^,]+)' # "(#buildno"
r'(?:,\s*([\w ]*)' # ", builddate"
r'(?:,\s*([\w :]*))?)?\)\s*' # ", buildtime)<space>"
diff --git
a/Misc/NEWS.d/next/Build/2025-06-16-07-20-28.gh-issue-119132.fcI8s7.rst
b/Misc/NEWS.d/next/Build/2025-06-16-07-20-28.gh-issue-119132.fcI8s7.rst
new file mode 100644
index 00000000000000..3eb0805b9ce1be
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2025-06-16-07-20-28.gh-issue-119132.fcI8s7.rst
@@ -0,0 +1 @@
+Remove "experimental" tag from the CPython free-threading build.
diff --git a/PCbuild/build.bat b/PCbuild/build.bat
index 2f358991e484ce..602357048867d6 100644
--- a/PCbuild/build.bat
+++ b/PCbuild/build.bat
@@ -33,7 +33,7 @@ echo. -k Attempt to kill any running Pythons before
building (usually done
echo. automatically by the pythoncore project)
echo. --pgo Build with Profile-Guided Optimization. This flag
echo. overrides -c and -d
-echo. --disable-gil Enable experimental support for running without the GIL.
+echo. --disable-gil Enable support for running without the GIL.
echo. --test-marker Enable the test marker within the build.
echo. --regen Regenerate all opcodes, grammar and tokens.
echo. --experimental-jit Enable the experimental just-in-time
compiler.
diff --git a/Python/getversion.c b/Python/getversion.c
index 226b2f999a6bfd..8d8bc6ea70048c 100644
--- a/Python/getversion.c
+++ b/Python/getversion.c
@@ -15,7 +15,7 @@ void _Py_InitVersion(void)
}
initialized = 1;
#ifdef Py_GIL_DISABLED
- const char *buildinfo_format = "%.80s experimental free-threading build
(%.80s) %.80s";
+ const char *buildinfo_format = "%.80s free-threading build (%.80s) %.80s";
#else
const char *buildinfo_format = "%.80s (%.80s) %.80s";
#endif
diff --git a/configure b/configure
index 015f2e7cac10bc..882e0409d60401 100755
--- a/configure
+++ b/configure
@@ -1826,8 +1826,8 @@ Optional Features:
no)
--enable-profiling enable C-level code profiling with gprof (default is
no)
- --disable-gil enable experimental support for running without the
- GIL (default is no)
+ --disable-gil enable support for running without the GIL (default
+ is no)
--enable-pystats enable internal statistics gathering (default is no)
--enable-optimizations enable expensive, stable optimizations (PGO, etc.)
(default is no)
diff --git a/configure.ac b/configure.ac
index fb48f39d336013..c26e5c7fd1ddc0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1716,7 +1716,7 @@ ABI_THREAD=""
# --disable-gil
AC_MSG_CHECKING([for --disable-gil])
AC_ARG_ENABLE([gil],
- [AS_HELP_STRING([--disable-gil], [enable experimental support for running
without the GIL (default is no)])],
+ [AS_HELP_STRING([--disable-gil], [enable support for running without the GIL
(default is no)])],
[AS_VAR_IF([enable_gil], [yes], [disable_gil=no], [disable_gil=yes])],
[disable_gil=no]
)
AC_MSG_RESULT([$disable_gil])
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