Python 3.14 free-threaded support - #2721

Open

greateggsgreg wants to merge 38 commits into

pythonnet:masterfrom

greateggsgreg:freethreading-prep

Commits on May 15, 2026

Thread-safety prep for free-threading builds

greateggsgreg
authored and
filmor
committed
ebd0a95
Initialise pythonnet on free-threaded Python (#2720)

greateggsgreg
authored and
filmor
committed
cf8372a
Make extension/CLR-object registries thread-safe

greateggsgreg
authored and
filmor
committed
441954f
Atomic type creation in ReflectedClrType.GetOrCreate / TypeManager.GetType

greateggsgreg
authored and
filmor
committed
19c7f59
Add free-threaded thread-stress tests and 3.14t to CI matrix

greateggsgreg
authored and
filmor
committed
1029c62
Atomic GCHandle ownership and finalizer-thread shutdown guards

greateggsgreg
authored and
filmor
committed
3158ca5
Make additional internal registries thread-safe

greateggsgreg
authored and
filmor
committed
1149295
test_thread: join worker threads before returning

greateggsgreg
authored and
filmor
committed
e8afa85
test_thread: cover ModuleObject thread-safe registries

greateggsgreg
authored and
filmor
committed
3954df3
Wider thread-safety audit fixes for free-threaded Python

greateggsgreg
authored and
filmor
committed
28013af
Document lock acquisition sites and strong->weak GCHandle swap

greateggsgreg
authored and
filmor
committed
9a3dd59
Preserve InternString single-write invariant under DEBUG

greateggsgreg
authored and
filmor
committed
cb1dcde
test_thread: cover real-world consumer patterns

greateggsgreg
authored and
filmor
committed
74d12f1
Auto-detect free-threaded libpython in venv home

greateggsgreg
authored and
filmor
committed
a30c84e
Snapshot pypath, use ConcurrentDictionary for thunks and slot holders

greateggsgreg
authored and
filmor
committed
be5ba34
Fix handling of python runtime suffixes m/t

greateggsgreg
authored and
filmor
committed
946785e
Fix threadtest race

greateggsgreg
authored and
filmor
committed
77ca497
Fix double-free in chained ClassDerived Finalize

greateggsgreg
authored and
filmor
committed
af518bb
Enable Mono CI jobs on free-threaded Python 3.14

greateggsgreg
authored and
filmor
committed
ed735ac
Inline freethreaded_only as pytest.mark.skipif at call sites

greateggsgreg
authored and
filmor
committed
bd3f0bf
Fix InterruptTest assertion on free-threaded Python 3.14

greateggsgreg
authored and
filmor
committed
c4688b3
Add concurrent stress tests for PyBuffer.Dispose and CLR-cycle gc.collect
greateggsgreg
committed
84cd07c
Trim concurrent overhead on hot paths from free-threading prep
greateggsgreg
committed
d9b658d
Pre-warm ctor binder in concurrent-gc test to avoid first-call race
greateggsgreg
committed
20c51ad
Make MethodBinder.GetMethods lazy init thread-safe under free-threading
greateggsgreg
committed
f5f8ab0
Precompute method precedence to avoid quadratic GetParameters allocations in MethodBinder sort
greateggsgreg
committed
c5097eb
Zero the slot in ClassDerived.tp_dealloc when tp_clear already ran to avoid a dangling weak handle
greateggsgreg
committed
18e4901
Keep ClassDerived wrapper alive across the NewObjectToPython slot demotion
greateggsgreg
committed
e0569d0

Commits on May 16, 2026

Commits on May 18, 2026

Commits on May 25, 2026

Merge branch 'master' into freethreading-prep
greateggsgreg
committed
d1b4daa

Commits on Aug 14, 2026

Merge branch 'master' into freethreading-prep
filmor
authored
7903934