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* [3.13] gh-121489: Export private _PyBytes_Join() again (GH-122267) (#122287)Miss Islington (bot)2024-07-251-0/+4
| | | | | | gh-121489: Export private _PyBytes_Join() again (GH-122267) (cherry picked from commit aef95eb107fef9355c66461612aedd31265f8c21) Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
* [3.13] gh-120973: Fix thread-safety issues with `threading.local` ↵Miss Islington (bot)2024-07-191-0/+8
| | | | | | | | | | | (GH-121655) (#122042) This is a small refactoring to the current design that allows us to avoid manually iterating over threads. This should also fix gh-118490. (cherry picked from commit e059aa6b01030310125477c3ed1da0491020fe10) Co-authored-by: mpage <mpage@meta.com>
* [3.13] gh-121621: Move asyncio_running_loop to private struct (GH-121939) ↵Miss Islington (bot)2024-07-181-2/+0
| | | | | | | | | | (#121943) gh-121621: Move asyncio_running_loop to private struct (GH-121939) This avoids changing the ABI and keeps the field in the private struct. (cherry picked from commit 81fd625b5c30cc6f417c93bad404923676ad8ca3) Co-authored-by: Sam Gross <colesbury@gmail.com>
* [3.13] GH-121583: Remove dependency from pystats.h to internal header file ↵Miss Islington (bot)2024-07-161-5/+5
| | | | | | | (GH-121880) (cherry picked from commit f036a463dbc43d25712183dc6afa4e38c1aaf93d) Co-authored-by: Michael Droettboom <mdboom@gmail.com> Co-authored-by: Peter Bierma <zintensitydev@gmail.com>
* [3.13] gh-121621: Move asyncio running loop to thread state (GH-121695) ↵Miss Islington (bot)2024-07-161-0/+2
| | | | | | | | (GH-121864) gh-121621: Move asyncio running loop to thread state (GH-121695) (cherry picked from commit 69c68de43aef03dd52fabd21f99cb3b0f9329201) Co-authored-by: Ken Jin <kenjin@python.org>
* [3.13] gh-120642: Move _PyCode_CODE() to the internal C API (GH-121644) ↵Miss Islington (bot)2024-07-131-3/+0
| | | | | | | | | | | (#121729) gh-120642: Move _PyCode_CODE() to the internal C API (GH-121644) Move _PyCode_CODE() and _PyCode_NBYTES() macros to the internal C API since they use _Py_CODEUNIT which is only part of the internal C API. (cherry picked from commit a2bec77d25b11f50362a7117223f6d1d5029a909) Co-authored-by: Victor Stinner <vstinner@python.org>
* [3.13] gh-89364: Export PySignal_SetWakeupFd() function (GH-121537) (#121582)Miss Islington (bot)2024-07-101-1/+1
| | | | | | | | | gh-89364: Export PySignal_SetWakeupFd() function (GH-121537) Export the PySignal_SetWakeupFd() function. Previously, the function was documented but it couldn't be used in 3rd party code. (cherry picked from commit ca0fb3423c13822d909d75eb616ecf1965e619ae) Co-authored-by: Victor Stinner <vstinner@python.org>
* [3.13] gh-121368: Fix seq lock memory ordering in _PyType_Lookup (GH-121388) ↵Miss Islington (bot)2024-07-084-0/+26
| | | | | | | | | | | | | | (#121505) The `_PySeqLock_EndRead` function needs an acquire fence to ensure that the load of the sequence happens after any loads within the read side critical section. The missing fence can trigger bugs on macOS arm64. Additionally, we need a release fence in `_PySeqLock_LockWrite` to ensure that the sequence update is visible before any modifications to the cache entry. (cherry picked from commit 1d3cf79a501a93a7a488fc75d4db3060c5ee7d1a) Co-authored-by: Sam Gross <colesbury@gmail.com>
* [3.13] gh-112136: Restore removed _PyArg_Parser (GH-121262) (#121344)Miss Islington (bot)2024-07-031-0/+26
| | | | | | | | | | | | gh-112136: Restore removed _PyArg_Parser (GH-121262) Restore the private _PyArg_Parser structure and the private _PyArg_ParseTupleAndKeywordsFast() function, previously removed in Python 3.13 alpha 1. Recreate Include/cpython/modsupport.h header file. (cherry picked from commit f8373db153920b890c2e2dd8def249e8df63bcc6) Co-authored-by: Victor Stinner <vstinner@python.org>
* gh-121115: Skip __index__ in PyLong_AsNativeBytes by default (GH-121118)Miss Islington (bot)2024-06-281-2/+5
| | | | | (cherry picked from commit 2894aa14f22430e9b6d4676afead6da7c79209ca) Co-authored-by: Steve Dower <steve.dower@python.org>
* [3.13] gh-120838: Add _PyThreadState_WHENCE_FINI (gh-121013)Miss Islington (bot)2024-06-261-4/+5
| | | | | | | | | We also add _PyThreadState_NewBound() and drop _PyThreadState_SetWhence(). This change only affects internal API. (cherry picked from commit a905721b9c5c15279e67c2f7785034b7356b2d46, AKA gh-121010) Co-authored-by: Eric Snow <ericsnowcurrently@gmail.com>
* [3.13] gh-120593: Fix const qualifier in pyatomic.h (GH-121055) (#121057)Miss Islington (bot)2024-06-261-4/+4
| | | | | | gh-120593: Fix const qualifier in pyatomic.h (GH-121055) (cherry picked from commit 9cd2dcbb87fb3c35d8ca3554d9472ac283f62a64) Co-authored-by: Victor Stinner <vstinner@python.org>
* [3.13] gh-120642: Move private PyCode APIs to the internal C API (#120643) ↵Victor Stinner2024-06-262-216/+0
| | | | | | | | | | | | | | | | | | | | | (#121043) gh-120642: Move private PyCode APIs to the internal C API (#120643) * Move _Py_CODEUNIT and related functions to pycore_code.h. * Move _Py_BackoffCounter to pycore_backoff.h. * Move Include/cpython/optimizer.h content to pycore_optimizer.h. * Remove Include/cpython/optimizer.h. * Remove PyUnstable_Replace_Executor(). Rename functions: * PyUnstable_GetExecutor() => _Py_GetExecutor() * PyUnstable_GetOptimizer() => _Py_GetOptimizer() * PyUnstable_SetOptimizer() => _Py_SetTier2Optimizer() * PyUnstable_Optimizer_NewCounter() => _PyOptimizer_NewCounter() * PyUnstable_Optimizer_NewUOpOptimizer() => _PyOptimizer_NewUOpOptimizer() (cherry picked from commit 9e4a81f00fef689c6e18a64245aa064eaadc7ac7)
* [3.13] gh-119344: Make critical section API public (GH-119353) (#120856)Sam Gross2024-06-211-0/+134
| | | | | | | | | | | This makes the following macros public as part of the non-limited C-API for locking a single object or two objects at once. * `Py_BEGIN_CRITICAL_SECTION(op)` / `Py_END_CRITICAL_SECTION()` * `Py_BEGIN_CRITICAL_SECTION2(a, b)` / `Py_END_CRITICAL_SECTION2()` The supporting functions and structs used by the macros are also exposed for cases where C macros are not available. (cherry picked from commit 8f17d69b7bc906e8407095317842cc0fd52cd84a)
* [3.13] gh-117511: Make PyMutex public in the non-limited API (GH-117731) ↵Sam Gross2024-06-202-1/+64
| | | | | (#120800) (cherry picked from commit 3af7263037de1d0ef63b070fc7bfc2cf042eaebe)
* [3.13] gh-118789: Add `PyUnstable_Object_ClearWeakRefsNoCallbacks` ↵Miss Islington (bot)2024-06-181-0/+2
| | | | | | | | | | | | | | | | | (GH-118807) (#120695) This exposes `PyUnstable_Object_ClearWeakRefsNoCallbacks` as an unstable C-API function to provide a thread-safe mechanism for clearing weakrefs without executing callbacks. Some C-API extensions need to clear weakrefs without calling callbacks, such as after running finalizers like we do in subtype_dealloc. Previously they could use `_PyWeakref_ClearRef` on each weakref, but that's not thread-safe in the free-threaded build. (cherry picked from commit e8752d7b80775ec2a348cd4bf38cbe26a4a07615) Co-authored-by: Sam Gross <colesbury@gmail.com> Co-authored-by: Petr Viktorin <encukou@gmail.com>
* [3.13] gh-111389: Add PyHASH_MULTIPLIER constant (GH-119214) (#119334)Miss Islington (bot)2024-06-041-2/+3
| | | | | | gh-111389: Add PyHASH_MULTIPLIER constant (GH-119214) (cherry picked from commit f6da790122fdae1a28f444edfbb55202d6829cd1) Co-authored-by: Victor Stinner <vstinner@python.org>
* [3.13] gh-119336: Restore removed _PyLong_NumBits() function (GH-119418) ↵Miss Islington (bot)2024-06-031-0/+9
| | | | | | | | | | (#119970) gh-119336: Restore removed _PyLong_NumBits() function (GH-119418) It is used by the pywin32 project. (cherry picked from commit e50fac96e82d857ecc024b4cd4e012493b077064) Co-authored-by: Ethan Smith <ethan@ethanhs.me>
* [3.13] gh-118692: Avoid creating unnecessary StopIteration instances for ↵Miss Islington (bot)2024-05-241-3/+3
| | | | | | | | | | monitoring (GH-119216) (#119497) * gh-118692: Avoid creating unnecessary StopIteration instances for monitoring (GH-119216) (cherry picked from commit 6e9863d7a3516cc76d6ce13923b15620499f3855) --------- Co-authored-by: Irit Katriel <1055913+iritkatriel@users.noreply.github.com>
* [3.13] gh-118727: Don't drop the GIL in `drop_gil()` unless the current ↵Miss Islington (bot)2024-05-231-1/+3
| | | | | | | | | | | | | | | | | | | | thread holds it (GH-118745) (#119474) `drop_gil()` assumes that its caller is attached, which means that the current thread holds the GIL if and only if the GIL is enabled, and the enabled-state of the GIL won't change. This isn't true, though, because `detach_thread()` calls `_PyEval_ReleaseLock()` after detaching and `_PyThreadState_DeleteCurrent()` calls it after removing the current thread from consideration for stop-the-world requests (effectively detaching it). Fix this by remembering whether or not a thread acquired the GIL when it last attached, in `PyThreadState._status.holds_gil`, and check this in `drop_gil()` instead of `gil->enabled`. This fixes a crash in `test_multiprocessing_pool_circular_import()`, so I've reenabled it. (cherry picked from commit be1dfccdf2c5c7671b8a549e969b8cf7d60d9936) Co-authored-by: Brett Simmers <swtaarrs@users.noreply.github.com>
* [3.13] gh-118789: Restore hidden `_PyWeakref_ClearRef` (GH-118797) (GH-118903)Miss Islington (bot)2024-05-101-0/+2
| | | | | | | | | | | | | | | gh-118789: Restore hidden `_PyWeakref_ClearRef` (GH-118797) _PyWeakref_ClearRef was previously exposed in the public C-API, although it begins with an underscore and is not documented. It's used by a few C-API extensions. There is currently no alternative public API that can replace its use. _PyWeakref_ClearWeakRefsExceptCallbacks is the only thread-safe way to use _PyWeakref_ClearRef in the free-threaded build. This exposes the C symbol, but does not make the API public. (cherry picked from commit db5af7da092409030c9fbe0a3a986bd0ee441b8b) Co-authored-by: Sam Gross <colesbury@gmail.com>
* gh-112075: use per-thread dict version pool (#118676)Dino Viehland2024-05-071-0/+1
| | | use thread state set of dict versions
* GH-115709: Invalidate executors when a local variable is changed via ↵Mark Shannon2024-05-061-3/+9
| | | | | frame.f_locals (#118639) Also fix unrelated assert in debug Tier2/JIT builds.
* gh-118362: Fix thread safety around lookups from the type cache in the face ↵Dino Viehland2024-05-065-0/+29
| | | | | | | of concurrent mutators (#118454) Add _PyType_LookupRef and use incref before setting attribute on type Makes setting an attribute on a class and signaling type modified atomic Avoid adding re-entrancy exposing the type cache in an inconsistent state by decrefing after type is updated
* gh-74929: Implement PEP 667 (GH-115153)Tian Gao2024-05-042-0/+8
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* gh-111997: C-API for signalling monitoring events (#116413)Irit Katriel2024-05-041-0/+250
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* gh-93502: Add new C-API functions to trace object creation and destruction ↵Pablo Galindo Salgado2024-05-021-0/+10
| | | | (#115945)
* GH-117442: Check eval-breaker at start (rather than end) of tier 2 loops ↵Mark Shannon2024-05-021-1/+1
| | | | (GH-118482)
* gh-110850: Add PyTime_TimeRaw() function (#118394)Victor Stinner2024-05-011-0/+4
| | | | | | | | | | | | | | | | | Add "Raw" variant of PyTime functions: * PyTime_MonotonicRaw() * PyTime_PerfCounterRaw() * PyTime_TimeRaw() Changes: * Add documentation and tests. Tests release the GIL while calling raw clock functions. * py_get_system_clock() and py_get_monotonic_clock() now check that the GIL is hold by the caller if raise_exc is non-zero. * Reimplement "Unchecked" functions with raw clock functions. Co-authored-by: Petr Viktorin <encukou@gmail.com>
* GH-115802: Use the GHC calling convention in JIT code (GH-118287)Brandt Bucher2024-05-011-0/+1
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* gh-116767: fix crash on 'async with' with many context managers (GH-118348)Irit Katriel2024-05-011-1/+1
| | | | | | | Account for `add_stopiteration_handler` pushing a block for `async with`. To allow generator functions that previously almost hit the `CO_MAXBLOCKS` limit by nesting non-async blocks, the limit is increased by 1. This increase allows one more block in non-generator functions.
* GH-118095: Make invalidating and clearing executors memory safe (GH-118459)Mark Shannon2024-05-011-1/+2
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* gh-118331: Handle errors in _PyObject_SetManagedDict (#118334)Sam Gross2024-04-291-1/+1
| | | | | When detaching a dict, the `copy_values` call may fail due to out-of-memory errors. This can be triggered by test_no_memory in test_repl.
* gh-117657: Fixes a few small TSAN issues in dictobject (#118200)Dino Viehland2024-04-251-0/+4
| | | | Fixup TSAN errors for dict
* gh-118207: Rename the COMMON_FIELDS macro in funcobject.h and undef it after ↵Itamar Oren2024-04-251-3/+5
| | | | use (GH-118208)
* gh-112075: Make instance attributes stored in inline "dict" thread safe ↵Dino Viehland2024-04-221-0/+1
| | | | | (#114742) Make instance attributes stored in inline "dict" thread safe on free-threaded builds
* gh-116818: Make `sys.settrace`, `sys.setprofile`, and monitoring thread-safe ↵Dino Viehland2024-04-194-0/+57
| | | | | | | (#116775) Makes sys.settrace, sys.setprofile, and monitoring generally thread-safe. Mostly uses a stop-the-world approach and synchronization around the code object's _co_instrumentation_version. There may be a little bit of extra synchronization around the monitoring data that's required to be TSAN clean.
* gh-112069: Make PySet_GET_SIZE to be atomic safe. (gh-118053)Donghee Na2024-04-181-0/+4
| | | gh-112069: Make PySet_GET_SIZE to be atomic operation
* GH-117760: Streamline the trashcan mechanism (GH-117763)Mark Shannon2024-04-172-28/+26
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* gh-117645: Increase WASI stack size from 512 KiB to 8 MiB (#117674)Victor Stinner2024-04-161-8/+3
| | | | | Increase also the initial memory from 10 MiB to 20 MiB. Reenable test_dynamic on WASI build.
* gh-115178: Add Counts of UOp Pairs to pystats (GH-115181)Jeff Glass2024-04-161-0/+1
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* gh-117649: Raise ImportError for unsupported modules in free-threaded build ↵Sam Gross2024-04-111-1/+10
| | | | | | | | | | (#117651) The free-threaded build does not currently support the combination of single-phase init modules and non-isolated subinterpreters. Ensure that `check_multi_interp_extensions` is always `True` for subinterpreters in the free-threaded build so that importing these modules raises an `ImportError`.
* gh-111926: Make weakrefs thread-safe in free-threaded builds (#117168)mpage2024-04-081-0/+8
| | | | | | | | | Most mutable data is protected by a striped lock that is keyed on the referenced object's address. The weakref's hash is protected using the weakref's per-object lock. Note that this only affects free-threaded builds. Apart from some minor refactoring, the added code is all either gated by `ifdef`s or is a no-op (e.g. `Py_BEGIN_CRITICAL_SECTION`).
* gh-111140: PyLong_From/AsNativeBytes: Take *flags* rather than just ↵Steve Dower2024-04-051-5/+19
| | | | *endianness* (GH-116053)
* gh-116968: Reimplement Tier 2 counters (#117144)Guido van Rossum2024-04-042-14/+12
| | | | | | | | | | | | Introduce a unified 16-bit backoff counter type (``_Py_BackoffCounter``), shared between the Tier 1 adaptive specializer and the Tier 2 optimizer. The API used for adaptive specialization counters is changed but the behavior is (supposed to be) identical. The behavior of the Tier 2 counters is changed: - There are no longer dynamic thresholds (we never varied these). - All counters now use the same exponential backoff. - The counter for ``JUMP_BACKWARD`` starts counting down from 16. - The ``temperature`` in side exits starts counting down from 64.
* GH-115776: Embed the values array into the object, for "normal" Python ↵Mark Shannon2024-04-021-2/+1
| | | | objects. (GH-116115)
* gh-117411: move PyFutureFeatures to pycore_symtable.h and make it private ↵Irit Katriel2024-04-021-20/+0
| | | | (#117412)
* GH-116422: Tier2 hot/cold splitting (GH-116813)Mark Shannon2024-03-261-2/+49
| | | | | Splits the "cold" path, deopts and exits, from the "hot" path, reducing the size of most jitted instructions, at the cost of slower exits.
* A few minor tweaks to get stats working and compiling cleanly. (#117219)Mark Shannon2024-03-251-2/+2
| | | | Fixes a compilation error when configured with `--enable-pystats`, an array size issue, and an unused variable.
* gh-116936: Add PyType_GetModuleByDef() to the limited C API (#116937)Victor Stinner2024-03-251-1/+0
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