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* gh-126986: Drop _PyInterpreterState_FailIfNotRunning() (gh-126988)Eric Snow2024-11-192-14/+9
| | | We replace it with _PyErr_SetInterpreterAlreadyRunning().
* GH-126491: GC: Mark objects reachable from roots before doing cycle ↵Mark Shannon2024-11-187-82/+219
| | | | | | | | | | | | | | | | collection (GH-126502) * Mark almost all reachable objects before doing collection phase * Add stats for objects marked * Visit new frames before each increment * Remove lazy dict tracking * Update docs * Clearer calculation of work to do.
* gh-125063: marshal: Add version 5, improve documentation (GH-126829)Petr Viktorin2024-11-151-15/+31
| | | | | | | | | | * Document that slices can be marshalled * Deduplicate and organize the list of supported types in docs * Organize the type code list in marshal.c, to make it more obvious that this is a versioned format * Back-fill some historical info Co-authored-by: Michael Droettboom <mdboom@gmail.com>
* gh-126312: Don't traverse frozen objects on the free-threaded build (#126338)Peter Bierma2024-11-151-5/+14
| | | | | Also, _PyGC_Freeze() no longer freezes unreachable objects. Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
* GH-124567: Reduce overhead of debug build for GC. Should help CI performance ↵Mark Shannon2024-11-151-1/+9
| | | | (GH-126777)
* gh-103951: enable optimization for fast attribute access on module ↵Sergey B Kirpichev2024-11-154-4/+4
| | | | | subclasses (GH-126264) Co-authored-by: Nicolas Tessore <n.tessore@ucl.ac.uk>
* gh-126757: fix minor typo (GH-126758)Yuxuan Zhang2024-11-121-1/+1
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* gh-126688: Reinit import lock after fork (#126692)Sam Gross2024-11-121-0/+7
| | | | | | The PyMutex implementation supports unlocking after fork because we clear the list of waiters in parking_lot.c. This doesn't work as well for _PyRecursiveMutex because on some systems, such as SerenityOS, the thread id is not preserved across fork().
* gh-76785: Improved Subinterpreters Compatibility with 3.12 (2/2) (gh-126707)Eric Snow2024-11-122-73/+165
| | | | | | | | | These changes makes it easier to backport the _interpreters, _interpqueues, and _interpchannels modules to Python 3.12. This involves the following: * add the _PyXI_GET_STATE() and _PyXI_GET_GLOBAL_STATE() macros * add _PyXIData_lookup_context_t and _PyXIData_GetLookupContext() * add _Py_xi_state_init() and _Py_xi_state_fini()
* gh-126133: Only use start year in PSF copyright, remove end years (#126236)Hugo van Kemenade2024-11-121-1/+1
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* gh-126209: Fix inconsistency of `skip_file_prefixes` in `warnings.warn`'s C ↵Daehee Kim2024-11-121-1/+2
| | | | | | | and Python implementations (GH-126329) Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu> Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com> Co-authored-by: Kirill Podoprigora <kirill.bast9@mail.ru>
* GH-126195: Use M1 JIT memory protection APIs (GH-126196)Diego Russo2024-11-121-2/+16
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* gh-76785: Improved Subinterpreters Compatibility with 3.12 (1/2) (gh-126704)Eric Snow2024-11-113-19/+25
| | | | | | | | | These changes makes it easier to backport the _interpreters, _interpqueues, and _interpchannels modules to Python 3.12. This involves the following: * rename several structs and typedefs * add several typedefs * stop using the PyThreadState.state field directly in parking_lot.c
* gh-76785: Minor Cleanup of Exception-related Cross-interpreter State (gh-126602)Eric Snow2024-11-112-55/+72
| | | This change makes it easier to backport the _interpreters, _interpqueues, and _interpchannels modules to Python 3.12.
* gh-120619: Strength reduce function guards, support 2-operand uop forms ↵Ken Jin2024-11-098-100/+163
| | | | | (GH-124846) Co-authored-by: Brandt Bucher <brandtbucher@gmail.com>
* gh-126072: Set docstring attribute for module and class (#126231)Xuanteng Huang2024-11-082-16/+21
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* gh-126579: Adapt sys.audit() to Argument Clinic (GH-126580)Serhiy Storchaka2024-11-082-42/+63
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* gh-122943: Add the varpos parameter in _PyArg_UnpackKeywords (GH-126564)Serhiy Storchaka2024-11-089-35/+63
| | | | Remove _PyArg_UnpackKeywordsWithVararg. Add comments for integer arguments of _PyArg_UnpackKeywords.
* gh-126171: fix possible null dereference in _imp_find_frozen_impl (#126566)Valery Fedorenko2024-11-081-1/+1
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* gh-122943: Remove the object converter for var-positional parameter (GH-126560)Serhiy Storchaka2024-11-082-19/+16
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* gh-120017: use 'do-while(0)' in some `{codegen,compile}.c` multi-line macros ↵Bénédikt Tran2024-11-072-62/+72
| | | | (#120018)
* gh-122943: Rework support of var-positional parameter in Argument Clinic ↵Serhiy Storchaka2024-11-072-171/+28
| | | | | | | | | | | | | | | | | | (GH-122945) Move creation of a tuple for var-positional parameter out of _PyArg_UnpackKeywordsWithVararg(). Merge _PyArg_UnpackKeywordsWithVararg() with _PyArg_UnpackKeywords(). Add a new parameter in _PyArg_UnpackKeywords(). The "parameters" and "converters" attributes of ParseArgsCodeGen no longer contain the var-positional parameter. It is now available as the "varpos" attribute. Optimize code generation for var-positional parameter and reuse the same generating code for functions with and without keyword parameters. Add special converters for var-positional parameter. "tuple" represents it as a Python tuple and "array" represents it as a continuous array of PyObject*. "object" is a temporary alias of "tuple".
* gh-76785: Minor Cleanup of "Cross-interpreter" Code (gh-126457)Eric Snow2024-11-073-170/+169
| | | | | | | | The primary objective here is to allow some later changes to be cleaner. Mostly this involves renaming things and moving a few things around. * CrossInterpreterData -> XIData * crossinterpdatafunc -> xidatafunc * split out pycore_crossinterp_data_registry.h * add _PyXIData_lookup_t
* Chore: Fix typo in `pyarena.c` (#126527)Aditya Borikar2024-11-071-1/+1
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* gh-126513: Use helpers for `_Py_Specialize_ConstainsOp` (#126517)Kirill Podoprigora2024-11-061-17/+7
| | | | | * Use helpers for _Py_Specialize_ConstainsOp * Remove unnecessary variable
* gh-115999: Introduce helpers for (un)specializing instructions (#126414)mpage2024-11-061-48/+84
| | | | | | | | Introduce helpers for (un)specializing instructions Consolidate the code to specialize/unspecialize instructions into two helper functions and use them in `_Py_Specialize_BinaryOp`. The resulting code is more concise and keeps all of the logic at the point where we decide to specialize/unspecialize an instruction.
* gh-115999: Add free-threaded specialization for CONTAINS_OP (gh-126450)Donghee Na2024-11-063-6/+8
| | | | - The specialization logic determines the appropriate specialization using only the operand's type, which is safe to read non-atomically (changing it requires stopping the world). We are guaranteed that the type will not change in between when it is checked and when we specialize the bytecode because the types involved are immutable (you cannot assign to `__class__` for exact instances of `dict`, `set`, or `frozenset`). The bytecode is mutated atomically using helpers. - The specialized instructions rely on the operand type not changing in between the `DEOPT_IF` checks and the calls to the appropriate type-specific helpers (e.g. `_PySet_Contains`). This is a correctness requirement in the default builds and there are no changes to the opcodes in the free-threaded builds that would invalidate this.
* GH-125911: Rename big trampoline to "shim" (GH-126339)Savannah Ostrowski2024-11-051-7/+5
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* gh-126238: Fix possible null pointer dereference of freevars in ↵Valery Fedorenko2024-11-051-1/+1
| | | | | | | | _PyCompile_LookupArg (#126239) * Replace Py_DECREF by Py_XDECREF Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com> Co-authored-by: Peter Bierma <zintensitydev@gmail.com>
* gh-126366: Fix crash if `__iter__` raises an exception during `yield from` ↵Peter Bierma2024-11-053-6/+9
| | | | (#126369)
* gh-126415: Fix conversion warning in `Python/bytecodes.c` (#126416)Kirill Podoprigora2024-11-052-3/+3
| | | | | Fix conversion warning in bytecodes Co-authored-by: mpage <mpage@cs.stanford.edu>
* gh-115999: Implement thread-local bytecode and enable specialization for ↵mpage2024-11-0414-167/+570
| | | | | | | | | `BINARY_OP` (#123926) Each thread specializes a thread-local copy of the bytecode, created on the first RESUME, in free-threaded builds. All copies of the bytecode for a code object are stored in the co_tlbc array on the code object. Threads reserve a globally unique index identifying its copy of the bytecode in all co_tlbc arrays at thread creation and release the index at thread destruction. The first entry in every co_tlbc array always points to the "main" copy of the bytecode that is stored at the end of the code object. This ensures that no bytecode is copied for programs that do not use threads. Thread-local bytecode can be disabled at runtime by providing either -X tlbc=0 or PYTHON_TLBC=0. Disabling thread-local bytecode also disables specialization. Concurrent modifications to the bytecode made by the specializing interpreter and instrumentation use atomics, with specialization taking care not to overwrite an instruction that was instrumented concurrently.
* gh-119793: Add optional length-checking to `map()` (GH-120471)Nice Zombies2024-11-041-12/+88
| | | | | | Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com> Co-authored-by: Pieter Eendebak <pieter.eendebak@gmail.com> Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com> Co-authored-by: Raymond Hettinger <rhettinger@users.noreply.github.com>
* gh-125832: Reformat comments for inlined comprehensions (gh-126346)Donghee Na2024-11-031-5/+5
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* gh-125832: Clarify comment for inlined comprehensions as per PEP-709 (#126322)rimchoi2024-11-021-3/+6
| | | | | | | | | | | | | | * Fix comprehensions comment to inlined by pep 709 * Update spacing Co-authored-by: RUANG (James Roy) <longjinyii@outlook.com> * Add reference to PEP 709 --------- Co-authored-by: Carol Willing <carolcode@willingconsulting.com> Co-authored-by: RUANG (James Roy) <longjinyii@outlook.com>
* gh-126255: Ignore warning about JIT being deactivated when perf support is ↵mpage2024-11-012-1/+7
| | | | | | | | | | | active in `test_embed.InitConfigTests.test_initconfig_api` (#126302) Temporarily ignore warnings about JIT deactivation when perf support is active. This will be reverted as soon as a way is found to determine at run time whether the interpreter was built with JIT. Currently, this is not possible on Windows. Co-authored-by: Kirill Podoprigora <kirill.bast9@mail.ru> Co-authored-by: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com> Co-authored-by: Pablo Galindo <pablogsal@gmail.com>
* gh-120026: soft deprecate Py_HUGE_VAL macro (#120027)Sergey B Kirpichev2024-11-011-2/+2
| | | Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
* gh-126072: do not add `None` to `co_consts` if there is no docstring (GH-126101)Xuanteng Huang2024-10-303-3/+15
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* gh-124855: Don't allow the JIT and perf support to be active at the same ↵Pablo Galindo Salgado2024-10-302-7/+22
| | | | time (#124856)
* gh-126139: Improve error message location for future statement with unknown ↵Brian Schubert2024-10-291-2/+10
| | | | feature (#126140)
* gh-118423: Add `INSTRUCTION_SIZE` macro to code generator (GH-125467)Tomas R.2024-10-293-28/+28
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* gh-126105: Fix crash in `ast` module, when `._fields` is deleted (#126115)sobolevn2024-10-291-10/+8
| | | | Previously, if the `ast.AST._fields` attribute was deleted, attempts to create a new `as`t node would crash due to the assumption that `_fields` always had a non-NULL value. Now it has been fixed by adding an extra check to ensure that `_fields` does not have a NULL value (this can happen when you manually remove `_fields` attribute).
* GH-125837: Split `LOAD_CONST` into three. (GH-125972)Mark Shannon2024-10-2910-139/+204
| | | | | | | | * Add LOAD_CONST_IMMORTAL opcode * Add LOAD_SMALL_INT opcode * Remove RETURN_CONST opcode
* GH-125912: Teach the JIT's optimizer about _BINARY_OP_INPLACE_ADD_UNICODE ↵Brandt Bucher2024-10-282-0/+37
| | | | (GH-125935)
* GH-125515: Reduce number of compiler warnings in generated code (GH-125697)Mark Shannon2024-10-282-5/+7
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* gh-126018: Avoid aborting due to unnecessary assert in `sys.audit` (#126020)devdanzin2024-10-271-1/+0
| | | | Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com> Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
* GH-125911: Call combine_symbol_mask on the initial trampoline of a trace ↵Nadeshiko Manju2024-10-251-0/+1
| | | | (GH-125973)
* gh-125900: Clean-up logic around immortalization in free-threading (#125901)Sam Gross2024-10-241-5/+13
| | | | | | | | | * Remove `@suppress_immortalization` decorator * Make suppression flag per-thread instead of per-interpreter * Suppress immortalization in `eval()` to avoid refleaks in three tests (test_datetime.test_roundtrip, test_logging.test_config8_ok, and test_random.test_after_fork). * frozenset() is constant, but not a singleton. When run multiple times, the test could fail due to constant interning.
* gh-123930: Better error for "from imports" when script shadows module (#123929)Shantanu2024-10-241-47/+103
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* gh-124218: Avoid refcount contention on builtins module (GH-125847)Sam Gross2024-10-241-2/+4
| | | | | | | This replaces `_PyEval_BuiltinsFromGlobals` with `_PyDict_LoadBuiltinsFromGlobals`, which returns a new reference instead of a borrowed reference. Internally, the new function uses per-thread reference counting when possible to avoid contention on the refcount fields on the builtins module.
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