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* gh-141770: Annotate anonymous mmap usage if "-X dev" is used (gh-142079)Donghee Na2025-12-081-0/+1
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* GH-139727: Add --enable-stackref-debug flag to build.bat to enable ↵Sergey Miryanov2025-11-211-0/+1
| | | | Py_STACKREF_DEBUG build on Windows (GH-139728)
* gh-131253: free-threaded build support for pystats (gh-137189)Neil Schemenauer2025-11-031-0/+1
| | | | | | | | Allow the --enable-pystats build option to be used with free-threading. The stats are now stored on a per-interpreter basis, rather than process global. For free-threaded builds, the stats structure is allocated per-thread and then periodically merged into the per-interpreter stats structure (on thread exit or when the reporting function is called). Most of the pystats related code has be moved into the file Python/pystats.c.
* gh-81313: Add the math.integer module (PEP-791) (GH-133909)Serhiy Storchaka2025-10-311-0/+1
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* gh-139353: Add Objects/unicode_writer.c file (#139911)Victor Stinner2025-10-301-0/+1
| | | | | | | Move the public PyUnicodeWriter API and the private _PyUnicodeWriter API to a new Objects/unicode_writer.c file. Rename a few helper functions to share them between unicodeobject.c and unicode_writer.c, such as resize_compact() or unicode_result().
* gh-129117: Add unicodedata.isxidstart() function (#140269)Stan Ulbrych2025-10-301-0/+1
| | | | | | Expose `_PyUnicode_IsXidContinue/Start` in `unicodedata`: add isxidstart() and isxidcontinue() functions. Co-authored-by: Victor Stinner <vstinner@python.org>
* gh-139353: Add Objects/unicode_format.c file (#139491)Victor Stinner2025-10-101-0/+1
| | | | | | * Move PyUnicode_Format() implementation from unicodeobject.c to unicode_format.c. * Replace unicode_modifiable() with _PyUnicode_IsModifiable() * Add empty lines to have two empty lines between functions.
* gh-139353: Rename formatter_unicode.c to unicode_formatter.c (#139723)Victor Stinner2025-10-081-1/+1
| | | | | | | | | | * Move Python/formatter_unicode.c to Objects/unicode_formatter.c. * Move Objects/stringlib/localeutil.h content into unicode_formatter.c. Remove localeutil.h. * Move _PyUnicode_InsertThousandsGrouping() to unicode_formatter.c and mark the function as static. * Rename unicode_fill() to _PyUnicode_Fill() and export it in pycore_unicodeobject.h. * Move MAX_UNICODE to pycore_unicodeobject.h as _Py_MAX_UNICODE.
* gh-79315: Add Include/cpython/structseq.h header (#139730)Victor Stinner2025-10-071-0/+1
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* gh-79315: Remove Include/pylock.h and Include/monitoring.h (#139731)Victor Stinner2025-10-071-1/+1
| | | Keep Include/cpython/pylock.h and Include/cpython/monitoring.h.
* gh-79315: Add Include/cpython/sliceobject.h header (#139729)Victor Stinner2025-10-071-0/+1
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* gh-79315: Add Include/cpython/marshal.h header (#139725)Victor Stinner2025-10-071-0/+1
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* gh-135755: Make Py_TAIL_CALL_INTERP macro private (#138981)Victor Stinner2025-09-181-1/+1
| | | Rename Py_TAIL_CALL_INTERP to _Py_TAIL_CALL_INTERP.
* gh-131876: Revert "gh-131876: extract `_hashlib` helpers into a separate ↵Bénédikt Tran2025-08-011-4/+0
| | | | | | | directory (#136995) (#137307) Revert "gh-131876: extract `_hashlib` helpers into a separate directory (#136995)" This reverts commit 45138d35843297395b2d646f5391be108243957a.
* gh-131876: extract `_hashlib` helpers into a separate directory (#136995)Bénédikt Tran2025-07-281-0/+4
| | | | | | | | The `Modules/hashlib.h` helper file is now removed and split into multiple files: * `Modules/_hashlib/hashlib_buffer.[ch]` -- Utilities for getting a buffer view and handling buffer inputs. * `Modules/_hashlib/hashlib_fetch.h` -- Utilities used when fetching a message digest from a digest-like identifier. Currently, this file only contains common error messages as the fetching API is not yet implemented. * `Modules/_hashlib/hashlib_mutex.h` -- Utilities for managing the lock on cryptographic hash objects.
* gh-136759: rename `lock.h` to `pylock.h` (#137041)AN Long2025-07-241-2/+2
| | | Rename `lock.h` to `pylock.h` to avoid conflicts with headers of other projects.
* gh-135755: rename undocumented `HACL_CAN_COMPILE_SIMD{128,256}` macros (#135847)Bénédikt Tran2025-06-271-2/+6
| | | | Rename undocumented `HACL_CAN_COMPILE_SIMD{128,256}` macros to `_Py_HACL_CAN_COMPILE_VEC{128,256}`. These macros are private.
* gh-133779: Revert Windows generation of pyconfig.h and go back to a static ↵Steve Dower2025-05-191-29/+2
| | | | | | header. (GH-133966) Extension builders must specify Py_GIL_DISABLED if they want to link to the free-threaded builds. This was usually the case already, but this change guarantees it in all circumstances.
* gh-126835: Rename `ast_opt.c` to `ast_preprocess.c` and related stuff after ↵Yan Yanchii2025-05-041-1/+1
| | | | moving const folding to the peephole optimizier (#131830)
* gh-132661: Implement PEP 750 (#132662)Lysandros Nikolaou2025-04-301-0/+4
| | | | | | | | | | | | | Co-authored-by: Lysandros Nikolaou <lisandrosnik@gmail.com> Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com> Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com> Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com> Co-authored-by: Wingy <git@wingysam.xyz> Co-authored-by: Koudai Aono <koxudaxi@gmail.com> Co-authored-by: Dave Peck <davepeck@gmail.com> Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu> Co-authored-by: Paul Everitt <pauleveritt@me.com> Co-authored-by: sobolevn <mail@sobolevn.me>
* gh-128384: Use a context variable for warnings.catch_warnings (gh-130010)Neil Schemenauer2025-04-091-1/+1
| | | | | | | | | | | | | | | | | | | | Make `warnings.catch_warnings()` use a context variable for holding the warning filtering state if the `sys.flags.context_aware_warnings` flag is set to true. This makes using the context manager thread-safe in multi-threaded programs. Add the `sys.flags.thread_inherit_context` flag. If true, starting a new thread with `threading.Thread` will use a copy of the context from the caller of `Thread.start()`. Both these flags are set to true by default for the free-threaded build and false for the default build. Move the Python implementation of warnings.py into _py_warnings.py. Make _contextvars a builtin module. Co-authored-by: Kumar Aditya <kumaraditya@python.org>
* gh-109599: Expose `CapsuleType` via the `_types` module (#131969)Adam Turner2025-04-041-0/+1
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* gh-99108: Implement HACL* HMAC (#130157)Bénédikt Tran2025-04-041-0/+3
| | | | | | | A new extension module, `_hmac`, now exposes the HACL* HMAC (formally verified) implementation. The HACL* implementation is used as a fallback implementation when the OpenSSL implementation of HMAC is not available or disabled. For now, only named hash algorithms are recognized and SIMD support provided by HACL* for the BLAKE2 hash functions is not yet used.
* gh-131591: Implement PEP 768 (#131937)Pablo Galindo Salgado2025-04-031-0/+2
| | | | Co-authored-by: Ivona Stojanovic <stojanovic.i@hotmail.com> Co-authored-by: Matt Wozniski <godlygeek@gmail.com>
* gh-131238: Move _Py_VISIT_STACKREF() to pycore_stackref.h (#131560)Victor Stinner2025-03-211-0/+1
| | | | | | | * Move _Py_VISIT_STACKREF() from pycore_gc.h to pycore_stackref.h. * Remove pycore_interpframe.h include from pycore_genobject.h. * Remove now useless includes from C files. * Add pycore_interpframe_structs.h to Makefile.pre.in and pythoncore.vcxproj.
* gh-131238: Add pycore_interpframe.h to PYTHON_HEADERS (#131545)Victor Stinner2025-03-211-0/+1
| | | Add pycore_interpframe.h to Makefile.pre.in and pythoncore.vcxproj.
* GH-131473: Add missing %(AdditionalOptions) reference to pythoncore.vcxproj ↵Chris Eibl2025-03-191-2/+2
| | | | (GH-131475)
* gh-91349: Replace zlib with zlib-ng in Windows build (GH-131438)Steve Dower2025-03-191-30/+11
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* gh-131238: Remove pycore_runtime.h from pycore_pystate.h (#131356)Victor Stinner2025-03-191-0/+1
| | | | | | | | | | | | * Remove includes from pycore_pystate.h: * pycore_runtime_structs.h * pycore_runtime.h * pycore_tstate.h * pycore_interp.h * Reorganize internal headers. Move _gc_thread_state from pycore_interp_structs.h to pycore_tstate.h. * Add 3 new header files to PCbuild/pythoncore.vcxproj.
* gh-130931: Add pycore_typedefs.h internal header (#131396)Victor Stinner2025-03-191-0/+1
| | | | | Declare _PyInterpreterFrame and _PyRuntimeState types before declaring their structure members. Break reference cycles between header files.
* GH-131278: Add option to build with computed gotos on Windows with clang-cl ↵Chris Eibl2025-03-171-0/+1
| | | | (GH-131279)
* GH-131238: More refactoring of core header files (GH-131351)Mark Shannon2025-03-171-1/+4
| | | | Adds new pycore_stats.h header file to help break dependencies involving the pycore_code.h header.
* gh-130213: update hacl_star_rev to 322f6d58290e0ed7f4ecb84fcce12917aa0f594b ↵Chris Eibl2025-03-151-1/+1
| | | | | (GH-130960) Updates the HACL* implementation used by hashlib from upstream sources.
* gh-130039: Tailcall for windows builds (GH-130040)Ken Jin2025-03-111-0/+1
| | | Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
* gh-130090: Support PGO for clang-cl on Windows (GH-129907)Chris Eibl2025-03-041-1/+1
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* gh-127248: Fix several removed or misnamed files in pythoncore.vcxproj ↵Sergey Muraviov2024-11-251-6/+1
| | | | (GH-127249)
* gh-76785: Minor Cleanup of "Cross-interpreter" Code (gh-126457)Eric Snow2024-11-071-0/+1
| | | | | | | | 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
* gh-115999: Implement thread-local bytecode and enable specialization for ↵mpage2024-11-041-0/+2
| | | | | | | | | `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-125604: Move _Py_AuditHookEntry, etc. Out of pycore_runtime.h (gh-125605)Eric Snow2024-10-181-1/+4
| | | | | | | | | | | | This is essentially a cleanup, moving a handful of API declarations to the header files where they fit best, creating new ones when needed. We do the following: * add pycore_debug_offsets.h and move _Py_DebugOffsets, etc. there * inline struct _getargs_runtime_state and struct _gilstate_runtime_state in _PyRuntimeState * move struct _reftracer_runtime_state to the existing pycore_object_state.h * add pycore_audit.h and move to it _Py_AuditHookEntry , _PySys_Audit(), and _PySys_ClearAuditHooks * add audit.h and cpython/audit.h and move the existing audit-related API there *move the perfmap/trampoline API from cpython/sysmodule.h to cpython/ceval.h, and remove the now-empty cpython/sysmodule.h
* gh-124218: Refactor per-thread reference counting (#124844)Sam Gross2024-10-011-2/+2
| | | | | | | Currently, we only use per-thread reference counting for heap type objects and the naming reflects that. We will extend it to a few additional types in an upcoming change to avoid scaling bottlenecks when creating nested functions. Rename some of the files and functions in preparation for this change.
* gh-124102: Update internal PCbuild docs to accurately list build ↵Wulian2024-09-231-1/+1
| | | | dependencies (GH-124103)
* gh-121404: split compile.c into compile.c and codegen.c (#123651)Irit Katriel2024-09-091-0/+1
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* gh-99108: Add HACL* Blake2 implementation to hashlib (GH-119316)Jonathan Protzenko2024-08-131-3/+15
| | | | | | | This replaces the existing hashlib Blake2 module with a single implementation that uses HACL\*'s Blake2b/Blake2s implementations. We added support for all the modes exposed by the Python API, including tree hashing, leaf nodes, and so on. We ported and merged all of these changes upstream in HACL\*, added test vectors based on Python's existing implementation, and exposed everything needed for hashlib. This was joint work done with @R1kM. See the PR for much discussion and benchmarking details. TL;DR: On many systems, 8-50% faster (!) than `libb2`, on some systems it appeared 10-20% slower than `libb2`.
* gh-122417: Implement per-thread heap type refcounts (#122418)Sam Gross2024-08-061-0/+2
| | | | | | | The free-threaded build partially stores heap type reference counts in distributed manner in per-thread arrays. This avoids reference count contention when creating or destroying instances. Co-authored-by: Ken Jin <kenjin@python.org>
* gh-100240: Use a consistent implementation for freelists (#121934)Sam Gross2024-07-221-0/+1
| | | | | | | | This combines and updates our freelist handling to use a consistent implementation. Objects in the freelist are linked together using the first word of memory block. If configured with freelists disabled, these operations are essentially no-ops.
* gh-112136: Restore removed _PyArg_Parser (#121262)Victor Stinner2024-07-031-0/+1
| | | | | | | 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.
* gh-117139: Convert the evaluation stack to stack refs (#118450)Ken Jin2024-06-261-0/+1
| | | | | | | | | | | | | | | | | This PR sets up tagged pointers for CPython. The general idea is to create a separate struct _PyStackRef for everything on the evaluation stack to store the bits. This forces the C compiler to warn us if we try to cast things or pull things out of the struct directly. Only for free threading: We tag the low bit if something is deferred - that means we skip incref and decref operations on it. This behavior may change in the future if Mark's plans to defer all objects in the interpreter loop pans out. This implies a strict stack reference discipline is required. ALL incref and decref operations on stackrefs must use the stackref variants. It is unsafe to untag something then do normal incref/decref ops on it. The new incref and decref variants are called dup and close. They mimic a "handle" API operating on these stackrefs. Please read Include/internal/pycore_stackref.h for more information! --------- Co-authored-by: Mark Shannon <9448417+markshannon@users.noreply.github.com>
* gh-120642: Move private PyCode APIs to the internal C API (#120643)Victor Stinner2024-06-261-1/+0
| | | | | | | | | | | | | | | * 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()
* gh-119344: Make critical section API public (#119353)Sam Gross2024-06-211-0/+2
| | | | | | | | | | 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.
* gh-117511: Make PyMutex public in the non-limited API (#117731)Sam Gross2024-06-201-0/+2
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