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Pablo Galindo Salgado 96e4cd698a
gh-144319: Fix huge page safety in pymalloc arenas (#144331) 
The pymalloc huge page support had two problems. First, on
architectures where the default huge page size exceeds the arena
size (e.g. 32 MiB on PPC, 512 MiB on ARM64 with 64 KB base
pages), mmap with MAP_HUGETLB silently allocates a full huge page
even when the requested size is smaller. The subsequent munmap
with the original arena size then fails with EINVAL, permanently
leaking the entire huge page. Second, huge pages were always
attempted when compiled in, with no way to disable them at
runtime. On Linux, if the huge page pool is exhausted, page
faults including copy-on-write faults after fork deliver SIGBUS
and kill the process.

The arena allocator now queries the system huge page size from
/proc/meminfo and skips MAP_HUGETLB when the arena size is not a
multiple of it. Huge pages also now require explicit opt-in at
runtime via the PYTHON_PYMALLOC_HUGEPAGES environment variable,
which is read through PyConfig and respects -E and -I flags.
The config field pymalloc_hugepages is propagated to the runtime
allocators struct so the low-level arena allocator can check it
without calling getenv directly.
2026-01-30 18:18:56 +00:00
..
mimalloc Doc: More duplicate word fixes (GH-136299) 2025-07-11 21:18:47 +03:00
pycore_abstract.h gh-135763: AC: Implement `allow_negative for Py_ssize_t` (#138150) 2025-09-01 22:55:22 +01:00
pycore_asdl.h gh-87347: Add parenthesis around macro arguments (#93915) 2022-06-20 16:04:52 +02:00
pycore_ast.h gh-132661: Implement PEP 750 (#132662) 2025-04-30 11:46:41 +02:00
pycore_ast_state.h gh-132661: Implement PEP 750 (#132662) 2025-04-30 11:46:41 +02:00
pycore_atexit.h gh-131238: Remove pycore_lock.h includes (#131483) 2025-03-19 23:46:25 +00:00
pycore_audit.h gh-125604: Move _Py_AuditHookEntry, etc. Out of pycore_runtime.h (gh-125605) 2024-10-18 09:26:08 -06:00
pycore_backoff.h gh-141504: Refactor policy object into a single opt_config (gh-143644) 2026-01-15 09:53:00 +09:00
pycore_bitutils.h gh-108216: Cleanup #include in internal header files (#108228) 2023-08-21 18:05:59 +00:00
pycore_blocks_output_buffer.h gh-139877: Use PyBytesWriter in pycore_blocks_output_buffer.h (#139976) 2025-10-14 10:03:55 -07:00
pycore_brc.h gh-131238: Remove pycore_lock.h includes (#131483) 2025-03-19 23:46:25 +00:00
pycore_bytes_methods.h gh-71679: Share the repr implementation between bytes and bytearray (GH-138181) 2025-09-17 11:10:29 +03:00
pycore_bytesobject.h gh-139871: Add bytearray.take_bytes([n]) to efficiently extract bytes (GH-140128) 2025-11-13 13:19:44 +00:00
pycore_c_array.h gh-130080: move _Py_EnsureArrayLargeEnough to a separate header so it can be used outside of the compiler (#130930) 2025-03-13 16:02:58 +00:00
pycore_call.h gh-142217: Remove internal _Py_Identifier functions (#142219) 2025-12-03 14:33:32 +01:00
pycore_capsule.h gh-108240: Add pycore_capsule.h internal header file (#108596) 2023-08-29 01:20:02 +00:00
pycore_cell.h gh-123358: Use _PyStackRef in LOAD_DEREF (gh-130064) 2025-03-26 12:08:20 -04:00
pycore_ceval.h gh-143228: Fix UAF in perf trampoline during finalization (#143233) 2025-12-28 13:50:23 +00:00
pycore_ceval_state.h gh-131238: Remove pycore_lock.h includes (#131483) 2025-03-19 23:46:25 +00:00
pycore_code.h gh-144289: Remove ENABLE_SPECIALIZATION_FT (gh-144290) 2026-01-27 17:52:50 -05:00
pycore_codecs.h gh-131238: Remove pycore_lock.h includes (#131483) 2025-03-19 23:46:25 +00:00
pycore_compile.h gh-135801: Add the module parameter to compile() etc (GH-139652) 2025-11-13 13:21:32 +02:00
pycore_complexobject.h gh-128813: hide mixed-mode functions for complex arithmetic from C-API (#131703) 2025-04-22 14:18:18 +02:00
pycore_condvar.h gh-131082: Add missing guards for WIN32_LEAN_AND_MEAN (#131044) 2025-03-11 12:33:01 +01:00
pycore_context.h gh-140414: streamline thread state access in asyncio (#142742) 2025-12-15 16:57:51 +05:30
pycore_critical_section.h gh-140795: fetch thread state once on fast path for critical sections (#141406) 2025-11-21 19:49:53 +05:30
pycore_crossinterp.h gh-132775: Clean Up Cross-Interpreter Error Handling (gh-135369) 2025-06-13 16:45:21 -06:00
pycore_crossinterp_data_registry.h gh-132775: Support Fallbacks in _PyObject_GetXIData() (gh-133482) 2025-05-21 07:23:48 -06:00
pycore_debug_offsets.h gh-138122: Add exception profiling mode to the sampling profiler (#142561) 2025-12-11 20:46:34 +00:00
pycore_descrobject.h gh-41779: Allow defining any __slots__ for a class derived from tuple (GH-141763) 2026-01-06 11:36:00 +02:00
pycore_dict.h gh-132657: Add maybe_enable_deferred_ref_count() (gh-142843) 2026-01-17 01:54:43 +00:00
pycore_dict_state.h gh-124296: Remove private dictionary version tag (PEP 699) (#124472) 2024-10-01 12:39:56 -04:00
pycore_dtoa.h GH-131238: Core header refactor (GH-131250) 2025-03-17 09:19:04 +00:00
pycore_emscripten_signal.h GH-108614: Unbreak emscripten build (GH-109132) 2023-09-08 17:54:45 +01:00
pycore_emscripten_trampoline.h gh-132097: use a macro for semantically casting function pointers (#132406) 2025-04-18 12:24:34 +02:00
pycore_exceptions.h gh-129668: Fix thread-safety of MemoryError freelist in free threaded build (gh-129704) 2025-02-06 12:38:12 -05:00
pycore_faulthandler.h gh-127604: Add C stack dumps to faulthandler (#128159) 2025-04-21 20:48:02 +01:00
pycore_fileutils.h gh-131238: Use pycore_interp_structs.h header (#131481) 2025-03-19 23:13:25 +00:00
pycore_fileutils_windows.h gh-108220: Internal header files require Py_BUILD_CORE to be defined (#108221) 2023-08-21 19:15:52 +02:00
pycore_floatobject.h GH-131238: Core header refactor (GH-131250) 2025-03-17 09:19:04 +00:00
pycore_flowgraph.h GH-143493: Conform to spec for generator expressions while supporting virtual iterators (GH-143569) 2026-01-16 09:11:58 +00:00
pycore_format.h gh-104018: remove unused format "z" handling in string formatfloat() (#104107) 2023-05-07 10:11:42 +05:30
pycore_frame.h gh-120321: Make gi_yieldfrom thread-safe in free-threading build (#144292) 2026-01-30 12:20:27 -05:00
pycore_freelist.h gh-140544: store pointer to interpreter state as a thread local for fast access (#140573) 2025-10-25 19:56:07 +05:30
pycore_freelist_state.h gh-129813, PEP 782: Add PyBytesWriter C API (#138822) 2025-09-12 13:41:59 +02:00
pycore_function.h gh-131776: Expose functions called from the interpreter loop via PyAPI_FUNC (#134242) 2025-09-17 08:04:02 -07:00
pycore_gc.h GH-139951: Fix major GC performance regression (GH-140262) 2025-10-21 15:22:15 +01:00
pycore_genobject.h gh-120321: Make gen.gi_frame.clear() thread-safe (gh-143112) 2026-01-08 14:45:54 -05:00
pycore_getopt.h bpo-36763: Cleanup precmdline in _PyCoreConfig_Read() (GH-13371) 2019-05-17 03:15:12 +02:00
pycore_gil.h gh-116322: Enable the GIL while loading C extension modules (#118560) 2024-05-06 23:07:23 -04:00
pycore_global_objects.h GH-131238: Core header refactor (GH-131250) 2025-03-17 09:19:04 +00:00
pycore_global_objects_fini_generated.h gh-144001: Support ignorechars in binascii.a2b_base64() and base64.b64decode() (GH-144024) 2026-01-26 20:11:40 +02:00
pycore_global_strings.h gh-144001: Support ignorechars in binascii.a2b_base64() and base64.b64decode() (GH-144024) 2026-01-26 20:11:40 +02:00
pycore_hamt.h GH-131238: Core header refactor (GH-131250) 2025-03-17 09:19:04 +00:00
pycore_hashtable.h gh-107211: No longer export internal functions (5) (#108423) 2023-08-24 16:06:53 +00:00
pycore_import.h gh-141780: Make PyModule_FromSlotsAndSpec enable GIL if needed (GH-141785) 2025-11-24 13:26:35 +01:00
pycore_importdl.h gh-141169: Re-raise exception from findfuncptr (GH-141349) 2025-11-11 13:52:13 +01:00
pycore_index_pool.h GH-131238: Core header refactor (GH-131250) 2025-03-17 09:19:04 +00:00
pycore_initconfig.h gh-116749: Fix code comment for _PyConfig_GIL_DEFAULT (gh-141804) 2025-11-24 10:42:00 -05:00
pycore_instruction_sequence.h GH-143493: Conform to spec for generator expressions while supporting virtual iterators (GH-143569) 2026-01-16 09:11:58 +00:00
pycore_instruments.h gh-142913: Add test case for interpreter generator w/ overridden opcodes (#142911) 2026-01-16 10:33:29 -08:00
pycore_interp.h gh-131238: Remove includes from pycore_interp.h (#131495) 2025-03-20 11:35:23 +00:00
pycore_interp_structs.h gh-141504: Move PYTHON_UOPS_OPTIMIZE to policy object (GH-144082) 2026-01-20 18:47:38 +00:00
pycore_interpframe.h gh-142913: Add test case for interpreter generator w/ overridden opcodes (#142911) 2026-01-16 10:33:29 -08:00
pycore_interpframe_structs.h GH-140643: Add <native> and <GC> frames to the sampling profiler (#141108) 2025-11-17 13:39:00 +00:00
pycore_interpolation.h gh-132661: Implement PEP 750 (#132662) 2025-04-30 11:46:41 +02:00
pycore_intrinsics.h gh-116126: Implement PEP 696 (#116129) 2024-05-03 06:17:32 -07:00
pycore_jit.h GH-126910: add test for manual frame unwinding (#144137) 2026-01-27 13:17:40 +00:00
pycore_list.h gh-142913: Add test case for interpreter generator w/ overridden opcodes (#142911) 2026-01-16 10:33:29 -08:00
pycore_llist.h gh-111964: Implement stop-the-world pauses (gh-112471) 2024-01-23 11:08:23 -07:00
pycore_lock.h gh-120321: Make gi_yieldfrom thread-safe in free-threading build (#144292) 2026-01-30 12:20:27 -05:00
pycore_long.h gh-129813, PEP 782: Use PyBytesWriter in _PyBytes_FormatEx() (#138839) 2025-09-15 12:23:36 +02:00
pycore_magic_number.h GH-143493: Conform to spec for generator expressions while supporting virtual iterators (GH-143569) 2026-01-16 09:11:58 +00:00
pycore_memoryobject.h gh-132776: Revert Moving memoryview XIData Code to memoryobject.c (gh-132960) 2025-04-25 16:43:50 +00:00
pycore_mimalloc.h gh-122584: Import mimalloc headers in a C++ context (#122587) 2024-08-15 09:01:01 -04:00
pycore_mmap.h gh-142419: Add mmap.set_name method for user custom annotation (gh-142480) 2025-12-18 23:33:49 +09:00
pycore_modsupport.h gh-129594: Remove redundant check on varargs in _PyArg_CheckPositional (#129595) 2025-05-26 10:51:12 +02:00
pycore_moduleobject.h gh-140550: Use a bool for the Py_mod_gil value (GH-141519) 2025-11-14 10:38:49 +01:00
pycore_namespace.h gh-107211: No longer export internal functions (4) (#107217) 2023-07-25 03:16:28 +00:00
pycore_object.h GH-143026: Fix assertion error in executor management. (GH-143104) 2025-12-23 17:19:34 +00:00
pycore_object_alloc.h gh-112529: Use GC heaps for GC allocations in free-threaded builds (gh-114157) 2024-01-21 01:14:45 +09:00
pycore_object_deferred.h gh-117139: Convert the evaluation stack to stack refs (#118450) 2024-06-27 03:10:43 +08:00
pycore_object_stack.h gh-125859: Fix crash when gc.get_objects is called during GC (#125882) 2024-10-24 09:33:11 -04:00
pycore_object_state.h gh-125604: Move _Py_AuditHookEntry, etc. Out of pycore_runtime.h (gh-125605) 2024-10-18 09:26:08 -06:00
pycore_obmalloc.h gh-144319: Add huge pages support for pymalloc (#144320) 2026-01-29 12:26:11 +00:00
pycore_obmalloc_init.h gh-113055: Use pointer for interp->obmalloc state (gh-113412) 2024-01-26 19:38:14 -08:00
pycore_opcode_metadata.h gh-143995: Eliminate redundant refcounting in the JIT from LOAD_ATTR_MODULE (GH-143996) 2026-01-25 18:24:44 +00:00
pycore_opcode_utils.h gh-142863: optimize list and set calls with generator expressions (#142864) 2026-01-06 23:23:28 +05:30
pycore_optimizer.h gh-144145: Track nullness of properties in the Tier 2 JIT optimizer (GH-144122) 2026-01-30 15:25:19 +00:00
pycore_optimizer_types.h gh-144145: Track nullness of properties in the Tier 2 JIT optimizer (GH-144122) 2026-01-30 15:25:19 +00:00
pycore_parking_lot.h gh-110850: Cleanup pycore_time.h includes (#115724) 2024-02-20 16:50:43 +00:00
pycore_parser.h gh-122581: Use parser mutex in default build for subinterpreters (gh-142959) 2025-12-20 15:37:31 -05:00
pycore_pathconfig.h gh-107211: No longer export internal functions (6) (#108424) 2023-08-24 17:28:35 +02:00
pycore_pyarena.h gh-107211: Fix test_peg_generator (#108435) 2023-08-24 17:47:44 +00:00
pycore_pyatomic_ft_wrappers.h gh-120321: Make gi_frame_state transitions atomic in FT build (gh-142599) 2025-12-19 19:10:37 +00:00
pycore_pybuffer.h gh-76785: Rename _xxsubinterpreters to _interpreters (gh-117791) 2024-04-24 16:18:24 +00:00
pycore_pyerrors.h gh-142913: Add test case for interpreter generator w/ overridden opcodes (#142911) 2026-01-16 10:33:29 -08:00
pycore_pyhash.h GH-131238: Core header refactor (GH-131250) 2025-03-17 09:19:04 +00:00
pycore_pylifecycle.h gh-136421: Load _datetime static types during interpreter initialization (GH-136583) 2025-07-21 13:47:26 -04:00
pycore_pymath.h gh-142342: Fix m68k assembler operand constraints for %fpcr access (gh-142343) 2025-12-09 13:46:40 +00:00
pycore_pymem.h gh-116008: Detect freed thread state in faulthandler (#141988) 2025-11-27 12:35:00 +01:00
pycore_pymem_init.h gh-115103: Implement delayed free mechanism for free-threaded builds (#115367) 2024-02-20 13:04:37 -05:00
pycore_pystate.h GH-139914: Handle stack growth direction on HPPA (GH-140028) 2025-11-17 14:41:22 +01:00
pycore_pystats.h gh-131253: free-threaded build support for pystats (gh-137189) 2025-11-03 11:36:37 -08:00
pycore_pythonrun.h gh-140222: Increase stack margin on debug build (#142452) 2025-12-09 16:25:46 +01:00
pycore_pythread.h GH-131238: Core header refactor (GH-131250) 2025-03-17 09:19:04 +00:00
pycore_qsbr.h GH-133136: Revise QSBR to reduce excess memory held (gh-135473) 2025-06-25 00:06:32 -07:00
pycore_range.h gh-89189: More compact range iterator (GH-27986) 2022-11-30 23:04:30 +02:00
pycore_runtime.h gh-131238: Use pycore_interp_structs.h header (#131481) 2025-03-19 23:13:25 +00:00
pycore_runtime_init.h gh-131185: Use a proper thread-local for cached thread states (gh-132510) 2025-05-21 07:01:25 -06:00
pycore_runtime_init_generated.h gh-144001: Support ignorechars in binascii.a2b_base64() and base64.b64decode() (GH-144024) 2026-01-26 20:11:40 +02:00
pycore_runtime_structs.h gh-144319: Fix huge page safety in pymalloc arenas (#144331) 2026-01-30 18:18:56 +00:00
pycore_semaphore.h gh-137433: Fix deadlock with stop-the-world and daemon threads (gh-137735) 2025-09-16 09:21:58 +01:00
pycore_setobject.h gh-130312: SET_ADD should not lock (#130136) 2025-03-21 15:58:32 -07:00
pycore_signal.h gh-109693: Use pyatomic.h for signal module (gh-110480) 2023-10-10 08:26:29 +09:00
pycore_sliceobject.h GH-115802: JIT "small" code for Windows (GH-115964) 2024-02-29 08:11:28 -08:00
pycore_stackref.h gh-142472: Clean-up _PyStackRef functions (gh-142479) 2025-12-15 12:03:49 -05:00
pycore_stats.h gh-131253: free-threaded build support for pystats (gh-137189) 2025-11-03 11:36:37 -08:00
pycore_strhex.h gh-107211: No longer export pycore_strhex.h functions (#108229) 2023-08-21 18:12:22 +00:00
pycore_structs.h GH-131498: Cases generator: manage stacks automatically (GH-132074) 2025-04-04 17:59:36 +01:00
pycore_structseq.h gh-107211: No longer export internal functions (4) (#107217) 2023-07-25 03:16:28 +00:00
pycore_symtable.h gh-135801: Add the module parameter to compile() etc (GH-139652) 2025-11-13 13:21:32 +02:00
pycore_sysmodule.h gh-108512: Add and use new replacements for PySys_GetObject() (GH-111035) 2025-05-28 20:11:09 +03:00
pycore_template.h gh-132661: Implement PEP 750 (#132662) 2025-04-30 11:46:41 +02:00
pycore_time.h Remove internal _PyTime_AsLong() function (#141053) 2025-11-05 18:37:06 +01:00
pycore_token.h gh-132661: Implement PEP 750 (#132662) 2025-04-30 11:46:41 +02:00
pycore_traceback.h gh-125434: Display thread name in faulthandler on Windows (#140675) 2025-10-27 18:41:18 +01:00
pycore_tracemalloc.h gh-143057: avoid locking in tracemalloc C-APIs when it is not enabled (#143065) 2025-12-22 21:08:07 +05:30
pycore_tstate.h GH-139109: Partial reworking of JIT data structures (GH-144105) 2026-01-22 10:55:49 +00:00
pycore_tuple.h gh-111489: Remove _PyTuple_FromArray() alias (#139973) 2025-10-11 22:58:14 +02:00
pycore_typedefs.h gh-130931: Add pycore_typedefs.h internal header (#131396) 2025-03-19 15:23:32 +01:00
pycore_typeobject.h gh-123241: Don't modify ref count during visitation (GH-142232) 2025-12-11 09:54:29 +01:00
pycore_typevarobject.h gh-119180: Add evaluate functions for type params and type aliases (#122212) 2024-07-27 17:24:10 +00:00
pycore_ucnhash.h gh-111972: Make Unicode name C APIcapsule initialization thread-safe (#112249) 2023-11-30 11:12:49 +01:00
pycore_unicodectype.h gh-129117: Add unicodedata.isxidstart() function (#140269) 2025-10-30 10:18:12 +00:00
pycore_unicodeobject.h gh-142217: Remove internal _Py_Identifier functions (#142219) 2025-12-03 14:33:32 +01:00
pycore_unicodeobject_generated.h gh-144001: Support ignorechars in binascii.a2b_base64() and base64.b64decode() (GH-144024) 2026-01-26 20:11:40 +02:00
pycore_unionobject.h gh-105499: Merge typing.Union and types.UnionType (#105511) 2025-03-04 11:44:19 -08:00
pycore_uniqueid.h GH-131238: Core header refactor (GH-131250) 2025-03-17 09:19:04 +00:00
pycore_uop.h GH-139109: Partial reworking of JIT data structures (GH-144105) 2026-01-22 10:55:49 +00:00
pycore_uop_ids.h gh-144145: Track nullness of properties in the Tier 2 JIT optimizer (GH-144122) 2026-01-30 15:25:19 +00:00
pycore_uop_metadata.h gh-144145: Track nullness of properties in the Tier 2 JIT optimizer (GH-144122) 2026-01-30 15:25:19 +00:00
pycore_warnings.h GH-131238: Core header refactor (GH-131250) 2025-03-17 09:19:04 +00:00
pycore_weakref.h gh-135607: remove null checking of weakref list in dealloc of extension modules and objects (#135614) 2025-06-30 11:14:31 +00:00