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Victor Stinner 5c5022b862
gh-112567: Add _PyTimeFraction C API (#112568) 
Use a fraction internally in the _PyTime API to reduce the risk of
integer overflow: simplify the fraction using Greatest Common
Divisor (GCD). The fraction API is used by time functions:
perf_counter(), monotonic() and process_time().

For example, QueryPerformanceFrequency() usually returns 10 MHz on
Windows 10 and newer. The fraction SEC_TO_NS / frequency =
1_000_000_000 / 10_000_000 can be simplified to 100 / 1.

* Add _PyTimeFraction type.
* Add functions:

  * _PyTimeFraction_Set()
  * _PyTimeFraction_Mul()
  * _PyTimeFraction_Resolution()

* No longer check "numer * denom <= _PyTime_MAX" in
  _PyTimeFraction_Set(). _PyTimeFraction_Mul() uses _PyTime_Mul()
  which handles integer overflow.
 		2023-12-01 19:50:10 +01:00
..
mimalloc gh-90815: Fix mimalloc atomic.h on Windows arm64 (#111527) 2023-10-30 22:33:49 +00:00
pycore_abstract.h gh-106320: Remove private AC converter functions (#108505) 2023-08-26 04:05:17 +02:00
pycore_asdl.h gh-87347: Add parenthesis around macro arguments (#93915) 2022-06-20 16:04:52 +02:00
pycore_ast.h gh-108216: Cleanup #include in internal header files (#108228) 2023-08-21 18:05:59 +00:00
pycore_ast_state.h gh-111956: Add thread-safe one-time initialization. (gh-111960) 2023-11-16 12:19:54 -07:00
pycore_atexit.h gh-107211: No longer export internal functions (4) (#107217) 2023-07-25 03:16:28 +00:00
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-108220: Internal header files require Py_BUILD_CORE to be defined (#108221) 2023-08-21 19:15:52 +02:00
pycore_bytes_methods.h bpo-35081: Move bytes_methods.h to the internal C API (GH-18492) 2020-02-12 22:32:34 +01:00
pycore_bytesobject.h gh-107211: No longer export internal functions (5) (#108423) 2023-08-24 16:06:53 +00:00
pycore_call.h gh-112026: Restore removed private C API (#112115) 2023-11-15 16:38:31 +00:00
pycore_capsule.h gh-108240: Add pycore_capsule.h internal header file (#108596) 2023-08-29 01:20:02 +00:00
pycore_ceval.h gh-112367: Only free perf trampoline arenas at shutdown (#112368) 2023-12-01 13:20:51 +00:00
pycore_ceval_state.h gh-109587: Allow "precompiled" perf-trampolines to largely mitigate the cost of enabling perf-trampolines (#109666) 2023-10-27 03:57:29 +00:00
pycore_code.h gh-111652: Fix --enable-pystats build (GH-111653) 2023-11-03 15:21:16 +00:00
pycore_codecs.h gh-108220: Internal header files require Py_BUILD_CORE to be defined (#108221) 2023-08-21 19:15:52 +02:00
pycore_compile.h gh-107149: make new opcode util functions private rather than public and unstable (#112042) 2023-11-14 00:31:02 +00:00
pycore_complexobject.h gh-112026: Restore removed private C API (#112115) 2023-11-15 16:38:31 +00:00
pycore_condvar.h gh-110014: Fix _POSIX_THREADS and _POSIX_SEMAPHORES usage (#110139) 2023-09-30 19:25:54 +02:00
pycore_context.h gh-106320: Remove private _PyContext_NewHamtForTests() (#108434) 2023-08-24 19:37:41 +02:00
pycore_critical_section.h gh-111863: Rename `Py_NOGIL` to `Py_GIL_DISABLED` (#111864) 2023-11-20 15:52:00 +02:00
pycore_crossinterp.h gh-76785: Return an "excinfo" Object From Interpreter.run() (gh-111573) 2023-11-23 00:55:00 +00:00
pycore_descrobject.h gh-106320: Move _PyMethodWrapper_Type to internal C API (#107064) 2023-07-22 20:57:59 +00:00
pycore_dict.h gh-112026: Restore removed private C API (#112115) 2023-11-15 16:38:31 +00:00
pycore_dict_state.h gh-104252: Immortalize Py_EMPTY_KEYS (gh-104253) 2023-05-10 07:28:40 -06:00
pycore_dtoa.h gh-107211: No longer export internal functions (1) (#107213) 2023-07-25 03:44:11 +02:00
pycore_emscripten_signal.h GH-108614: Unbreak emscripten build (GH-109132) 2023-09-08 17:54:45 +01:00
pycore_emscripten_trampoline.h gh-106213: Make Emscripten trampolines work with JSPI (GH-106219) 2023-09-15 15:04:21 -07:00
pycore_exceptions.h bpo-46417: Factorize _PyExc_InitTypes() code (GH-30804) 2022-01-22 21:48:56 +01:00
pycore_faulthandler.h gh-108216: Cleanup #include in internal header files (#108228) 2023-08-21 18:05:59 +00:00
pycore_fileutils.h gh-112567: Add _Py_GetTicksPerSecond() function (#112587) 2023-12-01 17:05:56 +01:00
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-106320: Remove private float C API functions (#108430) 2023-08-24 19:09:49 +02:00
pycore_flowgraph.h gh-106149: move CFG and basicblock definitions into flowgraph.c, use them as opaque types in compile.c (#107639) 2023-08-10 13:03:47 +01:00
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-111354: remove comparisons with enum values, variable reuse, unused imports in genobject.c (#111708) 2023-11-09 10:27:20 +00:00
pycore_function.h gh-106581: Project through calls (#108067) 2023-08-17 11:29:58 -07:00
pycore_gc.h gh-105268: Add _Py_FROM_GC() function to pycore_gc.h (#105362) 2023-06-06 14:44:48 +02:00
pycore_genobject.h gh-107211: No longer export internal functions (5) (#108423) 2023-08-24 16:06:53 +00:00
pycore_getopt.h bpo-36763: Cleanup precmdline in _PyCoreConfig_Read() (GH-13371) 2019-05-17 03:15:12 +02:00
pycore_gil.h gh-109693: Update _gil_runtime_state.locked to use pyatomic.h (gh-110836) 2023-10-17 07:32:50 +09:00
pycore_global_objects.h gh-108216: Cleanup #include in internal header files (#108228) 2023-08-21 18:05:59 +00:00
pycore_global_objects_fini_generated.h gh-63284: Add support for TLS-PSK (pre-shared key) to the ssl module (#103181) 2023-11-27 04:01:44 +00:00
pycore_global_strings.h gh-63284: Add support for TLS-PSK (pre-shared key) to the ssl module (#103181) 2023-11-27 04:01:44 +00:00
pycore_hamt.h gh-81057: Move contextvars-related Globals to _PyRuntimeState (gh-99400) 2022-11-16 09:54:28 -07:00
pycore_hashtable.h gh-107211: No longer export internal functions (5) (#108423) 2023-08-24 16:06:53 +00:00
pycore_identifier.h gh-112026: Restore removed private C API (#112115) 2023-11-15 16:38:31 +00:00
pycore_import.h gh-107211: No longer export internal functions (5) (#108423) 2023-08-24 16:06:53 +00:00
pycore_importdl.h gh-111863: Rename `Py_NOGIL` to `Py_GIL_DISABLED` (#111864) 2023-11-20 15:52:00 +02:00
pycore_initconfig.h gh-108634: PyInterpreterState_New() no longer calls Py_FatalError() (#108748) 2023-09-01 12:43:30 +02:00
pycore_instruments.h gh-103615: Use local events for opcode tracing (GH-109472) 2023-11-03 16:39:50 +00:00
pycore_interp.h gh-103615: Use local events for opcode tracing (GH-109472) 2023-11-03 16:39:50 +00:00
pycore_intrinsics.h gh-108220: Internal header files require Py_BUILD_CORE to be defined (#108221) 2023-08-21 19:15:52 +02:00
pycore_list.h gh-106168: Revert the "size before item" setting (#111683) 2023-11-03 11:02:39 +00:00
pycore_llist.h gh-108724: Add PyMutex and _PyParkingLot APIs (gh-109344) 2023-09-19 09:54:29 -06:00
pycore_lock.h gh-111863: Rename `Py_NOGIL` to `Py_GIL_DISABLED` (#111864) 2023-11-20 15:52:00 +02:00
pycore_long.h gh-112026: Restore removed private C API (#112115) 2023-11-15 16:38:31 +00:00
pycore_memoryobject.h gh-106320: Remove private _PyManagedBuffer_Type (#108431) 2023-08-24 19:07:54 +02:00
pycore_mimalloc.h gh-90815: Add mimalloc memory allocator (#109914) 2023-10-30 15:43:11 +00:00
pycore_modsupport.h gh-111956: Add thread-safe one-time initialization. (gh-111960) 2023-11-16 12:19:54 -07:00
pycore_moduleobject.h gh-106320: Remove private _PyModule API (#107070) 2023-07-22 21:41:11 +00:00
pycore_namespace.h gh-107211: No longer export internal functions (4) (#107217) 2023-07-25 03:16:28 +00:00
pycore_object.h gh-111863: Rename `Py_NOGIL` to `Py_GIL_DISABLED` (#111864) 2023-11-20 15:52:00 +02:00
pycore_object_state.h gh-108634: Py_TRACE_REFS uses a hash table (#108663) 2023-08-31 18:33:34 +02:00
pycore_obmalloc.h gh-107211: No longer export internal functions (6) (#108424) 2023-08-24 17:28:35 +02:00
pycore_obmalloc_init.h gh-101659: Isolate "obmalloc" State to Each Interpreter (gh-101660) 2023-04-24 17:23:57 -06:00
pycore_opcode_metadata.h gh-112519: Make it possible to specify instruction flags for pseudo instructions in bytecodes.c (#112520) 2023-11-30 11:03:30 +00:00
pycore_opcode_utils.h gh-111354: simplify detection of RESUME after YIELD_VALUE at except-depth 1 (#111459) 2023-11-02 10:18:43 +00:00
pycore_optimizer.h GH-111339: Fix initialization and finalization of static optimizer types (GH-111430) 2023-10-29 13:53:25 -07:00
pycore_parking_lot.h gh-108724: Add PyMutex and _PyParkingLot APIs (gh-109344) 2023-09-19 09:54:29 -06:00
pycore_parser.h gh-110805: Allow the repl to show source code and complete tracebacks (#110775) 2023-10-13 09:25:37 +00:00
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_pybuffer.h gh-76785: Add SendChannel.send_buffer() (#110246) 2023-10-09 07:39:51 -06:00
pycore_pyerrors.h gh-76785: Move _Py_excinfo Functions Out of the Internal C-API (gh-111715) 2023-11-06 11:09:22 -07:00
pycore_pyhash.h gh-112026: Restore removed private C API (#112115) 2023-11-15 16:38:31 +00:00
pycore_pylifecycle.h gh-112567: Add _Py_GetTicksPerSecond() function (#112587) 2023-12-01 17:05:56 +01:00
pycore_pymath.h Remove unused internal macros (#102415) 2023-03-04 12:20:14 +00:00
pycore_pymem.h gh-107211: No longer export internal functions (4) (#107217) 2023-07-25 03:16:28 +00:00
pycore_pymem_init.h gh-90815: Add mimalloc memory allocator (#109914) 2023-10-30 15:43:11 +00:00
pycore_pystate.h gh-112026: Restore removed private C API (#112115) 2023-11-15 16:38:31 +00:00
pycore_pystats.h gh-108753: Enhance pystats (#108754) 2023-09-06 15:54:59 +00:00
pycore_pythonrun.h gh-106320: Remove private pythonrun API (#108599) 2023-08-29 04:18:52 +02:00
pycore_pythread.h GH-110829: Ensure Thread.join() joins the OS thread (#110848) 2023-11-04 13:59:24 +00:00
pycore_range.h gh-89189: More compact range iterator (GH-27986) 2022-11-30 23:04:30 +02:00
pycore_runtime.h gh-112567: Add _Py_GetTicksPerSecond() function (#112587) 2023-12-01 17:05:56 +01:00
pycore_runtime_init.h gh-76785: Crossinterp utils additions (gh-111530) 2023-11-01 17:36:40 -06:00
pycore_runtime_init_generated.h gh-63284: Add support for TLS-PSK (pre-shared key) to the ssl module (#103181) 2023-11-27 04:01:44 +00:00
pycore_semaphore.h gh-110014: Fix _POSIX_THREADS and _POSIX_SEMAPHORES usage (#110139) 2023-09-30 19:25:54 +02:00
pycore_setobject.h gh-107211: No longer export internal functions (7) (#108425) 2023-08-24 17:40:56 +02:00
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-94163: Add BINARY_SLICE and STORE_SLICE instructions. (GH-94168) 2022-06-27 12:24:23 +01:00
pycore_strhex.h gh-107211: No longer export pycore_strhex.h functions (#108229) 2023-08-21 18:12:22 +00:00
pycore_structseq.h gh-107211: No longer export internal functions (4) (#107217) 2023-07-25 03:16:28 +00:00
pycore_symtable.h gh-107211: Rename PySymtable_Lookup() to _PySymtable_Lookup() (#107212) 2023-07-25 00:54:09 +00:00
pycore_sysmodule.h gh-106320: Remove private _PySys functions (#108452) 2023-08-24 20:02:09 +00:00
pycore_time.h gh-112567: Add _PyTimeFraction C API (#112568) 2023-12-01 19:50:10 +01:00
pycore_token.h gh-107211: No longer export internal functions (7) (#108425) 2023-08-24 17:40:56 +02:00
pycore_traceback.h gh-110721: Use the traceback module for PyErr_Display() and fallback to the C implementation (#110702) 2023-10-12 14:52:14 +00:00
pycore_tracemalloc.h gh-107211: No longer export internal functions (3) (#107215) 2023-07-25 02:25:45 +00:00
pycore_tuple.h gh-106320: Remove _PyTuple_MaybeUntrack() C API (#107143) 2023-07-23 19:16:21 +00:00
pycore_typeobject.h gh-76785: Add _PyType_GetModuleName() to the Internal C-API (gh-112323) 2023-11-22 15:03:33 -07:00
pycore_typevarobject.h gh-104549: Set __module__ on TypeAliasType (#104550) 2023-05-18 15:56:15 -07:00
pycore_ucnhash.h gh-111972: Make Unicode name C APIcapsule initialization thread-safe (#112249) 2023-11-30 11:12:49 +01:00
pycore_unicodeobject.h gh-112026: Restore removed private C API (#112115) 2023-11-15 16:38:31 +00:00
pycore_unicodeobject_generated.h gh-63284: Add support for TLS-PSK (pre-shared key) to the ssl module (#103181) 2023-11-27 04:01:44 +00:00
pycore_unionobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
pycore_uops.h Rename ...Uop... to ...UOp... (uppercase O) for consistency (#112327) 2023-11-28 17:10:11 -08:00
pycore_warnings.h gh-107211: No longer export internal functions (3) (#107215) 2023-07-25 02:25:45 +00:00
pycore_weakref.h gh-111926: Update _PyWeakref_IS_DEAD to be thread-safe (gh-112267) 2023-11-20 07:36:45 +09:00