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* gh-87729: add LOAD_SUPER_ATTR instruction for faster super() (#103497)Carl Meyer2023-04-241-28/+65
| | | | | This speeds up `super()` (by around 85%, for a simple one-level `super().meth()` microbenchmark) by avoiding allocation of a new single-use `super()` object on each use.
* gh-99184: Bypass instance attribute access in `repr` of `weakref.ref` (#99244)Nikita Sobolev2023-04-241-4/+1
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* gh-103091: Add PyUnstable_Type_AssignVersionTag (#103095)Brett Simmers2023-04-241-0/+5
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* gh-103712: Increase the length of the type name in AttributeError messages ↵Alex Gaynor2023-04-242-5/+5
| | | | (#103713)
* gh-84436: Implement Immortal Objects (gh-19474)Eddie Elizondo2023-04-228-76/+138
| | | | | | | | | This is the implementation of PEP683 Motivation: The PR introduces the ability to immortalize instances in CPython which bypasses reference counting. Tagging objects as immortal allows up to skip certain operations when we know that the object will be around for the entire execution of the runtime. Note that this by itself will bring a performance regression to the runtime due to the extra reference count checks. However, this brings the ability of having truly immutable objects that are useful in other contexts such as immutable data sharing between sub-interpreters.
* gh-83791: Raise TypeError for len(memoryview_0d) (#18463)Eric Wieser2023-04-221-1/+5
| | | Changes the behaviour of `len` on a zero-dimensional `memoryview` to raise `TypeError`. Previously, `len` would return `1`.
* gh-103092: Isolate winreg (#103250)AN Long2023-04-171-6/+0
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* GH-103082: Implementation of PEP 669: Low Impact Monitoring for CPython ↵Mark Shannon2023-04-123-137/+142
| | | | | | | | | | (GH-103083) * The majority of the monitoring code is in instrumentation.c * The new instrumentation bytecodes are in bytecodes.c * legacy_tracing.c adapts the new API to the old sys.setrace and sys.setprofile APIs
* gh-87864: Use correct function definition syntax in the docs (#103312)Nikita Sobolev2023-04-111-4/+4
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* gh-77757: replace exception wrapping by PEP-678 notes in typeobject's ↵Irit Katriel2023-04-111-2/+4
| | | | __set_name__ (#103402)
* gh-102213: Revert "gh-102213: Optimize the performance of `__getattr__` ↵Nikita Sobolev2023-04-072-12/+3
| | | | | (GH-102248)" (GH-103332) This reverts commit aa0a73d1bc53dcb6348a869df1e775138991e561.
* gh-101865: Deprecate `co_lnotab` from code objects as per PEP 626 (#101866)Nikita Sobolev2023-04-031-0/+5
| | | Co-authored-by: Oleg Iarygin <oleg@arhadthedev.net>
* GH-89987: Shrink the BINARY_SUBSCR caches (GH-103022)Brandt Bucher2023-03-291-0/+10
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* gh-100227: Move the Dict of Interned Strings to PyInterpreterState (gh-102339)Eric Snow2023-03-281-42/+56
| | | | | We can revisit the options for keeping it global later, if desired. For now the approach seems quite complex, so we've gone with the simpler isolation solution in the meantime. https://github.com/python/cpython/issues/100227
* gh-100227: Revert gh-102925 "gh-100227: Make the Global Interned Dict Safe ↵Eric Snow2023-03-271-4/+9
| | | | | | | for Isolated Interpreters" (gh-103063) This reverts commit 87be8d9. This approach to keeping the interned strings safe is turning out to be too complex for my taste (due to obmalloc isolation). For now I'm going with the simpler solution, making the dict per-interpreter. We can revisit that later if we want a sharing solution.
* gh-102941: Fix "‘subobj’ may be used uninitialized in this function" ↵Nikita Sobolev2023-03-271-1/+1
| | | | warning in `bytes_methods.c` (#102942)
* GH-100982: Break up COMPARE_AND_BRANCH (GH-102801)Brandt Bucher2023-03-231-8/+0
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* gh-100227: Make the Global Interned Dict Safe for Isolated Interpreters ↵Eric Snow2023-03-231-9/+4
| | | | | | | | | (gh-102925) This is effectively two changes. The first (the bulk of the change) is where we add _Py_AddToGlobalDict() (and _PyRuntime.cached_objects.main_tstate, etc.). The second (much smaller) change is where we update PyUnicode_InternInPlace() to use _Py_AddToGlobalDict() instead of calling PyDict_SetDefault() directly. Basically, _Py_AddToGlobalDict() is a wrapper around PyDict_SetDefault() that should be used whenever we need to add a value to a runtime-global dict object (in the few cases where we are leaving the container global rather than moving it to PyInterpreterState, e.g. the interned strings dict). _Py_AddToGlobalDict() does all the necessary work to make sure the target global dict is shared safely between isolated interpreters. This is especially important as we move the obmalloc state to each interpreter (gh-101660), as well as, potentially, the GIL (PEP 684). https://github.com/python/cpython/issues/100227
* gh-102859: Remove JUMP_IF_FALSE_OR_POP and JUMP_IF_TRUE_OR_POP (#102870)Irit Katriel2023-03-221-12/+2
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* GH-101291: Rearrange the size bits in PyLongObject (GH-102464)Mark Shannon2023-03-227-392/+345
| | | | | | | | | | * Eliminate all remaining uses of Py_SIZE and Py_SET_SIZE on PyLongObject, adding asserts. * Change layout of size/sign bits in longobject to support future addition of immortal ints and tagged medium ints. * Add functions to hide some internals of long object, and for setting sign and digit count. * Replace uses of IS_MEDIUM_VALUE macro with _PyLong_IsCompact().
* gh-102406: replace exception chaining by PEP-678 notes in codecs (#102407)Irit Katriel2023-03-211-110/+0
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* gh-102304: Move the Total Refcount to PyInterpreterState (gh-102545)Eric Snow2023-03-216-31/+82
| | | | | Moving it valuable with a per-interpreter GIL. However, it is also useful without one, since it allows us to identify refleaks within a single interpreter or where references are escaping an interpreter. This becomes more important as we move the obmalloc state to PyInterpreterState. https://github.com/python/cpython/issues/102304
* gh-102304: Move _Py_RefTotal to _PyRuntimeState (gh-102543)Eric Snow2023-03-201-25/+76
| | | | | | | The essentially eliminates the global variable, with the associated benefits. This is also a precursor to isolating this bit of state to PyInterpreterState. Folks that currently read _Py_RefTotal directly would have to start using _Py_GetGlobalRefTotal() instead. https://github.com/python/cpython/issues/102304
* gh-102701: Fix overflow in dictobject.c (GH-102750)Inada Naoki2023-03-171-1/+1
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* gh-102594: PyErr_SetObject adds note to exception raised on normalization ↵Irit Katriel2023-03-161-0/+15
| | | | error (#102675)
* GH-100227: cleanup initialization of global interned dict (#102682)Kumar Aditya2023-03-141-8/+10
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* gh-79940: add introspection API for asynchronous generators to `inspect` ↵Thomas Krennwallner2023-03-111-0/+10
| | | | module (#11590)
* gh-102213: Optimize the performance of `__getattr__` (GH-102248)wangxiang-hz2023-03-112-3/+12
| | | | When __getattr__ is defined, python with try to find an attribute using _PyObject_GenericGetAttrWithDict find nothing is reasonable so we don't need an exception, it will hurt performance.
* gh-102255: Improve build support for Windows API partitions (GH-102256)Max Bachmann2023-03-091-1/+0
| | | | | Add `MS_WINDOWS_DESKTOP`, `MS_WINDOWS_APPS`, `MS_WINDOWS_SYSTEM` and `MS_WINDOWS_GAMES` preprocessor definitions to allow switching off functionality missing from particular API partitions ("partitions" are used in Windows to identify overlapping subsets of APIs). CPython only officially supports `MS_WINDOWS_DESKTOP` and `MS_WINDOWS_SYSTEM` (APPS is included by normal desktop builds, but APPS without DESKTOP is not covered). Other configurations are a convenience for people building their own runtimes. `MS_WINDOWS_GAMES` is for the Xbox subset of the Windows API, which is also available on client OS, but is restricted compared to `MS_WINDOWS_DESKTOP`. These restrictions may change over time, as they relate to the build headers rather than the OS support, and so we assume that Xbox builds will use the latest available version of the GDK.
* gh-100227: Move dict_state.global_version to PyInterpreterState (gh-102338)Eric Snow2023-03-091-90/+146
| | | https://github.com/python/cpython/issues/100227
* gh-100227: Move next_keys_version to PyInterpreterState (gh-102335)Eric Snow2023-03-091-3/+4
| | | https://github.com/python/cpython/issues/100227
* gh-100227: Move func_state.next_version to PyInterpreterState (gh-102334)Eric Snow2023-03-081-2/+3
| | | https://github.com/python/cpython/issues/100227
* gh-102304: Consolidate Direct Usage of _Py_RefTotal (gh-102514)Eric Snow2023-03-086-32/+84
| | | | | This simplifies further changes to _Py_RefTotal (e.g. make it atomic or move it to PyInterpreterState). https://github.com/python/cpython/issues/102304
* gh-102192: Replace PyErr_Fetch/Restore etc by more efficient alternatives ↵Irit Katriel2023-03-088-106/+51
| | | | (in Objects/) (#102218)
* fix typo in async generator code field name `ag_code` (#102448)Kumar Aditya2023-03-081-1/+1
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* gh-102381: don't call watcher callback with dead object (#102382)Carl Meyer2023-03-083-5/+105
| | | Co-authored-by: T. Wouters <thomas@python.org>
* gh-90110: Fix the c-analyzer Tool (#102483)Eric Snow2023-03-071-9/+4
| | | | | | | Some incompatible changes had gone in, and the "ignore" lists weren't properly undated. This change fixes that. It's necessary prior to enabling test_check_c_globals, which I hope to do soon. Note that this does include moving last_resort_memory_error to PyInterpreterState. https://github.com/python/cpython/issues/90110
* gh-101892: Fix `SystemError` when a callable iterator call exhausts the ↵Raj2023-03-041-2/+2
| | | | | iterator (#101896) Co-authored-by: Oleg Iarygin <oleg@arhadthedev.net>
* gh-102371: move _Py_Mangle from compile.c to symtable.c (#102372)Irit Katriel2023-03-021-1/+1
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* Fix typos in documentation and comments (GH-102374)Michael K2023-03-021-2/+2
| | | | | | | | Found some duplicate `to`s in the documentation and some code comments and fixed them. [Misc/NEWS.d/3.12.0a1.rst](https://github.com/python/cpython/blob/ed55c69ebd74178115cd8b080f7f8e7588cd5fda/Misc/NEWS.d/3.12.0a1.rst) also contains two duplicate `to`s, but I wasn't sure if it's ok to touch that file. Looks auto generated. I'm happy to amend the PR if requested. :) Automerge-Triggered-By: GH:AlexWaygood
* gh-101101: Unstable C API tier (PEP 689) (GH-101102)Petr Viktorin2023-02-281-4/+5
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* gh-101825: Clarify that as_integer_ratio() output is always normalized (#101843)Sergey B Kirpichev2023-02-274-20/+14
| | | | | | | | | Make docstrings for `as_integer_ratio` consistent across types, and document that the returned pair is always normalized (coprime integers, with positive denominator). --------- Co-authored-by: Owain Davies <116417456+OTheDev@users.noreply.github.com> Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
* gh-101765: unicodeobject: use Py_XDECREF correctly (#102283)Jelle Zijlstra2023-02-261-1/+1
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* gh-101765: Fix refcount issues in list and unicode pickling (#102265)Jelle Zijlstra2023-02-262-1/+11
| | | Followup from #101769.
* gh-101765: Fix SystemError / segmentation fault in iter `__reduce__` when ↵Ionite2023-02-247-23/+66
| | | | internal access of `builtins.__dict__` exhausts the iterator (#101769)
* GH-100719: Remove redundant `gi_code` field from generator object. (GH-100749)Mark Shannon2023-02-231-17/+55
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* Revert "bpo-46978: Correct docstrings for in-place builtin operators #31802) ↵Irit Katriel2023-02-231-1/+1
| | | | | | | (#102146) Revert "bpo-46978: Correct docstrings for in-place builtin operators (#31802)" This reverts commit 128379b8cdb88a6d3d7fed24df082c9a654b3fb8.
* gh-101907: Stop using `_Py_OPCODE` and `_Py_OPARG` macros (GH-101912)Steve Dower2023-02-204-29/+29
| | | | | | * gh-101907: Removes use of non-standard C++ extension from Include/cpython/code.h * Make cases_generator correct on Windows
* GH-84783: Make the slice object hashable (GH-101264)Furkan Onder2023-02-192-2/+38
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* bpo-46978: Correct docstrings for in-place builtin operators (#31802)Nicko van Someren2023-02-181-1/+1
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