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* bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized ↵Eric Snow2022-02-0830-610/+422
| | | | | | | | | | | | | | | | | | | | | | | | | | | | global objects. (gh-30928) We're no longer using _Py_IDENTIFIER() (or _Py_static_string()) in any core CPython code. It is still used in a number of non-builtin stdlib modules. The replacement is: PyUnicodeObject (not pointer) fields under _PyRuntimeState, statically initialized as part of _PyRuntime. A new _Py_GET_GLOBAL_IDENTIFIER() macro facilitates lookup of the fields (along with _Py_GET_GLOBAL_STRING() for non-identifier strings). https://bugs.python.org/issue46541#msg411799 explains the rationale for this change. The core of the change is in: * (new) Include/internal/pycore_global_strings.h - the declarations for the global strings, along with the macros * Include/internal/pycore_runtime_init.h - added the static initializers for the global strings * Include/internal/pycore_global_objects.h - where the struct in pycore_global_strings.h is hooked into _PyRuntimeState * Tools/scripts/generate_global_objects.py - added generation of the global string declarations and static initializers I've also added a --check flag to generate_global_objects.py (along with make check-global-objects) to check for unused global strings. That check is added to the PR CI config. The remainder of this change updates the core code to use _Py_GET_GLOBAL_IDENTIFIER() instead of _Py_IDENTIFIER() and the related _Py*Id functions (likewise for _Py_GET_GLOBAL_STRING() instead of _Py_static_string()). This includes adding a few functions where there wasn't already an alternative to _Py*Id(), replacing the _Py_Identifier * parameter with PyObject *. The following are not changed (yet): * stop using _Py_IDENTIFIER() in the stdlib modules * (maybe) get rid of _Py_IDENTIFIER(), etc. entirely -- this may not be doable as at least one package on PyPI using this (private) API * (maybe) intern the strings during runtime init https://bugs.python.org/issue46541
* bpo-46675: Allow object value arrays and split key dictionaries larger than ↵Mark Shannon2022-02-081-39/+59
| | | | 16 (GH-31191)
* bpo-46670: Remove unused macros in the Objects directory (GH-31193)Victor Stinner2022-02-074-12/+0
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* bpo-46670: Test if a macro is defined, not its value (GH-31178)Victor Stinner2022-02-071-3/+3
| | | | | | | | * audioop.c: #ifdef WORDS_BIGENDIAN * ctypes.h: #ifdef USING_MALLOC_CLOSURE_DOT_C * _ctypes/malloc_closure.c: #ifdef HAVE_FFI_CLOSURE_ALLOC and #ifdef USING_APPLE_OS_LIBFFI * pytime.c: #ifdef __APPLE__ * unicodeobject.c: #ifdef HAVE_NON_UNICODE_WCHAR_T_REPRESENTATION
* bpo-46670: Define all macros for stringlib (GH-31176)Victor Stinner2022-02-0710-17/+24
| | | | | bytesobject.c, bytearrayobject.c and unicodeobject.c now define all macros used by stringlib, to avoid using undefined macros. Fix "gcc -Wundef" warnings.
* bpo-46670: Remove unused get_frame_state() function (GH-31177)Victor Stinner2022-02-071-9/+0
| | | The PyFrame_MAXFREELIST macro is no longer defined.
* Pass reference to func, as well as args, when pushing frame. (GH-31100)Mark Shannon2022-02-031-0/+2
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* bpo-44977: Deprecate delegation of int to __trunc__ (GH-31031)Zackery Spytz2022-02-031-0/+5
| | | | | Calling int(a) when type(a) implements __trunc__ but not __int__ or __index__ now raises a DeprecationWarning.
* bpo-46433: _PyType_GetModuleByDef: handle static types in MRO (GH-30696)Petr Viktorin2022-02-021-5/+4
| | | Automerge-Triggered-By: GH:encukou
* bpo-46072: Add some frame stats. (GH-31060)Mark Shannon2022-02-021-0/+1
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* bpo-46072: Add some object layout and allocation stats (GH-31051)Mark Shannon2022-02-012-0/+16
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* bpo-46564: do not create frame object for super object (GH-31002)Kumar Aditya2022-02-011-12/+8
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* bpo-46407: Fix long_mod refleak (GH-31025)Ken Jin2022-01-311-1/+1
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* bpo-46417: _PyStructSequence_FiniType() updates _Py_RefTotal (GH-30988)Victor Stinner2022-01-281-0/+3
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* bpo-46407: Optimizing some modulo operations (GH-30653)Crowthebird2022-01-281-9/+106
| | | | | | | Added new internal functions to compute mod without also computing the quotient. The loops can be leaner then, which leads to modestly but reliably faster execution in contexts that know they don't need the quotient. Code by Jeremiah Vivian (Pascual).
* bpo-40170: Remove PyHeapType_GET_MEMBERS() macro (GH-30942)Victor Stinner2022-01-271-6/+6
| | | | | | | | Remove the PyHeapType_GET_MEMBERS() macro. It was exposed in the public C API by mistake, it must only be used by Python internally. Use the PyTypeObject.tp_members member instead. Rename PyHeapType_GET_MEMBERS() to _PyHeapType_GET_MEMBERS() and move it to the internal C API.
* bpo-40170: Move _Py_GetAllocatedBlocks() to pycore_pymem.h (GH-30943)Victor Stinner2022-01-271-3/+0
| | | | | Move _Py_GetAllocatedBlocks() and _PyObject_DebugMallocStats() declarations to pycore_pymem.h. These functions are related to memory allocators, not to the PyObject structure.
* bpo-46476: Simplify and fix _PyStaticCode_Dealloc (GH-30965)Christian Heimes2022-01-271-5/+8
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* bpo-46476: Fix memory leak in code objects generated by deepfreeze (GH-30853)Kumar Aditya2022-01-271-0/+15
| | | Add _Py_Deepfreeze_Fini() and _PyStaticCode_Dealloc() functions.
* bpo-40170: Remove _Py_GetAllocatedBlocks() function (GH-30940)Victor Stinner2022-01-271-1/+5
| | | | Move _Py_GetAllocatedBlocks() and _PyObject_DebugMallocStats() private functions to the internal C API.
* bpo-40170: PyType_SUPPORTS_WEAKREFS() becomes a regular function (GH-30938)Victor Stinner2022-01-273-5/+14
| | | | | | | | Convert the PyType_SUPPORTS_WEAKREFS() macro to a regular function. It no longer access the PyTypeObject.tp_weaklistoffset member directly. Add _PyType_SUPPORTS_WEAKREFS() static inline functions, used internally by Python for best performance.
* bpo-46527: allow calling enumerate(iterable=...) again (GH-30904)Jelle Zijlstra2022-01-261-10/+37
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* bpo-46504: faster code for trial quotient in x_divrem() (GH-30856)Tim Peters2022-01-251-1/+8
| | | | | | | | | | * bpo-46504: faster code for trial quotient in x_divrem() This brings x_divrem() back into synch with x_divrem1(), which was changed in bpo-46406 to generate faster code to find machine-word division quotients and remainders. Modern processors compute both with a single machine instruction, but convincing C to exploit that requires writing _less_ "clever" C code.
* bpo-46431: improve error message on invalid calls to ↵Irit Katriel2022-01-241-1/+4
| | | | BaseExceptionGroup.__new__ (GH-30854)
* bpo-43683: Streamline YIELD_VALUE and SEND (GH-30723)Mark Shannon2022-01-241-2/+4
| | | | | | | | * Split YIELD_VALUE into ASYNC_GEN_WRAP; YIELD_VALUE for async generators. * Split SEND into SEND; YIELD_VALUE. * Document new opcodes.
* bpo-46481: Implement vectorcall for weakref.ref.__call__ method. (GH-30820)Dong-hee Na2022-01-231-50/+30
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* bpo-46406: Faster single digit int division. (#30626)Gregory P. Smith2022-01-231-10/+26
| | | | | | | | | * bpo-46406: Faster single digit int division. This expresses the algorithm in a more basic manner resulting in better instruction generation by todays compilers. See https://mail.python.org/archives/list/python-dev@python.org/thread/ZICIMX5VFCX4IOFH5NUPVHCUJCQ4Q7QM/#NEUNFZU3TQU4CPTYZNF3WCN7DOJBBTK5
* bpo-46417: _PyList_Fini() clears indexerr (GH-30815)Victor Stinner2022-01-231-2/+6
| | | _PyList_Fini() now clears the 'indexerr' error message.
* bpo-46417: Fix _PyStaticType_Dealloc() (GH-30810)Victor Stinner2022-01-221-3/+11
| | | | _PyStaticType_Dealloc() now only calls PyObject_ClearWeakRefs() if the call is not going to fail.
* bpo-46417: Clear Unicode static types at exit (GH-30806)Victor Stinner2022-01-224-22/+23
| | | | | | | | | | | Add _PyUnicode_FiniTypes() function, called by finalize_interp_types(). It clears these static types: * EncodingMapType * PyFieldNameIter_Type * PyFormatterIter_Type _PyStaticType_Dealloc() now does nothing if tp_subclasses is not NULL.
* bpo-46417: Py_Finalize() clears static exceptioins (GH-30805)Victor Stinner2022-01-221-1/+26
| | | | | | The Py_Finalize() function now clears exceptions implemented as static types. Add _PyExc_FiniTypes() function, called by _PyExc_Fini().
* bpo-46417: Factorize _PyExc_InitTypes() code (GH-30804)Victor Stinner2022-01-221-170/+132
| | | | | | | | Add 'static_exceptions' list to factorize code between _PyExc_InitTypes() and _PyBuiltins_AddExceptions(). _PyExc_InitTypes() does nothing if it's not the main interpreter. Sort exceptions in Lib/test/exception_hierarchy.txt.
* bpo-46417: _PyTypes_FiniTypes() clears object and type (GH-30798)Victor Stinner2022-01-221-15/+11
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* bpo-46417: Cleanup typeobject.c code (GH-30795)Victor Stinner2022-01-221-159/+164
| | | | | | | | | | | | | | | | | | | | | | * Add comment to recurse_down_subclasses() explaining why it's safe to use a borrowed reference to tp_subclasses. * remove_all_subclasses() no longer accept NULL cases * type_set_bases() now relies on the fact that new_bases is not NULL. * type_dealloc_common() avoids PyErr_Fetch/PyErr_Restore if tp_bases is NULL. * remove_all_subclasses() makes sure that no exception is raised. * Don't test at runtime if tp_mro only contains types: rely on _PyType_CAST() assertion for that. * _PyStaticType_Dealloc() no longer clears tp_subclasses which is already NULL. * mro_hierarchy() avoids calling _PyType_GetSubclasses() if tp_subclasses is NULL. Coding style: * Use Py_NewRef(). * Add braces and move variable declarations to the first variable assignement. * Rename a few variables and parameters to use better names.
* bpo-46417: Clear more static types (GH-30796)Victor Stinner2022-01-221-0/+15
| | | | | | | * Move PyContext static types into object.c static_types list. * Rename PyContextTokenMissing_Type to _PyContextTokenMissing_Type and declare it in pycore_context.h. * _PyHamtItems types are no long exported: replace PyAPI_DATA() with extern.
* bpo-46417: remove_subclass() clears tp_subclasses (GH-30793)Victor Stinner2022-01-221-9/+15
| | | | | | | | | The remove_subclass() function now deletes the dictionary when removing the last subclass (if the dictionary becomes empty) to save memory: set PyTypeObject.tp_subclasses to NULL. remove_subclass() is called when a type is deallocated. _PyType_GetSubclasses() no longer holds a reference to tp_subclasses: its loop cannot modify tp_subclasses.
* bpo-46417: Fix race condition on setting type __bases__ (GH-30788)Victor Stinner2022-01-221-11/+16
| | | | | | | Fix a race condition on setting a type __bases__ attribute: the internal function add_subclass() now gets the PyTypeObject.tp_subclasses member after calling PyWeakref_NewRef() which can trigger a garbage collection which can indirectly modify PyTypeObject.tp_subclasses.
* bpo-46417: Use _PyType_CAST() in Objects directory (GH-30764)Victor Stinner2022-01-219-20/+13
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* bpo-46417: Add _PyType_GetSubclasses() function (GH-30761)Victor Stinner2022-01-211-40/+60
| | | | | | | | | | | | | | Add a new _PyType_GetSubclasses() function to get type's subclasses. _PyType_GetSubclasses(type) returns a list which holds strong refererences to subclasses. It is safer than iterating on type->tp_subclasses which yields weak references and can be modified in the loop. _PyType_GetSubclasses(type) now holds a reference to the tp_subclasses dict while creating the list of subclasses. set_collection_flag_recursive() of _abc.c now uses _PyType_GetSubclasses().
* bpo-46417: Add _PyType_CAST() macro (GH-30760)Victor Stinner2022-01-211-57/+47
| | | | In debug mode, the macro makes sure that its argument is a type using an assertion.
* bpo-46417: Add missing types of _PyTypes_InitTypes() (GH-30749)Victor Stinner2022-01-213-3/+11
| | | | | | | | | Add types removed by mistake by the commit adding _PyTypes_FiniTypes(). Move also PyBool_Type at the end, since it depends on PyLong_Type. PyBytes_Type and PyUnicode_Type no longer depend explicitly on PyBaseObject_Type: it's the default of PyType_Ready().
* bpo-46417: Revert remove_subclass() change (GH-30750)Victor Stinner2022-01-211-4/+0
| | | | remove_subclass() doesn't clear the tp_subclasses dict if the dict becomes empty.
* bpo-46417: Py_Finalize() clears static types (GH-30743)Victor Stinner2022-01-212-85/+142
| | | | | | | Add _PyTypes_FiniTypes() best-effort function to clear static types: don't deallocate a type if it still has subclasses. remove_subclass() now sets tp_subclasses to NULL when removing the last subclass.
* bpo-46417: _curses uses PyStructSequence_NewType() (GH-30736)Victor Stinner2022-01-213-2/+11
| | | | | | | | The _curses module now creates its ncurses_version type as a heap type using PyStructSequence_NewType(), rather than using a static type. * Move _PyStructSequence_FiniType() definition to pycore_structseq.h. * test.pythoninfo: log curses.ncurses_version.
* bpo-46417: Finalize structseq types at exit (GH-30645)Victor Stinner2022-01-214-2/+70
| | | | | | | | | | | | | | | | | | Add _PyStructSequence_FiniType() and _PyStaticType_Dealloc() functions to finalize a structseq static type in Py_Finalize(). Currrently, these functions do nothing if Python is built in release mode. Clear static types: * AsyncGenHooksType: sys.set_asyncgen_hooks() * FlagsType: sys.flags * FloatInfoType: sys.float_info * Hash_InfoType: sys.hash_info * Int_InfoType: sys.int_info * ThreadInfoType: sys.thread_info * UnraisableHookArgsType: sys.unraisablehook * VersionInfoType: sys.version * WindowsVersionType: sys.getwindowsversion()
* bpo-46409: Make generators in bytecode (GH-30633)Mark Shannon2022-01-202-24/+43
| | | | | | | | | | | | * Add RETURN_GENERATOR and JUMP_NO_INTERRUPT opcodes. * Trim frame and generator by word each. * Minor refactor of frame.c * Update test.test_sys to account for smaller frames. * Treat generator functions as normal functions when evaluating and specializing.
* docs: correct outdated MappingProxyType docstrings (#30281)Joshua Bronson2022-01-191-3/+3
| | | | | The docstrings for MappingProxyType's keys(), values(), and items() methods were never updated to reflect the changes that Python 3 brought to these APIs, namely returning views rather than lists.
* bpo-42161: Hoist the _PyLong_GetOne() call out of the inner loop. (GH-30656)Raymond Hettinger2022-01-181-2/+4
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* bpo-46361: Fix "small" `int` caching (GH-30583)Brandt Bucher2022-01-161-1/+1
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* bpo-46020: Optimize long_pow for the common case (GH-30555)Tim Peters2022-01-121-6/+13
| | | | This cuts a bit of overhead by not initializing the table of small odd powers unless it's needed for a large exponent.
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