Commit Graph

546 Commits

Author SHA1 Message Date
Géry Ogam a95138b2c5
bpo-43857: Improve the AttributeError message when deleting a missing attribute (#25424)
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
2022-05-05 06:37:26 -07:00
Mark Shannon 836b17c9c3
Add more stats for freelist use and allocations. (GH-92211) 2022-05-03 16:40:24 -06:00
Victor Stinner 804f2529d8
gh-91320: Use _PyCFunction_CAST() (#92251)
Replace "(PyCFunction)(void(*)(void))func" cast with
_PyCFunction_CAST(func).

Change generated by the command:

sed -i -e \
  's!(PyCFunction)(void(\*)(void)) *\([A-Za-z0-9_]\+\)!_PyCFunction_CAST(\1)!g' \
  $(find -name "*.c")
2022-05-03 21:42:14 +02:00
Victor Stinner c14d7e4b81
bpo-47164: Add _PyASCIIObject_CAST() macro (GH-32191)
Add macros to cast objects to PyASCIIObject*, PyCompactUnicodeObject*
and PyUnicodeObject*: _PyASCIIObject_CAST(),
_PyCompactUnicodeObject_CAST() and _PyUnicodeObject_CAST(). Using
these new macros make the code more readable and check their argument
with: assert(PyUnicode_Check(op)).

Remove redundant assert(PyUnicode_Check(op)) in macros using directly
or indirectly these new CAST macros.

Replacing existing casts with these macros.
2022-03-31 09:59:27 +02:00
Mark Shannon 03c2a36b2b
bpo-46903: Handle str-subclasses in virtual instance dictionaries. (GH-31658) 2022-03-04 11:31:29 +00:00
Inada Naoki 3241cba4ec
dict: Fix refleak (GH-31650) 2022-03-03 14:30:58 +09:00
Inada Naoki 03642df1a1
dict: Internal cleanup (GH-31641)
* Make empty_key from split table to combined table.
* Use unicode_get_hash() when possible.
2022-03-02 19:05:12 +09:00
Inada Naoki 9833bb91e4
bpo-46845: Reduce dict size when all keys are Unicode (GH-31564) 2022-03-02 08:09:28 +09:00
Victor Stinner 042f31da55
bpo-45459: C API uses type names rather than structure names (GH-31528)
Thanks to the new pytypedefs.h, it becomes to use type names like
PyObject rather like structure names like "struct _object".
2022-02-24 17:51:59 +01:00
Inada Naoki 1e344684d8
dict: Add dk_log2_index_bytes (GH-31439) 2022-02-22 11:03:15 +00:00
Inada Naoki 5543d9c559
dict: Use DK_LOG_SIZE in hot loop. (GH-31405)
DK_LOG_SIZE(key) < 8 is faster than DK_SIZE(key) <= 0xff, at least on GCC.
2022-02-19 13:15:20 +09:00
Eric Snow 81c72044a1
bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized 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
2022-02-08 13:39:07 -07:00
Mark Shannon 25db2b361b
bpo-46675: Allow object value arrays and split key dictionaries larger than 16 (GH-31191) 2022-02-08 11:50:38 +00:00
Victor Stinner 760349198d
bpo-46670: Remove unused macros in the Objects directory (GH-31193) 2022-02-07 16:21:41 +01:00
Mark Shannon 48be46ec1f
bpo-46072: Add some object layout and allocation stats (GH-31051) 2022-02-01 15:05:18 +00:00
Victor Stinner ac1f152421
bpo-46417: Use _PyType_CAST() in Objects directory (GH-30764) 2022-01-21 23:33:43 +01:00
Mark Shannon 8319114fee
bpo-45947: Place dict and values pointer at fixed (negative) offset just before GC header. (GH-29879)
* Place __dict__ immediately before GC header for plain Python objects.

* Fix up lazy dict creation logic to use managed dict pointers.

* Manage values pointer, placing them directly before managed dict pointers.

* Convert hint-based load/store attr specialization target managed dict classes.

* Specialize LOAD_METHOD for managed dict objects.

* Remove unsafe _PyObject_GC_Calloc function.

* Remove unsafe _PyObject_GC_Malloc() function.

* Add comment explaning use of Py_TPFLAGS_MANAGED_DICT.
2021-12-07 16:02:53 +00:00
Dennis Sweeney 036fead695
bpo-45609: Specialize STORE_SUBSCR (GH-29242)
* Specialize STORE_SUBSCR for list[int], and dict[object]

* Adds _PyDict_SetItem_Take2 which consumes references to the key and values.
2021-11-19 10:30:37 +00:00
Christian Heimes 9942f42a93
bpo-45522: Allow to disable freelists on build time (GH-29056)
Freelists for object structs can now be disabled. A new ``configure``
option ``--without-freelists`` can be used to disable all freelists
except empty tuple singleton. Internal Py*_MAXFREELIST macros can now
be defined as 0 without causing compiler warnings and segfaults.

Signed-off-by: Christian Heimes <christian@python.org>
2021-10-21 06:12:20 -07:00
Mark Shannon a8b9350964
bpo-45340: Don't create object dictionaries unless actually needed (GH-28802)
* Never change types' cached keys. It could invalidate inline attribute objects.

* Lazily create object dictionaries.

* Update specialization of LOAD/STORE_ATTR.

* Don't update shared keys version for deletion of value.

* Update gdb support to handle instance values.

* Rename SPLIT_KEYS opcodes to INSTANCE_VALUE.
2021-10-13 14:19:34 +01:00
Victor Stinner d943d19172
bpo-45439: Move _PyObject_CallNoArgs() to pycore_call.h (GH-28895)
* Move _PyObject_CallNoArgs() to pycore_call.h (internal C API).
* _ssl, _sqlite and _testcapi extensions now call the public
  PyObject_CallNoArgs() function, rather than _PyObject_CallNoArgs().
* _lsprof extension is now built with Py_BUILD_CORE_MODULE macro
  defined to get access to internal _PyObject_CallNoArgs().
2021-10-12 08:38:19 +02:00
Victor Stinner ce3489cfdb
bpo-45439: Rename _PyObject_CallNoArg() to _PyObject_CallNoArgs() (GH-28891)
Fix typo in the private _PyObject_CallNoArg() function name: rename
it to _PyObject_CallNoArgs() to be consistent with the public
function PyObject_CallNoArgs().
2021-10-12 00:42:23 +02:00
Mark Shannon a7252f88d3
bpo-40116: Add insertion order bit-vector to dict values to allow dicts to share keys more freely. (GH-28520) 2021-10-06 13:19:53 +01:00
Serhiy Storchaka f25f2e2e8c
Clean up initialization __class_getitem__ with Py_GenericAlias. (GH-28450)
The cast to PyCFunction is redundant. Overuse of redundant casts
can hide actual bugs.
2021-09-19 18:05:30 +03:00
Mark Shannon 064464fc38
bpo-45219: Factor dictkey indexing (GH-28389) 2021-09-17 12:20:51 +01:00
Mark Shannon ac75f6bdd4
bpo-44826: Specialize STORE_ATTR (GH-27590)
* Generalize cache names for LOAD_ATTR to allow store and delete specializations.

* Factor out specialization of attribute dictionary access.

* Specialize STORE_ATTR.
2021-08-09 10:40:21 +01:00
Mark Shannon cee67fa661
bpo-44821: Eagerly assign __dict__ for new objects. (GH-27589) 2021-08-04 16:41:14 +01:00
Mark Shannon e06ae75e16
bpo-44206: Make sure that dict-keys's version is set to zero when value is popped (GH-27542) 2021-08-02 14:54:23 +01:00
Victor Stinner 818628c2da
bpo-44531: Add _PyType_AllocNoTrack() function (GH-26947)
Add an internal _PyType_AllocNoTrack() function to allocate an object
without tracking it in the GC.

Modify dict_new() to use _PyType_AllocNoTrack(): dict subclasses are
now only tracked once all PyDictObject members are initialized.
Calling _PyObject_GC_UNTRACK() is no longer needed for the dict type.

Similar change in tuple_subtype_new() for tuple subclasses.

Replace tuple_gc_track() with _PyObject_GC_TRACK().
2021-07-01 02:30:46 +02:00
Mark Shannon e117c02837
bpo-44337: Port LOAD_ATTR to PEP 659 adaptive interpreter (GH-26595)
* Specialize LOAD_ATTR with  LOAD_ATTR_SLOT and LOAD_ATTR_SPLIT_KEYS

* Move dict-common.h to internal/pycore_dict.h

* Add LOAD_ATTR_WITH_HINT specialized opcode.

* Quicken in function if loopy

* Specialize LOAD_ATTR for module attributes.

* Add specialization stats
2021-06-10 08:46:01 +01:00
Mark Shannon 21dd43c01d
Fix MSVC compiler warnings in dictobject.c (GH-26432) 2021-05-29 01:40:12 +01:00
Pablo Galindo 1a672a5908
bpo-44206: Fix compiler warnings in dictobject.c (GH-26440) 2021-05-29 00:14:33 +01:00
Mark Shannon f8a95df84b
bpo-44206: Add a version number to dictionary keys (GH-26333)
* Store log2(size) instead of size in dict-keys.

* Use enum instead of function pointer to record kind of keys.

* Add version number to dict keys.
2021-05-28 09:54:10 +01:00
Inada Naoki e0c614e5fd
bpo-44114: Remove redundant cast. (GH-26098) 2021-05-13 13:42:55 -07:00
Joe Marshall ab383eb6f0
bpo-44114: Fix dictkeys_reversed and dictvalues_reversed function signatures (GH-26062)
These are passed and called as PyCFunction, however they are defined here without the (ignored) args parameter.

This works fine in some C compilers, but fails in webassembly or anything else that has strict function pointer call type checking.
2021-05-13 10:54:17 +03:00
Mark Shannon 069e81ab3d
bpo-43977: Use tp_flags for collection matching (GH-25723)
* Add Py_TPFLAGS_SEQUENCE and Py_TPFLAGS_MAPPING, add to all relevant standard builtin classes.

* Set relevant flags on collections.abc.Sequence and Mapping.

* Use flags in MATCH_SEQUENCE and MATCH_MAPPING opcodes.

* Inherit Py_TPFLAGS_SEQUENCE and Py_TPFLAGS_MAPPING.

* Add NEWS

* Remove interpreter-state map_abc and seq_abc fields.
2021-04-30 09:50:28 +01:00
Hristo Venev 8557edbfa8
bpo-24275: Don't downgrade unicode-only dicts to mixed on lookups (GH-25186) 2021-04-29 11:06:03 +09:00
Victor Stinner ecf14e6557
bpo-43770: Refactor type_new() function (GH-25325)
* Split type_new() into into many small functions.
* Add type_new_ctx structure to pass variables between subfunctions.
* Initialize some PyTypeObject and PyHeapTypeObject members earlier
  in type_new_alloc().
* Rename variables to more specific names.
* Add "__weakref__" identifier for type_new_visit_slots().
* Factorize code to convert a method to a classmethod
  (__init_subclass__ and __class_getitem__).
* Add braces to respect PEP 7.
* Move variable declarations where the variables are initialized.
2021-04-10 23:15:32 +02:00
Brandt Bucher 145bf269df
bpo-42128: Structural Pattern Matching (PEP 634) (GH-22917)
Co-authored-by: Guido van Rossum <guido@python.org>
Co-authored-by: Talin <viridia@gmail.com>
Co-authored-by: Pablo Galindo <pablogsal@gmail.com>
2021-02-26 14:51:55 -08:00
Victor Stinner d5fc998737
bpo-42093: Cleanup _PyDict_GetItemHint() (GH-24582)
* No longer save/restore the current exception. It is no longer used
  with an exception raised.
* No longer clear the current exception on error: it's now up to the
  caller.
2021-02-21 12:02:04 +01:00
Pablo Galindo d439fb304c
bpo-43277: Add PySet_CheckExact to the C-API (GH-24598)
For some mysterious reason we have PySet_Check, PyFrozenSet_Check, PyAnySet_Check, PyAnySet_CheckExact and PyFrozenSet_CheckExact but no PySet_CheckExact.
2021-02-20 18:03:08 +00:00
Victor Stinner bcb094b41f
bpo-43268: Pass interp rather than tstate to internal functions (GH-24580)
Pass the current interpreter (interp) rather than the current Python
thread state (tstate) to internal functions which only use the
interpreter.

Modified functions:

* _PyXXX_Fini() and _PyXXX_ClearFreeList() functions
* _PyEval_SignalAsyncExc(), make_pending_calls()
* _PySys_GetObject(), sys_set_object(), sys_set_object_id(), sys_set_object_str()
* should_audit(), set_flags_from_config(), make_flags()
* _PyAtExit_Call()
* init_stdio_encoding()
* etc.
2021-02-19 15:10:45 +01:00
Brandt Bucher 226a012d1c
bpo-42536: GC track recycled tuples (GH-23623)
Several built-in and standard library types now ensure that their internal result tuples are always tracked by the garbage collector:

- collections.OrderedDict.items
- dict.items
- enumerate
- functools.reduce
- itertools.combinations
- itertools.combinations_with_replacement
- itertools.permutations
- itertools.product
- itertools.zip_longest
- zip

Previously, they could have become untracked by a prior garbage collection.
2020-12-04 19:45:57 -08:00
Victor Stinner 32bd68c839
bpo-42519: Replace PyObject_MALLOC() with PyObject_Malloc() (GH-23587)
No longer use deprecated aliases to functions:

* Replace PyObject_MALLOC() with PyObject_Malloc()
* Replace PyObject_REALLOC() with PyObject_Realloc()
* Replace PyObject_FREE() with PyObject_Free()
* Replace PyObject_Del() with PyObject_Free()
* Replace PyObject_DEL() with PyObject_Free()
2020-12-01 10:37:39 +01:00
Victor Stinner 00d7abd7ef
bpo-42519: Replace PyMem_MALLOC() with PyMem_Malloc() (GH-23586)
No longer use deprecated aliases to functions:

* Replace PyMem_MALLOC() with PyMem_Malloc()
* Replace PyMem_REALLOC() with PyMem_Realloc()
* Replace PyMem_FREE() with PyMem_Free()
* Replace PyMem_Del() with PyMem_Free()
* Replace PyMem_DEL() with PyMem_Free()

Modify also the PyMem_DEL() macro to use directly PyMem_Free().
2020-12-01 09:56:42 +01:00
Serhiy Storchaka b510e101f8
bpo-42152: Use PyDict_Contains and PyDict_SetDefault if appropriate. (GH-22986)
If PyDict_GetItemWithError is only used to check whether the key is in dict,
it is better to use PyDict_Contains instead.

And if it is used in combination with PyDict_SetItem, PyDict_SetDefault can
replace the combination.
2020-10-26 12:47:57 +02:00
Serhiy Storchaka fb5db7ec58
bpo-42006: Stop using PyDict_GetItem, PyDict_GetItemString and _PyDict_GetItemId. (GH-22648)
These functions are considered not safe because they suppress all internal errors
and can return wrong result.  PyDict_GetItemString and _PyDict_GetItemId can
also silence current exception in rare cases.

Remove no longer used _PyDict_GetItemId.
Add _PyDict_ContainsId and rename _PyDict_Contains into
_PyDict_Contains_KnownHash.
2020-10-26 08:43:39 +02:00
Pablo Galindo 492d513ccb
Correctly compare the hint against the keys in _PyDict_GetItemHint (GH-22960) 2020-10-25 06:08:17 +00:00
Pablo Galindo 109826c850
bpo-42093: Add opcode cache for LOAD_ATTR (GH-22803) 2020-10-20 06:22:44 +01:00
Inada Naoki d9323a8c6e
bpo-41493: Refactoring dictresize (GH-21751)
Split newsize calculation into new function. dictresize() now accepts exact newsize.
2020-08-07 14:08:55 +09:00