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cpython/Objects
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Eric Snow 2d26449b06
gh-94673: Always Finalize Static Builtin Types (#95153) 
Static builtin types are finalized by calling _PyStaticType_Dealloc().  Before this change, we were skipping finalizing such a type if it still had subtypes (i.e. its tp_subclasses hadn't been cleared yet).  The problem is that types hold several heap objects, which leak if we skip the type's finalization.  This change addresses that.

For context, there's an old comment (from e9e3eab0b8) that says the following:

   // If a type still has subtypes, it cannot be deallocated.
   // A subtype can inherit attributes and methods of its parent type,
   // and a type must no longer be used once it's deallocated.

However, it isn't clear that is actually still true.  Clearing tp_dict should mean it isn't a problem.

Furthermore, the only subtypes that might still be around come from extension modules that didn't clean them up when unloaded (i.e. extensions that do not implement multi-phase initialization, AKA PEP 489).  Those objects are already leaking, so this change doesn't change anything in that regard.  Instead, this change means more objects gets cleaned up that before.
2022-07-25 14:23:41 -06:00
..
clinic gh-91320: Argument Clinic uses _PyCFunction_CAST() (#32210) 2022-05-03 20:25:41 +02:00
stringlib gh-84461: Silence some compiler warnings on WASM (GH-93978) 2022-06-20 13:34:40 +02:00
abstract.c gh-93741: Add private C API _PyImport_GetModuleAttrString() (GH-93742) 2022-06-14 07:15:26 +03:00
accu.c
boolobject.c GH-90699: fix ref counting of static immortal strings (gh-94850) 2022-07-20 15:23:30 +09:00
bytearrayobject.c GH-91153: Handle mutating __index__ methods in bytearray item assignment (GH-94891) 2022-07-19 09:42:40 -07:00
bytes_methods.c gh-93033: Use wmemchr in stringlib (GH-93034) 2022-05-24 10:45:31 +09:00
bytesobject.c GH-93207: Remove HAVE_STDARG_PROTOTYPES configure check for stdarg.h (#93215) 2022-05-27 13:30:45 +02:00
call.c Update includes in call.c (GH-93786) 2022-06-15 13:24:12 +01:00
capsule.c bpo-45855: document that no_block has no use anymore in PyCapsule_Import (#29665) 2021-12-12 10:49:50 +01:00
cellobject.c gh-89653: PEP 670: Convert PyCell macros to functions (#92653) 2022-05-11 23:24:48 +02:00
classobject.c bpo-46764: Fix wrapping bound method with @classmethod (#31367) 2022-05-04 23:00:21 -05:00
codeobject.c GH-95113: Don't use EXTENDED_ARG_QUICK in unquickened code (GH-95121) 2022-07-22 11:04:20 -07:00
complexobject.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
descrobject.c gh-87995: Make MappingProxyType hashable (GH-94252) 2022-06-28 11:54:58 +02:00
dictnotes.txt bpo-46845: Reduce dict size when all keys are Unicode (GH-31564) 2022-03-02 08:09:28 +09:00
dictobject.c bpo-43857: Improve the AttributeError message when deleting a missing attribute (#25424) 2022-05-05 06:37:26 -07:00
enumobject.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
exception_handling_notes.txt bpo-44525: Split calls into PRECALL and CALL (GH-30011) 2021-12-14 18:22:44 +00:00
exceptions.c gh-94673: Add _PyStaticType_InitBuiltin() (#95152) 2022-07-25 12:47:31 -06:00
fileobject.c gh-93741: Add private C API _PyImport_GetModuleAttrString() (GH-93742) 2022-06-14 07:15:26 +03:00
floatobject.c gh-94673: Add _PyStaticType_InitBuiltin() (#95152) 2022-07-25 12:47:31 -06:00
frame_layout.md GH-89480: Document motivation, design and implementation of 3.11 frame stack. (GH-32304) 2022-04-11 16:05:20 +01:00
frameobject.c GH-94438: Handle extended arguments and conditional pops in mark_stacks (GH-95110) 2022-07-22 16:28:03 -07:00
funcobject.c Fix the closure argument to PyEval_EvalCodeEx. (GH-92175) 2022-05-02 14:08:22 -06:00
genericaliasobject.c gh-94607: Fix subclassing generics (GH-94610) 2022-07-09 12:18:01 +08:00
genobject.c GH-90230: Add stats to breakdown the origin of calls to PyEval_EvalFrame (GH-93284) 2022-05-27 16:31:41 +01:00
interpreteridobject.c bpo-35081: Move interpreteridobject.h to Include/internal/ (GH-28969) 2021-10-15 11:56:34 +02:00
iterobject.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
listobject.c gh-95173: Revert commit 51ed2c56a1 (#95176) 2022-07-24 22:33:06 +01:00
listsort.txt Fix typos in the Objects directory (GH-28766) 2021-10-06 16:57:10 -07:00
lnotab_notes.txt bpo-44525: Split calls into PRECALL and CALL (GH-30011) 2021-12-14 18:22:44 +00:00
locations.md GH-88116: Use a compact format to represent end line and column offsets. (GH-91666) 2022-04-21 16:10:37 +01:00
longobject.c gh-94673: Add _PyStaticType_InitBuiltin() (#95152) 2022-07-25 12:47:31 -06:00
memoryobject.c gh-92888: Fix memoryview bad __index__ use after free (GH-92946) 2022-06-17 23:14:53 +08:00
methodobject.c Use static inline function Py_EnterRecursiveCall() (#91988) 2022-05-04 13:30:23 +02:00
moduleobject.c no-issue: Add assertion to PyModule_GetName for understanding (GH-32236) 2022-04-02 09:56:30 +09:00
namespaceobject.c bpo-45482: Rename namespaceobject.h to pycore_namespace.h (GH-28975) 2021-10-15 15:21:21 +02:00
object.c gh-94673: Add _PyStaticType_InitBuiltin() (#95152) 2022-07-25 12:47:31 -06:00
obmalloc.c gh-94841: Ensure arena_map_get() is inlined in PyObject_Free() (#94842) 2022-07-14 11:33:25 -07:00
odictobject.c gh-91320: Use _PyCFunction_CAST() (#92251) 2022-05-03 21:42:14 +02:00
picklebufobject.c gh-91118: Fix docstrings that do not honor --without-doc-strings (#31769) 2022-04-17 20:39:32 -07:00
rangeobject.c GH-91432: Specialize FOR_ITER (GH-91713) 2022-06-21 11:19:26 +01:00
README
setobject.c gh-90861: Memory optimization for set.issubset (gh-92799) 2022-05-14 17:58:19 +09:00
sliceobject.c GH-94163: Add BINARY_SLICE and STORE_SLICE instructions. (GH-94168) 2022-06-27 12:24:23 +01:00
structseq.c gh-94673: Add _PyStaticType_InitBuiltin() (#95152) 2022-07-25 12:47:31 -06:00
tupleobject.c Add more stats for freelist use and allocations. (GH-92211) 2022-05-03 16:40:24 -06:00
typeobject.c gh-94673: Always Finalize Static Builtin Types (#95153) 2022-07-25 14:23:41 -06:00
typeslots.inc bpo-41073: PyType_GetSlot() can now accept static types. (GH-21931) 2020-11-10 12:53:46 -08:00
typeslots.py bpo-41073: PyType_GetSlot() can now accept static types. (GH-21931) 2020-11-10 12:53:46 -08:00
unicodectype.c bpo-46670: Remove unused macros in the Objects directory (GH-31193) 2022-02-07 16:21:41 +01:00
unicodeobject.c gh-94673: Add _PyStaticType_InitBuiltin() (#95152) 2022-07-25 12:47:31 -06:00
unicodetype_db.h closes bpo-45190: Update Unicode data to version 14.0.0. (GH-28336) 2021-09-14 11:00:38 -07:00
unionobject.c gh-91603: Speed up isinstance/issubclass on union types (GH-91631) 2022-04-28 23:24:19 +08:00
weakrefobject.c gh-79512: Fixed names and __module__ value of weakref classes (GH-93719) 2022-06-14 07:18:03 +03:00

README 

Source files for various builtin objects