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gh-81057: Move the Extension Modules Cache to _PyRuntimeState (gh-99355)

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We also move the closely related max_module_number and add comments documenting the group of struct members.

https://github.com/python/cpython/issues/81057
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Eric Snow 2022-11-11 14:16:28 -07:00 • committed by GitHub
parent fe55ff3f68
commit dd36b71fa6
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7 changed files with 104 additions and 33 deletions
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14
Include/moduleobject.h
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@ -43,8 +43,22 @@ PyAPI_DATA(PyTypeObject) PyModuleDef_Type;
typedef struct PyModuleDef_Base {
PyObject_HEAD
/* The function used to re-initialize the module.
This is only set for legacy (single-phase init) extension modules
and only used for those that support multiple initializations
(m_size >= 0).
It is set by _PyImport_LoadDynamicModuleWithSpec()
and _imp.create_builtin(). */
PyObject* (*m_init)(void);
/* The module's index into its interpreter's modules_by_index cache.
This is set for all extension modules but only used for legacy ones.
(See PyInterpreterState.modules_by_index for more info.)
It is set by PyModuleDef_Init(). */
Py_ssize_t m_index;
/* A copy of the module's __dict__ after the first time it was loaded.
This is only set/used for legacy modules that do not support
multiple initializations.
It is set by _PyImport_FixupExtensionObject(). */
PyObject* m_copy;
} PyModuleDef_Base;