Description

assignee = None
closed_at = None
created_at = <Date 2020-07-01.17:43:02.332>
labels = ['interpreter-core', 'expert-C-API', 'type-feature', '3.10']
title = 'Prepare CPython for opaque PyObject structure.'
updated_at = <Date 2020-07-07.19:55:22.137>
user = 'https://github.com/WildCard65'

activity = <Date 2020-07-07.19:55:22.137>
actor = 'ronaldoussoren'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Interpreter Core', 'C API']
creation = <Date 2020-07-01.17:43:02.332>
creator = 'WildCard65'
dependencies = []
files = []
hgrepos = []
issue_num = 41188
keywords = ['patch']
message_count = 1.0
messages = ['372775']
nosy_count = 3.0
nosy_names = ['ronaldoussoren', 'vstinner', 'WildCard65']
pr_nums = ['21262']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue41188'
versions = ['Python 3.10']

Activity

1. WildCard65 commented on Jul 1, 2020

   

   WildCard65mannequin

   on Jul 1, 2020

   MannequinAuthor

   More actions

   The goal of bpo-39573 is to make "PyObject" and opaque structure in the limited API.

   To do that, a few mandatory changes will be required to CPython in order to allow for seamless implementation.

   Namely:

   1. User types need to get away from directly referencing PyObject.

      • This can be done by adding a new variable to "PyTypeObject" who's value is an offset into the object's pointer to the type's internal structure.
        -- Example: 'PyType_Type.tp_obj_offset' would be the value of "sizeof(PyVarObject)".
        -- For custom types with another base: The value would be calculated from the base's "tp_obj_offset" + "tp_basicsize"

   2. Create a linkable static library to facility method calls requiring internal implementation.

      • This static library will be implementation defined, IE: using internal methods specific to the runtime that created it.
      • Public facing methods will use generic names for example, "PyObject_GetType" will get the object's ob_type (or whatever the target runtime calls it).
2. WildCard65

   added

   3.10 (EOL)end of lifeend of life

   interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

   topic-C-API

   type-featureA feature request or enhancementA feature request or enhancement

   on Jul 1, 2020
3. ezio-melotti

   transferred this issue fromon Apr 10, 2022
4. iritkatriel commented on Jun 25, 2022

   

   iritkatriel

   on Jun 25, 2022

   Member

   More actions

   The PR was closed by the OP after a core dev requested changes. So I am assuming the project was abandoned and closing the issue as well.
5. iritkatriel

   closed this as not plannedon Jun 25, 2022

Issue actions