ba9228e2-9454-44a8-98af-f771e548a6cc
commented
4 years ago To me it seems like Advanced Debugger Support C-API doesn't make sense without HEAD_LOCK() and HEAD_UNLOCK() which are private right now.
When researching how C-API works I've found this comment in the source code: https://github.com/python/cpython/blob/e838a9324c1719bb917ca81ede8d766b5cb551f4/Python/pystate.c#L1176
It says that the lists of interpreter-state and thread-state objects (that Adv. Debugger Support API operates on) could be mutated even when GIL is held so there is need to acquire head mutex when accessing them. But there is no way to acquire head mutex using public C-API.
Am I right? If yes - it seems like HEAD_(UN)LOCK() should be made public.
Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
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GitHub fields: ```python assignee = None closed_at = None created_at =
labels = ['expert-C-API', 'type-feature', '3.11']
title = 'Advanced Debugger Support C-API is useless without HEAD_LOCK()/HEAD_UNLOCK()'
updated_at =
user = 'https://github.com/AndreiPashkin'
```
bugs.python.org fields:
```python
activity =
actor = 'iritkatriel'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['C API']
creation =
creator = 'pashkin'
dependencies = []
files = []
hgrepos = []
issue_num = 41062
keywords = []
message_count = 2.0
messages = ['371988', '371989']
nosy_count = 2.0
nosy_names = ['vstinner', 'pashkin']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue41062'
versions = ['Python 3.11']
```