Add threading.gettrace and threading.getprofile

[mariocj89]

BPO	42251
Nosy	@mariocj89, @pablogsal
PRs	#23125

^{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:

assignee = None
closed_at = <Date 2020-11-04.09:27:57.394>
created_at = <Date 2020-11-03.13:15:23.623>
labels = ['library', '3.10']
title = 'Add threading.gettrace and threading.getprofile'
updated_at = <Date 2020-11-04.09:28:10.989>
user = 'https://github.com/mariocj89'

bugs.python.org fields:

activity = <Date 2020-11-04.09:28:10.989>
actor = 'pablogsal'
assignee = 'none'
closed = True
closed_date = <Date 2020-11-04.09:27:57.394>
closer = 'pablogsal'
components = ['Library (Lib)']
creation = <Date 2020-11-03.13:15:23.623>
creator = 'mariocj89'
dependencies = []
files = []
hgrepos = []
issue_num = 42251
keywords = ['patch']
message_count = 2.0
messages = ['380273', '380312']
nosy_count = 2.0
nosy_names = ['mariocj89', 'pablogsal']
pr_nums = ['23125']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue42251'
versions = ['Python 3.10']

[mariocj89]

When working in a C extension from a non-python created thread which calls PyGILState_Ensure as it later calls a Python callback on user code, I wished there was a way to set the trace function similar to what a native Python thread would do.

We could just call sys.gettrace within the thread, but the application might have chosen to set threading.settrace differently.

Same applies for threading.setprofile.

[pablogsal]

New changeset 0001a1b by Mario Corchero in branch 'master':
bpo-42251: Add gettrace and getprofile to threading (GH-23125)
0001a1b