We replace _PyRuntime.tstate_current with a thread-local variable. As part of this change, we add a _Py_thread_local macro in pyport.h (only for the core runtime) to smooth out the compiler differences. The main motivation here is in support of a per-interpreter GIL, but this change also provides some performance improvement opportunities.
Note that we do not provide a fallback to the thread-local, either falling back to the old tstate_current or to thread-specific storage (PyThread_tss_*()). If that proves problematic then we can circle back. I consider it unlikely, but will run the buildbots to double-check.
Also note that this does not change any of the code related to the GILState API, where it uses a thread state stored in thread-specific storage. I suspect we can combine that with _Py_tss_tstate (from here). However, that can be addressed separately and is not urgent (nor critical).
(While this change was mostly done independently, I did take some inspiration from earlier (~2020) work by @markshannon (main...markshannon:threadstate_in_tls) and @vstinner (#23976).)
The word 'dependent' is both an adjective and a noun. A 'dependant' is a British alternative spelling for the noun form. In idlelib.sidebar, 'OS-dependant' is an adjective and clearly wrong. In 'Using', 'dependant' as a noun would be acceptable in Britain, but we use American spellings in Python docs.
https://www.merriam-webster.com/words-at-play/spelling-variants-dependent-vs-dependant
bpo-37222: Fix for CacheFTPHandler in urllib
A call to FTP.ntransfercmd must be followed by FTP.voidresp to clear
the "end transfer" message. Without this, the client and server get
out of sync, which will result in an error if the FTP instance is
reused to open a second URL. This scenario occurs for even the most
basic usage of CacheFTPHandler.
Reverts the patch merged as a resolution to bpo-16270 and adds a test
case for the CacheFTPHandler in test_urllib2net.py.
Co-authored-by: Senthil Kumaran <senthil@python.org>
This is the implementation of PEP683
Motivation:
The PR introduces the ability to immortalize instances in CPython which bypasses reference counting. Tagging objects as immortal allows up to skip certain operations when we know that the object will be around for the entire execution of the runtime.
Note that this by itself will bring a performance regression to the runtime due to the extra reference count checks. However, this brings the ability of having truly immutable objects that are useful in other contexts such as immutable data sharing between sub-interpreters.
* Doc: Fix broken links reported by linkcheck
* Apply suggestions from code review
- Remove extra diff line in faq/library.rst (merwok)
- Use HTTPS to link Unicode 15.0.0 to solve a redirect (hugovk)
- Use wayback machine link for openssl 1.1.0 instead of linking 1.1.1, "as this text mentions a feature from 1.1.0" (hugovk)
Co-authored-by: Éric <merwok@netwok.org>
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
* Doc: Make mark-up code as literal
* Doc: Alphabetize items in linkcheck_ignore
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
* Doc: Improve comment in sphinx conf
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
---------
Co-authored-by: Éric <merwok@netwok.org>
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
* bugfix: let the HTTP- and HTTPSHandlers respect the value of http.client.HTTPConnection.debuglevel
* add tests
* add news
* ReSTify NEWS and reword a bit.
* Address Review Comments.
* Use mock.patch.object instead of settting the module level value.
* Used test values to assert the debuglevel.
---------
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Co-authored-by: Senthil Kumaran <senthil@python.org>
I recently added some tests to test_imp, but @warsaw is removing that file in gh-98573. The tests are worth keeping so here I'm moving them to test_import.
Oleg Iarygin
Furkan Onder
Eric Snow
Allan Lago
Nikita Sobolev
Jaime Alonso Lorenzo
Joshua Herman
Richard Hajek
Miro Hrončok
Brett Simmers
Kirill
Alex Gaynor
Stanley
Christopher Chavez
Petr Viktorin
Tian Gao
Ankit Kumar Pandey
Senthil Kumaran
James Hilton-Balfe
Lysandros Nikolaou
Dong-hee Na
Adrian Garcia Badaracco
Dan Hemberger
Randy
Hugo van Kemenade
Eddie Elizondo
Jason R. Coombs
Eric Wieser
Rafael Fontenelle
Raymond Hettinger
Paul Moore
Wheeler Law
Adrien
Alexander Belopolsky
Pablo Galindo Salgado