Sam Gross [Mon, 29 Apr 2024 18:36:02 +0000 (14:36 -0400)]
gh-117783: Immortalize objects that use deferred reference counting (#118112)
Deferred reference counting is not fully implemented yet. As a temporary
measure, we immortalize objects that would use deferred reference
counting to avoid multi-threaded scaling bottlenecks.
This is only performed in the free-threaded build once the first
non-main thread is started. Additionally, some tests, including refleak
tests, suppress this behavior.
gh-118331: Don't raise an error if tuple allocation fails when clearing weakrefs (#118338)
It's not safe to raise an exception in `PyObject_ClearWeakRefs()` if one
is not already set, since it may be called by `_Py_Dealloc()`, which
requires that the active exception does not change.
Additionally, make sure we clear the weakrefs even when tuple allocation
fails.
gh-118285: Fix signatures of operator.{attrgetter,itemgetter,methodcaller} instances (GH-118316)
* Allow to specify the signature of custom callable instances of extension
type by the __text_signature__ attribute.
* Specify signatures of operator.attrgetter, operator.itemgetter, and
operator.methodcaller instances.
Eric Snow [Mon, 29 Apr 2024 15:29:07 +0000 (09:29 -0600)]
gh-117953: Split Up _PyImport_LoadDynamicModuleWithSpec() (gh-118203)
Basically, I've turned most of _PyImport_LoadDynamicModuleWithSpec() into two new functions (_PyImport_GetModInitFunc() and _PyImport_RunModInitFunc()) and moved the rest of it out into _imp_create_dynamic_impl(). There shouldn't be any changes in behavior.
This change makes some future changes simpler. This is particularly relevant to potentially calling each module init function in the main interpreter first. Thus the critical part of the PR is the addition of _PyImport_RunModInitFunc(), which is strictly focused on running the init func and validating the result. A later PR will take it a step farther by capturing error information rather than raising exceptions.
FWIW, this change also helps readers by clarifying a bit more about what happens when an extension/builtin module is imported.
Eric Snow [Sat, 27 Apr 2024 01:13:44 +0000 (19:13 -0600)]
gh-110693: Use a Larger Queue for Per-Interpreter Pending Calls (gh-118302)
This is an improvement over the status quo, reducing the likelihood of completely filling the pending calls queue. However, the problem won't go away completely unless we move to an unbounded linked list or add a mechanism for waiting until the queue isn't full.
gh-117566: fix IPv6Address.is_loopback for IPv4-mapped loopbacks (GH-117567)
While properties like IPv6Address.is_private account for IPv4-mapped
IPv6 addresses, such as for example:
>>> ipaddress.ip_address("192.168.0.1").is_private
True
>>> ipaddress.ip_address("::ffff:192.168.0.1").is_private
True
...the same doesn't currently apply to the is_loopback property:
>>> ipaddress.ip_address("127.0.0.1").is_loopback
True
>>> ipaddress.ip_address("::ffff:127.0.0.1").is_loopback
False
At minimum, this inconsistency between different properties is
counter-intuitive. Moreover, ::ffff:127.0.0.0/104 is for all intents and
purposes a loopback address, and should be treated as such.
gh-118221: Always use the default row factory in sqlite3.iterdump() (#118223)
sqlite3.iterdump() depends on the row factory returning resulting rows
as tuples; it will fail with custom row factories like for example a
dict factory.
With this commit, we explicitly reset the row factory of the cursor used
by iterdump(), so we always get predictable results. This does not
affect the row factory of the parent connection.
gh-117968: Make the test for closed file more safe in the C API tests (GH-118230)
The behavior of fileno() after fclose() is undefined, but it is the only
practical way to check whether the file was closed.
Only test this on the known platforms (Linux, Windows, macOS), where we
already tested that it works.
Eric Snow [Wed, 24 Apr 2024 15:55:48 +0000 (09:55 -0600)]
gh-117953: Cleanups For fix_up_extension() in import.c (gh-118192)
These are cleanups I've pulled out of gh-118116. Mostly, this change moves code around to align with some future changes and to improve clarity a little. There is one very small change in behavior: we now add the module to the per-interpreter caches after updating the global state, rather than before.
gh-117151: optimize BufferedWriter(), do not buffer writes that are the buffer size (GH-118037)
BufferedWriter() was buffering calls that are the exact same size as the buffer. it's a very common case to read/write in blocks of the exact buffer size.
it's pointless to copy a full buffer, it's costing extra memory copy and the full buffer will have to be written in the next call anyway.
Eric Snow [Tue, 23 Apr 2024 14:25:50 +0000 (08:25 -0600)]
gh-117953: Small Cleanup of Extensions-Related Machinery Code (gh-118167)
This is a collection of very basic cleanups I've pulled out of gh-118116. It is mostly renaming variables and moving a couple bits of code in functionally equivalent ways.
bpo-18108: Adding dir_fd and follow_symlinks keyword args to shutil.chown (GH-15811)
* Adding dir_fd and follow_symlinks keyword args to shutil.chown
* Extending test_shutil.TestShutil.test_chown to include new kwargs
* Updating shutil.chown documentation
gh-115961: Add name and mode attributes for compressed file-like objects (GH-116036)
* Add name and mode attributes for compressed and archived file-like objects
in modules bz2, lzma, tarfile and zipfile.
* Change the value of the mode attribute of GzipFile from integer (1 or 2)
to string ('rb' or 'wb').
* Change the value of the mode attribute of ZipExtFile from 'r' to 'rb'.