gh-104372: Drop the GIL around the vfork() call. (GH-104782)
On Linux where the `subprocess` module can use the `vfork` syscall for
faster spawning, prevent the parent process from blocking other threads
by dropping the GIL while it waits for the vfork'ed child process `exec`
outcome. This prevents spawning a binary from a slow filesystem from
blocking the rest of the application.
Fixes GH-104372.
(cherry picked from commit d08679212d)
Co-authored-by: Gregory P. Smith <gps@python.org>
gh-99108: Refresh HACL* (GH-104808)
Refresh HACL* from upstream to improve SHA2 performance and fix a 32-bit issue in SHA3.
(cherry picked from commit 160321e530)
Co-authored-by: Jonathan Protzenko <protz@microsoft.com>
gh-104372: use == -1 before PyErr_Occurred (GH-104831)
The ideal pattern for this. (already in the 3.11 backport)
(cherry picked from commit 7f963bfc79)
Co-authored-by: Gregory P. Smith <greg@krypto.org>
gh-103295: fix stack overwrite on 32-bit in perf map test harness (GH-104811)
(cherry picked from commit e0b3078705)
Co-authored-by: Carl Meyer <carl@oddbird.net>
gh-99108: Release the GIL around hashlib built-in computation (GH-104675)
This matches the GIL releasing behavior of our existing `_hashopenssl`
module, extending it to the HACL* built-ins.
Includes adding comments to better describe the ENTER/LEAVE macros
purpose and explain the lock strategy in both existing and new code.
(cherry picked from commit 2e5d8a90aa)
Co-authored-by: Gregory P. Smith [Google] <greg@krypto.org>
* Support for conversion specifiers o (octal) and X (uppercase hexadecimal).
* Support for length modifiers j (intmax_t) and t (ptrdiff_t).
* Length modifiers are now applied to all integer conversions.
* Support for wchar_t C strings (%ls and %lV).
* Support for variable width and precision (*).
* Support for flag - (left alignment).
This PR updates `math.nextafter` to add a new `steps` argument. The behaviour is as though `math.nextafter` had been called `steps` times in succession.
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Co-authored-by: Mark Dickinson <mdickinson@enthought.com>
This adds a number of PRIO_DARWIN_* constants to the os module for use with os.setpriority.
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Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Move all of the Python C API calls into the parent process up front
instead of doing PyLong_AsLong and PyErr_Occurred and PyTuple_GET from
the post-fork/vfork child process.
Much of this was long overdue. We shouldn't have been using PyTuple and
PyLong APIs within all of these low level functions anyways.
This implements PEP 695, Type Parameter Syntax. It adds support for:
- Generic functions (def func[T](): ...)
- Generic classes (class X[T](): ...)
- Type aliases (type X = ...)
- New scoping when the new syntax is used within a class body
- Compiler and interpreter changes to support the new syntax and scoping rules
Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
Co-authored-by: Eric Traut <eric@traut.com>
Co-authored-by: Larry Hastings <larry@hastings.org>
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
When preparing the _io extension module for isolation, many methods were
adapted to Argument Clinic. Some of these used the '*args: object'
signature, which is incorrect. These are now corrected to an exact
signature, and marked unused, since they are stub methods.
