support 3.13t free-threaded python (#471)

* support 3.13t free-threaded python

* make dynamic borrow-checking threadsafe

* fix compiler error in benches target

* fix warning on nightly rust about extern usage

* remove parking_lot dependency

* Add deadlock-avoidance using direct FFI calls

* refactor BorrowFlags tests to not hold a lock in the tests

* fix clippy

* give BorrowFlagsState fields descriptive names

* move thread state guard into the crate root

* use ThreadStateGuard to avoid deadlocks acquiring the dtype cache

---------

Co-authored-by: Icxolu <10486322+Icxolu@users.noreply.github.com>
Co-authored-by: Nathan Goldbaum <nathan.goldbaum@gmail.com>

Author: 3 people

.github/workflows/ci.yml

@@ -39,6 +39,7 @@ jobs:
             "3.11",
             "3.12",
             "3.13",
+            "3.13t",
             "pypy-3.9",
             "pypy-3.10",
           ]
@@ -108,7 +109,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: Quansight-Labs/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
           architecture: ${{ matrix.platform.python-architecture }}

CHANGELOG.md

@@ -1,4 +1,7 @@
 # Changelog
+- v0.24.0
+  - Support Python 3.13t "free-threaded" Python. ([#471](https://github.com/PyO3/rust-numpy/pull/471)
+
 - v0.23.0
   - Drop support for PyPy 3.7 and 3.8. ([#470](https://github.com/PyO3/rust-numpy/pull/470))
   - Require `Element: Sync` as part of the free-threading support in PyO3 0.23 ([#469](https://github.com/PyO3/rust-numpy/pull/469))

Cargo.toml

@@ -22,12 +22,15 @@ num-complex = ">= 0.2, < 0.5"
 num-integer = "0.1"
 num-traits = "0.2"
 ndarray = ">= 0.15, < 0.17"
-pyo3 = { version = "0.23.3", default-features = false, features = ["macros"] }
+pyo3 = { version = "0.23.4", default-features = false, features = ["macros"] }
 rustc-hash = "2.0"
 
 [dev-dependencies]
 pyo3 = { version = "0.23.3", default-features = false, features = ["auto-initialize"] }
 nalgebra = { version = ">=0.30, <0.34", default-features = false, features = ["std"] }
 
+[build-dependencies]
+pyo3-build-config = { version = "0.23.1", features = ["resolve-config"] }
+
 [package.metadata.docs.rs]
 all-features = true

benches/array.rs

@@ -6,7 +6,7 @@ use test::{black_box, Bencher};
 use std::ops::Range;
 
 use numpy::{PyArray1, PyArray2, PyArray3};
-use pyo3::{types::PyAnyMethods, Bound, Python};
+use pyo3::{types::PyAnyMethods, Bound, IntoPyObjectExt, Python};
 
 #[bench]
 fn extract_success(bencher: &mut Bencher) {
@@ -115,7 +115,11 @@ fn from_slice_large(bencher: &mut Bencher) {
 }
 
 fn from_object_slice(bencher: &mut Bencher, size: usize) {
-    let vec = Python::with_gil(|py| (0..size).map(|val| val.to_object(py)).collect::<Vec<_>>());
+    let vec = Python::with_gil(|py| {
+        (0..size)
+            .map(|val| val.into_py_any(py).unwrap())
+            .collect::<Vec<_>>()
+    });
 
     Python::with_gil(|py| {
         bencher.iter(|| {

build.rs

@@ -0,0 +1,3 @@
+fn main() {
+    pyo3_build_config::use_pyo3_cfgs();
+}