Function get_or_insert_shared

src/borrow/shared.rs:108–114

(py: Python<'py>)

static SHARED: SharedPtr = SharedPtr(PyOnceLock::new());

fn get_or_insert_shared<'py>(py: Python<'py>) -> PyResult<&'py Shared> {
    let shared = SHARED.0.get_or_try_init(py, || insert_shared(py))?;

    // SAFETY: We inserted the capsule if it was missing
    // and verified that it contains a compatible version.
    Ok(unsafe { shared.as_ref() })
}

// This function will publish this extension's version of the shared borrow checking API
// as a capsule placed at `numpy.core.multiarray._RUST_NUMPY_BORROW_CHECKING_API` and