Function monarch_with_gil_blocking 

pub fn monarch_with_gil_blocking<F, R>(site: GilSite, f: F) -> R
where
    F: for<'py> FnOnce(Python<'py>) -> R,

Blocking wrapper around Python::with_gil for use in synchronous contexts.

Unlike monarch_with_gil, this function does NOT use the GIL_LOCK async mutex. Since it is blocking call, it simply acquires the GIL and releases it when the closure returns.

Note: like monarch_with_gil, the control-plane GIL accounting (check_gil_site) covers only acquisitions that route through these wrappers; a raw Python::attach elsewhere bypasses it.

Example

let result = monarch_with_gil_blocking(GilSite::Convert, |py| {
    // Do work with Python GIL
    Ok(42)
})?;