Function with_context

flow-rs/src/loader/python/context.rs:20–29

(py: Python, f: F)

}

pub fn with_context<F, R>(py: Python, f: F) -> R
where
    F: FnOnce() -> R + Send,
    R: Send,
{
    let id = CTX.with(|ctx| ctx.borrow_mut().store());
    let r = py.allow_threads(f);
    CTX.with(|ctx| ctx.borrow_mut().restore(id));
    r
}

struct Context {
    thread: *mut ffi::PyThreadState,