Method hash

crates/vm/src/builtins/weakref.rs:95–116

(zelf: &Py<Self>, vm: &VirtualMachine)

impl Hashable for PyWeak {
    fn hash(zelf: &Py<Self>, vm: &VirtualMachine) -> PyResult<PyHash> {
        let hash = match zelf.hash.load(Ordering::Relaxed) {
            hash::SENTINEL => {
                let obj = zelf
                    .upgrade()
                    .ok_or_else(|| vm.new_type_error("weak object has gone away"))?;
                let hash = obj.hash(vm)?;
                match Radium::compare_exchange(
                    &zelf.hash,
                    hash::SENTINEL,
                    hash::fix_sentinel(hash),
                    Ordering::Relaxed,
                    Ordering::Relaxed,
                ) {
                    Ok(_) => hash,
                    Err(prev_stored) => prev_stored,
                }
            }
            hash => hash,
        };
        Ok(hash)
    }
}

impl Comparable for PyWeak {