Enum UserData

pub enum UserData<T: Sized> {
    C(Arc<CPtr>),
    Rust(Arc<Mutex<T>>),
}

UserData is used to store additional data that gets passed into host function callbacks

UserData is used to store C and Rust data from hosts. The Rust data in wrapped in an Arc<Mutex<T>> and can be accessed using UserData::get. The C data is stored as a pointer and cleanup function and isn’t usable from Rust. The cleanup function will be called when the inner CPtr is dropped.

Variants

C(Arc<CPtr>)

Rust(Arc<Mutex<T>>)

Implementations

impl<T> UserData<T>

pub fn new(x: T) -> Self

Create a new UserData from a Rust value

This will wrap the provided value in a reference-counted mutex

pub fn get(&self) -> Result<Arc<Mutex<T>>, Error>

Get a copy of the inner value

Trait Implementations

impl<T> Clone for UserData<T>

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug + Sized> Debug for UserData<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: Default> Default for UserData<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T> Send for UserData<T>

impl<T> Sync for UserData<T>