Struct wayland_commons::user_data::UserData[−][src]

pub struct UserData { /* fields omitted */ }

A wrapper for user data, able to store any type, and correctly handling access from a wrong thread

Implementations

impl UserData[src]

pub const fn new() -> UserData[src]

Create a new UserData instance

pub fn set<T: Any + 'static, F: FnOnce() -> T>(&self, f: F)[src]

Sets the UserData to a given value

The provided closure is called to init the UserData, does nothing is the UserData had already been set.

pub fn set_threadsafe<T: Any + Send + Sync + 'static, F: FnOnce() -> T>(
    &self,
    f: F
)[src]

Sets the UserData to a given threadsafe value

The provided closure is called to init the UserData, does nothing is the UserData had already been set.

pub fn get<T: 'static>(&self) -> Option<&T>[src]

Attempt to access the wrapped user data

Will return None if either:

  • The requested type T does not match the type used for construction
  • This UserData has been created using the non-threadsafe variant and access is attempted from an other thread than the one it was created on

Trait Implementations

impl Drop for UserData[src]

impl Send for UserData[src]

impl Sync for UserData[src]

Auto Trait Implementations

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, [src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.