Trait EventToken

pub trait EventToken {
    // Required methods
    fn as_raw_token(&self) -> u64;
    fn from_raw_token(data: u64) -> Self;
}

Trait that can be used to associate events with arbitrary enums when using WaitContext.

Simple enums that have no or primitive variant data data can use the #[derive(EventToken)] custom derive to implement this trait. See event_token_derive::event_token for details.

Required Methods

fn as_raw_token(&self) -> u64

Converts this token into a u64 that can be turned back into a token via from_raw_token.

fn from_raw_token(data: u64) -> Self

Converts a raw token as returned from as_raw_token back into a token.

It is invalid to give a raw token that was not returned via as_raw_token from the same Self. The implementation can expect that this will never happen as a result of its usage in WaitContext.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl EventToken for u8

fn as_raw_token(&self) -> u64

fn from_raw_token(data: u64) -> Self

impl EventToken for u16

fn as_raw_token(&self) -> u64

fn from_raw_token(data: u64) -> Self

impl EventToken for u32

fn as_raw_token(&self) -> u64

fn from_raw_token(data: u64) -> Self

impl EventToken for u64

fn as_raw_token(&self) -> u64

fn from_raw_token(data: u64) -> Self

impl EventToken for ()

fn as_raw_token(&self) -> u64

fn from_raw_token(_data: u64) -> Self

impl EventToken for usize

fn as_raw_token(&self) -> u64

fn from_raw_token(data: u64) -> Self

Implementors

impl EventToken for Descriptor

Implement token for implementations that wish to use this struct as such