Struct HandlerTable

pub struct HandlerTable<const N: usize> { /* private fields */ }

A lock-free table of event handlers.

It internally uses an array of AtomicUsize to store the handlers.

Implementations

impl<const N: usize> HandlerTable<N>

pub const fn new() -> HandlerTable<N>

Creates a new handler table with all entries empty.

pub fn register_handler(&self, idx: usize, handler: fn()) -> bool

Registers a handler for the given index.

Returns true if the registration succeeds, false if the index is out of bounds or the handler is already registered.

pub fn unregister_handler(&self, idx: usize) -> Option<fn()>

Unregisters the handler for the given index.

Returns the existing handler if it is registered, None otherwise.

pub fn handle(&self, idx: usize) -> bool

Handles the event with the given index.

Returns true if the event is handled, false if no handler is registered for the given index.

Trait Implementations

impl<const N: usize> Default for HandlerTable<N>

fn default() -> HandlerTable<N>

Returns the “default value” for a type.