Struct SessionSlab 

pub struct SessionSlab<T> { /* private fields */ }

Generational slab of sessions.

Implementations

impl<T> SessionSlab<T>

pub fn new(capacity: usize) -> Result<Self, SlabError>

Pre-allocates capacity slots (no T constructed yet).

Errors

SlabError::Capacity when capacity is 0 or exceeds MAX_SLOTS.

pub fn insert(&mut self, value: T) -> Result<(u32, u16), SlabError>

Inserts a value, returning (slot, generation).

Errors

SlabError::Exhausted when every slot is live.

pub fn remove(&mut self, slot: u32) -> Option<T>

Removes a value. The slot’s generation increments immediately so any in-flight token for the old generation becomes stale on reuse.

pub fn get(&self, slot: u32) -> Option<&T>

Immutable access.

pub fn get_mut(&mut self, slot: u32) -> Option<&mut T>

Mutable access.

pub fn generation(&self, slot: u32) -> u16

Generation currently assigned to a slot.

pub fn len(&self) -> usize

Number of live sessions.

pub fn is_empty(&self) -> bool

true when no sessions are live.

pub fn matches(&self, slot: u32, generation: u16) -> bool

True when the slot is live with the given generation (token check).

pub fn live(&self) -> Vec<(u32, u16)>

Iterates all live (slot, generation) pairs.

Trait Implementations

impl<T> GenerationBump<T> for SessionSlab<T>

fn bump_generation(&mut self, slot: u32)

Increments the slot generation, invalidating stale tokens.