Struct FenceGuard 

pub struct FenceGuard { /* private fields */ }

A stateful epoch checker that rejects operations with stale epochs.

Holds the “current” epoch and provides check() / advance() methods. Typical use: place a FenceGuard in front of a resource and call check() on every incoming operation’s epoch before allowing it through.

Implementations

impl FenceGuard

pub fn new(expected: FenceEpoch) -> Self

Create a guard expecting the given epoch.

pub fn check(&self, incoming: FenceEpoch) -> Result<(), StaleEpochError>

Check that incoming is not stale. Returns Ok(()) if incoming is equal to or newer than the expected epoch. Returns Err(StaleEpochError) if incoming is behind.

pub fn advance(&mut self) -> FenceEpoch

Bump the expected epoch by one and return the new epoch.

Trait Implementations

impl Clone for FenceGuard

fn clone(&self) -> FenceGuard

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FenceGuard

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

Formats the value using the given formatter.