Struct FenceEpoch 

pub struct FenceEpoch(/* private fields */);

A monotonic epoch counter used for fencing stale operations.

Epochs are totally ordered unsigned 64-bit integers. A higher epoch supersedes all lower epochs — any operation stamped with a lower epoch than the current one is considered stale.

Implementations

impl FenceEpoch

pub fn new(value: u64) -> Self

Create a new epoch with the given value.

pub fn zero() -> Self

The initial epoch (0).

pub fn is_stale(&self, current: &FenceEpoch) -> bool

Returns true if this epoch is strictly behind current.

pub fn is_current(&self, current: &FenceEpoch) -> bool

Returns true if this epoch equals current.

pub fn is_newer(&self, other: &FenceEpoch) -> bool

Returns true if this epoch is strictly ahead of other.

pub fn from_generation(generation: u64) -> Self

Create a fence epoch seeded from a lease’s generation counter.

This bridges graph-level generation tracking (e.g. [grafos_core::LeaseRef::generation]) with the fencing primitives in this crate, allowing stale-write rejection based on lease generation numbers.

pub fn bump(&self) -> FenceEpoch

Returns a new epoch one greater than this one.

pub fn value(&self) -> u64

Unwrap the inner u64 value.

Trait Implementations

impl Clone for FenceEpoch

fn clone(&self) -> FenceEpoch

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FenceEpoch

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FenceEpoch

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for FenceEpoch

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

Formats the value using the given formatter.

impl Hash for FenceEpoch

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for FenceEpoch

fn cmp(&self, other: &FenceEpoch) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for FenceEpoch

fn eq(&self, other: &FenceEpoch) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for FenceEpoch

fn partial_cmp(&self, other: &FenceEpoch) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for FenceEpoch

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for FenceEpoch

impl Eq for FenceEpoch

impl StructuralPartialEq for FenceEpoch