Struct StepId 

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

Position of a step within an execution.

Assigned at the moment a step is called (the Nth call in program order is StepId(N)), never at completion, so the value is stable across replays regardless of concurrent completion order (INV-2). Wraps a u32: an execution is capped well below u32::MAX steps by the retention policy.

Examples

use zeph_durable::StepId;

let step = StepId::new(7);
assert_eq!(step.value(), 7);

Implementations

impl StepId

pub fn new(value: u32) -> Self

Wrap a raw step position.

The value normally comes from the execution’s atomic step counter; this constructor exists for the journal backend and tests that reconstruct a persisted step.

pub fn value(self) -> u32

Return the raw step position.

Trait Implementations

impl Clone for StepId

fn clone(&self) -> StepId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for StepId

impl Debug for StepId

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StepId

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for StepId

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

Formats the value using the given formatter.

impl Eq for StepId

impl Hash for StepId

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 StepId

fn cmp(&self, other: &StepId) -> 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 StepId

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for StepId

fn partial_cmp(&self, other: &StepId) -> 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 StepId

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for StepId