Struct persist::storage::SeqNo

pub struct SeqNo(pub u64);

The “sequence number” of a persist state change.

Persist is a state machine, with all mutating requests modeled as input state changes sequenced into a log. This reflects that ordering.

This ordering also includes requests that were sequenced and applied to the persist state machine, but that application was deterministically made into a no-op because it was contextually invalid (a write or seal at a sealed timestamp, an allow_compactions at an unsealed timestamp, etc).

Read-only requests are assigned the SeqNo of a write, indicating that all mutating requests up to and including that one are reflected in the read state.

Tuple Fields

0: u64

Trait Implementations

impl Add<u64> for SeqNo

type Output = SeqNo

The resulting type after applying the + operator.

fn add(self, rhs: u64) -> SeqNo

Performs the + operation.

impl Clone for SeqNo

fn clone(&self) -> SeqNo

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SeqNo

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SeqNo

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Ord for SeqNo

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

Restrict a value to a certain interval.

impl PartialEq<SeqNo> for SeqNo

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<SeqNo> for SeqNo

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl PartialOrder for SeqNo

fn less_equal(&self, other: &Self) -> bool

Returns true iff one element is less than or equal to the other.

fn less_than(&self, other: &Self) -> bool

Returns true iff one element is strictly less than the other.

impl Serialize for SeqNo

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 SeqNo

impl Eq for SeqNo

impl StructuralEq for SeqNo

impl StructuralPartialEq for SeqNo