Struct wasmer_journal::concrete::compacting::SubGroupIndex

struct SubGroupIndex(u64);

Index of a group of subevents in the journal which relate to a particular collective impact. For example. Creating a new file which may consist of an event to open a file, the events for writing the file data and the closing of the file are all related to a group of sub events that make up the act of creating that file. During compaction these events will be grouped together so they can be retained or discarded based on the final deterministic outcome of the entire log.

By grouping events into subevents it makes it possible to ignore an entire subgroup of events which are superseeded by a later event. For example, all the events involved in creating a file are irrelevant if that file is later deleted.

Tuple Fields

0: u64

Trait Implementations

impl Clone for SubGroupIndex

fn clone(&self) -> SubGroupIndex

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SubGroupIndex

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

Formats the value using the given formatter.

impl Hash for SubGroupIndex

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 SubGroupIndex

fn cmp(&self, other: &SubGroupIndex) -> 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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for SubGroupIndex

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

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

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

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

impl PartialOrd for SubGroupIndex

fn partial_cmp(&self, other: &SubGroupIndex) -> 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 Copy for SubGroupIndex

impl Eq for SubGroupIndex

impl StructuralPartialEq for SubGroupIndex