Struct SpaceInstanceId 

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

Unique per-instance identifier for a Space object.

Allocated from a monotonic atomic counter via SpaceInstanceId::next. Two distinct space instances always have different IDs, even if they have identical topology. Used by observation plan caching to avoid ABA reuse when a space is dropped and a new one is allocated at the same address.

Cloning a space preserves its instance ID, which is correct because immutable spaces with the same ID have the same topology.

Implementations

impl SpaceInstanceId

pub fn next() -> Self

Allocate a fresh, unique instance ID.

Each call returns a new ID that has never been returned before within this process. Thread-safe.

Trait Implementations

impl Clone for SpaceInstanceId

fn clone(&self) -> SpaceInstanceId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SpaceInstanceId

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

Formats the value using the given formatter.

impl Display for SpaceInstanceId

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

Formats the value using the given formatter.

impl Hash for SpaceInstanceId

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 SpaceInstanceId

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

fn eq(&self, other: &SpaceInstanceId) -> 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 SpaceInstanceId

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

impl Eq for SpaceInstanceId

impl StructuralPartialEq for SpaceInstanceId