Enum AccessCounter 

pub enum AccessCounter {
    Counting(Cell<u32>),
    Frozen(u32),
}

A counter for tracking singleton access groups on a HydroNode::Reference.

Each mutable access increments the counter (before and after) to isolate itself in its own group; immutable accesses share the current group.

Variants

Counting(Cell<u32>)

Frozen(u32)

Implementations

impl AccessCounter

pub fn new() -> Self

pub fn next_group(&self, is_mut: bool) -> Self

Assign the next access group for this reference. Mutable accesses get an isolated group (counter increments before and after). Immutable accesses share the current group.

pub fn freeze(&self) -> Self

Creates a frozen counter to prevent further counting.

pub fn frozen_group(&self) -> u32

Trait Implementations

impl Debug for AccessCounter

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

Formats the value using the given formatter.

impl Default for AccessCounter

fn default() -> Self

Returns the “default value” for a type.

impl Hash for AccessCounter

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 Serialize for AccessCounter

fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.