Struct RefCounted 

pub struct RefCounted<V> { /* private fields */ }

Table that tracks reference counts for shared resources.

Implementations

impl<V: Clone> RefCounted<V>

pub fn new() -> Self

pub fn insert(&mut self, key: &str, value: V) -> bool

Insert with initial ref-count of 1. Returns false if already exists.

pub fn acquire(&mut self, key: &str) -> Option<u32>

Increment ref-count. Returns new count, or None if not found.

pub fn release(&mut self, key: &str) -> Option<u32>

Decrement ref-count. Removes entry when count reaches 0. Returns remaining count, or None if not found.

pub fn get(&self, key: &str) -> Option<&V>

pub fn ref_count(&self, key: &str) -> Option<u32>

pub fn contains(&self, key: &str) -> bool

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn total_refs(&self) -> u64

pub fn keys(&self) -> Vec<&str>

pub fn clear(&mut self)

Trait Implementations

impl<V: Clone> Default for RefCounted<V>

fn default() -> Self

Returns the “default value” for a type.