Trace

Trait Trace

pub trait Trace:
    Send
    + Sync
    + 'static {
    const MAY_CONTAIN_REFERENCES: bool;

    // Required method
    fn trace(&self, tracer: &mut Tracer<'_>);
}

Expand description

A type that can find and mark any references it has.

Required Associated Constants§

const MAY_CONTAIN_REFERENCES: bool

If true, this type may contain references and should have its trace() function invoked during the collector’s “mark” phase.

Required Methods§

fn trace(&self, tracer: &mut Tracer<'_>)

Traces all refrences that this value references.

This function should invoke Tracer::mark() for each Ref<T> it contains. Failing to do so will allow the garbage collector to free the data, preventing the ability to load() the data in the future.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types§

impl<K> Trace for BTreeSet<K>
where K: Trace,

const MAY_CONTAIN_REFERENCES: bool = K::MAY_CONTAIN_REFERENCES

fn trace(&self, tracer: &mut Tracer<'_>)

impl<K> Trace for Set<K>
where K: Trace + Sort,

const MAY_CONTAIN_REFERENCES: bool = K::MAY_CONTAIN_REFERENCES

fn trace(&self, tracer: &mut Tracer<'_>)

impl<K, S> Trace for HashSet<K, S>
where K: Trace, S: Send + Sync + 'static,

const MAY_CONTAIN_REFERENCES: bool = K::MAY_CONTAIN_REFERENCES

fn trace(&self, tracer: &mut Tracer<'_>)

impl<K, V> Trace for BTreeMap<K, V>
where K: Trace, V: Trace,

const MAY_CONTAIN_REFERENCES: bool

fn trace(&self, tracer: &mut Tracer<'_>)

impl<K, V> Trace for Map<K, V>
where K: Trace + Sort, V: Trace,

const MAY_CONTAIN_REFERENCES: bool

fn trace(&self, tracer: &mut Tracer<'_>)

impl<K, V, S> Trace for HashMap<K, V, S>
where K: Trace, V: Trace, S: Send + Sync + 'static,

const MAY_CONTAIN_REFERENCES: bool

fn trace(&self, tracer: &mut Tracer<'_>)

impl<T> Trace for BinaryHeap<T>
where T: Trace,

const MAY_CONTAIN_REFERENCES: bool = T::MAY_CONTAIN_REFERENCES

fn trace(&self, tracer: &mut Tracer<'_>)

impl<T> Trace for LinkedList<T>
where T: Trace,

const MAY_CONTAIN_REFERENCES: bool = T::MAY_CONTAIN_REFERENCES

fn trace(&self, tracer: &mut Tracer<'_>)

impl<T> Trace for VecDeque<T>
where T: Trace,

const MAY_CONTAIN_REFERENCES: bool = T::MAY_CONTAIN_REFERENCES

fn trace(&self, tracer: &mut Tracer<'_>)

impl<T> Trace for Vec<T>
where T: Trace,

const MAY_CONTAIN_REFERENCES: bool = T::MAY_CONTAIN_REFERENCES

fn trace(&self, tracer: &mut Tracer<'_>)

impl<T, const N: usize> Trace for [T; N]
where T: Trace,

const MAY_CONTAIN_REFERENCES: bool = T::MAY_CONTAIN_REFERENCES

fn trace(&self, tracer: &mut Tracer<'_>)

Implementors§

impl Trace for AnyRef

const MAY_CONTAIN_REFERENCES: bool = true

impl<T> Trace for Ref<T>
where T: Collectable,

const MAY_CONTAIN_REFERENCES: bool = true

impl<T> Trace for Root<T>
where T: Collectable,

const MAY_CONTAIN_REFERENCES: bool = false

impl<T> Trace for T
where T: ContainsNoRefs,

const MAY_CONTAIN_REFERENCES: bool = false