Trait GcTrace 

pub unsafe trait GcTrace {
    // Required method
    fn trace(&self);

    // Provided methods
    fn size_hint(&self) -> usize { ... }
    fn cleanup(&self) { ... }
}

Trait required for all GC’d data. Unsafe because if the trace() implementation fails to call Gc::mark_trace() and GcWeak::mark_trace() on all of the Gc and GcWeak pointers that it can reach, the GC will free memory that is still in use. SAFETY: If the receiver also impls Drop, the drop() impl must not deref any Gc or GcWeak pointers

Required Methods

fn trace(&self)

SAFETY: Must call Gc::mark_trace() on every reachable Gc handle

Provided Methods

fn size_hint(&self) -> usize

If the GcTrace owns any allocations, this should return the extra allocated size. If the allocation can change size, like a Vec, then don’t include it in the size hint, or return a const estimate of the average size.

fn cleanup(&self)

Implementations on Foreign Types

impl GcTrace for str

fn trace(&self)

fn size_hint(&self) -> usize

impl<T> GcTrace for [T]

where T: GcTrace,

fn trace(&self)

fn size_hint(&self) -> usize

impl<T> GcTrace for Cell<T>

where T: GcTrace + Copy,

fn trace(&self)

fn size_hint(&self) -> usize

impl<T> GcTrace for RefCell<T>

where T: GcTrace,

fn trace(&self)

fn size_hint(&self) -> usize

Implementors

impl GcTrace for TraceSite

impl GcTrace for Variant

impl GcTrace for RuntimeError

impl GcTrace for Function

impl GcTrace for NativeFunction

impl GcTrace for IterState

impl GcTrace for Module

impl GcTrace for NamespaceEnv

impl GcTrace for VirtualMachine<'_>