Struct WeakCore 

pub struct WeakCore { /* private fields */ }

Weak handle to a Core — does not contribute to strong refcount.

Constructed via Core::weak_handle; upgraded back to a strong Core via WeakCore::upgrade. Used by long-lived binding-stored closures (notably ProducerBuildFns registered via [graphrefly_operators::ProducerBinding::register_producer_build]) to break the BenchBinding → registry → closure → strong-Core cycle that would otherwise leak the entire graph state when a BenchCore drops with active producer registrations.

Upgrade on each invocation; if the host Core was already dropped, upgrade() returns None and the closure should no-op (the host is being torn down, no work to do).

Implementations

impl WeakCore

pub fn upgrade(&self) -> Option<Core>

Try to upgrade back to a strong Core. Returns None if the host Core’s strong count has reached zero (i.e. the host BenchCore / equivalent owner was dropped).

Trait Implementations

impl Clone for WeakCore

fn clone(&self) -> WeakCore

Returns a duplicate of the value.

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

Performs copy-assignment from source.