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LibJS: Revoke any outstanding WeakPtr<Shape> when zombifying shapes

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The forward transition cache in Shape uses WeakPtr<Shape> to learn when
a cached transition has been garbage collected.

When running in zombification mode, we have to explicitly revoke any
outstanding WeakPtrs to a Shape when it becomes a zombie. That ensures
that it gets pruned from transition caches.
This commit is contained in:
Andreas Kling 2021-09-11 17:01:45 +02:00
parent cd7dbe3e97
commit b9eb8d00ca
2 changed files with 6 additions and 0 deletions
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Userland/Libraries/LibJS/Runtime/Shape.h
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@ -88,6 +88,7 @@ public:
private:
virtual const char* class_name() const override { return "Shape"; }
virtual void visit_edges(Visitor&) override;
virtual void did_become_zombie() override;
Shape* get_or_prune_cached_forward_transition(TransitionKey const&);
void ensure_property_table() const;