| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CYCLE_SUPER_H_ |
| #define CYCLE_SUPER_H_ |
| |
| #include "heap/stubs.h" |
| |
| namespace blink { |
| |
| class D; |
| |
| // This contains a leaking cycle: |
| // D -per-> C -sup-> B -sup-> A -ref-> D |
| |
| class A : public GarbageCollected<A> { |
| public: |
| virtual void Trace(Visitor*) const; |
| |
| private: |
| scoped_refptr<D> m_d; |
| }; |
| |
| class B : public A { |
| public: |
| virtual void Trace(Visitor*) const; |
| }; |
| |
| class C : public B { |
| public: |
| virtual void Trace(Visitor*) const; |
| }; |
| |
| class D : public RefCounted<C> { |
| private: |
| Persistent<C> m_c; |
| }; |
| |
| } |
| |
| #endif |