| // 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_PTRS_H_ |
| #define CYCLE_PTRS_H_ |
| |
| #include "heap/stubs.h" |
| |
| namespace blink { |
| |
| class B; |
| class C; |
| class D; |
| class E; |
| |
| // This contains a leaking cycle: |
| // E -per-> A -mem-> B -ref-> C -own-> D -own-vec-> E |
| |
| // The traced cycle from A -> B -> A does not leak. |
| |
| class A : public GarbageCollected<A> { |
| public: |
| virtual void trace(Visitor*); |
| private: |
| Member<B> m_b; |
| }; |
| |
| class B : public GarbageCollectedFinalized<B> { |
| public: |
| virtual void trace(Visitor*); |
| private: |
| Member<A> m_a; |
| RefPtr<C> m_c; |
| }; |
| |
| class C : public RefCounted<C> { |
| private: |
| OwnPtr<D> m_d; |
| }; |
| |
| class D { |
| private: |
| Vector<OwnPtr<E> > m_es; |
| }; |
| |
| class E { |
| private: |
| Persistent<A> m_a; |
| }; |
| |
| } |
| |
| #endif |