| // 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 STACK_ALLOCATED_H_ |
| #define STACK_ALLOCATED_H_ |
| |
| #include "heap/stubs.h" |
| |
| namespace blink { |
| |
| class HeapObject; |
| |
| class PartObject { |
| DISALLOW_ALLOCATION(); |
| private: |
| Member<HeapObject> m_obj; // Needs tracing. |
| }; |
| |
| class StackObject { |
| STACK_ALLOCATED(); |
| private: |
| Member<HeapObject> m_obj; // Does not need tracing. |
| }; |
| |
| class AnotherStackObject : public PartObject { // Invalid base. |
| STACK_ALLOCATED(); |
| private: |
| StackObject m_part; // Can embed a stack allocated object. |
| }; |
| |
| class HeapObject : public GarbageCollected<HeapObject> { |
| public: |
| void trace(Visitor*); |
| private: |
| StackObject m_part; // Cannot embed a stack allocated object. |
| }; |
| |
| // STACK_ALLOCATED is inherited. |
| class DerivedStackObject : public StackObject { |
| private: |
| AnotherStackObject m_anotherPart; // Also fine. |
| }; |
| |
| } |
| |
| #endif |