tools/clang/blink_gc_plugin/tests/stack_allocated.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef STACK_ALLOCATED_H_
   6 #define STACK_ALLOCATED_H_
   7
   8 #include "heap/stubs.h"
   9
  10 namespace blink {
  11
  12 class HeapObject;
  13
  14 class PartObject {
  15     DISALLOW_ALLOCATION();
  16 private:
  17     Member<HeapObject> m_obj; // Needs tracing.
  18 };
  19
  20 class StackObject {
  21     STACK_ALLOCATED();
  22 private:
  23     Member<HeapObject> m_obj; // Does not need tracing.
  24 };
  25
  26 class AnotherStackObject : public PartObject { // Invalid base.
  27     STACK_ALLOCATED();
  28 private:
  29     StackObject m_part; // Can embed a stack allocated object.
  30 };
  31
  32 class HeapObject : public GarbageCollected<HeapObject> {
  33 public:
  34     void trace(Visitor*);
  35 private:
  36     StackObject m_part; // Cannot embed a stack allocated object.
  37 };
  38
  39 // STACK_ALLOCATED is inherited.
  40 class DerivedStackObject : public StackObject {
  41 private:
  42     AnotherStackObject m_anotherPart; // Also fine.
  43 };
  44
  45 }
  46
  47 #endif