tools/clang/blink_gc_plugin/tests/cycle_super.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 CYCLE_SUPER_H_
   6 #define CYCLE_SUPER_H_
   7
   8 #include "heap/stubs.h"
   9
  10 namespace blink {
  11
  12 class D;
  13
  14 // This contains a leaking cycle:
  15 // D -per-> C -sup-> B -sup-> A -ref-> D
  16
  17 class A : public GarbageCollectedFinalized<A> {
  18 public:
  19     virtual void trace(Visitor*);
  20 private:
  21     RefPtr<D> m_d;
  22 };
  23
  24 class B : public A {
  25 public:
  26     virtual void trace(Visitor*);
  27 };
  28
  29 class C : public B {
  30 public:
  31     virtual void trace(Visitor*);
  32 };
  33
  34 class D : public RefCounted<C> {
  35 private:
  36     Persistent<C> m_c;
  37 };
  38
  39 }
  40
  41 #endif