heap/WeakReferenceHarvester.h

   1 /*
   2  *  Copyright (C) 2011 Apple Inc. All rights reserved.
   3  *
   4  *  This library is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU Lesser General Public
   6  *  License as published by the Free Software Foundation; either
   7  *  version 2 of the License, or (at your option) any later version.
   8  *
   9  *  This library is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *  Lesser General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU Lesser General Public
  15  *  License along with this library; if not, write to the Free Software
  16  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  17  *
  18  */
  19
  20 #ifndef WeakReferenceHarvester_h
  21 #define WeakReferenceHarvester_h
  22
  23 #include "ListableHandler.h"
  24
  25 namespace JSC {
  26
  27 class MarkStack;
  28 class MarkStackSharedData;
  29 class SlotVisitor;
  30
  31 class WeakReferenceHarvester : public ListableHandler<WeakReferenceHarvester> {
  32 public:
  33     virtual void visitWeakReferences(SlotVisitor&) = 0;
  34
  35 protected:
  36     WeakReferenceHarvester()
  37     {
  38     }
  39
  40     virtual ~WeakReferenceHarvester() { }
  41 };
  42
  43 } // namespace JSC
  44
  45 #endif // WeakReferenceHarvester_h