1 /*
   2  * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_JFR_LEAKPROFILER_CHECKPOINT_ROOTRESOLVER_HPP
  26 #define SHARE_VM_JFR_LEAKPROFILER_CHECKPOINT_ROOTRESOLVER_HPP
  27 
  28 #include "jfr/leakprofiler/utilities/rootType.hpp"
  29 #include "memory/allocation.hpp"
  30 #include "oops/oopsHierarchy.hpp"
  31 
  32 struct RootCallbackInfo {
  33   const void* _high;
  34   const void* _low;
  35   const void* _context;
  36   OldObjectRoot::System _system;
  37   OldObjectRoot::Type _type;
  38 };
  39 
  40 class RootCallback {
  41  public:
  42   virtual bool process(const RootCallbackInfo& info) = 0;
  43   virtual int entries() const = 0;
  44   virtual const void* at(int idx) const = 0;
  45 };
  46 
  47 class RootResolver : public AllStatic {
  48  public:
  49   static void resolve(RootCallback& callback);
  50 };
  51 
  52 #endif // SHARE_VM_JFR_LEAKPROFILER_CHECKPOINT_ROOTRESOLVER_HPP