/*

 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#ifndef SHARE_VM_MEMORY_CLASSIFY_HPP

#define SHARE_VM_MEMORY_CLASSIFY_HPP

#include "oops/oop.inline.hpp"

typedef enum oop_type {

  unknown_type,

  instance_type,

  instanceRef_type,

  objArray_type,

  symbol_type,

  klass_type,

  instanceKlass_type,

  method_type,

  constMethod_type,

  methodData_type,

  constantPool_type,

  constantPoolCache_type,

  typeArray_type,

  compiledICHolder_type,

  number_object_types

} object_type;

// Classify objects by type and keep counts.

// Print the count and space taken for each type.

class ClassifyObjectClosure : public ObjectClosure {

private:

  static const char* object_type_name[number_object_types];

  int total_object_count;

  size_t total_object_size;

  int object_count[number_object_types];

  size_t object_size[number_object_types];

public:

  ClassifyObjectClosure() { reset(); }

  void reset();

  void do_object(oop obj);

  static object_type classify_object(oop obj, bool count);

  size_t print();

};

// Count objects using the alloc_count field in the object's klass

// object.

class ClassifyInstanceKlassClosure : public ClassifyObjectClosure {

private:

  int total_instances;

public:

  ClassifyInstanceKlassClosure() { reset(); }

  void reset();

  void print();

  void do_object(oop obj);

};

// Clear the alloc_count fields in all classes so that the count can be

// restarted.

class ClearAllocCountClosure : public ObjectClosure {

public:

  void do_object(oop obj) {

    if (obj->is_klass()) {

      Klass* k = Klass::cast((klassOop)obj);

      k->set_alloc_count(0);

    }

  }

};

#endif // SHARE_VM_MEMORY_CLASSIFY_HPP