/*

 * Copyright (c) 2011, 2015, 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.

 *

 */

#include "precompiled.hpp"

#include "classfile/javaClasses.hpp"

#include "classfile/systemDictionary.hpp"

#include "gc_interface/collectedHeap.inline.hpp"

#include "memory/iterator.inline.hpp"

#include "memory/oopFactory.hpp"

#include "memory/specialized_oop_closures.hpp"

#include "oops/instanceKlass.hpp"

#include "oops/instanceMirrorKlass.hpp"

#include "oops/instanceOop.hpp"

#include "oops/oop.inline.hpp"

#include "oops/symbol.hpp"

#include "runtime/handles.inline.hpp"

#include "utilities/macros.hpp"

int InstanceMirrorKlass::_offset_of_static_fields = 0;

int InstanceMirrorKlass::instance_size(KlassHandle k) {

  if (k() != NULL && k->oop_is_instance()) {

    return align_object_size(size_helper() + InstanceKlass::cast(k())->static_field_size());

  }

  return size_helper();

}

instanceOop InstanceMirrorKlass::allocate_instance(KlassHandle k, TRAPS) {

  // Query before forming handle.

  int size = instance_size(k);

  KlassHandle h_k(THREAD, this);

  instanceOop i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL);

  // Since mirrors can be variable sized because of the static fields, store

  // the size in the mirror itself.

  java_lang_Class::set_oop_size(i, size);

  return i;

}

int InstanceMirrorKlass::oop_size(oop obj) const {

  return java_lang_Class::oop_size(obj);

}

int InstanceMirrorKlass::compute_static_oop_field_count(oop obj) {

  Klass* k = java_lang_Class::as_Klass(obj);

  if (k != NULL && k->oop_is_instance()) {

    return InstanceKlass::cast(k)->static_oop_field_count();

  }

  return 0;

}