/*

 * Copyright (c) 2011, 2012, 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 "classfile/classLoaderData.hpp"

#include "classfile/javaClasses.hpp"

inline ClassLoaderData* ClassLoaderData::class_loader_data(oop loader) {

  if (loader == NULL) return ClassLoaderData::the_null_class_loader_data();

  ClassLoaderData* loader_data = java_lang_ClassLoader::loader_data(loader);

  assert(loader_data != NULL, "Must be");

  return loader_data;

}

inline ClassLoaderData *ClassLoaderDataGraph::find_or_create(Handle loader, TRAPS) {

  assert(loader() != NULL,"Must be a class loader");

  // Gets the class loader data out of the java/lang/ClassLoader object, if non-null

  // it's already in the loader_data, so no need to add

  ClassLoaderData** loader_data_addr = java_lang_ClassLoader::loader_data_addr(loader());

  ClassLoaderData* loader_data_id = *loader_data_addr;

  if (loader_data_id) {

     return loader_data_id;

  }

  return ClassLoaderDataGraph::add(loader_data_addr, loader, THREAD);

}