1 /*
   2  * Copyright (c) 2011, 2012, 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 #include "classfile/classLoaderData.hpp"
  26 #include "classfile/javaClasses.hpp"
  27 
  28 inline ClassLoaderData* ClassLoaderData::class_loader_data(oop loader) {
  29   if (loader == NULL) return ClassLoaderData::the_null_class_loader_data();
  30   ClassLoaderData* loader_data = java_lang_ClassLoader::loader_data(loader);
  31   assert(loader_data != NULL, "Must be");
  32   return loader_data;
  33 }
  34 
  35 
  36 inline ClassLoaderData *ClassLoaderDataGraph::find_or_create(Handle loader, TRAPS) {
  37   assert(loader() != NULL,"Must be a class loader");
  38   // Gets the class loader data out of the java/lang/ClassLoader object, if non-null
  39   // it's already in the loader_data, so no need to add
  40   ClassLoaderData** loader_data_addr = java_lang_ClassLoader::loader_data_addr(loader());
  41   ClassLoaderData* loader_data_id = *loader_data_addr;
  42   if (loader_data_id) {
  43      return loader_data_id;
  44   }
  45   return ClassLoaderDataGraph::add(loader_data_addr, loader, THREAD);
  46 }