1 /*
   2  * Copyright (c) 2011, 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_CLASSFILE_CLASSLOADERDATA_INLINE_HPP
  26 #define SHARE_VM_CLASSFILE_CLASSLOADERDATA_INLINE_HPP
  27 
  28 #include "classfile/classLoaderData.hpp"
  29 #include "classfile/javaClasses.hpp"
  30 #include "oops/oop.inline.hpp"
  31 
  32 inline ClassLoaderData* ClassLoaderData::class_loader_data_or_null(oop loader) {
  33   if (loader == NULL) {
  34     return ClassLoaderData::the_null_class_loader_data();
  35   }
  36   return java_lang_ClassLoader::loader_data(loader);
  37 }
  38 
  39 inline ClassLoaderData* ClassLoaderData::class_loader_data(oop loader) {
  40   ClassLoaderData* loader_data = class_loader_data_or_null(loader);
  41   assert(loader_data != NULL, "Must be");
  42   return loader_data;
  43 }
  44 
  45 
  46 inline ClassLoaderData *ClassLoaderDataGraph::find_or_create(Handle loader, TRAPS) {
  47   guarantee(loader() != NULL && oopDesc::is_oop(loader()), "Loader must be oop");
  48   // Gets the class loader data out of the java/lang/ClassLoader object, if non-null
  49   // it's already in the loader_data, so no need to add
  50   ClassLoaderData* loader_data= java_lang_ClassLoader::loader_data(loader());
  51   if (loader_data) {
  52      return loader_data;
  53   }
  54   return ClassLoaderDataGraph::add(loader, false, THREAD);
  55 }
  56 
  57 size_t ClassLoaderDataGraph::num_instance_classes() {
  58   return _num_instance_classes;
  59 }
  60 
  61 size_t ClassLoaderDataGraph::num_array_classes() {
  62   return _num_array_classes;
  63 }
  64 
  65 void ClassLoaderDataGraph::inc_instance_classes(size_t count) {
  66   Atomic::add(count, &_num_instance_classes);
  67 }
  68 
  69 void ClassLoaderDataGraph::dec_instance_classes(size_t count) {
  70   assert(count <= _num_instance_classes, "Sanity");
  71   Atomic::sub(count, &_num_instance_classes);
  72 }
  73 
  74 void ClassLoaderDataGraph::inc_array_classes(size_t count) {
  75   Atomic::add(count, &_num_array_classes);
  76 }
  77 
  78 void ClassLoaderDataGraph::dec_array_classes(size_t count) {
  79   assert(count <= _num_array_classes, "Sanity");
  80   Atomic::sub(count, &_num_array_classes);
  81 }
  82 
  83 #endif // SHARE_VM_CLASSFILE_CLASSLOADERDATA_INLINE_HPP