Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/classfile/classLoaderData.inline.hpp@da91efe96a93 (annotated)
src/share/vm/classfile/classLoaderData.inline.hpp
Sat, 01 Sep 2012 13:25:18 -0400
- author
- coleenp
- date
- Sat, 01 Sep 2012 13:25:18 -0400
- changeset 4037
- da91efe96a93
- child 4304
- 90273fc0a981
- permissions
- -rw-r--r--
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| coleenp@4037 | 1 | /* |
| coleenp@4037 | 2 | * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved. |
| coleenp@4037 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| coleenp@4037 | 4 | * |
| coleenp@4037 | 5 | * This code is free software; you can redistribute it and/or modify it |
| coleenp@4037 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| coleenp@4037 | 7 | * published by the Free Software Foundation. |
| coleenp@4037 | 8 | * |
| coleenp@4037 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| coleenp@4037 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| coleenp@4037 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| coleenp@4037 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| coleenp@4037 | 13 | * accompanied this code). |
| coleenp@4037 | 14 | * |
| coleenp@4037 | 15 | * You should have received a copy of the GNU General Public License version |
| coleenp@4037 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| coleenp@4037 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| coleenp@4037 | 18 | * |
| coleenp@4037 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| coleenp@4037 | 20 | * or visit www.oracle.com if you need additional information or have any |
| coleenp@4037 | 21 | * questions. |
| coleenp@4037 | 22 | * |
| coleenp@4037 | 23 | */ |
| coleenp@4037 | 24 | |
| coleenp@4037 | 25 | #include "classfile/classLoaderData.hpp" |
| coleenp@4037 | 26 | #include "classfile/javaClasses.hpp" |
| coleenp@4037 | 27 | |
| coleenp@4037 | 28 | inline ClassLoaderData* ClassLoaderData::class_loader_data(oop loader) { |
| coleenp@4037 | 29 | if (loader == NULL) return ClassLoaderData::the_null_class_loader_data(); |
| coleenp@4037 | 30 | ClassLoaderData* loader_data = java_lang_ClassLoader::loader_data(loader); |
| coleenp@4037 | 31 | assert(loader_data != NULL, "Must be"); |
| coleenp@4037 | 32 | return loader_data; |
| coleenp@4037 | 33 | } |
| coleenp@4037 | 34 | |
| coleenp@4037 | 35 | |
| coleenp@4037 | 36 | inline ClassLoaderData *ClassLoaderDataGraph::find_or_create(Handle loader) { |
| coleenp@4037 | 37 | assert(loader() != NULL,"Must be a class loader"); |
| coleenp@4037 | 38 | // Gets the class loader data out of the java/lang/ClassLoader object, if non-null |
| coleenp@4037 | 39 | // it's already in the loader_data, so no need to add |
| coleenp@4037 | 40 | ClassLoaderData** loader_data_addr = java_lang_ClassLoader::loader_data_addr(loader()); |
| coleenp@4037 | 41 | ClassLoaderData* loader_data_id = *loader_data_addr; |
| coleenp@4037 | 42 | if (loader_data_id) { |
| coleenp@4037 | 43 | return loader_data_id; |
| coleenp@4037 | 44 | } |
| coleenp@4037 | 45 | return ClassLoaderDataGraph::add(loader_data_addr, loader); |
| coleenp@4037 | 46 | } |
