Mercurial > hg > truffle
comparison src/share/vm/classfile/classLoaderData.inline.hpp @ 6725:da91efe96a93
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>
author | coleenp |
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date | Sat, 01 Sep 2012 13:25:18 -0400 |
parents | |
children | 90273fc0a981 |
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6724:36d1d483d5d6 | 6725:da91efe96a93 |
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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) { | |
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); | |
46 } |