Mercurial > hg > graal-compiler
comparison src/share/vm/memory/metadataFactory.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 | 59a58e20dc60 |
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6724:36d1d483d5d6 | 6725:da91efe96a93 |
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1 /* | |
2 * Copyright (c) 2010, 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 #ifndef SHARE_VM_MEMORY_METADATAFACTORY_HPP | |
26 #define SHARE_VM_MEMORY_METADATAFACTORY_HPP | |
27 | |
28 #include "utilities/array.hpp" | |
29 #include "utilities/exceptions.hpp" | |
30 #include "utilities/globalDefinitions.hpp" | |
31 | |
32 class MetadataFactory : AllStatic { | |
33 public: | |
34 template <typename T> | |
35 static Array<T>* new_array(ClassLoaderData* loader_data, int length, TRAPS) { | |
36 // The "true" argument is because all metadata arrays are read only when | |
37 // dumped to the shared archive | |
38 return new (loader_data, length, /*read_only*/true, THREAD) Array<T>(length); | |
39 } | |
40 | |
41 template <typename T> | |
42 static Array<T>* new_array(ClassLoaderData* loader_data, int length, T value, TRAPS) { | |
43 Array<T>* array = new_array<T>(loader_data, length, CHECK_NULL); | |
44 for (int i = 0; i < length; i++) { | |
45 array->at_put(i, value); | |
46 } | |
47 return array; | |
48 } | |
49 | |
50 template <typename T> | |
51 static Array<T>* new_writeable_array(ClassLoaderData* loader_data, int length, TRAPS) { | |
52 return new (loader_data, length, /*read_only*/false, THREAD) Array<T>(length); | |
53 } | |
54 | |
55 template <typename T> | |
56 static Array<T>* new_writeable_array(ClassLoaderData* loader_data, int length, T value, TRAPS) { | |
57 Array<T>* array = new_writeable_array<T>(loader_data, length, CHECK_NULL); | |
58 for (int i = 0; i < length; i++) { | |
59 array->at_put(i, value); | |
60 } | |
61 return array; | |
62 } | |
63 | |
64 template <typename T> | |
65 static void free_array(ClassLoaderData* loader_data, Array<T>* data) { | |
66 if (data != NULL) { | |
67 assert(loader_data != NULL, "shouldn't pass null"); | |
68 int size = data->size(); | |
69 loader_data->metaspace_non_null()->deallocate((MetaWord*)data, size, false); | |
70 } | |
71 } | |
72 | |
73 // Deallocation method for metadata | |
74 template <class T> | |
75 static void free_metadata(ClassLoaderData* loader_data, T md) { | |
76 if (md != NULL) { | |
77 assert(loader_data != NULL, "shouldn't pass null"); | |
78 int size = md->size(); | |
79 // Call metadata's deallocate function which will call deallocate fields | |
80 assert(!md->on_stack(), "can't deallocate things on stack"); | |
81 md->deallocate_contents(loader_data); | |
82 loader_data->metaspace_non_null()->deallocate((MetaWord*)md, size, md->is_klass()); | |
83 } | |
84 } | |
85 }; | |
86 | |
87 #endif // SHARE_VM_MEMORY_METADATAFACTORY_HPP |