rev 60538 : imported patch jep387-all.patch
1 /*
2 * Copyright (c) 2010, 2019, 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_MEMORY_METADATAFACTORY_HPP
26 #define SHARE_MEMORY_METADATAFACTORY_HPP
27
28 #include "classfile/classLoaderData.hpp"
29 #include "memory/metaspace.hpp"
30 #include "oops/array.hpp"
31 #include "utilities/exceptions.hpp"
32 #include "utilities/globalDefinitions.hpp"
33
34 class MetadataFactory : AllStatic {
35 public:
36 template <typename T>
37 static Array<T>* new_array(ClassLoaderData* loader_data, int length, TRAPS) {
38 // The "true" argument is because all metadata arrays are read only when
39 // dumped to the shared archive
40 return new (loader_data, length, THREAD) Array<T>(length);
41 }
42
43 template <typename T>
44 static Array<T>* new_array(ClassLoaderData* loader_data, int length, T value, TRAPS) {
45 Array<T>* array = new_array<T>(loader_data, length, CHECK_NULL);
46 for (int i = 0; i < length; i++) {
47 array->at_put(i, value);
48 }
49 return array;
50 }
51
52 template <typename T>
53 static void free_array(ClassLoaderData* loader_data, Array<T>* data) {
54 if (data != NULL) {
55 assert(loader_data != NULL, "shouldn't pass null");
56 assert(!data->is_shared(), "cannot deallocate array in shared spaces");
57 int size = data->size();
58 loader_data->metaspace_non_null()->deallocate((MetaWord*)data, size, false);
59 }
60 }
61
62 // Deallocation method for metadata
63 template <class T>
64 static void free_metadata(ClassLoaderData* loader_data, T md) {
65 if (md != NULL) {
66 assert(loader_data != NULL, "shouldn't pass null");
67 int size = md->size();
68 // Call metadata's deallocate function which will call deallocate fields
69 assert(!md->on_stack(), "can't deallocate things on stack");
70 assert(!md->is_shared(), "cannot deallocate if in shared spaces");
71 md->deallocate_contents(loader_data);
72 loader_data->metaspace_non_null()->deallocate((MetaWord*)md, size, md->is_klass());
73 }
74 }
75 };
76
77 #endif // SHARE_MEMORY_METADATAFACTORY_HPP
--- EOF ---