1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/memory/metadataFactory.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,94 @@
1.4 +/*
1.5 + * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef SHARE_VM_MEMORY_METADATAFACTORY_HPP
1.29 +#define SHARE_VM_MEMORY_METADATAFACTORY_HPP
1.30 +
1.31 +#include "utilities/array.hpp"
1.32 +#include "utilities/exceptions.hpp"
1.33 +#include "utilities/globalDefinitions.hpp"
1.34 +
1.35 +class MetadataFactory : AllStatic {
1.36 + public:
1.37 + template <typename T>
1.38 + static Array<T>* new_array(ClassLoaderData* loader_data, int length, TRAPS) {
1.39 + // The "true" argument is because all metadata arrays are read only when
1.40 + // dumped to the shared archive
1.41 + return new (loader_data, length, /*read_only*/true, THREAD) Array<T>(length);
1.42 + }
1.43 +
1.44 + template <typename T>
1.45 + static Array<T>* new_array(ClassLoaderData* loader_data, int length, T value, TRAPS) {
1.46 + Array<T>* array = new_array<T>(loader_data, length, CHECK_NULL);
1.47 + for (int i = 0; i < length; i++) {
1.48 + array->at_put(i, value);
1.49 + }
1.50 + return array;
1.51 + }
1.52 +
1.53 + template <typename T>
1.54 + static Array<T>* new_writeable_array(ClassLoaderData* loader_data, int length, TRAPS) {
1.55 + return new (loader_data, length, /*read_only*/false, THREAD) Array<T>(length);
1.56 + }
1.57 +
1.58 + template <typename T>
1.59 + static Array<T>* new_writeable_array(ClassLoaderData* loader_data, int length, T value, TRAPS) {
1.60 + Array<T>* array = new_writeable_array<T>(loader_data, length, CHECK_NULL);
1.61 + for (int i = 0; i < length; i++) {
1.62 + array->at_put(i, value);
1.63 + }
1.64 + return array;
1.65 + }
1.66 +
1.67 + template <typename T>
1.68 + static void free_array(ClassLoaderData* loader_data, Array<T>* data) {
1.69 + if (data != NULL) {
1.70 + assert(loader_data != NULL, "shouldn't pass null");
1.71 + assert(!data->is_shared(), "cannot deallocate array in shared spaces");
1.72 + int size = data->size();
1.73 + if (DumpSharedSpaces) {
1.74 + loader_data->ro_metaspace()->deallocate((MetaWord*)data, size, false);
1.75 + } else {
1.76 + loader_data->metaspace_non_null()->deallocate((MetaWord*)data, size, false);
1.77 + }
1.78 + }
1.79 + }
1.80 +
1.81 + // Deallocation method for metadata
1.82 + template <class T>
1.83 + static void free_metadata(ClassLoaderData* loader_data, T md) {
1.84 + if (md != NULL) {
1.85 + assert(loader_data != NULL, "shouldn't pass null");
1.86 + int size = md->size();
1.87 + // Call metadata's deallocate function which will call deallocate fields
1.88 + assert(!DumpSharedSpaces, "cannot deallocate metadata when dumping CDS archive");
1.89 + assert(!md->on_stack(), "can't deallocate things on stack");
1.90 + assert(!md->is_shared(), "cannot deallocate if in shared spaces");
1.91 + md->deallocate_contents(loader_data);
1.92 + loader_data->metaspace_non_null()->deallocate((MetaWord*)md, size, md->is_klass());
1.93 + }
1.94 + }
1.95 +};
1.96 +
1.97 +#endif // SHARE_VM_MEMORY_METADATAFACTORY_HPP
