1 /* 2 * Copyright (c) 2010, 2013, 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 "classfile/classLoaderData.hpp" 29 #include "utilities/array.hpp" 30 #include "utilities/exceptions.hpp" 31 #include "utilities/globalDefinitions.hpp" 32 33 class MetadataFactory : AllStatic { 34 public: 35 template <typename T> 36 static Array<T>* new_array(ClassLoaderData* loader_data, int length, TRAPS) { 37 // The "true" argument is because all metadata arrays are read only when 38 // dumped to the shared archive 39 return new (loader_data, length, /*read_only*/true, THREAD) Array<T>(length); 40 } 41 42 template <typename T> 43 static Array<T>* new_array(ClassLoaderData* loader_data, int length, T value, TRAPS) { 44 Array<T>* array = new_array<T>(loader_data, length, CHECK_NULL); 45 for (int i = 0; i < length; i++) { 46 array->at_put(i, value); 47 } 48 return array; 49 } 50 51 template <typename T> 52 static Array<T>* new_writeable_array(ClassLoaderData* loader_data, int length, TRAPS) { 53 return new (loader_data, length, /*read_only*/false, THREAD) Array<T>(length); 54 } 55 56 template <typename T> 57 static Array<T>* new_writeable_array(ClassLoaderData* loader_data, int length, T value, TRAPS) { 58 Array<T>* array = new_writeable_array<T>(loader_data, length, CHECK_NULL); 59 for (int i = 0; i < length; i++) { 60 array->at_put(i, value); 61 } 62 return array; 63 } 64 65 template <typename T> 66 static void free_array(ClassLoaderData* loader_data, Array<T>* data) { 67 if (data != NULL) { 68 assert(loader_data != NULL, "shouldn't pass null"); 69 assert(!data->is_shared(), "cannot deallocate array in shared spaces"); 70 int size = data->size(); 71 if (DumpSharedSpaces) { 72 loader_data->ro_metaspace()->deallocate((MetaWord*)data, size, false); 73 } else { 74 loader_data->metaspace_non_null()->deallocate((MetaWord*)data, size, false); 75 } 76 } 77 } 78 79 // Deallocation method for metadata 80 template <class T> 81 static void free_metadata(ClassLoaderData* loader_data, T md) { 82 if (md != NULL) { 83 assert(loader_data != NULL, "shouldn't pass null"); 84 int size = md->size(); 85 // Call metadata's deallocate function which will call deallocate fields 86 assert(!DumpSharedSpaces, "cannot deallocate metadata when dumping CDS archive"); 87 assert(!md->on_stack(), "can't deallocate things on stack"); 88 assert(!md->is_shared(), "cannot deallocate if in shared spaces"); 89 md->deallocate_contents(loader_data); 90 loader_data->metaspace_non_null()->deallocate((MetaWord*)md, size, md->is_klass()); 91 } 92 } 93 }; 94 95 #endif // SHARE_VM_MEMORY_METADATAFACTORY_HPP