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/classLoaderMetaspace.hpp" 30 #include "memory/metaspace/metaspaceEnums.hpp" 31 #include "oops/array.hpp" 32 #include "utilities/exceptions.hpp" 33 #include "utilities/globalDefinitions.hpp" 34 35 class MetadataFactory : AllStatic { 36 public: 37 template <typename T> 38 static Array<T>* new_array(ClassLoaderData* loader_data, int length, TRAPS) { 39 // The "true" argument is because all metadata arrays are read only when 40 // dumped to the shared archive 41 return new (loader_data, length, THREAD) Array<T>(length); 42 } 43 44 template <typename T> 45 static Array<T>* new_array(ClassLoaderData* loader_data, int length, T value, TRAPS) { 46 Array<T>* array = new_array<T>(loader_data, length, CHECK_NULL); 47 for (int i = 0; i < length; i++) { 48 array->at_put(i, value); 49 } 50 return array; 51 } 52 53 template <typename T> 54 static void free_array(ClassLoaderData* loader_data, Array<T>* data) { 55 if (data != NULL) { 56 assert(loader_data != NULL, "shouldn't pass null"); 57 assert(!data->is_shared(), "cannot deallocate array in shared spaces"); 58 int size = data->size(); 59 loader_data->metaspace_non_null()->deallocate((MetaWord*)data, size, false); 60 } 61 } 62 63 // Deallocation method for metadata 64 template <class T> 65 static void free_metadata(ClassLoaderData* loader_data, T md) { 66 if (md != NULL) { 67 assert(loader_data != NULL, "shouldn't pass null"); 68 int size = md->size(); 69 // Call metadata's deallocate function which will call deallocate fields 70 assert(!md->on_stack(), "can't deallocate things on stack"); 71 assert(!md->is_shared(), "cannot deallocate if in shared spaces"); 72 md->deallocate_contents(loader_data); 73 loader_data->metaspace_non_null()->deallocate((MetaWord*)md, size, md->is_klass()); 74 } 75 } 76 }; 77 78 #endif // SHARE_MEMORY_METADATAFACTORY_HPP