Mercurial > hg > graal-compiler
view src/share/vm/memory/metadataFactory.hpp @ 21696:ca140f8c35be
Empty pointer stamps are also non-null.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 03 Jun 2015 14:08:29 +0200 |
parents | 4cb90023bf2b |
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/* * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_MEMORY_METADATAFACTORY_HPP #define SHARE_VM_MEMORY_METADATAFACTORY_HPP #include "classfile/classLoaderData.hpp" #include "utilities/array.hpp" #include "utilities/exceptions.hpp" #include "utilities/globalDefinitions.hpp" class MetadataFactory : AllStatic { public: template <typename T> static Array<T>* new_array(ClassLoaderData* loader_data, int length, TRAPS) { // The "true" argument is because all metadata arrays are read only when // dumped to the shared archive return new (loader_data, length, /*read_only*/true, THREAD) Array<T>(length); } template <typename T> static Array<T>* new_array(ClassLoaderData* loader_data, int length, T value, TRAPS) { Array<T>* array = new_array<T>(loader_data, length, CHECK_NULL); for (int i = 0; i < length; i++) { array->at_put(i, value); } return array; } template <typename T> static Array<T>* new_writeable_array(ClassLoaderData* loader_data, int length, TRAPS) { return new (loader_data, length, /*read_only*/false, THREAD) Array<T>(length); } template <typename T> static Array<T>* new_writeable_array(ClassLoaderData* loader_data, int length, T value, TRAPS) { Array<T>* array = new_writeable_array<T>(loader_data, length, CHECK_NULL); for (int i = 0; i < length; i++) { array->at_put(i, value); } return array; } template <typename T> static void free_array(ClassLoaderData* loader_data, Array<T>* data) { if (DumpSharedSpaces) { // FIXME: the freeing code is buggy, especially when PrintSharedSpaces is enabled. // Disable for now -- this means if you specify bad classes in your classlist you // may have wasted space inside the archive. return; } if (data != NULL) { assert(loader_data != NULL, "shouldn't pass null"); assert(!data->is_shared(), "cannot deallocate array in shared spaces"); int size = data->size(); if (DumpSharedSpaces) { loader_data->ro_metaspace()->deallocate((MetaWord*)data, size, false); } else { loader_data->metaspace_non_null()->deallocate((MetaWord*)data, size, false); } } } // Deallocation method for metadata template <class T> static void free_metadata(ClassLoaderData* loader_data, T md) { if (DumpSharedSpaces) { // FIXME: the freeing code is buggy, especially when PrintSharedSpaces is enabled. // Disable for now -- this means if you specify bad classes in your classlist you // may have wasted space inside the archive. return; } if (md != NULL) { assert(loader_data != NULL, "shouldn't pass null"); int size = md->size(); // Call metadata's deallocate function which will call deallocate fields assert(!DumpSharedSpaces, "cannot deallocate metadata when dumping CDS archive"); assert(!md->on_stack(), "can't deallocate things on stack"); assert(!md->is_shared(), "cannot deallocate if in shared spaces"); md->deallocate_contents(loader_data); loader_data->metaspace_non_null()->deallocate((MetaWord*)md, size, md->is_klass()); } } }; #endif // SHARE_VM_MEMORY_METADATAFACTORY_HPP