| /* |
| * Copyright (c) 2015, 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. |
| */ |
| package jdk.vm.ci.hotspot; |
| |
| /** |
| * A tag interface indicating that this type is a wrapper around a HotSpot metaspace object that |
| * requires GC interaction to keep alive. |
| * |
| * It would preferable if this were the base class containing the pointer but that would require |
| * mixins since most of the wrapper types have complex supertype hierarchies. |
| */ |
| interface MetaspaceWrapperObject { |
| |
| long getMetaspacePointer(); |
| |
| /** |
| * Check if this object is properly registered for metadata tracking. All classes which |
| * implement this interface must be registered with the |
| * {@link HotSpotJVMCIMetaAccessContext#add} unless they are kept alive through other means. |
| * Currently the only type which doesn't require explicit registration is |
| * {@link HotSpotResolvedObjectTypeImpl} since it's kept alive by references to the |
| * {@link Class}. |
| * |
| * @return true if this object is properly registered for meta data tracking. |
| */ |
| default boolean isRegistered() { |
| return HotSpotJVMCIRuntime.runtime().metaAccessContext.isRegistered(this); |
| } |
| } |