Mercurial > hg > graal-jvmci-8
view agent/src/share/classes/sun/jvm/hotspot/runtime/JNIid.java @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author | coleenp |
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date | Sat, 01 Sep 2012 13:25:18 -0400 |
parents | c18cbe5936b8 |
children |
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/* * Copyright (c) 2002, 2012, 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 sun.jvm.hotspot.runtime; import java.util.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.oops.*; import sun.jvm.hotspot.types.*; public class JNIid extends VMObject { private static MetadataField holder; private static AddressField next; private static CIntegerField offset; private static MetadataField resolvedMethod; private static MetadataField resolvedReceiver; private ObjectHeap heap; static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } }); } private static synchronized void initialize(TypeDataBase db) { // FIXME: JNIid has been removed as part of redesign of JNI method, // field ID generation. Please refer to src/share/vm/prims/jniId.hpp/.cpp // For now, commenting out the below code. /*********************************************************** Type type = db.lookupType("JNIid"); holder = type.getOopField("_holder"); next = type.getAddressField("_next"); offset = type.getCIntegerField("_offset"); resolvedMethod = type.getOopField("_resolved_method"); resolvedReceiver = type.getOopField("_resolved_receiver"); ***********************************************************/ } public JNIid(Address addr, ObjectHeap heap) { super(addr); this.heap = heap; } public JNIid next() { Address nextAddr = next.getValue(addr); if (nextAddr == null) { return null; } return new JNIid(nextAddr, heap); } public Klass holder() { return (Klass) holder.getValue(addr); } public int offset() { return (int) offset.getValue(addr); } public Method method() { return ((InstanceKlass) holder()).getMethods().at(offset()); } public Method resolvedMethod() { return (Method)resolvedMethod.getValue(addr); } public Klass resolvedReceiver() { return (Klass) resolvedReceiver.getValue(addr); } }