Mercurial > hg > graal-jvmci-8
view agent/src/share/classes/sun/jvm/hotspot/utilities/HashtableBucket.java @ 2177:3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank
author | coleenp |
---|---|
date | Thu, 27 Jan 2011 16:11:27 -0800 |
parents | c18cbe5936b8 |
children | d2a62e0f25eb |
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/* * Copyright (c) 2003, 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.utilities; import java.util.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.types.*; import sun.jvm.hotspot.runtime.*; public class HashtableBucket extends VMObject { static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } }); } private static synchronized void initialize(TypeDataBase db) { Type type = db.lookupType("HashtableBucket"); entryField = type.getAddressField("_entry"); } // Field private static AddressField entryField; // Accessor - accepts Class<? extends BasicHashtableEntry> public BasicHashtableEntry getEntry(Class clazz) { Address tmp = entryField.getValue(addr); return (BasicHashtableEntry) VMObjectFactory.newObject(clazz, tmp); } public BasicHashtableEntry entry() { return getEntry(HashtableEntry.class); } public HashtableBucket(Address addr) { super(addr); } }