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ffa35d8cf1
Co-authored-by: Gui Cao <gcao@openjdk.org> Co-authored-by: Fei Yang <fyang@openjdk.org> Co-authored-by: Martin Doerr <mdoerr@openjdk.org> Co-authored-by: Amit Kumar <amitkumar@openjdk.org> Reviewed-by: coleenp, adinn, fparain
74 lines
2.6 KiB
Java
74 lines
2.6 KiB
Java
/*
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* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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package sun.jvm.hotspot.oops;
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import sun.jvm.hotspot.debugger.Address;
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import sun.jvm.hotspot.runtime.VM;
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import sun.jvm.hotspot.types.Type;
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import sun.jvm.hotspot.types.TypeDataBase;
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import sun.jvm.hotspot.types.WrongTypeException;
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import sun.jvm.hotspot.utilities.GenericArray;
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import sun.jvm.hotspot.utilities.Observable;
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import sun.jvm.hotspot.utilities.Observer;
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public class ResolvedMethodArray extends GenericArray {
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static {
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VM.registerVMInitializedObserver(new Observer() {
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public void update(Observable o, Object data) {
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initialize(VM.getVM().getTypeDataBase());
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}
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});
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}
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private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
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elemType = db.lookupType("ResolvedMethodEntry");
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Type type = db.lookupType("Array<ResolvedMethodEntry>");
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dataFieldOffset = type.getAddressField("_data").getOffset();
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}
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private static long dataFieldOffset;
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protected static Type elemType;
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public ResolvedMethodArray(Address addr) {
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super(addr, dataFieldOffset);
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}
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public ResolvedMethodEntry getAt(int index) {
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if (index < 0 || index >= length()) throw new ArrayIndexOutOfBoundsException(index + " " + length());
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Type elemType = getElemType();
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Address data = getAddress().addOffsetTo(dataFieldOffset);
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long elemSize = elemType.getSize();
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return new ResolvedMethodEntry(data.addOffsetTo(index* elemSize));
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}
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public Type getElemType() {
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return elemType;
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}
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}
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