src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/utilities/IntArray.java
author erikj
Tue, 12 Sep 2017 19:03:39 +0200
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/*
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 * Copyright (c) 2012, 2015, 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.utilities;
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import java.util.Observable;
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import java.util.Observer;
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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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public class IntArray 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("int");
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    Type type = db.lookupType("Array<int>");
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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 IntArray(Address addr) {
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    super(addr, dataFieldOffset);
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  }
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  public int at(int i) {
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    return (int)getIntegerAt(i);
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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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}