/*

 * Copyright (c) 2002, 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.oops;

import java.util.*;

import sun.jvm.hotspot.debugger.*;

import sun.jvm.hotspot.runtime.*;

import sun.jvm.hotspot.types.*;

public class BreakpointInfo extends VMObject {

  private static CIntegerField origBytecodeField;

  private static CIntegerField bciField;

  private static CIntegerField nameIndexField;

  private static CIntegerField signatureIndexField;

  private static AddressField  nextField;

  static {

    VM.registerVMInitializedObserver(new Observer() {

        public void update(Observable o, Object data) {

          initialize(VM.getVM().getTypeDataBase());

        }

      });

  }

  private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {

    Type type                  = db.lookupType("BreakpointInfo");

    origBytecodeField   = type.getCIntegerField("_orig_bytecode");

    bciField            = type.getCIntegerField("_bci");

    nameIndexField      = type.getCIntegerField("_name_index");

    signatureIndexField = type.getCIntegerField("_signature_index");

    nextField           = type.getAddressField ("_next");

  }

  public BreakpointInfo(Address addr) {

    super(addr);

  }

  public int  getOrigBytecode()   { return (int) origBytecodeField.getValue(addr);   }

  public int  getBCI()            { return (int) bciField.getValue(addr);            }

  public long getNameIndex()      { return nameIndexField.getValue(addr);            }

  public long getSignatureIndex() { return signatureIndexField.getValue(addr);       }

  public BreakpointInfo getNext() {

    return (BreakpointInfo) VMObjectFactory.newObject(BreakpointInfo.class, nextField.getValue(addr));

  }

  public boolean match(Method m, int bci) {

    return (bci == getBCI() && match(m));

  }

  public boolean match(Method m) {

    return (getNameIndex() == m.getNameIndex() &&

            getSignatureIndex() == m.getSignatureIndex());

  }

}