/*
 * Copyright (c) 2011, 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 */

package sun.jvm.hotspot.opto;

import java.util.*;
import sun.jvm.hotspot.ci.*;
import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.runtime.*;
import sun.jvm.hotspot.oops.*;
import sun.jvm.hotspot.types.*;

public class Compile 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) throws WrongTypeException {
    Type type      = db.lookupType("Compile");
    rootField = type.getAddressField("_root");
    uniqueField = new CIntField(type.getCIntegerField("_unique"), 0);
    entryBciField = new CIntField(type.getCIntegerField("_entry_bci"), 0);
    topField = type.getAddressField("_top");
    cfgField = type.getAddressField("_cfg");
    regallocField = type.getAddressField("_regalloc");
    methodField = type.getAddressField("_method");
    iltField = type.getAddressField("_ilt");
  }

  private static AddressField rootField;
  private static CIntField uniqueField;
  private static CIntField entryBciField;
  private static AddressField topField;
  private static AddressField cfgField;
  private static AddressField regallocField;
  private static AddressField methodField;
  private static AddressField iltField;

  public Compile(Address addr) {
    super(addr);
  }

  public Node root() {
    return new RootNode(rootField.getValue(this.getAddress()));
  }

  public int entryBci() {
    return (int)entryBciField.getValue(getAddress());
  }

  public ciMethod method() {
    return (ciMethod) ciObjectFactory.get(methodField.getValue(getAddress()));
  }

  public PhaseCFG cfg() {
    Address a = cfgField.getValue(this.getAddress());
    if (a != null) {
      return new PhaseCFG(a);
    }
    return null;
  }

  public InlineTree ilt() {
    Address a = iltField.getValue(this.getAddress());
    if (a != null) {
      return new InlineTree(a);
    }
    return null;
  }
}