/*
 * Copyright (c) 2003, 2022, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */

package sun.jvm.hotspot.gc.parallel;

import java.io.*;
import java.util.*;

import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.memory.*;
import sun.jvm.hotspot.runtime.*;
import sun.jvm.hotspot.types.*;
import sun.jvm.hotspot.utilities.Observable;
import sun.jvm.hotspot.utilities.Observer;

public class PSOldGen 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("PSOldGen");
      objectSpaceField = type.getAddressField("_object_space");
   }

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

   // Fields
   private static AddressField objectSpaceField;

   // Accessors
   public MutableSpace objectSpace() {
      return VMObjectFactory.newObject(MutableSpace.class, objectSpaceField.getValue(addr));
   }

   public long capacity() {
      return objectSpace().capacity();
   }

   public long used() {
      return objectSpace().used();
   }

   public boolean isIn(Address a) {
      return objectSpace().contains(a);
   }

   public void printOn(PrintStream tty) {
      tty.print("PSOldGen [ ");
      objectSpace().printOn(tty);
      tty.print(" ] ");
   }
}
