agent/src/share/classes/sun/jvm/hotspot/memory/TenuredGeneration.java

rev 7420 : [mq]: removeOneContigSpaceGeneration

*** 1,7 ****
  /*
!  * Copyright (c) 2000, 2003, 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.
--- 1,7 ----
  /*
!  * Copyright (c) 2000, 2014, 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.
*** 22,38 ****
   *
   */
  
  package sun.jvm.hotspot.memory;
  
  import sun.jvm.hotspot.debugger.*;
  
- public class TenuredGeneration extends OneContigSpaceCardGeneration {
    public TenuredGeneration(Address addr) {
      super(addr);
    }
  
    public Generation.Name kind() {
      return Generation.Name.MARK_SWEEP_COMPACT;
    }
  
    public String name() {
--- 22,87 ----
   *
   */
  
  package sun.jvm.hotspot.memory;
  
+ import java.io.*;
+ import java.util.*;
+ 
  import sun.jvm.hotspot.debugger.*;
+ import sun.jvm.hotspot.runtime.*;
+ import sun.jvm.hotspot.types.*;
+ 
+ /** <P> TenuredGeneration models a heap of old objects contained
+     in a single contiguous space. </P>
+ 
+     <P> Garbage collection is performed using mark-compact. </P> */
+ 
+ public class TenuredGeneration extends CardGeneration {
+   private static AddressField theSpaceField;
+ 
+   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("TenuredGeneration");
+ 
+     theSpaceField = type.getAddressField("_the_space");
+   }
  
    public TenuredGeneration(Address addr) {
      super(addr);
    }
  
+   public ContiguousSpace theSpace() {
+     return (ContiguousSpace) VMObjectFactory.newObject(ContiguousSpace.class, theSpaceField.getValue(addr));
+   }
+ 
+   public boolean isIn(Address p) {
+     return theSpace().contains(p);
+   }
+ 
+   /** Space queries */
+   public long capacity()            { return theSpace().capacity();                                }
+   public long used()                { return theSpace().used();                                    }
+   public long free()                { return theSpace().free();                                    }
+   public long contiguousAvailable() { return theSpace().free() + virtualSpace().uncommittedSize(); }
+ 
+   public void spaceIterate(SpaceClosure blk, boolean usedOnly) {
+     blk.doSpace(theSpace());
+   }
+ 
+   public void printOn(PrintStream tty) {
+     tty.print("  old ");
+     theSpace().printOn(tty);
+   }
+ 
    public Generation.Name kind() {
      return Generation.Name.MARK_SWEEP_COMPACT;
    }
  
    public String name() {