--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/memory/DefNewGeneration.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2000-2005 Sun Microsystems, Inc.  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.memory;
+
+import java.io.*;
+import java.util.*;
+
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.runtime.*;
+import sun.jvm.hotspot.types.*;
+
+/** DefNewGeneration is a young generation containing eden, from- and
+    to-space. */
+
+public class DefNewGeneration extends Generation {
+  protected static AddressField edenSpaceField;
+  protected static AddressField fromSpaceField;
+  protected static AddressField toSpaceField;
+
+  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("DefNewGeneration");
+
+    edenSpaceField = type.getAddressField("_eden_space");
+    fromSpaceField = type.getAddressField("_from_space");
+    toSpaceField   = type.getAddressField("_to_space");
+  }
+
+  public DefNewGeneration(Address addr) {
+    super(addr);
+  }
+
+  public Generation.Name kind() {
+    return Generation.Name.DEF_NEW;
+  }
+
+  // Accessing spaces
+  public EdenSpace eden() {
+    return (EdenSpace) VMObjectFactory.newObject(EdenSpace.class, edenSpaceField.getValue(addr));
+  }
+
+  public ContiguousSpace from() {
+    return (ContiguousSpace) VMObjectFactory.newObject(ContiguousSpace.class, fromSpaceField.getValue(addr));
+  }
+
+  public ContiguousSpace to() {
+    return (ContiguousSpace) VMObjectFactory.newObject(ContiguousSpace.class, toSpaceField.getValue(addr));
+  }
+
+  public long capacity()            { return eden().capacity() + from().capacity(); /* to() is only used during scavenge */ }
+  public long used()                { return eden().used()     + from().used();     /* to() is only used during scavenge */ }
+  public long free()                { return eden().free()     + from().free();     /* to() is only used during scavenge */ }
+  public long contiguousAvailable() { return eden().free(); }
+
+  public String name() {
+    return "default new generation";
+  }
+
+  public void spaceIterate(SpaceClosure blk, boolean usedOnly) {
+    blk.doSpace(eden());
+    blk.doSpace(from());
+    if (!usedOnly) {
+      blk.doSpace(to());
+    }
+  }
+
+  public void printOn(PrintStream tty) {
+    tty.print("  eden");
+    eden().printOn(tty);
+    tty.print("  from");
+    from().printOn(tty);
+    tty.print("  to  ");
+    to().printOn(tty);
+  }
+}