--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/memory/GenerationFactory.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,88 @@
+/*
+ * 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.util.*;
+
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.runtime.*;
+import sun.jvm.hotspot.types.*;
+
+/** Factory containing a VirtualConstructor suitable for instantiating
+    wrapper objects for all types of generations */
+
+public class GenerationFactory {
+  private static VirtualConstructor ctor;
+
+  static {
+    VM.registerVMInitializedObserver(new Observer() {
+        public void update(Observable o, Object data) {
+          initialize(VM.getVM().getTypeDataBase());
+        }
+      });
+  }
+
+  private static synchronized void initialize(TypeDataBase db) {
+    ctor = new VirtualConstructor(db);
+
+    ctor.addMapping("CompactingPermGenGen", CompactingPermGenGen.class);
+    ctor.addMapping("CMSPermGenGen", CMSPermGenGen.class);
+    ctor.addMapping("DefNewGeneration", DefNewGeneration.class);
+    ctor.addMapping("ParNewGeneration", ParNewGeneration.class);
+    ctor.addMapping("TenuredGeneration", TenuredGeneration.class);
+    ctor.addMapping("ConcurrentMarkSweepGeneration", ConcurrentMarkSweepGeneration.class);
+  }
+
+  public static Generation newObject(Address addr) {
+      try {
+          return (Generation) ctor.instantiateWrapperFor(addr);
+      } catch (WrongTypeException e) {
+          return new Generation(addr) {
+                  public String name() {
+                      return "unknown generation type";
+                  }
+                  public void spaceIterate(SpaceClosure blk, boolean usedOnly) {
+                  }
+                  public void printOn(java.io.PrintStream tty) {
+                      tty.println("unknown subtype of Generation @ " + getAddress() + " (" +
+                                  virtualSpace().low() + "," + virtualSpace().high() + ")");
+                  }
+                  public long used() {
+                      return 0;
+                  }
+                  public long free() {
+                      return 0;
+                  }
+                  public long capacity() {
+                      return 0;
+                  }
+                  public long contiguousAvailable() {
+                      return 0;
+                  }
+
+              };
+      }
+  }
+}