--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/memory/CMSCollector.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2007 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.*;
+
+public class CMSCollector extends VMObject {
+  private static long markBitMapFieldOffset;
+
+  public CMSCollector(Address addr) {
+    super(addr);
+  }
+
+  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("CMSCollector");
+    markBitMapFieldOffset = type.getField("_markBitMap").getOffset();
+  }
+
+  //Accessing mark bitmap
+  public CMSBitMap markBitMap() {
+   return (CMSBitMap) VMObjectFactory.newObject(
+                                CMSBitMap.class,
+                                addr.addOffsetTo(markBitMapFieldOffset));
+  }
+
+  public long blockSizeUsingPrintezisBits(Address addr) {
+    CMSBitMap markBitMap = markBitMap();
+    long addressSize = VM.getVM().getAddressSize();
+    if ( markBitMap.isMarked(addr) &&  markBitMap.isMarked(addr.addOffsetTo(1*addressSize)) ) {
+       System.err.println("Printezis bits are set...");
+      Address nextOneAddr = markBitMap.getNextMarkedWordAddress(addr.addOffsetTo(2*addressSize));
+      //return size in bytes
+      long size =  (nextOneAddr.addOffsetTo(1*addressSize)).minus(addr);
+      return size;
+    } else {
+     //missing Printezis marks
+     System.err.println("Missing Printszis marks...");
+     return -1;
+    }
+
+  }
+}