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diff --git a/src/mem/ruby/common/Set.hh b/src/mem/ruby/common/Set.hh
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+
+/*
+ * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Set.h
+ *
+ * Description:
+ *
+ * $Id$
+ *
+ */
+
+// Define this to use the BigSet class which is slower, but supports
+// sets of size larger than 32.
+
+// #define BIGSET
+
+#define OPTBIGSET
+
+#ifdef OPTBIGSET
+#include "OptBigSet.hh"
+#else
+
+#ifdef BIGSET
+#include "BigSet.hh" // code to supports sets larger than 32
+#else
+
+#ifndef SET_H
+#define SET_H
+
+#include "Global.hh"
+#include "Vector.hh"
+#include "NodeID.hh"
+#include "RubyConfig.hh"
+
+class Set {
+public:
+  // Constructors
+  // creates and empty set
+  Set();
+  Set(int size);
+
+  // used during the replay mechanism
+  //  Set(const char *str);
+
+  //  Set(const Set& obj);
+  //  Set& operator=(const Set& obj);
+
+  // Destructor
+  // ~Set();
+
+  // Public Methods
+
+  void add(NodeID newElement);
+  void addSet(const Set& set);
+  void addRandom();
+  void remove(NodeID newElement);
+  void removeSet(const Set& set);
+  void clear();
+  void broadcast();
+  int count() const;
+  bool isEqual(const Set& set);
+
+  Set OR(const Set& orSet) const;  // return the logical OR of this set and orSet
+  Set AND(const Set& andSet) const;  // return the logical AND of this set and andSet
+
+  // Returns true if the intersection of the two sets is non-empty
+  bool intersectionIsNotEmpty(const Set& other_set) const;
+
+  // Returns true if the intersection of the two sets is empty
+  bool intersectionIsEmpty(const Set& other_set) const;
+
+  bool isSuperset(const Set& test) const;
+  bool isSubset(const Set& test) const { return test.isSuperset(*this); }
+  bool isElement(NodeID element) const;
+  bool isBroadcast() const;
+  bool isEmpty() const;
+
+  NodeID smallestElement() const;
+
+  //  int size() const;
+  void setSize (int size);
+
+  // get element for a index
+  NodeID elementAt(int index);
+  int getSize() const { return m_size; }
+
+  // DEPRECATED METHODS
+  void addToSet(NodeID newElement) { add(newElement); }  // Deprecated
+  void removeFromSet(NodeID newElement) { remove(newElement); }  // Deprecated
+  void clearSet() { clear(); }   // Deprecated
+  void setBroadcast() { broadcast(); }   // Deprecated
+  bool presentInSet(NodeID element) const { return isElement(element); }  // Deprecated
+
+  void print(ostream& out) const;
+private:
+  // Private Methods
+
+  // Data Members (m_ prefix)
+  int m_size;
+  uint32 m_bits;  // Set as a bit vector
+  uint32 m_mask;  // a 000001111 mask where the number of 1s is equal to m_size
+
+};
+
+// Output operator declaration
+ostream& operator<<(ostream& out, const Set& obj);
+
+// ******************* Definitions *******************
+
+// Output operator definition
+extern inline
+ostream& operator<<(ostream& out, const Set& obj)
+{
+  obj.print(out);
+  out << flush;
+  return out;
+}
+
+#endif //SET_H
+#endif //BIGSET
+#endif //OPTBIGSET
+