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diff --git a/src/mem/ruby/tester/RaceyDriver.hh b/src/mem/ruby/tester/RaceyDriver.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.
+ */
+
+/*
+ * $Id$
+ *
+ * Description: The driver interface between racey pseudo threads and ruby
+ *              memory timing simulator.
+ *
+ */
+
+#ifndef RACEYDRIVER_H
+#define RACEYDRIVER_H
+
+#include "Global.hh"
+#include "Driver.hh"
+
+class RaceyPseudoThread;
+
+class RaceyDriver : public Driver, public Consumer {
+public:
+  // Constructors
+  RaceyDriver();
+
+  // Destructor
+  ~RaceyDriver();
+
+  // Public Methods
+  int runningThreads();
+  void registerThread0Wakeup();
+  void joinThread();
+  bool Thread0Initialized() {
+    return m_racey_pseudo_threads[0]->getInitializedState();
+  };
+
+  void hitCallback(NodeID proc, SubBlock& data, CacheRequestType type, int thread);
+  void wakeup();
+  void printStats(ostream& out) const;
+  void clearStats() {}
+  void printConfig(ostream& out) const {}
+
+  integer_t getInstructionCount(int procID) const;
+
+  // save/load cpu states
+  void saveCPUStates(int cpu_id, string filename) {
+    m_racey_pseudo_threads[cpu_id]->saveCPUStates(filename);
+  };
+  void loadCPUStates(int cpu_id, string filename) {
+    m_racey_pseudo_threads[cpu_id]->loadCPUStates(filename);
+  };
+
+  // reset IC
+  void resetIC(int cpu_id) {
+    m_racey_pseudo_threads[cpu_id]->resetIC();
+  }
+
+  void print(ostream& out) const;
+private:
+
+  // Private copy constructor and assignment operator
+  RaceyDriver(const RaceyDriver& obj);
+  RaceyDriver& operator=(const RaceyDriver& obj);
+
+  // Data Members (m_ prefix)
+  Vector<RaceyPseudoThread*> m_racey_pseudo_threads;
+  int m_done_counter;
+  bool m_wakeup_thread0;
+
+  Time m_finish_time;
+};
+
+// Output operator declaration
+ostream& operator<<(ostream& out, const RaceyDriver& obj);
+
+// ******************* Definitions *******************
+
+// Output operator definition
+extern inline
+ostream& operator<<(ostream& out, const RaceyDriver& obj)
+{
+  obj.print(out);
+  out << flush;
+  return out;
+}
+
+#endif //RACEYDRIVER_H