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diff --git a/src/mem/ruby/network/garnet-flexible-pipeline/flitBuffer.hh b/src/mem/ruby/network/garnet-flexible-pipeline/flitBuffer.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.
+ */
+
+/*
+ * flitBuffer.h
+ *
+ * Niket Agarwal, Princeton University
+ *
+ * */
+
+#ifndef FLIT_BUFFER_H
+#define FLIT_BUFFER_H
+
+#include "NetworkHeader.hh"
+#include "PrioHeap.hh"
+#include "flit.hh"
+
+class flitBuffer {
+public:
+        flitBuffer();
+        flitBuffer(int maximum_size);
+
+        bool isReady();
+        bool isReadyForNext();
+        bool isFull();
+        bool isEmpty();
+        void setMaxSize(int maximum);
+        flit *getTopFlit();
+        flit *peekTopFlit();
+        void insert(flit *flt);
+        void print(ostream& out) const;
+
+/**********Data Members*********/
+private:
+        PrioHeap <flit *> m_buffer;
+        int size, max_size;
+};
+
+ostream& operator<<(ostream& out, const flitBuffer& obj);
+
+// ******************* Definitions *******************
+
+// Output operator definition
+extern inline
+ostream& operator<<(ostream& out, const flitBuffer& obj)
+{
+  obj.print(out);
+  out << flush;
+  return out;
+}
+
+#endif
+