1 files changed, 59 insertions, 0 deletions
diff --git a/src/mem/gems_common/RefCountable.hh b/src/mem/gems_common/RefCountable.hh
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+++ b/src/mem/gems_common/RefCountable.hh
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+/*
+ * Copyright (c) 1999-2005 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.
+ */
+
+/*
+ * Virtual base class for things that can be reference counted
+ */
+
+#ifndef REFCOUNTABLE_H
+#define REFCOUNTABLE_H
+
+#include "RefCnt.hh"
+
+class RefCountable {
+public:
+  // Public Methods
+
+  RefCountable() { m_refcnt = 0; }
+
+  // These are used by the RefCnt class to hold the reference count
+  // for the object.  These really should be private and accessed by a
+  // friend class, but I can't figure out how to make a template class
+  // a friend.
+  void incRefCnt() { m_refcnt++; }
+  void decRefCnt() { m_refcnt--; }
+  int getRefCnt() const { return m_refcnt; }
+  void setRefCnt(int cnt) { m_refcnt = cnt; }
+private:
+  // Private Methods
+
+  // Data Members (m_ prefix)
+  int m_refcnt;
+};
+
+#endif //REFCOUNTABLE_H