Merge Ruby Stuff

1 files changed, 162 insertions, 0 deletions

diff --git a/src/mem/gems_common/RefCnt.hh b/src/mem/gems_common/RefCnt.hh
new file mode 100644
index 000000000..fc1ddbae9
--- /dev/null
+++ b/src/mem/gems_common/RefCnt.hh
@@ -0,0 +1,162 @@
+/*
+ * 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.
+ */
+
+#ifndef REFCNT_H
+#define REFCNT_H
+
+template <class TYPE>
+class RefCnt {
+public:
+  // Constructors
+  RefCnt();
+  RefCnt(const TYPE& data);
+
+  // Destructor
+  ~RefCnt();
+
+  // Public Methods
+  const TYPE* ref() const { return m_data_ptr; }
+  TYPE* ref() { return m_data_ptr; }
+  TYPE* mod_ref() const { return m_data_ptr; }
+  void freeRef();
+  void print(ostream& out) const;
+
+  // Public copy constructor and assignment operator
+  RefCnt(const RefCnt& obj);
+  RefCnt& operator=(const RefCnt& obj);
+
+private:
+  // Private Methods
+
+  // Data Members (m_ prefix)
+  TYPE* m_data_ptr;
+  //  int* m_count_ptr; // Not used yet
+};
+
+// Output operator declaration
+template <class TYPE>
+inline
+ostream& operator<<(ostream& out, const RefCnt<TYPE>& obj);
+
+// ******************* Definitions *******************
+
+// Constructors
+template <class TYPE>
+inline
+RefCnt<TYPE>::RefCnt()
+{
+  m_data_ptr = NULL;
+}
+
+template <class TYPE>
+inline
+RefCnt<TYPE>::RefCnt(const TYPE& data)
+{
+  m_data_ptr = data.clone();
+  m_data_ptr->setRefCnt(1);
+}
+
+template <class TYPE>
+inline
+RefCnt<TYPE>::~RefCnt()
+{
+  freeRef();
+}
+
+template <class TYPE>
+inline
+void RefCnt<TYPE>::freeRef()
+{
+  if (m_data_ptr != NULL) {
+    m_data_ptr->decRefCnt();
+    if (m_data_ptr->getRefCnt() == 0) {
+      m_data_ptr->destroy();
+    }
+    m_data_ptr = NULL;
+  }
+}
+
+template <class TYPE>
+inline
+void RefCnt<TYPE>::print(ostream& out) const
+{
+  if (m_data_ptr == NULL) {
+    out << "[RefCnt: Null]";
+  } else {
+    out << "[RefCnt: ";
+    m_data_ptr->print(out);
+    out << "]";
+  }
+}
+
+// Copy constructor
+template <class TYPE>
+inline
+RefCnt<TYPE>::RefCnt(const RefCnt<TYPE>& obj)
+{
+  //  m_data_ptr = obj.m_data_ptr->clone();
+  m_data_ptr = obj.m_data_ptr;
+
+  // Increment the reference count
+  if (m_data_ptr != NULL) {
+    m_data_ptr->incRefCnt();
+  }
+}
+
+// Assignment operator
+template <class TYPE>
+inline
+RefCnt<TYPE>& RefCnt<TYPE>::operator=(const RefCnt<TYPE>& obj)
+{
+  if (this == &obj) {
+    // If this is the case, do nothing
+    //    assert(false);
+  } else {
+    freeRef();
+    m_data_ptr = obj.m_data_ptr;
+    if (m_data_ptr != NULL) {
+      m_data_ptr->incRefCnt();
+    }
+  }
+  return *this;
+}
+
+
+// Output operator definition
+template <class TYPE>
+inline
+ostream& operator<<(ostream& out, const RefCnt<TYPE>& obj)
+{
+  obj.print(out);
+  out << flush;
+  return out;
+}
+
+
+
+#endif //REFCNT_H