From 2f30950143cc70bc42a3c8a4111d7cf8198ec881 Mon Sep 17 00:00:00 2001
From: Nathan Binkert <nate@binkert.org>
Date: Mon, 11 May 2009 10:38:43 -0700
Subject: ruby: Import ruby and slicc from GEMS

We eventually plan to replace the m5 cache hierarchy with the GEMS
hierarchy, but for now we will make both live alongside eachother.
---
 src/mem/gems_common/Allocator.hh | 83 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 src/mem/gems_common/Allocator.hh

(limited to 'src/mem/gems_common/Allocator.hh')

diff --git a/src/mem/gems_common/Allocator.hh b/src/mem/gems_common/Allocator.hh
new file mode 100644
index 000000000..109696601
--- /dev/null
+++ b/src/mem/gems_common/Allocator.hh
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 1999 by Mark Hill and David Wood for the Wisconsin
+ * Multifacet Project.  ALL RIGHTS RESERVED.
+ *
+ * ##HEADER##
+ *
+ * This software is furnished under a license and may be used and
+ * copied only in accordance with the terms of such license and the
+ * inclusion of the above copyright notice.  This software or any
+ * other copies thereof or any derivative works may not be provided or
+ * otherwise made available to any other persons.  Title to and
+ * ownership of the software is retained by Mark Hill and David Wood.
+ * Any use of this software must include the above copyright notice.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS".  THE LICENSOR MAKES NO
+ * WARRANTIES ABOUT ITS CORRECTNESS OR PERFORMANCE.
+ * */
+
+/*
+ * $Id$
+ */
+
+#ifndef ALLOCATOR_H
+#define ALLOCATOR_H
+
+#include "Vector.hh"
+
+template <class TYPE>
+class Allocator {
+public:
+  // Constructors
+  Allocator() { m_counter = 0; }
+
+  // Destructor
+  ~Allocator() { for(int i=0; i<m_pool_vec.size(); i++) { delete m_pool_vec[i]; }}
+
+  // Public Methods
+  TYPE* allocate(const TYPE& obj);
+  void deallocate(TYPE* obj_ptr);
+private:
+  // Private copy constructor and assignment operator
+  Allocator(const Allocator& obj);
+  Allocator& operator=(const Allocator& obj);
+
+  // Private Methods
+
+  // Data Members (m_ prefix)
+  Vector<TYPE*> m_pool_vec;
+  int m_counter;
+};
+
+template <class TYPE>
+inline
+TYPE* Allocator<TYPE>::allocate(const TYPE& obj)
+{
+  m_counter++;
+  DEBUG_EXPR(ALLOCATOR_COMP, LowPrio, m_counter);
+  TYPE* new_obj_ptr;
+
+  // See if we need to allocate any new objects
+  if (m_pool_vec.size() == 0) {
+    // Allocate a new item
+    m_pool_vec.insertAtBottom(new TYPE);
+  }
+
+  // Pop the pointer from the stack/pool
+  int size = m_pool_vec.size();
+  new_obj_ptr = m_pool_vec[size-1];
+  m_pool_vec.setSize(size-1);
+
+  // Copy the object
+  *new_obj_ptr = obj;
+  return new_obj_ptr;
+}
+
+template <class TYPE>
+inline
+void Allocator<TYPE>::deallocate(TYPE* obj)
+{
+  m_pool_vec.insertAtBottom(obj);
+}
+
+#endif //ALLOCATOR_H
-- 
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