Sacado_Fad_MemPool.hpp

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// $Id$ 
// $Source$ 
// @HEADER
// ***********************************************************************
// 
//                           Sacado Package
//                 Copyright (2006) Sandia Corporation
// 
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
// 
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//  
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//  
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
// USA
// Questions? Contact David M. Gay (dmgay@sandia.gov) or Eric T. Phipps
// (etphipp@sandia.gov).
// 
// ***********************************************************************
// @HEADER
 
#ifndef SACADO_FAD_MEMPOOL_HPP
#define SACADO_FAD_MEMPOOL_HPP
 
namespace Sacado {
 
  namespace Fad {
 
    class MemPool {
 
    public:
 
      MemPool(unsigned int elem_size, unsigned int n_elem, 
        unsigned int pre_alloc = 0);
 
      ~MemPool();
 
      void* alloc();
 
      void free(void *b);
 
      unsigned int numChunks() const { return num_chunks; }
 
    private:
      
      MemPool(const MemPool&);
 
      MemPool& operator=(const MemPool&);
 
      inline void grow();
 
    protected:
 
      struct Link { 
  Link* next; 
      };
 
      struct Chunk {
  Chunk *next;
  char *mem;
  //~Chunk() { delete [] mem; }
      };
 
      const unsigned int esize;
 
      const unsigned int n;
 
      const unsigned int csize;
 
      Chunk *chunks;
 
      Link *head;
 
      unsigned int num_chunks;
    };
 
  } // namespace Fad
 
} // namespace Sacado
 
// Include implementation
#include "Sacado_Fad_MemPoolImp.hpp"
 
#endif // SACADO_FAD_MEMPOOL_HPP