Sacado_Fad_MemPool.hpp

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00001 // $Id$ 
00002 // $Source$ 
00003 // @HEADER
00004 // ***********************************************************************
00005 // 
00006 //                           Sacado Package
00007 //                 Copyright (2006) Sandia Corporation
00008 // 
00009 // Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
00010 // the U.S. Government retains certain rights in this software.
00011 // 
00012 // This library is free software; you can redistribute it and/or modify
00013 // it under the terms of the GNU Lesser General Public License as
00014 // published by the Free Software Foundation; either version 2.1 of the
00015 // License, or (at your option) any later version.
00016 //  
00017 // This library is distributed in the hope that it will be useful, but
00018 // WITHOUT ANY WARRANTY; without even the implied warranty of
00019 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00020 // Lesser General Public License for more details.
00021 //  
00022 // You should have received a copy of the GNU Lesser General Public
00023 // License along with this library; if not, write to the Free Software
00024 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00025 // USA
00026 // Questions? Contact David M. Gay (dmgay@sandia.gov) or Eric T. Phipps
00027 // (etphipp@sandia.gov).
00028 // 
00029 // ***********************************************************************
00030 // @HEADER
00031 
00032 #ifndef SACADO_FAD_MEMPOOL_HPP
00033 #define SACADO_FAD_MEMPOOL_HPP
00034 
00035 namespace Sacado {
00036 
00037   namespace Fad {
00038 
00040     class MemPool {
00041 
00042     public:
00043 
00049       MemPool(unsigned int elem_size, unsigned int n_elem, 
00050         unsigned int pre_alloc = 0);
00051 
00053       ~MemPool();
00054 
00056       void* alloc();
00057 
00059       void free(void *b);
00060 
00062       unsigned int numChunks() const { return num_chunks; }
00063 
00064     private:
00065       
00067       MemPool(const MemPool&);
00068 
00070       MemPool& operator=(const MemPool&);
00071 
00073       inline void grow();
00074 
00075     protected:
00076 
00078       struct Link { 
00079   Link* next; 
00080       };
00081 
00083       struct Chunk {
00084   Chunk *next;
00085   char *mem;
00086   //~Chunk() { delete [] mem; }
00087       };
00088 
00090       const unsigned int esize;
00091 
00093       const unsigned int n;
00094 
00096       const unsigned int csize;
00097 
00099       Chunk *chunks;
00100 
00102       Link *head;
00103 
00105       unsigned int num_chunks;
00106     };
00107 
00108   } // namespace Fad
00109 
00110 } // namespace Sacado
00111 
00112 // Include implementation
00113 #include "Sacado_Fad_MemPoolImp.hpp"
00114 
00115 #endif // SACADO_FAD_MEMPOOL_HPP
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