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snl_fei_BlkSizeMsgHandler.hpp
00001 /*
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00004 //             FEI: Finite Element Interface to Linear Solvers
00005 //                  Copyright (2005) Sandia Corporation.
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00007 // Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation, the
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00009 //
00010 // Redistribution and use in source and binary forms, with or without
00011 // modification, are permitted provided that the following conditions are
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00013 //
00014 // 1. Redistributions of source code must retain the above copyright
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00016 //
00017 // 2. Redistributions in binary form must reproduce the above copyright
00018 // notice, this list of conditions and the following disclaimer in the
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00020 //
00021 // 3. Neither the name of the Corporation nor the names of the
00022 // contributors may be used to endorse or promote products derived from
00023 // this software without specific prior written permission.
00024 //
00025 // THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
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00041 */
00042 
00043 
00044 #ifndef _snl_fei_BlkSizeMsgHandler_hpp_
00045 #define _snl_fei_BlkSizeMsgHandler_hpp_
00046 
00047 #include <fei_macros.hpp>
00048 #include <fei_SharedPtr.hpp>
00049 #include <fei_VectorSpace.hpp>
00050 #include <fei_Graph.hpp>
00051 #include <fei_CommUtils.hpp>
00052 
00053 namespace snl_fei {
00054 
00056 class BlkSizeMsgHandler : public fei::MessageHandler<int> {
00057  public:
00059   BlkSizeMsgHandler(fei::VectorSpace* vspace,
00060         fei::Graph* graph,
00061         MPI_Comm comm);
00063   virtual ~BlkSizeMsgHandler();
00064 
00066   int do_the_exchange();
00067 
00069   std::vector<int>& getSendProcs();
00071   std::vector<int>& getRecvProcs();
00072 
00074   int getSendMessageLength(int destProc, int& messageLength);
00076   int getSendMessage(int destProc, std::vector<int>& message);
00078   int processRecvMessage(int srcProc, std::vector<int>& message);
00079 
00080  private:
00081   fei::comm_map* remote_colIndices_;
00082   fei::comm_map* local_colIndices_;
00083   fei::VectorSpace* vecSpace_;
00084   snl_fei::PointBlockMap* ptBlkMap_;
00085   fei::Graph* graph_;
00086   MPI_Comm comm_;
00087   std::vector<int> sendProcs_;
00088   std::vector<int> recvProcs_;
00089 
00090   bool firstExchange_;
00091 };
00092 
00093 } // namespace snl_fei
00094 
00095 #endif
00096 
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