00001 /* @HEADER@ */ 00002 // ************************************************************************ 00003 // 00004 // Sundance 00005 // Copyright (2005) Sandia Corporation 00006 // 00007 // Copyright (year first published) Sandia Corporation. Under the terms 00008 // of Contract DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government 00009 // retains certain rights in this software. 00010 // 00011 // This library is free software; you can redistribute it and/or modify 00012 // it under the terms of the GNU Lesser General Public License as 00013 // published by the Free Software Foundation; either version 2.1 of the 00014 // License, or (at your option) any later version. 00015 // 00016 // This library is distributed in the hope that it will be useful, but 00017 // WITHOUT ANY WARRANTY; without even the implied warranty of 00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00019 // Lesser General Public License for more details. 00020 // 00021 // You should have received a copy of the GNU Lesser General Public 00022 // License along with this library; if not, write to the Free Software 00023 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 00024 // USA 00025 // Questions? Contact Kevin Long (krlong@sandia.gov), 00026 // Sandia National Laboratories, Livermore, California, USA 00027 // 00028 // ************************************************************************ 00029 /* @HEADER@ */ 00030 00031 #ifndef SUNDANCE_FILEIO_CHACOPARTITIONER_H 00032 #define SUNDANCE_FILEIO_CHACOPARTITIONER_H 00033 00034 #include "SundanceDefs.hpp" 00035 #include "SundanceMesh.hpp" 00036 #include "SundanceSerialPartitionerBase.hpp" 00037 #include "PlayaHandle.hpp" 00038 00039 namespace Sundance 00040 { 00041 /** 00042 * This partitioner makes a system call to run Chaco, passing partitioning 00043 * information to it through file IO. 00044 */ 00045 class FileIOChacoPartitioner : public SerialPartitionerBase 00046 { 00047 public: 00048 00049 /** Construct an empty mesh filter object */ 00050 FileIOChacoPartitioner(const std::string& filename, 00051 bool ignoreGhosts=false); 00052 00053 00054 00055 /** */ 00056 virtual void getAssignments(const Mesh& mesh, int np, 00057 Array<int>& assignments) const ; 00058 00059 /** */ 00060 void writeGraph(const Mesh& mesh) const ; 00061 00062 /** */ 00063 void runChaco(int np) const ; 00064 00065 private: 00066 00067 /** Determine whether a line is empty */ 00068 bool isEmptyLine(const std::string& x) const ; 00069 00070 /** 00071 * Read the next non-empty, non-comment line from a stream 00072 * @param is the stream from which to get the line 00073 * @param line upon return, filled in with the line that was read 00074 * @param tokens array of space-separated tokens in the line 00075 * @param comment a character indicating that everything after it 00076 * is a comment 00077 */ 00078 bool getNextLine(std::istream& is, std::string& line, 00079 Array<string>& tokens, 00080 char comment) const ; 00081 00082 std::string filename_; 00083 }; 00084 } 00085 00086 #endif