Teuchos_ErrorPolling.cpp

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00001 // @HEADER
00002 // ***********************************************************************
00003 // 
00004 //                    Teuchos: Common Tools Package
00005 //                 Copyright (2004) Sandia Corporation
00006 // 
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 // 
00010 // This library is free software; you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as
00012 // published by the Free Software Foundation; either version 2.1 of the
00013 // License, or (at your option) any later version.
00014 //  
00015 // This library is distributed in the hope that it will be useful, but
00016 // WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //  
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00023 // USA
00024 // Questions? Contact Michael A. Heroux (maherou@sandia.gov) 
00025 // 
00026 // ***********************************************************************
00027 // @HEADER
00028 
00029 #include "Teuchos_ErrorPolling.hpp"
00030 #include "Teuchos_MPIComm.hpp"
00031 
00032 namespace Teuchos
00033 {
00034   void ErrorPolling::reportFailure(const MPIComm& comm)
00035   {
00036     if (isActive())
00037       {
00038         int myBad = 1;
00039         int anyBad = 0;
00040         comm.allReduce((void*) &myBad, (void*) &anyBad, 1, MPIComm::INT,
00041                        MPIComm::SUM);
00042       }
00043   }
00044 
00045   bool ErrorPolling::pollForFailures(const MPIComm& comm)
00046   {
00047     /* bypass if inactive */
00048     if (!isActive()) return true;
00049 
00050     int myBad = 0;
00051     int anyBad = 0;
00052     try
00053       {
00054         comm.allReduce((void*) &myBad, (void*) &anyBad, 1, MPIComm::INT,
00055                        MPIComm::SUM);
00056       }
00057     catch(const std::exception&)
00058       {
00059         return true;
00060       }
00061     return anyBad > 0;
00062   }
00063 }
00064 
00065 
00066 
00067   
00068 
00069 
00070 
00071 
00072 
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