Teuchos - Trilinos Tools Package Version of the Day
Teuchos_GlobalMPISession.hpp
Go to the documentation of this file.
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 // Redistribution and use in source and binary forms, with or without
00011 // modification, are permitted provided that the following conditions are
00012 // met:
00013 //
00014 // 1. Redistributions of source code must retain the above copyright
00015 // notice, this list of conditions and the following disclaimer.
00016 //
00017 // 2. Redistributions in binary form must reproduce the above copyright
00018 // notice, this list of conditions and the following disclaimer in the
00019 // documentation and/or other materials provided with the distribution.
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
00026 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00027 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
00028 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
00029 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00030 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00031 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00032 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00033 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00034 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00035 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00036 //
00037 // Questions? Contact Michael A. Heroux (maherou@sandia.gov)
00038 //
00039 // ***********************************************************************
00040 // @HEADER
00041 
00042 #ifndef TEUCHOS_GLOBAL_MPI_SESSION_HPP
00043 #define TEUCHOS_GLOBAL_MPI_SESSION_HPP
00044 
00049 #include "Teuchos_ConfigDefs.hpp"
00050 
00051 #ifdef HAVE_MPI
00052 #include "mpi.h"
00053 #endif
00054 
00055 namespace Teuchos {
00056 
00065 class TEUCHOS_LIB_DLL_EXPORT GlobalMPISession
00066 {
00067 public:
00068   
00070 
00071   
00094   GlobalMPISession( int* argc, char*** argv, std::ostream *out = &std::cout );
00095   
00097   ~GlobalMPISession();
00098     
00100     
00102 
00103 
00105   static bool mpiIsInitialized();
00106 
00108   static bool mpiIsFinalized();
00109   
00118   static int getRank();
00119 
00129   static int getNProc();
00130   
00132   
00133 private:
00134   
00135   static bool haveMPIState_;
00136   static bool mpiIsFinalized_;
00137   static int rank_;
00138   static int nProc_;
00139 
00140   static void initialize( std::ostream *out );
00141 
00142 };
00143 
00144 } // namespace Teuchos
00145 
00146 #endif // TEUCHOS_GLOBAL_MPI_SESSION_HPP
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines