type_indexed.c

MPI stands for the Message Passing Interface. Written by the MPI Forum (a large committee comprising

/*
 * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
 *                         University Research and Technology
 *                         Corporation.  All rights reserved.
 * Copyright (c) 2004-2005 The University of Tennessee and The University
 *                         of Tennessee Research Foundation.  All rights
 *                         reserved.
 * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart, 
 *                         University of Stuttgart.  All rights reserved.
 * Copyright (c) 2004-2005 The Regents of the University of California.
 *                         All rights reserved.
 * $COPYRIGHT$
 * 
 * Additional copyrights may follow
 * 
 * $HEADER$
 */

#include "ompi_config.h"

#include "ompi/mpi/c/bindings.h"
#include "ompi/datatype/datatype.h"

#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Type_indexed = PMPI_Type_indexed
#endif

#if OMPI_PROFILING_DEFINES
#include "ompi/mpi/c/profile/defines.h"
#endif

static const char FUNC_NAME[] = "MPI_Type_indexed";

int MPI_Type_indexed(int count,
                     int array_of_blocklengths[],
                     int array_of_displacements[],
                     MPI_Datatype oldtype,
                     MPI_Datatype *newtype)
{
   int rc, i;

   if( MPI_PARAM_CHECK ) {
      OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
      if (NULL == oldtype || MPI_DATATYPE_NULL == oldtype ||
          NULL == newtype) {
        return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_TYPE,
                                      FUNC_NAME);
      } else if( count < 0 ) {
        return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COUNT,
                                      FUNC_NAME);
      } else if (NULL == array_of_blocklengths ||
                 NULL == array_of_displacements) {
        return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG,
                                      FUNC_NAME);
      }
      for( i = 0; i < count; i++ ) {
         if( array_of_blocklengths[i] < 0 ) {
           return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG,
                                         FUNC_NAME);
         }
      }
   }

   rc = ompi_ddt_create_indexed ( count, array_of_blocklengths, 
                                 array_of_displacements,
                                 oldtype, newtype );
   if( rc != MPI_SUCCESS ) {
      ompi_ddt_destroy( newtype );
      OMPI_ERRHANDLER_RETURN( rc, MPI_COMM_WORLD,
                             rc, FUNC_NAME );
   }

   {
      int* a_i[3];

      a_i[0] = &count;
      a_i[1] = array_of_blocklengths;
      a_i[2] = array_of_displacements;

      ompi_ddt_set_args( *newtype, 2 * count + 1, a_i, 0, NULL, 1, &oldtype,
                         MPI_COMBINER_INDEXED );
   }

   return MPI_SUCCESS;
}