type_vector.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_vector = PMPI_Type_vector
#endif

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

static const char FUNC_NAME[] = "MPI_Type_vector";

int MPI_Type_vector(int count,
                    int blocklength,
                    int stride,
                    MPI_Datatype oldtype,
                    MPI_Datatype *newtype)
{
   int rc;

   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 ) {
         OMPI_ERRHANDLER_RETURN( MPI_ERR_COUNT, MPI_COMM_WORLD,
                                MPI_ERR_COUNT, FUNC_NAME );
      } else if( blocklength < 0) {
         OMPI_ERRHANDLER_RETURN( MPI_ERR_ARG, MPI_COMM_WORLD,
                                MPI_ERR_ARG, FUNC_NAME );
      }
   }

   rc = ompi_ddt_create_vector ( count, blocklength, stride, oldtype, newtype );
   OMPI_ERRHANDLER_CHECK(rc, MPI_COMM_WORLD, rc, FUNC_NAME );

   {
      int* a_i[3];
      a_i[0] = &count;
      a_i[1] = &blocklength;
      a_i[2] = &stride;

      ompi_ddt_set_args( *newtype, 3, a_i, 0, NULL, 1, &oldtype, MPI_COMBINER_VECTOR );
   }
   return MPI_SUCCESS;
}