group_incl.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 (c) 2006      University of Houston. All rights reserved.
 * $COPYRIGHT$
 * 
 * Additional copyrights may follow
 * 
 * $HEADER$
 */
#include "ompi_config.h"
#include <stdio.h>

#include "ompi/mpi/c/bindings.h"
#include "ompi/group/group.h"
#include "ompi/errhandler/errhandler.h"
#include "ompi/communicator/communicator.h"
#include "ompi/proc/proc.h"

#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Group_incl = PMPI_Group_incl
#endif

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

static const char FUNC_NAME[] = "MPI_Group_incl";


int MPI_Group_incl(MPI_Group group, int n, int *ranks, MPI_Group *new_group) 
{
  int i, group_size, err;
  ompi_group_t *group_pointer;

  group_pointer = (ompi_group_t *)group;
  group_size = ompi_group_size ( group_pointer );

  if( MPI_PARAM_CHECK ) {
    OMPI_ERR_INIT_FINALIZE(FUNC_NAME);

    /* verify that group is valid group */
    if ( (MPI_GROUP_NULL == group) || ( NULL == group) 
            || NULL == ranks ) {
        return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_GROUP,
                                          FUNC_NAME);
    }

    /* check that new group is no larger than old group */
    if ( n > group_size ) {
        return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_RANK,
                                      FUNC_NAME);
    }

    for (i = 0; i < n; i++) {
	if ((ranks[i] < 0) || (ranks[i] >= group_size)){
	    return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_RANK, 
					   FUNC_NAME);
	}
    }    
  }  /* end if( MPI_CHECK_ARGS) */

  if ( 0 == n ) {
      *new_group = MPI_GROUP_EMPTY;
      OBJ_RETAIN(MPI_GROUP_EMPTY);
      return MPI_SUCCESS;
  }

  err = ompi_group_incl(group,n,ranks,new_group);
  OMPI_ERRHANDLER_RETURN(err, MPI_COMM_WORLD,err,FUNC_NAME);
}