openmpi/ompi/mpi/c/attr_get.c

/*
 * Copyright (c) 2004-2005 The Trustees of Indiana University.
 *                         All rights reserved.
 * Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
 *                         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 <stdio.h>

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

#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Attr_get = PMPI_Attr_get
#endif

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

static const char FUNC_NAME[] = "MPI_Attr_get";

int MPI_Attr_get(MPI_Comm comm, int keyval, void *attribute_val, int *flag)
{
    int ret;

    if (MPI_PARAM_CHECK) {
        OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
	if ((NULL == attribute_val) || (NULL == flag)) {
	    return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG, 
					 FUNC_NAME);
	}
    }
        
    /* This stuff is very confusing.  Be sure to see
       src/attribute/attribute.c for a lengthy comment explaining Open
       MPI attribute behavior. */

    ret = ompi_attr_get_c(comm->c_keyhash, keyval, attribute_val, flag);
    OMPI_ERRHANDLER_RETURN(ret, comm, ret, FUNC_NAME);
}