/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
 * Copyright (c) 2004-2007 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) 2012-2013 Los Alamos National Security, LLC.  All rights
 *                         reserved. 
 * $COPYRIGHT$
 * 
 * Additional copyrights may follow
 * 
 * $HEADER$
 */
#include "ompi_config.h"
#include <stdio.h>

#include "ompi/mpi/c/bindings.h"
#include "ompi/runtime/params.h"
#include "ompi/communicator/communicator.h"
#include "ompi/errhandler/errhandler.h"
#include "ompi/info/info.h"
#include "ompi/mca/pubsub/pubsub.h"

#if OPAL_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Unpublish_name = PMPI_Unpublish_name
#endif

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

static const char FUNC_NAME[] = "MPI_Unpublish_name";


int MPI_Unpublish_name(const char *service_name, MPI_Info info,
                       const char *port_name)
{
    int rc;

    if ( MPI_PARAM_CHECK ) {
        OMPI_ERR_INIT_FINALIZE(FUNC_NAME); 

        if ( NULL == port_name ) {
            return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG, 
                                          FUNC_NAME);
        }
        if ( NULL == service_name ) {
            return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG, 
                                          FUNC_NAME);
        }
        if (NULL == info || ompi_info_is_freed(info)) {
            return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_INFO,
                                          FUNC_NAME);
        }
    }

    OPAL_CR_ENTER_LIBRARY();

    /* 
     * No predefined info-objects for this function in MPI-2,
     * therefore, we do not parse the info-object at the moment.
     */
    rc = ompi_pubsub.unpublish(service_name, info);
    if ( OMPI_SUCCESS != rc ) {
        if (OMPI_ERR_NOT_FOUND == rc) {
            /* service couldn't be found */
            OPAL_CR_EXIT_LIBRARY();
            return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_SERVICE,
                                          FUNC_NAME);
        }
        if (OMPI_ERR_PERM == rc) {
            /* this process didn't own the specified service */
            OPAL_CR_EXIT_LIBRARY();
            return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ACCESS,
                                          FUNC_NAME);
        }
        
        /* none of the MPI-specific errors occurred - must be some
         * kind of internal error
         */
        OPAL_CR_EXIT_LIBRARY();
        return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_INTERN,
                                      FUNC_NAME);
    }

    OPAL_CR_EXIT_LIBRARY();
    return MPI_SUCCESS;
}