/*
 * 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 <stdio.h>

#include "ompi/include/constants.h"
#include "opal/event/event.h"
#include "mca/mca.h"
#include "mca/base/base.h"
#include "mca/pml/pml.h"
#include "mca/ptl/ptl.h"
#include "mca/ptl/base/base.h"

extern int mca_ptl_base_open_called;

int mca_ptl_base_close(void)
{
    opal_list_item_t *item;
    mca_ptl_base_selected_module_t *sm;

    if( 0 == mca_ptl_base_open_called ) return OMPI_ERROR;
    mca_ptl_base_open_called = 0;

    /* disable event processing while cleaning up ptls */
    opal_event_disable();

    /* Finalize all the ptl components and free their list items */

    for (item = opal_list_remove_first(&mca_ptl_base_modules_initialized);
         NULL != item; 
         item = opal_list_remove_first(&mca_ptl_base_modules_initialized)) {
        sm = (mca_ptl_base_selected_module_t *) item;

        /* Blatently ignore the return code (what would we do to recover,
           anyway?  This component is going away, so errors don't matter
           anymore) */

        sm->pbsm_module->ptl_finalize(sm->pbsm_module);
        free(sm);
    }

    /* Close all remaining opened components (may be one if this is a
       OMPI RTE program, or [possibly] multiple if this is ompi_info) */

    if (0 != opal_list_get_size(&mca_ptl_base_components_initialized)) {
        mca_base_components_close(mca_ptl_base_output, 
                                  &mca_ptl_base_components_initialized, NULL);
    }
    OBJ_DESTRUCT( &mca_ptl_base_components_initialized );
    OBJ_DESTRUCT( &mca_ptl_base_components_opened );

    /* cleanup */
    if( NULL != mca_ptl_base_include ) {
        free(mca_ptl_base_include);
        mca_ptl_base_include = NULL;
    }
    if( NULL != mca_ptl_base_exclude ) {
        free(mca_ptl_base_exclude);
        mca_ptl_base_exclude = NULL;
    }

    /* restore event processing */
    opal_event_enable();

    /* All done */
    return OMPI_SUCCESS;
}