/*
 * $HEADER$
 */

#include "ompi_config.h"

#include "include/constants.h"
#include "runtime/runtime.h"
#include "mpi.h"
#include "event/event.h"
#include "group/group.h"
#include "errhandler/errhandler.h"
#include "errhandler/errcode.h"
#include "errhandler/errclass.h"
#include "errhandler/errcode-internal.h"
#include "communicator/communicator.h"
#include "datatype/datatype.h"
#include "op/op.h"
#include "file/file.h"
#include "info/info.h"
#include "util/proc_info.h"
#include "runtime/runtime.h"
#include "runtime/ompi_progress.h"
#include "runtime/ompi_rte_wait.h"

#include "mca/base/base.h"
#include "mca/base/mca_base_module_exchange.h"
#include "mca/ptl/ptl.h"
#include "mca/ptl/base/base.h"
#include "mca/pml/pml.h"
#include "mca/pml/base/base.h"
#include "mca/coll/coll.h"
#include "mca/coll/base/base.h"
#include "mca/topo/topo.h"
#include "mca/topo/base/base.h"
#include "mca/io/io.h"
#include "mca/io/base/base.h"
#include "mca/oob/base/base.h"
#include "mca/ns/base/base.h"


int ompi_mpi_finalize(void)
{
  int ret;

  ompi_mpi_finalized = true;
#if OMPI_HAVE_THREADS == 0
  ompi_progress_events(OMPI_EVLOOP_ONCE);
#endif

  /* unregister process */
  if (OMPI_SUCCESS != (ret = ompi_registry.rte_unregister(
			     ns_base_get_proc_name_string(ompi_rte_get_self())))) {
      return ret;
  }

  /* wait for all processes to reach same state */
  if (OMPI_SUCCESS != (ret = ompi_rte_monitor_procs_unregistered())) {
      if (ompi_rte_debug_flag) {
	  ompi_output(0, "mpi_finalize: gave up waiting for other processes to complete");
      }
  }

  /* shutdown communications */
  if (OMPI_SUCCESS != (ret = mca_ptl_base_close())) {
    return ret;
  }
  if (OMPI_SUCCESS != (ret = mca_pml_base_close())) {
    return ret;
  }

  /* Shut down any bindings-specific issues: C++, F77, F90 (may or
     may not be necessary...?) */

  /* Free communication objects */

  /* free window resources */

  /* free file resources */
  if (OMPI_SUCCESS != (ret = ompi_file_finalize())) {
    return ret;
  }

  /* free communicator resources */
  if (OMPI_SUCCESS != (ret = ompi_comm_finalize())) {
      return ret;
  }

  /* free requests */
  if (OMPI_SUCCESS != (ret = ompi_request_finalize())) {
      return ret;
  }

  /* Free secondary resources */

  /* free attr resources */
  if (OMPI_SUCCESS != (ret = ompi_attr_finalize())) {
      return ret;
  }

  /* free group resources */
  if (OMPI_SUCCESS != (ret = ompi_group_finalize())) {
      return ret;
  }

  /* free internal error resources */
  if (OMPI_SUCCESS != (ret = ompi_errcode_intern_finalize())) {
      return ret;
  }
     
  /* free error class resources */
  if (OMPI_SUCCESS != (ret = ompi_errclass_finalize())) {
      return ret;
  }

  /* free error code resources */
  if (OMPI_SUCCESS != (ret = ompi_mpi_errcode_finalize())) {
      return ret;
  }

  /* free errhandler resources */
  if (OMPI_SUCCESS != (ret = ompi_errhandler_finalize())) {
      return ret;
  }

  /* Free all other resources */

  /* free op resources */
  if (OMPI_SUCCESS != (ret = ompi_op_finalize())) {
      return ret;
  }

  /* free ddt resources */
  if (OMPI_SUCCESS != (ret = ompi_ddt_finalize())) {
      return ret;
  }

  /* free info resources */
  if (OMPI_SUCCESS != (ret = ompi_info_finalize())) {
      return ret;
  }

  /* free module exchange resources */
  if (OMPI_SUCCESS != (ret = mca_base_modex_finalize())) {
      return ret;
  }

  /* Close down MCA modules */

  if (OMPI_SUCCESS != (ret = mca_io_base_close())) {
    return ret;
  }
  if (OMPI_SUCCESS != (ret = mca_topo_base_close())) {
    return ret;
  }
  if (OMPI_SUCCESS != (ret = mca_coll_base_close())) {
    return ret;
  }

  /* Leave the RTE */

  if (OMPI_SUCCESS != (ret = ompi_rte_finalize())) {
    return ret;
  }

  /* Close down the MCA */

  if (OMPI_SUCCESS != (ret = mca_base_close())) {
    return ret;
  }
      
  /* Leave OMPI land */

  if (OMPI_SUCCESS != (ret = ompi_finalize())) {
    return ret;
  }
      
  /* All done */

  return MPI_SUCCESS;
}