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/*
* 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) 2004-2008 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) 2007-2009 Cisco Systems, Inc. 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/memchecker.h"
#if OPAL_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Comm_get_errhandler = PMPI_Comm_get_errhandler
#endif
#if OMPI_PROFILING_DEFINES
#include "ompi/mpi/c/profile/defines.h"
#endif
static const char FUNC_NAME[] = "MPI_Comm_get_errhandler";
int MPI_Comm_get_errhandler(MPI_Comm comm, MPI_Errhandler *errhandler)
{
MPI_Errhandler tmp;
/* Error checking */
MEMCHECKER(
memchecker_comm(comm);
);
OPAL_CR_NOOP_PROGRESS();
/* Error checking */
if (MPI_PARAM_CHECK) {
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
if (ompi_comm_invalid(comm)) {
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM,
FUNC_NAME);
} else if (NULL == errhandler) {
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG,
FUNC_NAME);
}
}
/* On 64 bits environments we have to make sure the reading of the
error_handler became atomic. */
do {
tmp = comm->error_handler;
} while (!OPAL_ATOMIC_CMPSET(&(comm->error_handler), tmp, tmp));
/* Retain the errhandler, corresponding to object refcount decrease
in errhandler_free.c. */
*errhandler = tmp;
OBJ_RETAIN(tmp);
/* All done */
return MPI_SUCCESS;
}
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