3ff34af355
This commit renames the atomic compare-and-swap functions to indicate the return value. This is in preperation for adding support for a compare-and-swap that returns the old value. At the same time the return type has been changed to bool. Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
82 строки
2.6 KiB
C
82 строки
2.6 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2008 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2015 Research Organization for Information Science
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* and Technology (RIST). All rights reserved.
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* Copyright (c) 2016 Los Alamos National Security, LLC. All rights
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* reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include "ompi/mpi/c/bindings.h"
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#include "ompi/runtime/params.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/errhandler/errhandler.h"
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#include "ompi/file/file.h"
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#if OMPI_BUILD_MPI_PROFILING
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#if OPAL_HAVE_WEAK_SYMBOLS
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#pragma weak MPI_File_get_errhandler = PMPI_File_get_errhandler
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#endif
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#define MPI_File_get_errhandler PMPI_File_get_errhandler
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#endif
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static const char FUNC_NAME[] = "MPI_File_get_errhandler";
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int MPI_File_get_errhandler( MPI_File file, MPI_Errhandler *errhandler)
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{
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MPI_Errhandler tmp;
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OPAL_CR_NOOP_PROGRESS();
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/* Error checking */
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if (MPI_PARAM_CHECK) {
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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/* Note that MPI-2:9.7 (p265 in the ps; 261 in the pdf) explicitly
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says that you are allowed to set the error handler on
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MPI_FILE_NULL */
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if (NULL == file) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_FILE,
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"MPI_File_get_errhandler");
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} else if (NULL == errhandler) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG,
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"MPI_File_get_errhandler");
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}
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}
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/* On 64 bits environments we have to make sure the reading of the
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error_handler became atomic. */
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do {
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tmp = file->error_handler;
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} while (!OPAL_ATOMIC_BOOL_CMPSET_PTR(&(file->error_handler), tmp, tmp));
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/* Retain the errhandler, corresponding to object refcount
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decrease in errhandler_free.c. */
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*errhandler = tmp;
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OBJ_RETAIN(tmp);
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/* All done */
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return MPI_SUCCESS;
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}
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