82 строки
2.7 KiB
C
82 строки
2.7 KiB
C
/*
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* Copyright (c) 2004-2005 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) 2004-2006 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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* $COPYRIGHT$
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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 "opal/util/show_help.h"
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#include "ompi/mpi/c/bindings.h"
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#include "ompi/constants.h"
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#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Init_thread = PMPI_Init_thread
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#endif
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#if OMPI_PROFILING_DEFINES
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#include "ompi/mpi/c/profile/defines.h"
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#endif
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static const char FUNC_NAME[] = "MPI_Init_thread";
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int MPI_Init_thread(int *argc, char ***argv, int required,
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int *provided)
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{
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int err;
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MPI_Comm null = NULL;
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/*
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* A thread compliant MPI implementation will be able to return provided
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* = MPI_THREAD_MULTIPLE. Such an implementation may always return provided
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* = MPI_THREAD_MULTIPLE, irrespective of the value of required.
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*/
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#if OMPI_ENABLE_MPI_THREADS
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*provided = MPI_THREAD_MULTIPLE;
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#else
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*provided = MPI_THREAD_SINGLE;
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#endif
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/* Ensure that we were not already initialized or finalized */
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if (ompi_mpi_finalized) {
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if (0 == ompi_comm_rank(MPI_COMM_WORLD)) {
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opal_show_help("help-mpi-api.txt", "mpi-function-after-finalize",
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true, FUNC_NAME);
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}
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return ompi_errhandler_invoke(NULL, NULL, OMPI_ERRHANDLER_TYPE_COMM,
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MPI_ERR_OTHER, FUNC_NAME);
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} else if (ompi_mpi_initialized) {
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if (0 == ompi_comm_rank(MPI_COMM_WORLD)) {
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opal_show_help("help-mpi-api.txt", "mpi-initialize-twice",
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true, FUNC_NAME);
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}
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_OTHER, FUNC_NAME);
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}
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/* Call the back-end initialization function (we need to put as
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little in this function as possible so that if it's profiled, we
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don't lose anything) */
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if (NULL != argc && NULL != argv) {
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err = ompi_mpi_init(*argc, *argv, required, provided);
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} else {
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err = ompi_mpi_init(0, NULL, required, provided);
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}
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OMPI_ERRHANDLER_RETURN(err, null, err, FUNC_NAME);
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}
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