79 строки
2.8 KiB
C
79 строки
2.8 KiB
C
/*
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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) 2015 Research Organization for Information Science
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* and Technology (RIST). All rights reserved.
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* Copyright (c) 2015 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2015 Intel, Inc. 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 "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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#if OMPI_BUILD_MPI_PROFILING
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#if OPAL_HAVE_WEAK_SYMBOLS
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#pragma weak MPI_Initialized = PMPI_Initialized
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#endif
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#define MPI_Initialized PMPI_Initialized
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#endif
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static const char FUNC_NAME[] = "MPI_Initialized";
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int MPI_Initialized(int *flag)
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{
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OPAL_CR_NOOP_PROGRESS();
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/* We must obtain the lock to guarnatee consistent values of
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ompi_mpi_initialized and ompi_mpi_finalized. Note, too, that
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this lock is held for the bulk of the duration of
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ompi_mpi_init() and ompi_mpi_finalize(), so when we get the
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lock, we are guaranteed that some other thread is not part way
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through initialization or finalization. */
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opal_mutex_lock(&ompi_mpi_bootstrap_mutex);
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if (MPI_PARAM_CHECK) {
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if (NULL == flag) {
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/* If we have an error, the action that we take depends on
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whether we're currently (after MPI_Init and before
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MPI_Finalize) or not */
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if (ompi_mpi_initialized && !ompi_mpi_finalized) {
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opal_mutex_unlock(&ompi_mpi_bootstrap_mutex);
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG,
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FUNC_NAME);
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} else {
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opal_mutex_unlock(&ompi_mpi_bootstrap_mutex);
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/* We have no MPI object here so call ompi_errhandle_invoke
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* directly */
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return ompi_errhandler_invoke(NULL, NULL, -1,
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ompi_errcode_get_mpi_code(MPI_ERR_ARG),
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FUNC_NAME);
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}
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}
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}
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*flag = ompi_mpi_initialized;
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opal_mutex_unlock(&ompi_mpi_bootstrap_mutex);
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return MPI_SUCCESS;
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}
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