56 строки
1.4 KiB
C
56 строки
1.4 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University.
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* All rights reserved.
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* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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* All rights 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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* $COPYRIGHT$
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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 "mpi.h"
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#include "mpi/c/bindings.h"
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#include "ompi/runtime/mpiruntime.h"
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#include "communicator/communicator.h"
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#include "errhandler/errhandler.h"
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#include "opal/threads/thread.h"
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#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Is_thread_main = PMPI_Is_thread_main
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#endif
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#if OMPI_PROFILING_DEFINES
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#include "mpi/c/profile/defines.h"
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#endif
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static const char FUNC_NAME[] = "MPI_Is_thread_main";
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int MPI_Is_thread_main(int *flag)
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{
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if (MPI_PARAM_CHECK) {
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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if (NULL == flag) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM, FUNC_NAME);
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}
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}
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/* Compare this thread ID to the main thread ID */
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#if OMPI_ENABLE_MPI_THREADS
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*flag = (int) opal_thread_self_compare(ompi_mpi_main_thread);
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#else
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*flag = 1;
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#endif
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return MPI_SUCCESS;
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}
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