root/ompi/mpi/c/is_thread_main.c

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DEFINITIONS

This source file includes following definitions.
  1. MPI_Is_thread_main

   1 /*
   2  * Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
   3  *                         University Research and Technology
   4  *                         Corporation.  All rights reserved.
   5  * Copyright (c) 2004-2005 The University of Tennessee and The University
   6  *                         of Tennessee Research Foundation.  All rights
   7  *                         reserved.
   8  * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
   9  *                         University of Stuttgart.  All rights reserved.
  10  * Copyright (c) 2004-2005 The Regents of the University of California.
  11  *                         All rights reserved.
  12  * Copyright (c) 2015      Research Organization for Information Science
  13  *                         and Technology (RIST). All rights reserved.
  14  * $COPYRIGHT$
  15  *
  16  * Additional copyrights may follow
  17  *
  18  * $HEADER$
  19  */
  20 
  21 #include "ompi_config.h"
  22 
  23 #include "ompi/mpi/c/bindings.h"
  24 #include "ompi/runtime/params.h"
  25 #include "ompi/communicator/communicator.h"
  26 #include "ompi/errhandler/errhandler.h"
  27 #include "ompi/runtime/mpiruntime.h"
  28 #include "opal/threads/threads.h"
  29 
  30 #if OMPI_BUILD_MPI_PROFILING
  31 #if OPAL_HAVE_WEAK_SYMBOLS
  32 #pragma weak MPI_Is_thread_main = PMPI_Is_thread_main
  33 #endif
  34 #define MPI_Is_thread_main PMPI_Is_thread_main
  35 #endif
  36 
  37 static const char FUNC_NAME[] = "MPI_Is_thread_main";
  38 
  39 
  40 int MPI_Is_thread_main(int *flag)
  41 {
  42     OPAL_CR_NOOP_PROGRESS();
  43 
  44     if (MPI_PARAM_CHECK) {
  45         OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
  46         if (NULL == flag) {
  47             return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM, FUNC_NAME);
  48         }
  49     }
  50 
  51     /* Compare this thread ID to the main thread ID */
  52 
  53     *flag = (int) opal_thread_self_compare(ompi_mpi_main_thread);
  54 
  55     return MPI_SUCCESS;
  56 }

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