77 строки
1.7 KiB
C
77 строки
1.7 KiB
C
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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2012-2013 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/mpi/tool/mpit-internal.h"
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#include "ompi/runtime/ompi_info_support.h"
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#include "opal/include/opal/sys/atomic.h"
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#include "opal/runtime/opal.h"
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#if OPAL_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_T_init_thread = PMPI_T_init_thread
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#endif
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#if OMPI_PROFILING_DEFINES
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#include "ompi/mpi/tool/profile/defines.h"
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#endif
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extern opal_mutex_t mpit_big_lock;
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extern volatile uint32_t mpit_init_count;
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extern volatile int32_t initted;
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static const char FUNC_NAME[] = "MPI_T_init_thread";
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int MPI_T_init_thread (int required, int *provided)
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{
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static volatile int32_t first_init = 1;
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int rc = MPI_SUCCESS;
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if (opal_atomic_cmpset (&first_init, 1, 0) == 1) {
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OBJ_CONSTRUCT(&mpit_big_lock, opal_mutex_t);
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initted = 1;
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}
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while (!initted) {
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usleep (10);
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}
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mpit_lock ();
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do {
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if (0 != mpit_init_count++) {
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break;
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}
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/* call opal_init_util to intialize the MCA system */
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rc = opal_init_util (NULL, NULL);
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if (OPAL_SUCCESS != rc) {
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rc = MPI_ERR_OTHER;
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break;
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}
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/* register all parameters */
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rc = ompi_info_register_framework_params (NULL);
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if (OMPI_SUCCESS != rc) {
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rc = MPI_ERR_OTHER;
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break;
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}
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/* determine the thread level. TODO -- this might
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be wrong */
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ompi_mpi_thread_level (required, provided);
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} while (0);
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mpit_unlock ();
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return rc;
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}
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