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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2018 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2006 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2010 Oak Ridge National Labs. All rights reserved.
* Copyright (c) 2015 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2015-2018 Cisco Systems, Inc. All rights reserved
* Copyright (c) 2016 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2025 Advanced Micro Devices, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "opal/util/show_help.h"
#include "ompi/runtime/ompi_spc.h"
#include "ompi/mpi/c/bindings.h"
#include "ompi/runtime/params.h"
#include "ompi/communicator/communicator.h"
#include "ompi/errhandler/errhandler.h"
#include "ompi/constants.h"
#include "ompi/mca/hook/base/base.h"
#if OMPI_BUILD_MPI_PROFILING
#if OPAL_HAVE_WEAK_SYMBOLS
#pragma weak MPI_Init_thread = PMPI_Init_thread
#endif
#define MPI_Init_thread PMPI_Init_thread
#endif
static const char FUNC_NAME[] = "MPI_Init_thread";
int MPI_Init_thread(int *argc, char ***argv, int required,
int *provided)
{
int err, safe_required = MPI_THREAD_SERIALIZED;
bool err_arg_required = false;
ompi_hook_base_mpi_init_thread_top(argc, argv, required, provided);
/* Detect an incorrect thread support level, but dont report until we have the minimum
* infrastructure setup.
* In the future integer MPI_ABI values for MPI_THREAD_SINGLE-MULTIPLE
* may have gaps between them, so just checking the range is not enough.
*/
err_arg_required = (required != MPI_THREAD_SINGLE && required != MPI_THREAD_FUNNELED &&
required != MPI_THREAD_SERIALIZED && required != MPI_THREAD_MULTIPLE);
if (!err_arg_required) {
safe_required = required;
}
/* check for environment overrides for required thread level. If
* there is, check to see that it is a valid/supported thread level.
* If valid, the environment variable always override the provided thread
* level (even if lower than argument `required`). A user program can
* check `provided != required` to check if `required` has been overruled.
*/
err_arg_required |= (OMPI_SUCCESS > ompi_getenv_mpi_thread_level(&safe_required));
*provided = safe_required;
/* Call the back-end initialization function (we need to put as
little in this function as possible so that if it's profiled, we
don't lose anything) */
if (NULL != argc && NULL != argv) {
err = ompi_mpi_init(*argc, *argv, safe_required, provided, false);
} else {
err = ompi_mpi_init(0, NULL, safe_required, provided, false);
}
if (err_arg_required) {
/* Trigger the error handler for the incorrect argument. Keep it separate from the
* check on the ompi_mpi_init return and report a nice, meaningful error message to
* the user. */
return ompi_errhandler_invoke((ompi_errhandler_t*)&ompi_mpi_errors_are_fatal, NULL, OMPI_ERRHANDLER_TYPE_COMM,
MPI_ERR_ARG, FUNC_NAME);
}
/* Since we don't have a communicator to invoke an errorhandler on
here, don't use the fancy-schmancy ERRHANDLER macros; they're
really designed for real communicator objects. Just use the
back-end function directly. */
if (MPI_SUCCESS != err) {
return ompi_errhandler_invoke(NULL, NULL, OMPI_ERRHANDLER_TYPE_COMM,
err < 0 ? ompi_errcode_get_mpi_code(err) :
err, FUNC_NAME);
}
SPC_INIT();
ompi_hook_base_mpi_init_thread_bottom(argc, argv, required, provided);
return MPI_SUCCESS;
}
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