67 строки
2.0 KiB
C
67 строки
2.0 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 <stdio.h>
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#include "mpi.h"
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#include "mpi/c/bindings.h"
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#include "mpi/f77/fint_2_int.h"
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#include "request/request.h"
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#include "errhandler/errhandler.h"
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#include "communicator/communicator.h"
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#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Request_c2f = PMPI_Request_c2f
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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_Request_f2c";
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MPI_Fint MPI_Request_c2f(MPI_Request request)
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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 == request) {
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request = MPI_REQUEST_NULL;
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}
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}
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/* We only put requests in the f2c table when this function is
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invoked. This is because putting requests in the table
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involves locking and unlocking the table, which would incur a
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performance penalty (in the critical performance path) for C
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applications. In this way, at least only Fortran applications
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are penalized. :-\
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Modifying this one function neatly fixes up all the Fortran
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bindings because they all call MPI_Request_c2f in order to
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transmorgify the C MPI_Request that they got back into a
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fortran integer.
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*/
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if (MPI_UNDEFINED == request->req_f_to_c_index) {
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request->req_f_to_c_index =
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ompi_pointer_array_add(&ompi_request_f_to_c_table, request);
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}
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return OMPI_INT_2_FINT(request->req_f_to_c_index) ;
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}
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