103 строки
3.0 KiB
C
103 строки
3.0 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
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/*
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*
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* Copyright (C) 1997 University of Chicago.
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* See COPYRIGHT notice in top-level directory.
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*/
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#include "mpioimpl.h"
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#ifdef HAVE_WEAK_SYMBOLS
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#if defined(HAVE_PRAGMA_WEAK)
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#pragma weak MPI_File_get_view = PMPI_File_get_view
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#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
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#pragma _HP_SECONDARY_DEF PMPI_File_get_view MPI_File_get_view
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#elif defined(HAVE_PRAGMA_CRI_DUP)
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#pragma _CRI duplicate MPI_File_get_view as PMPI_File_get_view
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/* end of weak pragmas */
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#elif defined(HAVE_WEAK_ATTRIBUTE)
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int MPI_File_get_view(MPI_File fh, MPI_Offset *disp, MPI_Datatype *etype, MPI_Datatype *filetype,
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char *datarep) __attribute__((weak,alias("PMPI_File_get_view")));
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#endif
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/* Include mapping from MPI->PMPI */
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#define MPIO_BUILD_PROFILING
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#include "mpioprof.h"
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#endif
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#ifdef MPISGI
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#include "mpisgi2.h"
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#endif
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/*@
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MPI_File_get_view - Returns the file view
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Input Parameters:
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. fh - file handle (handle)
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Output Parameters:
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. disp - displacement (nonnegative integer)
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. etype - elementary datatype (handle)
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. filetype - filetype (handle)
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. datarep - data representation (string)
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.N fortran
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@*/
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int MPI_File_get_view(MPI_File fh, MPI_Offset *disp, MPI_Datatype *etype,
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MPI_Datatype *filetype, char *datarep)
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{
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int error_code;
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ADIO_File adio_fh;
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static char myname[] = "MPI_FILE_GET_VIEW";
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int i, j, k, combiner;
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MPI_Datatype copy_etype, copy_filetype;
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ROMIO_THREAD_CS_ENTER();
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adio_fh = MPIO_File_resolve(fh);
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/* --BEGIN ERROR HANDLING-- */
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MPIO_CHECK_FILE_HANDLE(adio_fh, myname, error_code);
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if (datarep == NULL)
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{
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error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
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myname, __LINE__, MPI_ERR_ARG,
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"**iodatarepnomem", 0);
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error_code = MPIO_Err_return_file(adio_fh, error_code);
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goto fn_exit;
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}
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/* --END ERROR HANDLING-- */
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*disp = adio_fh->disp;
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ADIOI_Strncpy(datarep,
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(adio_fh->is_external32 ? "external32": "native"), MPI_MAX_DATAREP_STRING);
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MPI_Type_get_envelope(adio_fh->etype, &i, &j, &k, &combiner);
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if (combiner == MPI_COMBINER_NAMED) *etype = adio_fh->etype;
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else {
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/* FIXME: It is wrong to use MPI_Type_contiguous; the user could choose to
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re-implement MPI_Type_contiguous in an unexpected way. Either use
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MPIR_Barrier_impl as in MPICH or PMPI_Type_contiguous */
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MPI_Type_contiguous(1, adio_fh->etype, ©_etype);
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/* FIXME: Ditto for MPI_Type_commit - use NMPI or PMPI */
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MPI_Type_commit(©_etype);
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*etype = copy_etype;
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}
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/* FIXME: Ditto for MPI_Type_xxx - use NMPI or PMPI */
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MPI_Type_get_envelope(adio_fh->filetype, &i, &j, &k, &combiner);
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if (combiner == MPI_COMBINER_NAMED) *filetype = adio_fh->filetype;
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else {
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MPI_Type_contiguous(1, adio_fh->filetype, ©_filetype);
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MPI_Type_commit(©_filetype);
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*filetype = copy_filetype;
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}
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fn_exit:
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ROMIO_THREAD_CS_EXIT();
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return MPI_SUCCESS;
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}
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