67 строки
1.8 KiB
C
67 строки
1.8 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
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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_read_at = PMPI_File_read_at
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#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
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#pragma _HP_SECONDARY_DEF PMPI_File_read_at MPI_File_read_at
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#elif defined(HAVE_PRAGMA_CRI_DUP)
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#pragma _CRI duplicate MPI_File_read_at as PMPI_File_read_at
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/* end of weak pragmas */
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#elif defined(HAVE_WEAK_ATTRIBUTE)
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int MPI_File_read_at(MPI_File fh, MPI_Offset offset, void *buf, int count, MPI_Datatype datatype,
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MPI_Status *status) __attribute__((weak,alias("PMPI_File_read_at")));
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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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/* status object not filled currently */
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/*@
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MPI_File_read_at - Read using explicit offset
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Input Parameters:
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. fh - file handle (handle)
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. offset - file offset (nonnegative integer)
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. count - number of elements in buffer (nonnegative integer)
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. datatype - datatype of each buffer element (handle)
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Output Parameters:
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. buf - initial address of buffer (choice)
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. status - status object (Status)
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.N fortran
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@*/
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int MPI_File_read_at(MPI_File fh, MPI_Offset offset, void *buf,
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int count, MPI_Datatype datatype, MPI_Status *status)
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{
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int error_code;
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static char myname[] = "MPI_FILE_READ_AT";
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#ifdef MPI_hpux
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int fl_xmpi;
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HPMP_IO_START(fl_xmpi, BLKMPIFILEREADAT, TRDTBLOCK, fh, datatype,
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count);
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#endif /* MPI_hpux */
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/* ADIOI_File_read() defined in mpi-io/read.c */
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error_code = MPIOI_File_read(fh, offset, ADIO_EXPLICIT_OFFSET, buf,
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count, datatype, myname, status);
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#ifdef MPI_hpux
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HPMP_IO_END(fl_xmpi, fh, datatype, count);
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#endif /* MPI_hpux */
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return error_code;
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}
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