108 строки
2.9 KiB
C
108 строки
2.9 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_preallocate = PMPI_File_preallocate
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#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
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#pragma _HP_SECONDARY_DEF PMPI_File_preallocate MPI_File_preallocate
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#elif defined(HAVE_PRAGMA_CRI_DUP)
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#pragma _CRI duplicate MPI_File_preallocate as PMPI_File_preallocate
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/* end of weak pragmas */
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#elif defined(HAVE_WEAK_ATTRIBUTE)
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int MPI_File_preallocate(MPI_File fh, MPI_Offset size) __attribute__((weak,alias("PMPI_File_preallocate")));
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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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/*@
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MPI_File_preallocate - Preallocates storage space for a file
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Input Parameters:
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. fh - file handle (handle)
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. size - size to preallocate (nonnegative integer)
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.N fortran
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@*/
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int MPI_File_preallocate(MPI_File fh, MPI_Offset size)
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{
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ADIO_Fcntl_t *fcntl_struct;
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int error_code=0, mynod=0;
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ADIO_File adio_fh;
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static char myname[] = "MPI_FILE_PREALLOCATE";
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MPI_Offset tmp_sz, max_sz, min_sz;
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#ifdef MPI_hpux
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int fl_xmpi;
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HPMP_IO_START(fl_xmpi, BLKMPIFILEPREALLOCATE, TRDTBLOCK,
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adio_fh, MPI_DATATYPE_NULL, -1);
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#endif /* MPI_hpux */
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MPIU_THREAD_CS_ENTER(ALLFUNC,);
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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 (size < 0) {
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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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"**iobadsize", 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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tmp_sz = size;
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MPI_Allreduce(&tmp_sz, &max_sz, 1, ADIO_OFFSET, MPI_MAX, adio_fh->comm);
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MPI_Allreduce(&tmp_sz, &min_sz, 1, ADIO_OFFSET, MPI_MIN, adio_fh->comm);
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if (max_sz != min_sz) {
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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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"**notsame", 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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if (size == 0) goto fn_exit;
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ADIOI_TEST_DEFERRED(adio_fh, myname, &error_code);
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MPI_Comm_rank(adio_fh->comm, &mynod);
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if (!mynod) {
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fcntl_struct = (ADIO_Fcntl_t *) ADIOI_Malloc(sizeof(ADIO_Fcntl_t));
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fcntl_struct->diskspace = size;
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ADIO_Fcntl(adio_fh, ADIO_FCNTL_SET_DISKSPACE, fcntl_struct, &error_code);
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ADIOI_Free(fcntl_struct);
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/* --BEGIN ERROR HANDLING-- */
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if (error_code != MPI_SUCCESS)
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error_code = MPIO_Err_return_file(adio_fh, error_code);
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/* --END ERROR HANDLING-- */
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}
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MPI_Barrier(adio_fh->comm);
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#ifdef MPI_hpux
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HPMP_IO_END(fl_xmpi, adio_fh, MPI_DATATYPE_NULL, -1);
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#endif /* MPI_hpux */
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fn_exit:
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MPIU_THREAD_CS_EXIT(ALLFUNC,);
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/* TODO: bcast result? */
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if (!mynod) return error_code;
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else return MPI_SUCCESS;
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}
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