140 строки
3.9 KiB
C
140 строки
3.9 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_read_all_begin = PMPI_File_read_all_begin
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#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
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#pragma _HP_SECONDARY_DEF PMPI_File_read_all_begin MPI_File_read_all_begin
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#elif defined(HAVE_PRAGMA_CRI_DUP)
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#pragma _CRI duplicate MPI_File_read_all_begin as PMPI_File_read_all_begin
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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_all_begin(MPI_File fh, void *buf, int count, MPI_Datatype datatype)
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__attribute__((weak,alias("PMPI_File_read_all_begin")));
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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_read_all_begin - Begin a split collective read using individual file pointer
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Input Parameters:
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. fh - file handle (handle)
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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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.N fortran
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@*/
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int MPI_File_read_all_begin(MPI_File fh, void *buf, int count,
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MPI_Datatype datatype)
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{
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int error_code;
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static char myname[] = "MPI_FILE_READ_ALL_BEGIN";
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error_code = MPIOI_File_read_all_begin(fh, (MPI_Offset) 0,
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ADIO_INDIVIDUAL, buf, count,
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datatype, myname);
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return error_code;
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}
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/* prevent multiple definitions of this routine */
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#ifdef MPIO_BUILD_PROFILING
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int MPIOI_File_read_all_begin(MPI_File fh,
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MPI_Offset offset,
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int file_ptr_type,
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void *buf,
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int count,
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MPI_Datatype datatype,
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char *myname)
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{
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int error_code;
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MPI_Count datatype_size;
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ADIO_File adio_fh;
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void *xbuf=NULL, *e32_buf=NULL;
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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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MPIO_CHECK_COUNT(adio_fh, count, myname, error_code);
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MPIO_CHECK_DATATYPE(adio_fh, datatype, myname, error_code);
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if (file_ptr_type == ADIO_EXPLICIT_OFFSET && offset < 0)
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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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"**iobadoffset", 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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MPI_Type_size_x(datatype, &datatype_size);
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/* --BEGIN ERROR HANDLING-- */
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MPIO_CHECK_INTEGRAL_ETYPE(adio_fh, count, datatype_size, myname, error_code);
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MPIO_CHECK_READABLE(adio_fh, myname, error_code);
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MPIO_CHECK_NOT_SEQUENTIAL_MODE(adio_fh, myname, error_code);
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if (adio_fh->split_coll_count) {
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error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
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myname, __LINE__, MPI_ERR_IO,
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"**iosplitcoll", 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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MPIO_CHECK_COUNT_SIZE(adio_fh, count, datatype_size, myname, error_code);
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/* --END ERROR HANDLING-- */
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adio_fh->split_coll_count = 1;
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xbuf = buf;
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if (adio_fh->is_external32)
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{
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MPI_Aint e32_size = 0;
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error_code = MPIU_datatype_full_size(datatype, &e32_size);
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if (error_code != MPI_SUCCESS)
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goto fn_exit;
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e32_buf = ADIOI_Malloc(e32_size*count);
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xbuf = e32_buf;
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}
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ADIO_ReadStridedColl(adio_fh, xbuf, count, datatype, file_ptr_type,
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offset, &adio_fh->split_status, &error_code);
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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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if (e32_buf != NULL) {
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error_code = MPIU_read_external32_conversion_fn(xbuf, datatype,
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count, e32_buf);
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ADIOI_Free(e32_buf);
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}
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fn_exit:
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MPIU_THREAD_CS_EXIT(ALLFUNC,);
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return error_code;
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}
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#endif
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