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libs/ck-libs/ampi/romio/adio/ad_pvfs/ad_pvfs_iread.c

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/* -*- Mode: C; c-basic-offset:4 ; -*- */
/* 
 *   $Id$    
 *
 *   Copyright (C) 1997 University of Chicago. 
 *   See COPYRIGHT notice in top-level directory.
 */

#include "ad_pvfs.h"

void ADIOI_PVFS_IreadContig(ADIO_File fd, void *buf, int count, 
                MPI_Datatype datatype, int file_ptr_type,
                ADIO_Offset offset, ADIO_Request *request, int *error_code)  
{
    ADIO_Status status;
    int len, typesize;

/* PVFS does not support nonblocking I/O. Therefore, use blocking I/O */

    *request = ADIOI_Malloc_request();
    (*request)->optype = ADIOI_READ;
    (*request)->fd = fd;
    (*request)->queued = 0;
    (*request)->datatype = datatype;

    MPI_Type_size(datatype, &typesize);
    len = count * typesize;
    ADIOI_PVFS_ReadContig(fd, buf, len, MPI_BYTE, file_ptr_type, offset, &status,
                    error_code);  

#ifdef HAVE_STATUS_SET_BYTES
    if (*error_code == MPI_SUCCESS) {
        MPI_Get_elements(&status, MPI_BYTE, &len);
        (*request)->nbytes = len;
    }
#endif
    fd->async_count++;
}



void ADIOI_PVFS_IreadStrided(ADIO_File fd, void *buf, int count, 
                       MPI_Datatype datatype, int file_ptr_type,
                       ADIO_Offset offset, ADIO_Request *request, int
                       *error_code)
{
    ADIO_Status status;
#ifdef HAVE_STATUS_SET_BYTES
    int typesize;
#endif

/* PVFS does not support nonblocking I/O. Therefore, use blocking I/O */

    *request = ADIOI_Malloc_request();
    (*request)->optype = ADIOI_READ;
    (*request)->fd = fd;
    (*request)->queued = 0;
    (*request)->datatype = datatype;

    ADIOI_PVFS_ReadStrided(fd, buf, count, datatype, file_ptr_type, 
                            offset, &status, error_code);  

    fd->async_count++;

#ifdef HAVE_STATUS_SET_BYTES
    if (*error_code == MPI_SUCCESS) {
        MPI_Type_size(datatype, &typesize);
        (*request)->nbytes = count * typesize;
    }
#endif
}

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