86 строки
2.9 KiB
C
86 строки
2.9 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2013 University of Houston. All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include "sharedfp_addproc.h"
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#include "mpi.h"
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#include "ompi/constants.h"
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#include "ompi/mca/sharedfp/sharedfp.h"
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int mca_sharedfp_addproc_iread(mca_io_ompio_file_t *fh,
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void *buf,
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int count,
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ompi_datatype_t *datatype,
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MPI_Request * request)
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{
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int ret = OMPI_SUCCESS;
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OMPI_MPI_OFFSET_TYPE offset = 0;
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long bytesRequested = 0;
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size_t numofBytes;
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struct mca_sharedfp_base_data_t *sh = NULL;
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if(NULL == fh->f_sharedfp_data){
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opal_output(0, "sharedfp_addproc_iread - shared file pointer structure not initialized correctly\n");
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return OMPI_ERROR;
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}
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/* Calculate the number of bytes to write */
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opal_datatype_type_size ( &datatype->super ,&numofBytes);
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bytesRequested = count * numofBytes;
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if ( mca_sharedfp_addproc_verbose ){
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printf("mca_sharedfp_addproc_iread: Bytes Requested is %ld\n",bytesRequested);
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}
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/* Retrieve the shared file data struct */
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sh = fh->f_sharedfp_data;
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/*Request to the additional process for the offset*/
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ret = mca_sharedfp_addproc_request_position(sh,bytesRequested,&offset);
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if( OMPI_SUCCESS == ret ){
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if ( mca_sharedfp_addproc_verbose ){
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printf("mca_sharedfp_addproc_iread: Offset received is %lld\n",offset);
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}
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/* Read from the file */
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ret = ompio_io_ompio_file_iread_at ( sh->sharedfh, offset, buf, count, datatype, request);
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}
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return ret;
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}
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int mca_sharedfp_addproc_read_ordered_begin(mca_io_ompio_file_t *fh,
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void *buf,
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int count,
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struct ompi_datatype_t *datatype)
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{
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opal_output(0,"mca_sharedfp_addproc_read_ordered_begin: NOT IMPLEMENTED\n");
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return OMPI_ERROR;
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}
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int mca_sharedfp_addproc_read_ordered_end(mca_io_ompio_file_t *fh,
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void *buf,
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ompi_status_public_t *status)
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{
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opal_output(0,"mca_sharedfp_addproc_read_ordered_end: NOT IMPLEMENTED\n");
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return OMPI_ERROR;
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}
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