52eac0146d
was not used anyway in the last two years. Simplifies the code significantly. This commit was SVN r32602.
117 строки
3.4 KiB
C
117 строки
3.4 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) 2004-2011 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) 2008-2011 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 "fbtl_posix.h"
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#include "mpi.h"
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#include <unistd.h>
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#include <sys/uio.h>
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#include <aio.h>
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#include "ompi/constants.h"
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#include "ompi/mca/fbtl/fbtl.h"
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size_t mca_fbtl_posix_ipwritev (mca_io_ompio_file_t *fh,
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ompi_request_t **request)
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{
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int i;
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int num_req = 0;
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int merge = 0;
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size_t k;
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char *merge_buf = NULL;
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size_t merge_length = 0;
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OMPI_MPI_OFFSET_TYPE merge_offset = 0;
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struct aiocb *aiocbp;
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aiocbp = (struct aiocb *) malloc (sizeof(struct aiocb) *
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fh->f_num_of_io_entries);
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if (NULL == aiocbp) {
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opal_output(1, "OUT OF MEMORY\n");
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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for (i=0 ; i<fh->f_num_of_io_entries ; i++) {
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if (fh->f_num_of_io_entries != i+1) {
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if (((OMPI_MPI_OFFSET_TYPE)(intptr_t)fh->f_io_array[i].offset +
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(OPAL_PTRDIFF_TYPE)fh->f_io_array[i].length) ==
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(OMPI_MPI_OFFSET_TYPE)(intptr_t)fh->f_io_array[i+1].offset) {
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if (!merge) {
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merge_offset = (OMPI_MPI_OFFSET_TYPE)(intptr_t)
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fh->f_io_array[i].offset;
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merge_length = fh->f_io_array[i].length;
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}
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merge_length += fh->f_io_array[i+1].length;
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merge++;
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continue;
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}
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}
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if (merge) {
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merge_buf = malloc (merge_length);
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if (NULL == merge_buf) {
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opal_output(1, "OUT OF MEMORY\n");
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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k = 0;
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while (merge >= 0) {
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memcpy (merge_buf + k,
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fh->f_io_array[i-merge].memory_address,
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fh->f_io_array[i-merge].length);
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k += fh->f_io_array[i-merge].length;
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merge --;
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}
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aiocbp[num_req].aio_offset = merge_offset;
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aiocbp[num_req].aio_buf = merge_buf;
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aiocbp[num_req].aio_nbytes = merge_length;
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aiocbp[num_req].aio_fildes = fh->fd;
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aiocbp[num_req].aio_reqprio = 0;
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aiocbp[num_req].aio_sigevent.sigev_notify = SIGEV_NONE;
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if (-1 == aio_write(&aiocbp[num_req])) {
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perror("aio_write() error");
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return OMPI_ERROR;
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}
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merge = 0;
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merge_offset = 0;
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merge_length = 0;
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if (NULL != merge_buf) {
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free (merge_buf);
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merge_buf = NULL;
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}
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}
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else {
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aiocbp[num_req].aio_offset = (OMPI_MPI_OFFSET_TYPE)(intptr_t)
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fh->f_io_array[i].offset;
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aiocbp[num_req].aio_buf = fh->f_io_array[i].memory_address;
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aiocbp[num_req].aio_nbytes = fh->f_io_array[i].length;
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aiocbp[num_req].aio_fildes = fh->fd;
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aiocbp[num_req].aio_reqprio = 0;
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aiocbp[num_req].aio_sigevent.sigev_notify = SIGEV_NONE;
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if (-1 == aio_write(&aiocbp[num_req])) {
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perror("aio_write() error");
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return OMPI_ERROR;
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}
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}
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num_req ++;
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}
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return OMPI_SUCCESS;
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}
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