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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "h5test.h"
#include "vds_swmr.h"
static hsize_t VDS_PLANE[RANK] = {1, FULL_HEIGHT, WIDTH};
int
main(void)
{
hid_t fid = H5I_INVALID_HID; /* HDF5 file ID */
hid_t faplid = H5I_INVALID_HID; /* file access property list ID */
hid_t did = H5I_INVALID_HID; /* dataset ID */
hid_t msid = H5I_INVALID_HID; /* memory dataspace ID */
hid_t fsid = H5I_INVALID_HID; /* file dataspace ID */
hsize_t start[RANK]; /* hyperslab start point */
int n_elements = 0; /* size of buffer (elements) */
size_t size = 0; /* size of buffer (bytes) */
int *buffer = NULL; /* data buffer */
int n_dims = -1; /* # dimensions in dataset */
hsize_t dims[RANK]; /* current size of dataset */
hsize_t max_dims[RANK]; /* max size of dataset */
/* Open the VDS file and dataset */
if ((faplid = h5_fileaccess()) < 0)
TEST_ERROR;
if ((fid = H5Fopen(VDS_FILE_NAME, H5F_ACC_RDONLY | H5F_ACC_SWMR_READ, faplid)) < 0)
TEST_ERROR;
if ((did = H5Dopen2(fid, VDS_DSET_NAME, H5P_DEFAULT)) < 0)
TEST_ERROR;
/* Create the read buffer */
if (VDS_PLANE[1] * VDS_PLANE[2] > INT_MAX)
TEST_ERROR;
n_elements = (int)(VDS_PLANE[1] * VDS_PLANE[2]);
size = (size_t)n_elements * sizeof(int);
if (NULL == (buffer = (int *)malloc(size)))
TEST_ERROR;
/* Create memory dataspace */
if ((msid = H5Screate_simple(RANK, VDS_PLANE, NULL)) < 0)
TEST_ERROR;
/* Read data until the dataset is full (via the writer) */
do {
/* Refresh metadata */
if (H5Drefresh(did) < 0)
TEST_ERROR;
/* Get the dataset dimensions */
if ((fsid = H5Dget_space(did)) < 0)
TEST_ERROR;
if (H5Sget_simple_extent_dims(fsid, dims, max_dims) < 0)
TEST_ERROR;
/* Check the reported size of the VDS */
if ((n_dims = H5Sget_simple_extent_ndims(fsid)) < 0)
TEST_ERROR;
if (n_dims != RANK)
TEST_ERROR;
if (H5Sget_simple_extent_dims(fsid, dims, max_dims) < 0)
TEST_ERROR;
/* NOTE: Don't care what dims[0] is. */
if (dims[1] != FULL_HEIGHT)
TEST_ERROR;
if (dims[2] != WIDTH)
TEST_ERROR;
if (max_dims[0] != H5S_UNLIMITED)
TEST_ERROR;
if (max_dims[1] != FULL_HEIGHT)
TEST_ERROR;
if (max_dims[2] != WIDTH)
TEST_ERROR;
/* Continue if there's nothing to read */
if (0 == dims[0]) {
if (H5Sclose(fsid) < 0)
TEST_ERROR;
continue;
}
/* Read a plane from the VDS */
/* At this time, we just make sure we can read planes without errors. */
start[0] = dims[0] - 1;
start[1] = 0;
start[2] = 0;
if (H5Sselect_hyperslab(fsid, H5S_SELECT_SET, start, NULL, VDS_PLANE, NULL) < 0)
TEST_ERROR;
if (H5Dread(did, H5T_NATIVE_INT, msid, fsid, H5P_DEFAULT, buffer) < 0)
TEST_ERROR;
if (H5Sclose(fsid) < 0)
TEST_ERROR;
} while (dims[0] < N_PLANES_TO_WRITE);
/* Close file and dataset */
if (H5Pclose(faplid) < 0)
TEST_ERROR;
if (H5Sclose(msid) < 0)
TEST_ERROR;
if (H5Dclose(did) < 0)
TEST_ERROR;
if (H5Fclose(fid) < 0)
TEST_ERROR;
free(buffer);
fprintf(stderr, "SWMR reader exited successfully\n");
return EXIT_SUCCESS;
error:
H5E_BEGIN_TRY
{
if (fid >= 0)
(void)H5Fclose(fid);
if (faplid >= 0)
(void)H5Pclose(faplid);
if (did >= 0)
(void)H5Dclose(did);
if (msid >= 0)
(void)H5Sclose(msid);
if (fsid >= 0)
(void)H5Sclose(fsid);
}
H5E_END_TRY
free(buffer);
fprintf(stderr, "ERROR: SWMR reader exited with errors\n");
return EXIT_FAILURE;
} /* end main */
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