hdf5/test/gen_filespace.c

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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 "hdf5.h"
#include <assert.h>

#define NELMTS(X) (sizeof(X) / sizeof(X[0])) /* # of elements */

const char *FILENAMES[] = {
    "fsm_aggr_nopersist.h5", /* H5F_FSPACE_STRATEGY_FSM_AGGR + not persisting free-space */
    "fsm_aggr_persist.h5",   /* H5F_FSPACE_STRATEGY_FSM_AGGR + persisting free-space */
    "paged_nopersist.h5",    /* H5F_FSPACE_STRATEGY_PAGE + not persisting free-space */
    "paged_persist.h5",      /* H5F_FSPACE_STRATEGY_PAGE + persisting free-space */
    "aggr.h5",               /* H5F_FSPACE_STRATEGY_AGGR */
    "none.h5"                /* H5F_FSPACE_STRATEGY_NONE */
};

#define DATASET   "dset"
#define NUM_ELMTS 100
#define FALSE     0
#define TRUE      1

/*
 * Compile and run this program in the trunk to generate
 * HDF5 files with combinations of 4 file space strategies
 * and persist/not persist free-space.
 * The library creates the file space info message with "mark if unknown"
 * in these files.
 *
 * Move these files to 1.8 branch for compatibility testing:
 * test_filespace_compatible() in test/tfile.c will use these files.
 *
 * Copy these files from the 1.8 branch back to the trunk for
 * compatibility testing via test_filespace_round_compatible() in test/tfile.c.
 *
 */
int
main(void)
{
    hid_t                 fid  = -1;       /* File ID */
    hid_t                 fcpl = -1;       /* File creation property list */
    hid_t                 did  = -1;       /* Dataset ID */
    hid_t                 sid  = -1;       /* Dataspace ID */
    hsize_t               dim[1];          /* Dimension sizes */
    int                   data[NUM_ELMTS]; /* Buffer for data */
    int                   i, j;            /* Local index variables */
    H5F_fspace_strategy_t fs_strategy;     /* File space handling strategy */
    unsigned              fs_persist;      /* Persisting free-space or not */

    j = 0;
    for (fs_strategy = H5F_FSPACE_STRATEGY_FSM_AGGR; fs_strategy < H5F_FSPACE_STRATEGY_NTYPES;
         fs_strategy++) {
        for (fs_persist = FALSE; fs_persist <= TRUE; fs_persist++) {

            if (fs_persist && fs_strategy >= H5F_FSPACE_STRATEGY_AGGR)
                continue;

            /* Get a copy of the default file creation property */
            if ((fcpl = H5Pcreate(H5P_FILE_CREATE)) < 0)
                goto error;

            if (H5Pset_file_space_strategy(fcpl, fs_strategy, fs_persist, (hsize_t)1) < 0)
                goto error;

            /* Create the file with the file space info */
            if ((fid = H5Fcreate(FILENAMES[j], H5F_ACC_TRUNC, fcpl, H5P_DEFAULT)) < 0)
                goto error;

            /* Create the dataset */
            dim[0] = NUM_ELMTS;
            if ((sid = H5Screate_simple(1, dim, NULL)) < 0)
                goto error;
            if ((did = H5Dcreate2(fid, DATASET, H5T_NATIVE_INT, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) <
                0)
                goto error;

            for (i = 0; i < NUM_ELMTS; i++)
                data[i] = i;

            /* Write the dataset */
            if (H5Dwrite(did, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data) < 0)
                goto error;

            /* Closing */
            if (H5Dclose(did) < 0)
                goto error;
            if (H5Sclose(sid) < 0)
                goto error;
            if (H5Fclose(fid) < 0)
                goto error;
            if (H5Pclose(fcpl) < 0)
                goto error;
            ++j;
        }
    }
    assert(j == NELMTS(FILENAMES));

    return 0;

error:
    H5E_BEGIN_TRY
    {
        H5Sclose(sid);
        H5Sclose(did);
        H5Pclose(fcpl);
        H5Fclose(fid);
    }
    H5E_END_TRY;
    return -1;
}