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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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Purpose: Create a file with a dataset who's raw data immediately follows
* its object header, so that when the dataset is unlinked from its parent
* group, a speculative read of the object header would get the raw data
* into the metadata accumulator, "polluting" it.
* To build the test file, this program MUST be compiled and linked with
* the library on the trunk as of when this file is checked in.
*/
#include "h5test.h"
#define FILENAME "specmetaread.h5"
#define DIM 10
int
main(void)
{
hid_t fid;
hid_t fapl;
hid_t did;
hid_t space;
hsize_t dim[1] = {DIM};
unsigned data[DIM];
unsigned u;
herr_t H5_ATTR_NDEBUG_UNUSED ret;
/* Initialize the data */
for (u = 0; u < DIM; u++)
data[u] = u;
/* Create a FAPL with the metadata and small data aggregators turned off */
fapl = H5Pcreate(H5P_FILE_ACCESS);
assert(fapl > 0);
ret = H5Pset_meta_block_size(fapl, (hsize_t)0);
assert(ret >= 0);
ret = H5Pset_small_data_block_size(fapl, (hsize_t)0);
assert(ret >= 0);
/* Create file */
fid = H5Fcreate(FILENAME, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
assert(fid > 0);
/* Close FAPL */
ret = H5Pclose(fapl);
assert(ret >= 0);
/* Create dataspace */
space = H5Screate_simple(1, dim, NULL);
assert(space > 0);
/* Create dataset #1 */
did = H5Dcreate2(fid, "dset1", H5T_NATIVE_UINT, space, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
assert(did > 0);
ret = H5Dwrite(did, H5T_NATIVE_UINT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data);
assert(ret >= 0);
ret = H5Dclose(did);
assert(ret >= 0);
/* Create dataset #2 */
did = H5Dcreate2(fid, "dset2", H5T_NATIVE_UINT, space, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
assert(did > 0);
ret = H5Dwrite(did, H5T_NATIVE_UINT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data);
assert(ret >= 0);
ret = H5Dclose(did);
assert(ret >= 0);
/* Close dataspace */
ret = H5Sclose(space);
assert(ret >= 0);
/* Close file */
ret = H5Fclose(fid);
assert(ret >= 0);
return 0;
}
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