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Diffstat (limited to 'test/gen_specmetaread.c')
-rw-r--r-- | test/gen_specmetaread.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/test/gen_specmetaread.c b/test/gen_specmetaread.c new file mode 100644 index 0000000..f489119 --- /dev/null +++ b/test/gen_specmetaread.c @@ -0,0 +1,96 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * Copyright by The HDF Group. * + * Copyright by the Board of Trustees of the University of Illinois. * + * 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 files COPYING and Copyright.html. COPYING can be found at the root * + * of the source code distribution tree; Copyright.html can be found at the * + * root level of an installed copy of the electronic HDF5 document set and * + * is linked from the top-level documents page. It can also be found at * + * http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have * + * access to either file, you may request a copy from help@hdfgroup.org. * + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ + +/* + * Programmer: Quincey Koziol <koziol@hdfgroup.org> + * Thursday, October 8, 2009 + * + * 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 "hdf5.h" +#include <assert.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 ret; /* Generic return value */ + + /* 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; +} + |