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dcbf871fed
Don't allow reads to change or add to the metadata accumulator, since
they might be speculative and could bring raw data into the metadata
accumulator.
Tested on:
FreeBSD/32 6.3 (duty) in debug mode
FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode
Linux/32 2.6 (jam) w/PGI compilers, w/default API=1.8.x,
w/C++ & FORTRAN, w/threadsafe, in debug mode
Linux/64-amd64 2.6 (smirom) w/Intel compilers, w/default API=1.6.x,
w/C++ & FORTRAN, in production mode
Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
w/szip filter, in production mode
Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
in production mode
Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in debug mode
Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode
Mac OS X/32 10.6.1 (amazon) in debug mode
Mac OS X/32 10.6.1 (amazon) w/C++ & FORTRAN, w/threadsafe,
in production mode
97 lines
3.3 KiB
C
97 lines
3.3 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* Copyright by the Board of Trustees of the University of Illinois. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the files COPYING and Copyright.html. COPYING can be found at the root *
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* of the source code distribution tree; Copyright.html can be found at the *
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* root level of an installed copy of the electronic HDF5 document set and *
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* is linked from the top-level documents page. It can also be found at *
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* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
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* access to either file, you may request a copy from help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* Programmer: Quincey Koziol <koziol@hdfgroup.org>
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* Thursday, October 8, 2009
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*
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* Purpose: Create a file with a dataset who's raw data immediately follows
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* its object header, so that when the dataset is unlinked from its parent
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* group, a speculative read of the object header would get the raw data
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* into the metadata accumulator, "polluting" it.
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* To build the test file, this program MUST be compiled and linked with
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* the library on the trunk as of when this file is checked in.
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*/
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#include "hdf5.h"
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#include <assert.h>
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#define FILENAME "specmetaread.h5"
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#define DIM 10
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int
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main(void)
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{
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hid_t fid;
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hid_t fapl;
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hid_t did;
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hid_t space;
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hsize_t dim[1] = {DIM};
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unsigned data[DIM];
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unsigned u;
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herr_t ret; /* Generic return value */
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/* Initialize the data */
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for(u = 0; u < DIM; u++)
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data[u] = u;
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/* Create a FAPL with the metadata and small data aggregators turned off */
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fapl = H5Pcreate(H5P_FILE_ACCESS);
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assert(fapl > 0);
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ret = H5Pset_meta_block_size(fapl, (hsize_t)0);
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assert(ret >= 0);
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ret = H5Pset_small_data_block_size(fapl, (hsize_t)0);
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assert(ret >= 0);
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/* Create file */
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fid = H5Fcreate(FILENAME, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
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assert(fid > 0);
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/* Close FAPL */
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ret = H5Pclose(fapl);
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assert(ret >= 0);
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/* Create dataspace */
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space = H5Screate_simple(1, dim, NULL);
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assert(space > 0);
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/* Create dataset #1 */
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did = H5Dcreate2(fid, "dset1", H5T_NATIVE_UINT, space, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
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assert(did > 0);
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ret = H5Dwrite(did, H5T_NATIVE_UINT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data);
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assert(ret >= 0);
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ret = H5Dclose(did);
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assert(ret >= 0);
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/* Create dataset #2 */
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did = H5Dcreate2(fid, "dset2", H5T_NATIVE_UINT, space, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
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assert(did > 0);
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ret = H5Dwrite(did, H5T_NATIVE_UINT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data);
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assert(ret >= 0);
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ret = H5Dclose(did);
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assert(ret >= 0);
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/* Close dataspace */
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ret = H5Sclose(space);
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assert(ret >= 0);
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/* Close file */
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ret = H5Fclose(fid);
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assert(ret >= 0);
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return 0;
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}
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