mirror of
https://github.com/HDFGroup/hdf5.git
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154 lines
5.1 KiB
C
154 lines
5.1 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: Pedro Vicente <pvn@hdfgroup.edu>
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* April 7, 2008
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*
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* Purpose: Tests the H5Dget_chunk_info API function
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* This program writes a 4x4 dataset by iterating on 2x2 chunks
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* at a time
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*/
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#include "hdf5.h"
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#include "h5test.h"
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#define PRINT_DATA
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#define H5FILE_NAME "chunk_info.h5"
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#define DATASETNAME "2d"
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#define RANK 2
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int main( void )
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{
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hid_t fid; /* file ID */
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hid_t did; /* dataset ID */
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hid_t f_sid; /* file space ID */
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hid_t m_sid; /* memory space ID */
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hid_t pid; /* property list ID */
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hsize_t start[2]; /* chunk location to start writing */
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hsize_t dims[2] = { 4, 4};
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hsize_t chunk_dims[2] = { 2, 2 };
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int chunk_data[2][2] = { {1, 1}, {1, 1} };
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int buf[4][4];
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int fillvalue = 0;
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int i, j, ii, jj;
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/* create a new file using default properties. */
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if ((fid = H5Fcreate(H5FILE_NAME, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
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/* create the file space */
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if ((f_sid = H5Screate_simple(RANK, dims, dims)) < 0) TEST_ERROR;
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/* create the memory space with chunk dimensions */
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if ((m_sid = H5Screate_simple(RANK, chunk_dims, chunk_dims)) < 0) TEST_ERROR;
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start[0] = 0;
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start[1] = 0;
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if (H5Sselect_hyperslab(m_sid, H5S_SELECT_SET, start, NULL, chunk_dims, NULL) < 0) TEST_ERROR;
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TESTING("chunk info");
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/*-------------------------------------------------------------------------
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* create a dataset
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*-------------------------------------------------------------------------
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*/
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/* modify dataset creation properties, i.e. enable chunking. */
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if ((pid = H5Pcreate (H5P_DATASET_CREATE)) < 0) TEST_ERROR;
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if (H5Pset_chunk(pid, RANK, chunk_dims) < 0) TEST_ERROR;
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if (H5Pset_fill_value(pid, H5T_NATIVE_INT, &fillvalue) < 0) TEST_ERROR;
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/* create a new dataset */
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if((did = H5Dcreate2(fid , DATASETNAME, H5T_NATIVE_INT, f_sid, H5P_DEFAULT, pid, H5P_DEFAULT)) < 0) TEST_ERROR;
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/*-------------------------------------------------------------------------
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* write the dataset in 2x2 chunks
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*-------------------------------------------------------------------------
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*/
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/* iterate in dim 0 */
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for (j = 0; j < chunk_dims[0]; j++)
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{
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/* reset start in dim 1 */
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start[1] = 0;
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/* iterate in dim 1 */
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for (i = 0; i < chunk_dims[1]; i++)
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{
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/* select file hyperslab to save a 2x2 chunk */
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if (H5Sselect_hyperslab(f_sid, H5S_SELECT_SET, start, NULL, chunk_dims, NULL) < 0) TEST_ERROR;
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/* write the data to the hyperslab. */
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if (H5Dwrite(did, H5T_NATIVE_INT, m_sid, f_sid, H5P_DEFAULT, chunk_data) < 0) TEST_ERROR;
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/* read back and display complete dataset 4x4 */
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if (H5Dread(did, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf) < 0) TEST_ERROR;
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#if defined (PRINT_DATA)
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printf("\n");
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printf("dataset: \n");
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for (jj = 0; jj < dims[0]; jj++) {
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for (ii = 0; ii < dims[1]; ii++) printf("%d ", buf[jj][ii]);
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printf("\n");
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}
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#endif
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/* increment start in dim 1 */
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start[1] += 2;
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}
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/* increment start in dim 0 */
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start[0] += 2;
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}
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/*-------------------------------------------------------------------------
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* close
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*-------------------------------------------------------------------------
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*/
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if (H5Dclose(did) < 0) TEST_ERROR
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if (H5Sclose(f_sid) < 0) TEST_ERROR
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if (H5Sclose(m_sid) < 0) TEST_ERROR
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if (H5Pclose(pid) < 0) TEST_ERROR
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if (H5Fclose(fid) < 0) TEST_ERROR
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PASSED();
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puts("All chunk info tests passed.");
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return 0;
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error:
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H5Dclose( did );
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H5Sclose( f_sid );
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H5Sclose( m_sid );
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H5Pclose( pid );
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H5Fclose( fid );
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H5_FAILED();
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return 1;
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}
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