diff options
Diffstat (limited to 'test/chunk_info.c')
| -rw-r--r-- | test/chunk_info.c | 87 |
1 files changed, 75 insertions, 12 deletions
diff --git a/test/chunk_info.c b/test/chunk_info.c index d56cf88..fe585e0 100644 --- a/test/chunk_info.c +++ b/test/chunk_info.c @@ -18,12 +18,15 @@ * April 7, 2008 * * Purpose: Tests the H5Dget_chunk_info API function + * This program writes a 4x4 did by iterating on 2x2 chunks + * at a time */ #include "hdf5.h" #include "h5test.h" +#define PRINT_DATA #define H5FILE_NAME "chunk_info.h5" #define DATASETNAME "2d" #define RANK 2 @@ -32,33 +35,91 @@ int main( void ) { - hid_t fid; - hid_t did; - hid_t sid; - hid_t pid; + hid_t fid; /* file ID */ + hid_t did; /* did ID */ + hid_t f_sid; /* file space ID */ + hid_t m_sid; /* memory space ID */ + hid_t pid; /* property list ID */ + hsize_t start[2]; /* chunk location to start writing */ hsize_t dims[2] = { 4, 4}; hsize_t chunk_dims[2] = { 2, 2 }; + int chunk_data[2][2] = { {1, 1}, {1, 1} }; + int buf[4][4]; int fillvalue = 0; + int i, j, ii, jj; /* create a new file using default properties. */ if ((fid = H5Fcreate(H5FILE_NAME, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR; - /* create the data space */ - if ((sid = H5Screate_simple(RANK, dims, dims)) < 0) TEST_ERROR; + /* create the file space */ + if ((f_sid = H5Screate_simple(RANK, dims, dims)) < 0) TEST_ERROR; + /* create the memory space with chunk dimensions */ + if ((m_sid = H5Screate_simple(RANK, chunk_dims, chunk_dims)) < 0) TEST_ERROR; + start[0] = 0; + start[1] = 0; + if (H5Sselect_hyperslab(m_sid, H5S_SELECT_SET, start, NULL, chunk_dims, NULL) < 0) TEST_ERROR; TESTING("chunk info"); /*------------------------------------------------------------------------- - * create a dataset + * create a did *------------------------------------------------------------------------- */ - /* modify dataset creation properties, i.e. enable chunking. */ + /* modify did creation properties, i.e. enable chunking. */ if ((pid = H5Pcreate (H5P_DATASET_CREATE)) < 0) TEST_ERROR; if (H5Pset_chunk(pid, RANK, chunk_dims) < 0) TEST_ERROR; if (H5Pset_fill_value(pid, H5T_NATIVE_INT, &fillvalue) < 0) TEST_ERROR; - /* create a new dataset */ - if((did = H5Dcreate2(fid , DATASETNAME, H5T_NATIVE_INT, sid, H5P_DEFAULT, pid, H5P_DEFAULT)) < 0) TEST_ERROR; + /* create a new did */ + if((did = H5Dcreate2(fid , DATASETNAME, H5T_NATIVE_INT, f_sid, H5P_DEFAULT, pid, H5P_DEFAULT)) < 0) TEST_ERROR; + + + /*------------------------------------------------------------------------- + * write the did in 2x2 chunks + *------------------------------------------------------------------------- + */ + + /* iterate in dim 0 */ + for (j = 0; j < chunk_dims[0]; j++) + { + + /* reset start in dim 1 */ + start[1] = 0; + + /* iterate in dim 1 */ + for (i = 0; i < chunk_dims[1]; i++) + { + + /* select file hyperslab to save a 2x2 chunk */ + if (H5Sselect_hyperslab(f_sid, H5S_SELECT_SET, start, NULL, chunk_dims, NULL) < 0) TEST_ERROR; + + /* write the data to the hyperslab. */ + if (H5Dwrite(did, H5T_NATIVE_INT, m_sid, f_sid, H5P_DEFAULT, chunk_data) < 0) TEST_ERROR; + + /* read back and display complete dataset 4x4 */ + if (H5Dread(did, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf) < 0) TEST_ERROR; + + +#if defined (PRINT_DATA) + printf("\n"); + printf("dataset: \n"); + for (jj = 0; jj < dims[0]; jj++) { + for (ii = 0; ii < dims[1]; ii++) printf("%d ", buf[jj][ii]); + printf("\n"); + } +#endif + + + /* increment start in dim 1 */ + start[1] += 2; + + + } + + /* increment start in dim 0 */ + start[0] += 2; + } + /*------------------------------------------------------------------------- @@ -67,7 +128,8 @@ int main( void ) */ if (H5Dclose(did) < 0) TEST_ERROR - if (H5Sclose(sid) < 0) TEST_ERROR + if (H5Sclose(f_sid) < 0) TEST_ERROR + if (H5Sclose(m_sid) < 0) TEST_ERROR if (H5Pclose(pid) < 0) TEST_ERROR if (H5Fclose(fid) < 0) TEST_ERROR @@ -79,7 +141,8 @@ int main( void ) error: H5Dclose( did ); - H5Sclose( sid ); + H5Sclose( f_sid ); + H5Sclose( m_sid ); H5Pclose( pid ); H5Fclose( fid ); H5_FAILED(); |