diff options
Diffstat (limited to 'examples/h5_vds-exc.c')
-rw-r--r-- | examples/h5_vds-exc.c | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/examples/h5_vds-exc.c b/examples/h5_vds-exc.c deleted file mode 100644 index 01597cc..0000000 --- a/examples/h5_vds-exc.c +++ /dev/null @@ -1,217 +0,0 @@ -/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * - * 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. * - * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ -/************************************************************ - - This example illustrates the concept of the virtual dataset. - Excalibur use case with k=2 and m=3. - This file is intended for use with HDF5 Library version 1.10 - - ************************************************************/ -/* EIP Add link to the picture */ - -#include "hdf5.h" -#include <stdio.h> -#include <stdlib.h> - -#define FILE "vds-exc.h5" -#define DATASET "VDS-Excalibur" -#define VDSDIM0 0 -#define VDSDIM1 15 -#define VDSDIM2 6 -#define KDIM0 0 -#define KDIM1 2 -#define KDIM2 6 -#define NDIM0 0 -#define NDIM1 3 -#define NDIM2 6 -#define RANK 3 - -const char *SRC_FILE[] = {"a.h5", "b.h5", "c.h5", "d.h5", "e.h5", "f.h5"}; - -const char *SRC_DATASET[] = {"A", "B", "C", "D", "E", "F"}; - -int -main(void) -{ - hid_t file, space, ksrc_space, nsrc_space, vspace, src_space, dset; /* Handles */ - hid_t dcpl; - herr_t status; - hsize_t vdsdims[3] = {VDSDIM0, VDSDIM1, VDSDIM2}, vdsdims_max[3] = {H5S_UNLIMITED, VDSDIM1, VDSDIM2}, - kdims[3] = {KDIM0, KDIM1, KDIM2}, kdims_max[3] = {H5S_UNLIMITED, KDIM1, KDIM2}, - ndims[3] = {NDIM0, NDIM1, NDIM2}, ndims_max[3] = {H5S_UNLIMITED, NDIM1, NDIM2}, - start[3], /* Hyperslab parameters */ - count[3], block[3]; - hsize_t start_out[3], stride_out[3], count_out[3], block_out[3]; - int k = 2; - int n = 3; - int i; - H5D_layout_t layout; /* Storage layout */ - size_t num_map; /* Number of mappings */ - ssize_t len; /* Length of the string; also a return value */ - char *filename; - char *dsetname; - - file = H5Fcreate(FILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT); - - /* Create VDS dataspace. */ - space = H5Screate_simple(RANK, vdsdims, vdsdims_max); - /* Create dataspaces for A, C, and E datasets. */ - ksrc_space = H5Screate_simple(RANK, kdims, kdims_max); - /* Create dataspaces for B, D, and F datasets. */ - nsrc_space = H5Screate_simple(RANK, ndims, ndims_max); - - /* Create VDS creation property */ - dcpl = H5Pcreate(H5P_DATASET_CREATE); - - /* Initialize hyperslab values */ - - start[0] = 0; - start[1] = 0; - start[2] = 0; - count[0] = H5S_UNLIMITED; - count[1] = 1; - count[2] = 1; - block[0] = 1; - block[1] = k; - block[2] = VDSDIM2; - - /* - * Build the mappings for A, C and E source datasets. - * Unlimited hyperslab selection is the same in the source datasets. - * Unlimited hyperslab selections in the virtual dataset have different offsets. - */ - status = H5Sselect_hyperslab(ksrc_space, H5S_SELECT_SET, start, NULL, count, block); - for (i = 0; i < 3; i++) { - start[1] = (hsize_t)((k + n) * i); - status = H5Sselect_hyperslab(space, H5S_SELECT_SET, start, NULL, count, block); - status = H5Pset_virtual(dcpl, space, SRC_FILE[2 * i], SRC_DATASET[2 * i], ksrc_space); - } - - /* Reinitialize start[1] and block[1] to build the second set of mappings. */ - start[1] = 0; - block[1] = n; - /* - * Build the mappings for B, D and F source datasets. - * Unlimited hyperslab selection is the same in the source datasets. - * Unlimited hyperslab selections in the virtual dataset have different offsets. - */ - status = H5Sselect_hyperslab(nsrc_space, H5S_SELECT_SET, start, NULL, count, block); - for (i = 0; i < 3; i++) { - start[1] = (hsize_t)(k + (k + n) * i); - status = H5Sselect_hyperslab(space, H5S_SELECT_SET, start, NULL, count, block); - status = H5Pset_virtual(dcpl, space, SRC_FILE[2 * i + 1], SRC_DATASET[2 * i + 1], nsrc_space); - } - - /* Create a virtual dataset */ - dset = H5Dcreate2(file, DATASET, H5T_NATIVE_INT, space, H5P_DEFAULT, dcpl, H5P_DEFAULT); - status = H5Sclose(space); - status = H5Sclose(nsrc_space); - status = H5Sclose(ksrc_space); - status = H5Dclose(dset); - status = H5Fclose(file); - - /* - * Now we begin the read section of this example. - */ - - /* - * Open file and dataset using the default properties. - */ - file = H5Fopen(FILE, H5F_ACC_RDONLY, H5P_DEFAULT); - dset = H5Dopen2(file, DATASET, H5P_DEFAULT); - - /* - * Get creation property list and mapping properties. - */ - dcpl = H5Dget_create_plist(dset); - - /* - * Get storage layout. - */ - layout = H5Pget_layout(dcpl); - - if (H5D_VIRTUAL == layout) - printf(" Dataset has a virtual layout \n"); - else - printf("Wrong layout found \n"); - - /* - * Find number of mappings. - */ - status = H5Pget_virtual_count(dcpl, &num_map); - printf(" Number of mappings is %lu\n", (unsigned long)num_map); - - /* - * Get mapping parameters for each mapping. - */ - for (i = 0; i < (int)num_map; i++) { - printf(" Mapping %d \n", i); - printf(" Selection in the virtual dataset \n"); - /* Get selection in the virtual dataset */ - vspace = H5Pget_virtual_vspace(dcpl, (size_t)i); - if (H5Sget_select_type(vspace) == H5S_SEL_HYPERSLABS) { - if (H5Sis_regular_hyperslab(vspace)) { - status = H5Sget_regular_hyperslab(vspace, start_out, stride_out, count_out, block_out); - printf(" start = [%llu, %llu, %llu] \n", (unsigned long long)start_out[0], - (unsigned long long)start_out[1], (unsigned long long)start_out[2]); - printf(" stride = [%llu, %llu, %llu] \n", (unsigned long long)stride_out[0], - (unsigned long long)stride_out[1], (unsigned long long)stride_out[2]); - printf(" count = [%llu, %llu, %llu] \n", (unsigned long long)count_out[0], - (unsigned long long)count_out[1], (unsigned long long)count_out[2]); - printf(" block = [%llu, %llu, %llu] \n", (unsigned long long)block_out[0], - (unsigned long long)block_out[1], (unsigned long long)block_out[2]); - } - } - /* Get source file name */ - len = H5Pget_virtual_filename(dcpl, (size_t)i, NULL, 0); - filename = (char *)malloc((size_t)len * sizeof(char) + 1); - H5Pget_virtual_filename(dcpl, (size_t)i, filename, len + 1); - printf(" Source filename %s\n", filename); - - /* Get source dataset name */ - len = H5Pget_virtual_dsetname(dcpl, (size_t)i, NULL, 0); - dsetname = (char *)malloc((size_t)len * sizeof(char) + 1); - H5Pget_virtual_dsetname(dcpl, (size_t)i, dsetname, len + 1); - printf(" Source dataset name %s\n", dsetname); - - /* Get selection in the source dataset */ - printf(" Selection in the source dataset \n"); - src_space = H5Pget_virtual_srcspace(dcpl, (size_t)i); - if (H5Sget_select_type(src_space) == H5S_SEL_HYPERSLABS) { - if (H5Sis_regular_hyperslab(vspace)) { - status = H5Sget_regular_hyperslab(src_space, start_out, stride_out, count_out, block_out); - printf(" start = [%llu, %llu, %llu] \n", (unsigned long long)start_out[0], - (unsigned long long)start_out[1], (unsigned long long)start_out[2]); - printf(" stride = [%llu, %llu, %llu] \n", (unsigned long long)stride_out[0], - (unsigned long long)stride_out[1], (unsigned long long)stride_out[2]); - printf(" count = [%llu, %llu, %llu] \n", (unsigned long long)count_out[0], - (unsigned long long)count_out[1], (unsigned long long)count_out[2]); - printf(" block = [%llu, %llu, %llu] \n", (unsigned long long)block_out[0], - (unsigned long long)block_out[1], (unsigned long long)block_out[2]); - } - } - H5Sclose(vspace); - H5Sclose(src_space); - free(filename); - free(dsetname); - } - /* EIP read data back */ - - /* - * Close and release resources. - */ - status = H5Pclose(dcpl); - status = H5Dclose(dset); - status = H5Fclose(file); - - return 0; -} |