dd5b8a8747
* HDFFV-10865 - merge from dev, HDFArray perf fix. * Remove duplicate setting * Whitespace changes after clang format * Undo version 11 clang format changes * Merge CMake changes from develop * test testing script merge from develop * Update supported platforms * PR#3 merge from develop * Merge gcc 10 diagnostics option from develop * Merge #318 OSX changes from develop * Merge small changes from develop * Minor non-space formatting changes * #386 copyright corrections for java folder * Merges from develop #358 patches from vtk #361 fix header guard spelling * Merge updates #358 patches from vtk #361 fix header guard spelling * format fix * Fix missing underscore and make H5public.h closer to dev * Merges from develop #340 clang -Wformat-security warnings #360 Fixed uninitialized warnings header guard underscore cleanup JNI cleanup * format alignment * Add missing test ref file * Merge #380 from develop * Finish java merges from develop * Fix java issues with tests and javadoc * Correct use of attribute access plist * Remove debug code * Remove unused variable * Change file access to read only for java tests * Split clang format operations. * More javadoc comments * Remove pre-split setting * format source
299 lines
11 KiB
Java
299 lines
11 KiB
Java
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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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 COPYING file, which can be found at the root of the source code *
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* distribution tree, or in https://www.hdfgroup.org/licenses. *
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* If you do not have access to either file, you may request a copy from *
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* help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/************************************************************
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This example shows how to set the space allocation time
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for a dataset. The program first creates two datasets,
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one with the default allocation time (late) and one with
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early allocation time, and displays whether each has been
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allocated and their allocation size. Next, it writes data
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to the datasets, and again displays whether each has been
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allocated and their allocation size.
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************************************************************/
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package examples.datasets;
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import java.util.EnumSet;
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import java.util.HashMap;
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import java.util.Map;
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import hdf.hdf5lib.H5;
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import hdf.hdf5lib.HDF5Constants;
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public class H5Ex_D_Alloc {
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private static String FILENAME = "H5Ex_D_Alloc.h5";
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private static String DATASETNAME1 = "DS1";
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private static String DATASETNAME2 = "DS2";
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private static final int DIM_X = 4;
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private static final int DIM_Y = 7;
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private static final int FILLVAL = 99;
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private static final int RANK = 2;
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// Values for the status of space allocation
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enum H5D_space_status {
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H5D_SPACE_STATUS_ERROR(-1), H5D_SPACE_STATUS_NOT_ALLOCATED(0), H5D_SPACE_STATUS_PART_ALLOCATED(1), H5D_SPACE_STATUS_ALLOCATED(
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2);
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private static final Map<Integer, H5D_space_status> lookup = new HashMap<Integer, H5D_space_status>();
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static {
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for (H5D_space_status s : EnumSet.allOf(H5D_space_status.class))
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lookup.put(s.getCode(), s);
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}
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private int code;
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H5D_space_status(int space_status) {
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this.code = space_status;
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}
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public int getCode() {
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return this.code;
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}
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public static H5D_space_status get(int code) {
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return lookup.get(code);
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}
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}
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private static void allocation() {
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long file_id = HDF5Constants.H5I_INVALID_HID;
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long filespace_id = HDF5Constants.H5I_INVALID_HID;
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long dataset_id1 = HDF5Constants.H5I_INVALID_HID;
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long dataset_id2 = HDF5Constants.H5I_INVALID_HID;
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long dcpl_id = HDF5Constants.H5I_INVALID_HID;
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long[] dims = { DIM_X, DIM_Y };
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int[][] dset_data = new int[DIM_X][DIM_Y];
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int space_status = 0;
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long storage_size = 0;
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// Initialize the dataset.
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for (int indx = 0; indx < DIM_X; indx++)
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for (int jndx = 0; jndx < DIM_Y; jndx++)
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dset_data[indx][jndx] = FILLVAL;
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// Create a file using default properties.
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try {
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file_id = H5.H5Fcreate(FILENAME, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT,
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HDF5Constants.H5P_DEFAULT);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Create dataspace. Setting maximum size to NULL sets the maximum
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// size to be the current size.
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try {
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filespace_id = H5.H5Screate_simple(RANK, dims, null);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Create the dataset creation property list, and set the chunk size.
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try {
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dcpl_id = H5.H5Pcreate(HDF5Constants.H5P_DATASET_CREATE);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Set the allocation time to "early". This way we can be sure
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// that reading from the dataset immediately after creation will
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// return the fill value.
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try {
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if (dcpl_id >= 0)
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H5.H5Pset_alloc_time(dcpl_id, HDF5Constants.H5D_ALLOC_TIME_EARLY);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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System.out.println("Creating datasets...");
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System.out.println(DATASETNAME1 + " has allocation time H5D_ALLOC_TIME_LATE");
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System.out.println(DATASETNAME2 + " has allocation time H5D_ALLOC_TIME_EARLY");
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System.out.println();
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// Create the dataset using the dataset default creation property list.
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try {
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if ((file_id >= 0) && (filespace_id >= 0))
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dataset_id1 = H5.H5Dcreate(file_id, DATASETNAME1, HDF5Constants.H5T_NATIVE_INT, filespace_id,
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HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Create the dataset using the dataset creation property list.
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try {
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if ((file_id >= 0) && (filespace_id >= 0) && (dcpl_id >= 0))
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dataset_id2 = H5.H5Dcreate(file_id, DATASETNAME2, HDF5Constants.H5T_NATIVE_INT, filespace_id,
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HDF5Constants.H5P_DEFAULT, dcpl_id, HDF5Constants.H5P_DEFAULT);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Retrieve and print space status and storage size for dset1.
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try {
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if (dataset_id1 >= 0)
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space_status = H5.H5Dget_space_status(dataset_id1);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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try {
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if (dataset_id1 >= 0)
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storage_size = H5.H5Dget_storage_size(dataset_id1);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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String the_space = " ";
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if (H5D_space_status.get(space_status) != H5D_space_status.H5D_SPACE_STATUS_ALLOCATED)
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the_space += "not ";
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System.out.println("Space for " + DATASETNAME1 + " has" + the_space + "been allocated.");
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System.out.println("Storage size for " + DATASETNAME1 + " is: " + storage_size + " bytes.");
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// Retrieve and print space status and storage size for dset2.
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try {
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if (dataset_id2 >= 0)
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space_status = H5.H5Dget_space_status(dataset_id2);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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try {
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if (dataset_id2 >= 0)
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storage_size = H5.H5Dget_storage_size(dataset_id2);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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the_space = " ";
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if (H5D_space_status.get(space_status) != H5D_space_status.H5D_SPACE_STATUS_ALLOCATED)
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the_space += "not ";
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System.out.println("Space for " + DATASETNAME2 + " has" + the_space + "been allocated.");
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System.out.println("Storage size for " + DATASETNAME2 + " is: " + storage_size + " bytes.");
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System.out.println();
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System.out.println("Writing data...");
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System.out.println();
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// Write the data to the datasets.
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try {
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if (dataset_id1 >= 0)
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H5.H5Dwrite(dataset_id1, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
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HDF5Constants.H5P_DEFAULT, dset_data[0]);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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try {
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if (dataset_id2 >= 0)
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H5.H5Dwrite(dataset_id2, HDF5Constants.H5T_NATIVE_INT, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
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HDF5Constants.H5P_DEFAULT, dset_data[0]);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Retrieve and print space status and storage size for dset1.
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try {
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if (dataset_id1 >= 0)
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space_status = H5.H5Dget_space_status(dataset_id1);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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try {
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if (dataset_id1 >= 0)
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storage_size = H5.H5Dget_storage_size(dataset_id1);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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the_space = " ";
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if (H5D_space_status.get(space_status) != H5D_space_status.H5D_SPACE_STATUS_ALLOCATED)
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the_space += "not ";
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System.out.println("Space for " + DATASETNAME1 + " has" + the_space + "been allocated.");
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System.out.println("Storage size for " + DATASETNAME1 + " is: " + storage_size + " bytes.");
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// Retrieve and print space status and storage size for dset2.
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try {
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if (dataset_id2 >= 0)
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space_status = H5.H5Dget_space_status(dataset_id2);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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try {
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if (dataset_id2 >= 0)
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storage_size = H5.H5Dget_storage_size(dataset_id2);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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the_space = " ";
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if (H5D_space_status.get(space_status) != H5D_space_status.H5D_SPACE_STATUS_ALLOCATED)
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the_space += "not ";
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System.out.println("Space for " + DATASETNAME2 + " has" + the_space + "been allocated.");
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System.out.println("Storage size for " + DATASETNAME2 + " is: " + storage_size + " bytes.");
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System.out.println();
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// End access to the dataset and release resources used by it.
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try {
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if (dcpl_id >= 0)
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H5.H5Pclose(dcpl_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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try {
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if (dataset_id1 >= 0)
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H5.H5Dclose(dataset_id1);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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try {
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if (dataset_id2 >= 0)
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H5.H5Dclose(dataset_id2);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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try {
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if (filespace_id >= 0)
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H5.H5Sclose(filespace_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Close the file.
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try {
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if (file_id >= 0)
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H5.H5Fclose(file_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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}
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public static void main(String[] args) {
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H5Ex_D_Alloc.allocation();
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}
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}
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