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2ea165efd0
* Modify temporary rpath for testing in java example scripts.
* Update URL in source file Copyright headers for web copy of COPYING
file - files not in src or test.
130 lines
3.5 KiB
C
130 lines
3.5 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 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 program shows the concept of "mounting files".
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* Program creates one file with group G in it, and another
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* file with dataset D. Then second file is mounted in the first one
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* under the "mounting point" G. Dataset D is accessed in the first file
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* under name /G/D and data is printed out.
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*/
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#include "hdf5.h"
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#define FILE1 "mount1.h5"
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#define FILE2 "mount2.h5"
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#define RANK 2
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#define NX 4
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#define NY 5
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int
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main(void)
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{
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hid_t fid1, fid2, gid; /* Files and group identifiers */
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hid_t did, tid, sid; /* Dataset and datatype identifiers */
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herr_t status;
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hsize_t dims[] = {NX, NY}; /* Dataset dimensions */
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int i, j;
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int bm[NX][NY], bm_out[NX][NY]; /* Data buffers */
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/*
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* Initialization of buffer matrix "bm"
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*/
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for (i = 0; i < NX; i++)
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for (j = 0; j < NY; j++)
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bm[i][j] = i + j;
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/*
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* Create first file and a group in it.
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*/
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fid1 = H5Fcreate(FILE1, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
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gid = H5Gcreate2(fid1, "/G", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
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/*
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* Close group and file
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*/
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H5Gclose(gid);
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H5Fclose(fid1);
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/*
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* Create second file and dataset "D" in it.
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*/
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fid2 = H5Fcreate(FILE2, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
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dims[0] = NX;
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dims[1] = NY;
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sid = H5Screate_simple(RANK, dims, NULL);
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did = H5Dcreate2(fid2, "D", H5T_NATIVE_INT, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
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/*
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* Write data to the dataset.
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*/
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status = H5Dwrite(did, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, bm);
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/*
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* Close all identifiers.
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*/
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H5Sclose(sid);
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H5Dclose(did);
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H5Fclose(fid2);
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/*
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* Reopen both files
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*/
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fid1 = H5Fopen(FILE1, H5F_ACC_RDONLY, H5P_DEFAULT);
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fid2 = H5Fopen(FILE2, H5F_ACC_RDONLY, H5P_DEFAULT);
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/*
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* Mount second file under G in the first file.
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*/
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H5Fmount(fid1, "/G", fid2, H5P_DEFAULT);
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/*
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* Access dataset D in the first file under /G/D name.
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*/
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did = H5Dopen2(fid1, "/G/D", H5P_DEFAULT);
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tid = H5Dget_type(did);
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status = H5Dread(did, tid, H5S_ALL, H5S_ALL, H5P_DEFAULT, bm_out);
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/*
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* Print out the data.
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*/
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for (i = 0; i < NX; i++) {
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for (j = 0; j < NY; j++)
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printf(" %d", bm_out[i][j]);
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printf("\n");
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}
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/*
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* Close all identifers
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*/
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H5Tclose(tid);
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H5Dclose(did);
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/*
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* Unmounting second file
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*/
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H5Funmount(fid1, "/G");
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/*
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* Close both files
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*/
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H5Fclose(fid1);
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H5Fclose(fid2);
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return 0;
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}
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