mirror of
https://github.com/HDFGroup/hdf5.git
synced 2024-12-09 07:32:32 +08:00
5ed255a607
* Fixed various -Wincompatible-pointer-types-discards-qualifiers warnings by adding const * Fixed various -Wincompatible-pointer-types-discards-qualifiers warning by removing extraneous consts There were casts with const, but the function parameter doesn't actaully take const, so just modified the casts. In the other case, a local variable was const that should not have been, becuase its source wasn't const either. * Fixed a -Wincompatible-pointer-types-discards-qualifiers warning by strdup-ing a string Create a duplicate string instead of mutating a supposedly const one.
93 lines
3.7 KiB
C
93 lines
3.7 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
|
|
* 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. *
|
|
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
|
|
|
|
/*
|
|
* The example below illustrates the use of the new API with files that are
|
|
* opened read-only. Created references to the objects in that file are
|
|
* stored into a separate file, and accessed from that file, without the user
|
|
* explicitly opening the original file that was referenced.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "hdf5.h"
|
|
#include <assert.h>
|
|
|
|
#define H5FILE_NAME1 "refer_extern1.h5"
|
|
#define H5FILE_NAME2 "refer_extern2.h5"
|
|
|
|
#define NDIMS 1 /* Number of dimensions */
|
|
#define BUF_SIZE 4 /* Size of example buffer */
|
|
#define NREFS 1 /* Number of references */
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
hid_t file1, dset1, space1;
|
|
hsize_t dset1_dims[NDIMS] = {BUF_SIZE};
|
|
int dset_buf[BUF_SIZE];
|
|
|
|
hid_t file2, dset2, space2;
|
|
hsize_t dset2_dims[NDIMS] = {NREFS};
|
|
H5R_ref_t ref_buf[NREFS] = {0};
|
|
H5O_type_t obj_type;
|
|
int i;
|
|
|
|
for (i = 0; i < BUF_SIZE; i++)
|
|
dset_buf[i] = i;
|
|
|
|
/* Create file with one dataset and close it */
|
|
file1 = H5Fcreate(H5FILE_NAME1, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
|
|
space1 = H5Screate_simple(NDIMS, dset1_dims, NULL);
|
|
dset1 = H5Dcreate2(file1, "dataset1", H5T_NATIVE_INT, space1, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
|
|
H5Dwrite(dset1, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset_buf);
|
|
H5Dclose(dset1);
|
|
H5Sclose(space1);
|
|
H5Fclose(file1);
|
|
|
|
/* Create reference to dataset1 in "refer_extern1.h5" */
|
|
file1 = H5Fopen(H5FILE_NAME1, H5F_ACC_RDONLY, H5P_DEFAULT);
|
|
H5Rcreate_object(file1, "dataset1", H5P_DEFAULT, &ref_buf[0]);
|
|
H5Fclose(file1);
|
|
|
|
/* Store reference in dataset in separate file "refer_extern2.h5" */
|
|
file2 = H5Fcreate(H5FILE_NAME2, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
|
|
space2 = H5Screate_simple(NDIMS, dset2_dims, NULL);
|
|
dset2 = H5Dcreate2(file2, "references", H5T_STD_REF, space2, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
|
|
H5Dwrite(dset2, H5T_STD_REF, H5S_ALL, H5S_ALL, H5P_DEFAULT, ref_buf);
|
|
H5Dclose(dset2);
|
|
H5Sclose(space2);
|
|
H5Fclose(file2);
|
|
H5Rdestroy(&ref_buf[0]);
|
|
|
|
/* Read reference back from "refer_extern2.h5" */
|
|
file2 = H5Fopen(H5FILE_NAME2, H5F_ACC_RDONLY, H5P_DEFAULT);
|
|
dset2 = H5Dopen2(file2, "references", H5P_DEFAULT);
|
|
H5Dread(dset2, H5T_STD_REF, H5S_ALL, H5S_ALL, H5P_DEFAULT, ref_buf);
|
|
H5Dclose(dset2);
|
|
H5Fclose(file2);
|
|
|
|
/* Access reference and read dataset data without opening original file */
|
|
assert(H5Rget_type((const H5R_ref_t *)&ref_buf[0]) == H5R_OBJECT2);
|
|
H5Rget_obj_type3(&ref_buf[0], H5P_DEFAULT, &obj_type);
|
|
assert(obj_type == H5O_TYPE_DATASET);
|
|
dset1 = H5Ropen_object(&ref_buf[0], H5P_DEFAULT, H5P_DEFAULT);
|
|
H5Dread(dset1, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset_buf);
|
|
H5Dclose(dset1);
|
|
H5Rdestroy(&ref_buf[0]);
|
|
|
|
for (i = 0; i < BUF_SIZE; i++)
|
|
assert(dset_buf[i] == i);
|
|
|
|
return 0;
|
|
}
|