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/* -*- c-file-style: "stroustrup" -*- */
#include "hdf5.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
int
main(void)
{
int ret_val = EXIT_SUCCESS;
//! <!-- [create] -->
{
__label__ fail_dcpl;
hid_t dcpl;
// create an ID of a pre-defined ID type
if ((dcpl = H5Pcreate(H5P_DATASET_XFER)) == H5I_INVALID_HID) {
ret_val = EXIT_FAILURE;
goto fail_dcpl;
}
// we can reliably predict the ID type
assert(H5Iget_type(dcpl) == H5I_GENPROP_LST);
printf("%d\n", H5Iget_type(dcpl));
H5Pclose(dcpl);
fail_dcpl:;
}
//! <!-- [create] -->
//! <!-- [read] -->
{
__label__ fail_dcpl;
hid_t dcpl;
// create an ID of a pre-defined ID type
if ((dcpl = H5Pcreate(H5P_DATASET_XFER)) == H5I_INVALID_HID) {
ret_val = EXIT_FAILURE;
goto fail_dcpl;
}
// this better be valid
assert(H5Iis_valid(dcpl) > 0);
// this ID is NOT associated with any HDF5 file;
// see the error message
assert(H5Iget_file_id(dcpl) == H5I_INVALID_HID);
H5Pclose(dcpl);
fail_dcpl:;
}
//! <!-- [read] -->
//! <!-- [update] -->
{
__label__ fail_rc, fail_dcpl;
hid_t dcpl;
int rc;
// create an ID of a pre-defined ID type
if ((dcpl = H5Pcreate(H5P_DATASET_XFER)) == H5I_INVALID_HID) {
ret_val = EXIT_FAILURE;
goto fail_dcpl;
}
// retrieve the IDs reference count
if ((rc = H5Iget_ref(dcpl)) < 0) {
ret_val = EXIT_FAILURE;
goto fail_rc;
}
printf("Reference count: %d\n", rc);
// bump its reference count (by 1)
if ((rc = H5Iinc_ref(dcpl)) < 0) {
ret_val = EXIT_FAILURE;
goto fail_rc;
}
printf("Reference count: %d\n", rc);
fail_rc:
H5Pclose(dcpl);
fail_dcpl:;
}
//! <!-- [update] -->
//! <!-- [delete] -->
{
__label__ fail_rc, fail_dcpl;
hid_t dcpl;
int rc;
// create an ID of a pre-defined ID type
if ((dcpl = H5Pcreate(H5P_DATASET_XFER)) == H5I_INVALID_HID) {
ret_val = EXIT_FAILURE;
goto fail_dcpl;
}
// decrease its reference count (from 1) to 0
if ((rc = H5Idec_ref(dcpl)) < 0) {
ret_val = EXIT_FAILURE;
goto fail_rc;
}
printf("Reference count: %d\n", rc);
// at this point, the ID is no longer valid
assert(H5Iis_valid(dcpl) == 0);
// dropping the ref. count to 0 has the side-effect of closing
// the associated item, and calling H5Pclose would create an error
goto fail_dcpl;
fail_rc:
H5Pclose(dcpl);
fail_dcpl:;
}
//! <!-- [delete] -->
//! <!-- [create_ud] -->
herr_t free_func(void *obj)
{
printf("Calling free_func...\n");
H5free_memory(obj);
return 0;
}
{
__label__ fail_id, fail_obj, fail_register;
H5I_type_t type;
int * obj;
hid_t obj_id;
// register a new ID type
if ((type = H5Iregister_type(128, 1024, &free_func)) < 0) {
ret_val = EXIT_FAILURE;
goto fail_register;
}
printf("New identifier type ID: %d\n", type);
// create a new object
if ((obj = H5allocate_memory(10 * sizeof(int), 0)) == NULL) {
ret_val = EXIT_FAILURE;
goto fail_obj;
}
// obtain an ID for the new object
if ((obj_id = H5Iregister(type, obj)) == H5I_INVALID_HID) {
ret_val = EXIT_FAILURE;
goto fail_id;
}
printf("New object identifier: %ld\n", obj_id);
fail_id:
H5Iclear_type(type, 1);
fail_obj:
H5Idestroy_type(type);
fail_register:;
}
//! <!-- [create_ud] -->
//! <!-- [read_ud] -->
{
__label__ fail_query, fail_register;
H5I_type_t type;
hsize_t count;
// register a new ID type
if ((type = H5Iregister_type(128, 1024, NULL)) < 0) {
ret_val = EXIT_FAILURE;
goto fail_register;
}
printf("New FOO identifier type ID: %d\n", type);
// return the number of identifiers of TYPE currently in use
if (H5Inmembers(type, &count) < 0) {
ret_val = EXIT_FAILURE;
goto fail_query;
}
printf("%llu FOO identifiers in use\n", count);
fail_query:
H5Idestroy_type(type);
fail_register:;
}
//! <!-- [read_ud] -->
//! <!-- [update_ud] -->
{
__label__ fail_id, fail_register;
H5I_type_t type;
int obj = 42;
hid_t obj_id;
// register a new ID type
if ((type = H5Iregister_type(128, 1024, NULL)) < 0) {
ret_val = EXIT_FAILURE;
goto fail_register;
}
printf("New identifier type ID: %d\n", type);
// obtain an ID for the new object
if ((obj_id = H5Iregister(type, &obj)) == H5I_INVALID_HID) {
ret_val = EXIT_FAILURE;
goto fail_id;
}
printf("New object identifier: %ld\n", obj_id);
// bump the reference count
assert(H5Iinc_ref(obj_id) == 2);
// force the deletion of all IDs regardless of reference count
H5Iclear_type(type, 1);
fail_id:
H5Idestroy_type(type);
fail_register:;
}
//! <!-- [update_ud] -->
//! <!-- [delete_ud] -->
{
__label__ fail_register;
H5I_type_t type;
// register a new ID type
if ((type = H5Iregister_type(128, 1024, NULL)) < 0) {
ret_val = EXIT_FAILURE;
goto fail_register;
}
printf("New identifier type ID: %d\n", type);
// decrementing the identifier type's ref. count to 0 triggers
// the type to be destroyed
assert(H5Idec_type_ref(type) == 0);
fail_register:;
}
//! <!-- [delete_ud] -->
return ret_val;
}
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