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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include <string>
#include "H5Include.h"
#include "H5Exception.h"
#include "H5IdComponent.h"
#include "H5DataSpace.h"
#include "H5PropList.h"
#include "H5LaccProp.h"
#include "H5DaccProp.h"
namespace H5 {
#ifndef DOXYGEN_SHOULD_SKIP_THIS
// This DOXYGEN_SHOULD_SKIP_THIS block is a work-around approach to control
// the order of creation and deletion of the global constants. See Design Notes
// in "H5PredType.cpp" for information.
// Initialize a pointer for the constant
DSetAccPropList *DSetAccPropList::DEFAULT_ = 0;
//--------------------------------------------------------------------------
// Function: DSetAccPropList::getConstant
// Purpose: Creates a DSetAccPropList object representing the HDF5
// constant H5P_DATASET_ACCESS, pointed to by
// DSetAccPropList::DEFAULT_
// exception H5::PropListIException
// Description
// If DSetAccPropList::DEFAULT_ already points to an allocated
// object, throw a PropListIException. This scenario should
// not happen.
//--------------------------------------------------------------------------
DSetAccPropList *
DSetAccPropList::getConstant()
{
// Tell the C library not to clean up, H5Library::termH5cpp will call
// H5close - more dependency if use H5Library::dontAtExit()
if (!IdComponent::H5dontAtexit_called) {
(void)H5dont_atexit();
IdComponent::H5dontAtexit_called = true;
}
// If the constant pointer is not allocated, allocate it. Otherwise,
// throw because it shouldn't be.
if (DEFAULT_ == 0)
DEFAULT_ = new DSetAccPropList(H5P_DATASET_ACCESS);
else
throw PropListIException("DSetAccPropList::getConstant",
"DSetAccPropList::getConstant is being invoked on an allocated DEFAULT_");
return (DEFAULT_);
}
//--------------------------------------------------------------------------
// Function: DSetAccPropList::deleteConstants
// Purpose: Deletes the constant object that DSetAccPropList::DEFAULT_
// points to.
//--------------------------------------------------------------------------
void
DSetAccPropList::deleteConstants()
{
delete DEFAULT_;
}
//--------------------------------------------------------------------------
// Purpose Constant for dataset creation default property
//--------------------------------------------------------------------------
const DSetAccPropList &DSetAccPropList::DEFAULT = *getConstant();
#endif // DOXYGEN_SHOULD_SKIP_THIS
//--------------------------------------------------------------------------
// Function: DSetAccPropList default constructor
///\brief Default constructor: creates a stub dataset creation property list
//--------------------------------------------------------------------------
DSetAccPropList::DSetAccPropList() : LinkAccPropList(H5P_DATASET_ACCESS)
{
}
//--------------------------------------------------------------------------
// Function: DSetAccPropList copy constructor
///\brief Copy constructor: same HDF5 object as \a original
/// DSetAccPropList object
//--------------------------------------------------------------------------
DSetAccPropList::DSetAccPropList(const DSetAccPropList &orig) : LinkAccPropList(orig)
{
}
//--------------------------------------------------------------------------
// Function: DSetAccPropList overloaded constructor
///\brief Creates a DSetAccPropList object using the id of an
/// existing dataset creation property list.
//--------------------------------------------------------------------------
DSetAccPropList::DSetAccPropList(const hid_t plist_id) : LinkAccPropList(plist_id)
{
}
//--------------------------------------------------------------------------
// Function: DSetAccPropList::setChunkCache
///\brief Sets the raw data chunk cache parameters.
///\param rdcc_nslots - IN: Number of chunk slots in the raw data chunk cache
///\param rdcc_nbytes - IN: Total size of the raw data chunk cache
///\param rdcc_w0 - IN: The chunk preemption policy for this dataset
///\exception H5::PropListIException
///\par Description
/// The raw data chunk cache parameters includes the number of
/// objects in the meta data cache and the maximum number of
/// chunks and bytes in the raw data chunk cache. Once set,
/// these values will override the values in the file access
/// property list.
///
/// For information, please refer to the H5Pset_chunk_cache API in
/// the HDF5 C Reference Manual.
// July 2018
//--------------------------------------------------------------------------
void
DSetAccPropList::setChunkCache(size_t rdcc_nslots, size_t rdcc_nbytes, double rdcc_w0) const
{
herr_t ret_value = H5Pset_chunk_cache(id, rdcc_nslots, rdcc_nbytes, rdcc_w0);
if (ret_value < 0) {
throw PropListIException("DSetAccPropList::setChunkCache", "H5Pset_chunk_cache failed");
}
}
//--------------------------------------------------------------------------
// Function: DSetAccPropList::getChunkCache
///\brief Retrieves the raw data chunk cache parameters.
///\param rdcc_nslots - OUT: Number of chunk slots in the raw data chunk cache
///\param rdcc_nbytes - OUT: Total size of the raw data chunk cache
///\param rdcc_w0 - OUT: The chunk preemption policy for this dataset
///\exception H5::PropListIException
///\par Description
/// For information, please refer to the H5Pget_chunk_cache API in
/// the HDF5 C Reference Manual.
// July 2018
//--------------------------------------------------------------------------
void
DSetAccPropList::getChunkCache(size_t &rdcc_nslots, size_t &rdcc_nbytes, double &rdcc_w0) const
{
herr_t ret_value = H5Pget_chunk_cache(id, &rdcc_nslots, &rdcc_nbytes, &rdcc_w0);
if (ret_value < 0) {
throw PropListIException("DSetAccPropList::getChunkCache", "H5Pget_chunk_cache failed");
}
}
} // namespace H5
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