HDF5 boost multi array transparent support

This commit is contained in:
Guilhem Lavaux 2014-05-20 16:16:46 +02:00
parent 1d59f4e93d
commit 47255ea25a
3 changed files with 243 additions and 0 deletions

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@ -34,6 +34,9 @@ target_link_libraries(testPool ${tolink})
if (HDF5_FOUND) if (HDF5_FOUND)
add_executable(testReadFlash testReadFlash.cpp) add_executable(testReadFlash testReadFlash.cpp)
target_link_libraries(testReadFlash ${tolink}) target_link_libraries(testReadFlash ${tolink})
add_executable(testHDF5 testHDF5.cpp)
target_link_libraries(testHDF5 ${tolink})
endif (HDF5_FOUND) endif (HDF5_FOUND)

65
sample/testHDF5.cpp Normal file
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@ -0,0 +1,65 @@
#include <iostream>
#include <H5Cpp.h>
#include "hdf5_array.hpp"
using namespace std;
int main()
{
typedef boost::multi_array<float, 2> array_type;
typedef boost::multi_array<float, 3> array3_type;
typedef boost::multi_array<std::complex<double>, 2> arrayc_type;
typedef array_type::index index;
H5::H5File f("test.h5", H5F_ACC_TRUNC);
H5::Group g = f.createGroup("test_group");
array_type A(boost::extents[2][3]);
array_type B;
array3_type C(boost::extents[2][3][4]);
arrayc_type D, E;
int values = 0;
for (index i = 0; i != 2; i++)
for (index j = 0; j != 3; j++)
A[i][j] = values++;
CosmoTool::hdf5_write_array(g, "test_data", A);
CosmoTool::hdf5_read_array(g, "test_data", B);
int verify = 0;
for (index i = 0; i != 2; i++)
for (index j = 0; j != 3; j++)
if (B[i][j] != verify++) {
std::cout << "Invalid array content" << endl;
abort();
}
try
{
CosmoTool::hdf5_read_array(g, "test_data", C);
std::cout << "Did not throw InvalidDimensions" << endl;
abort();
}
catch (const CosmoTool::InvalidDimensions&)
{}
D.resize(boost::extents[2][3]);
D = A;
CosmoTool::hdf5_write_array(g, "test_data_c", D);
CosmoTool::hdf5_read_array(g, "test_data_c", E);
verify = 0;
for (index i = 0; i != 2; i++)
for (index j = 0; j != 3; j++)
if (E[i][j].real() != verify++) {
std::cout << "Invalid array content" << endl;
abort();
}
return 0;
}

175
src/hdf5_array.hpp Normal file
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@ -0,0 +1,175 @@
#ifndef __COSMO_HDF5_ARRAY_HPP
#define __COSMO_HDF5_ARRAY_HPP
#include <string>
#include <stdint.h>
#include <boost/static_assert.hpp>
#include <boost/utility.hpp>
#include <boost/mpl/assert.hpp>
#include <boost/multi_array.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/type_traits/is_floating_point.hpp>
#include <vector>
#include <H5Cpp.h>
namespace CosmoTool {
//!_______________________________________________________________________________________
//!
//! map types to HDF5 types
//!
//!
//! Leo Goodstadt (04 March 2013), improved with enable_if by Guilhem Lavaux (May 2014)
//!_______________________________________________________________________________________
template<typename T, class Enable = void> struct get_hdf5_data_type
{
static H5::PredType type()
{
BOOST_MPL_ASSERT_MSG(0, Unknown_HDF5_data_type, ());
return H5::PredType::NATIVE_DOUBLE;
}
};
#define HDF5_TYPE(tl, thdf5) \
template<typename T> struct get_hdf5_data_type<T, typename boost::enable_if<boost::is_same<T, tl> >::type> \
{ static H5::PredType type() { return H5::PredType::thdf5; }; }
HDF5_TYPE(char , NATIVE_CHAR);
HDF5_TYPE(long long , NATIVE_LLONG);
HDF5_TYPE(unsigned long long, NATIVE_ULLONG);
HDF5_TYPE(int8_t , NATIVE_INT8);
HDF5_TYPE(uint8_t , NATIVE_UINT8);
HDF5_TYPE(int16_t , NATIVE_INT16);
HDF5_TYPE(uint16_t , NATIVE_UINT16);
HDF5_TYPE(int32_t , NATIVE_INT32);
HDF5_TYPE(uint32_t , NATIVE_UINT32);
HDF5_TYPE(int64_t , NATIVE_INT64);
HDF5_TYPE(uint64_t , NATIVE_UINT64);
HDF5_TYPE(float , NATIVE_FLOAT);
HDF5_TYPE(double , NATIVE_DOUBLE);
HDF5_TYPE(long double , NATIVE_LDOUBLE);
#undef HDF5_TYPE
//!_______________________________________________________________________________________
//!
//! write_hdf5 multi_array
//!
//! \author leo Goodstadt (04 March 2013)
//!
//!_______________________________________________________________________________________
template<typename T, std::size_t DIMENSIONS, typename hdf5_data_type>
void hdf5_write_array(H5::CommonFG& fg, const std::string& data_set_name,
const boost::multi_array<T, DIMENSIONS>& data,
const hdf5_data_type& datatype)
{
std::vector<hsize_t> dimensions(data.shape(), data.shape() + DIMENSIONS);
H5::DataSpace dataspace(DIMENSIONS, dimensions.data());
H5::DataSet dataset = fg.createDataSet(data_set_name, datatype, dataspace);
dataset.write(data.data(), datatype);
}
/* HDF5 complex type */
template<typename T>
class hdf5_ComplexType
{
public:
H5::CompType type;
hdf5_ComplexType()
: type(sizeof(std::complex<T>))
{
get_hdf5_data_type<T> hdf_data_type;
type.insertMember("r", 0, hdf_data_type.type());
type.insertMember("i", sizeof(T), hdf_data_type.type());
type.pack();
}
static const hdf5_ComplexType<T> *ctype()
{
static hdf5_ComplexType<T> singleton;
return &singleton;
}
};
template<typename T, std::size_t DIMENSIONS>
void hdf5_write_array(H5::CommonFG& fg, const std::string& data_set_name, const boost::multi_array<T, DIMENSIONS>& data )
{
get_hdf5_data_type<T> hdf_data_type;
hdf5_write_array(fg, data_set_name, data, hdf_data_type.type());
}
template<typename T, std::size_t DIMENSIONS>
void hdf5_write_array(H5::CommonFG& fg, const std::string& data_set_name, const boost::multi_array<std::complex<T>, DIMENSIONS>& data )
{
hdf5_write_array(fg, data_set_name, data, hdf5_ComplexType<T>::ctype()->type);
}
// HDF5 array reader
//
// Author Guilhem Lavaux (May 2014)
class InvalidDimensions: virtual std::exception {
};
template<std::size_t r>
struct hdf5_extent_gen {
typedef typename boost::detail::multi_array::extent_gen<r> type;
static inline type build(hsize_t *d)
{
return (hdf5_extent_gen<r-1>::build(d))[d[r-1]];
}
};
template<>
struct hdf5_extent_gen<0> {
static inline boost::multi_array_types::extent_gen build(hsize_t *d)
{
return boost::extents;
}
};
template<typename T, std::size_t DIMENSIONS, typename hdf5_data_type>
void hdf5_read_array(H5::CommonFG& fg, const std::string& data_set_name,
boost::multi_array<T, DIMENSIONS>& data,
const hdf5_data_type& datatype)
{
H5::DataSet dataset = fg.openDataSet(data_set_name);
H5::DataSpace dataspace = dataset.getSpace();
std::vector<hsize_t> dimensions(DIMENSIONS);
if (dataspace.getSimpleExtentNdims() != DIMENSIONS)
{
throw InvalidDimensions();
}
dataspace.getSimpleExtentDims(dimensions.data());
data.resize(hdf5_extent_gen<DIMENSIONS>::build(dimensions.data()));
dataset.read(data.data(), datatype);
}
template<typename T, std::size_t DIMENSIONS>
void hdf5_read_array(H5::CommonFG& fg, const std::string& data_set_name, boost::multi_array<T, DIMENSIONS>& data )
{
get_hdf5_data_type<T> hdf_data_type;
hdf5_read_array(fg, data_set_name, data, hdf_data_type.type());
}
template<typename T, std::size_t DIMENSIONS>
void hdf5_read_array(H5::CommonFG& fg, const std::string& data_set_name, boost::multi_array<std::complex<T>, DIMENSIONS>& data )
{
hdf5_read_array(fg, data_set_name, data, hdf5_ComplexType<T>::ctype()->type);
}
};
#endif