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arrays: clean h5 code

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- c++11 cleaning, more doc.
- clean the array_stack and its doc.
This commit is contained in:
Olivier Parcollet 2013-11-03 18:56:19 +01:00
parent 899210ff53
commit fa6f991473
3 changed files with 273 additions and 261 deletions
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170
triqs/arrays/h5/array_stack.hpp
View File

@ -2,7 +2,7 @@
* *
* TRIQS: a Toolbox for Research in Interacting Quantum Systems * TRIQS: a Toolbox for Research in Interacting Quantum Systems
* *
* Copyright (C) 2011 by O. Parcollet * Copyright (C) 2011-2013 by O. Parcollet
* *
* TRIQS is free software: you can redistribute it and/or modify it under the * TRIQS is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software * terms of the GNU General Public License as published by the Free Software
@ -24,38 +24,14 @@
#include <triqs/h5.hpp> #include <triqs/h5.hpp>
#include "./simple_read_write.hpp" #include "./simple_read_write.hpp"
namespace triqs { namespace arrays { namespace triqs {
namespace arrays {
namespace h5_stack_details { // to be replaced by ellipsis
template<class T, size_t N, ull_t Opt> array_view<T,N-1,Opt> slice0( array<T,N,Opt> & A, size_t ind);
#define AUX(z,p,unused) BOOST_PP_COMMA_IF(p) range()
#define IMPL(z, NN, unused) \
template<class T, ull_t Opt> array_view<T,BOOST_PP_INC(NN),Opt> slice0( array<T,BOOST_PP_INC(NN)+1,Opt> & A, size_t ind) {\
return A(ind,BOOST_PP_REPEAT(BOOST_PP_INC(NN),AUX,nil));}
BOOST_PP_REPEAT(ARRAY_NRANK_MAX , IMPL, nil);
#undef IMPL
#undef AUX
template<class T, ull_t Opt> T & slice0( array<T,1,Opt> & A, size_t ind) { return A(ind);}
template<typename B, typename Enable = void> struct get_value_type { typedef B type; static const size_t rank = 0;};
template<typename B> struct get_value_type<B, typename boost::enable_if<is_amv_value_class<B> >::type > {
typedef typename B::value_type type;static const size_t rank = B::rank;};
}
/** /**
* \brief Hdf5 array stack * The implementation class
* \tparam BaseElementType The type of the base element of the stack. Can be an array/matrix/vector or a scalar.
* If it in a scalar, the array_stack will write an hdf5 array of dimension 1
* If it in an array/matrix/vector, the array_stack will write an hdf5 array of dimension BaseElementType::rank +1
*
*/ */
template< typename BaseElementType> template <typename T, int R> class array_stack_impl {
class array_stack { static const size_t dim = R;
typedef BaseElementType base_element_type;
static_assert( (is_amv_value_class<BaseElementType>::value || is_scalar<BaseElementType>::value), "BaseElementType must be an array/matrix/vector or a simple number");
typedef typename h5_stack_details::get_value_type<BaseElementType>::type T;
static const size_t dim = h5_stack_details::get_value_type<BaseElementType>::rank;
static const bool base_is_array = dim > 0; static const bool base_is_array = dim > 0;
size_t bufsize_, step, _size; size_t bufsize_, step, _size;
static const bool T_is_complex = boost::is_complex<T>::value; static const bool T_is_complex = boost::is_complex<T>::value;
@ -64,18 +40,33 @@ namespace triqs { namespace arrays {
H5::DataSet dataset; H5::DataSet dataset;
array<T, dim + 1> buffer; array<T, dim + 1> buffer;
template <typename FileGroupType > public:
void construct_delegate ( FileGroupType g, std::string const & name, mini_vector<size_t,dim> const & a_dims, size_t bufsize) { array_stack_impl(h5::group g, std::string const &name, mini_vector<size_t, dim> const &base_element_shape, size_t bufsize) {
mini_vector<hsize_t, RANK> dim_chunk; mini_vector<hsize_t, RANK> dim_chunk;
bufsize_ = bufsize; step = 0; _size =0; bufsize_ = bufsize;
for (size_t i =1; i<=dim; ++i) { dims[i] = a_dims[i-1];} step = 0;
if (T_is_complex) { dims[RANK-1] =2; } _size = 0;
maxdims = dims; buffer_dim = dims; dim_chunk = dims; for (size_t i = 1; i <= dim; ++i) {
dims[0] = 0; maxdims[0] = H5S_UNLIMITED; dim_chunk[0]=1; buffer_dim[0] = bufsize_; dims[i] = base_element_shape[i - 1];
mini_vector<size_t,dim+1> s; for (size_t i =0; i<=dim; ++i) {s[i] = buffer_dim[i];} }
if (T_is_complex) {
dims[RANK - 1] = 2;
}
maxdims = dims;
buffer_dim = dims;
dim_chunk = dims;
dims[0] = 0;
maxdims[0] = H5S_UNLIMITED;
dim_chunk[0] = 1;
buffer_dim[0] = bufsize_;
mini_vector<size_t, dim + 1> s;
for (size_t i = 0; i <= dim; ++i) {
s[i] = buffer_dim[i];
}
buffer.resize(s); buffer.resize(s);
H5::DataSpace mspace1(RANK, dims.ptr(), maxdims.ptr()); H5::DataSpace mspace1(RANK, dims.ptr(), maxdims.ptr());
H5::DSetCreatPropList cparms; cparms.setChunk( RANK, dim_chunk.ptr() ); // Modify dataset creation properties, i.e. enable chunking. H5::DSetCreatPropList cparms;
cparms.setChunk(RANK, dim_chunk.ptr()); // Modify dataset creation properties, i.e. enable chunking.
try { try {
dataset = g.create_dataset(name, h5::native_type_from_C(typename h5::remove_complex<T>::type()), mspace1, cparms); dataset = g.create_dataset(name, h5::native_type_from_C(typename h5::remove_complex<T>::type()), mspace1, cparms);
if (boost::is_complex<T>::value) h5::write_string_attribute(&dataset, "__complex__", "1"); if (boost::is_complex<T>::value) h5::write_string_attribute(&dataset, "__complex__", "1");
@ -83,57 +74,41 @@ namespace triqs { namespace arrays {
TRIQS_ARRAYS_H5_CATCH_EXCEPTION; TRIQS_ARRAYS_H5_CATCH_EXCEPTION;
} }
public :
/**
* \brief Constructor
* \param g The h5 file or group, of type FileGroupType
* \param name The name of the hdf5 array in the file/group where the stack will be stored
* \param base_element_shape The shape of the base array/matrix/vector [or mini_vector<size_t,0>() for a scalar]
* \param bufsize The size of the bufferThe name of the hdf5 array in the file/group where the stack will be stored
* \exception The HDF5 exceptions will be caught and rethrown as TRIQS_RUNTIME_ERROR (with stackstrace, cf doc).
*/
template <typename FileGroupType >
array_stack( FileGroupType g, std::string const & name, mini_vector<size_t,dim> const & base_element_shape, size_t bufsize) {
construct_delegate ( g, name, base_element_shape, bufsize);
}
/**
* \brief Constructor : valid only if the base is a scalar
* \param g The h5 file or group, of type FileGroupType
* \param name The name of the hdf5 array in the file/group where the stack will be stored
* \param bufsize The size of the bufferThe name of the hdf5 array in the file/group where the stack will be stored
* \exception The HDF5 exceptions will be caught and rethrown as TRIQS_RUNTIME_ERROR (with stackstrace, cf doc).
*/
template <typename FileGroupType >
array_stack( FileGroupType g, std::string const & name, size_t bufsize) {
static_assert( (is_scalar<BaseElementType>::value), "This constructor is only available for a scalar BaseElementType");
construct_delegate ( g, name,mini_vector<size_t,0>() , bufsize);
}
/// ///
~array_stack() {flush();} ~array_stack_impl() { flush(); }
/// The type of the base of the stack (a view or a reference) #ifdef TRIQS_DOXYGEN
typedef typename boost::mpl::if_c< base_is_array , array_view<T,dim>, T &>::type slice_type; /// A view (for an array/matrix/vector base) or a reference (for a scalar base) to the top of the stack i.e. the next element to be assigned to
auto operator()() { return buffer(step, ellipsis()); }
/** /// A view (for an array/matrix/vector base) or a reference (for a scalar base) to the top of the stack i.e. the next element to be assigned to
* \return A view (for an array/matrix/vector base) or a reference (for a scalar base) to the top of the stack auto operator()() const { return buffer(step, ellipsis()); }
* i.e. the next element to be assigned to #else
*/ auto operator()() DECL_AND_RETURN(buffer(step, ellipsis()));
slice_type operator() () { return h5_stack_details::slice0(buffer, step); } auto operator()() const DECL_AND_RETURN(buffer(step, ellipsis()));
#endif
/// Advance the stack by one /// Advance the stack by one
void operator++() { ++step; ++_size; if (step==bufsize_) flush(); } void operator++() {
++step;
++_size;
if (step == bufsize_) flush();
}
/// Flush the buffer to the disk. Automatically called at destruction. /// Flush the buffer to the disk. Automatically called at destruction.
void flush() { save_buffer(); step=0;} void flush() {
save_buffer();
step = 0;
}
/** /**
* \brief Add a element onto the stack and advance it by one. * \brief Add a element onto the stack and advance it by one.
* S << A is equivalent to S() = A; ++S; * S << A is equivalent to S() = A; ++S;
*/ */
template<class AType> void operator << ( AType const & A) { (*this)() = A; ++(*this);} template <class AType> void operator<<(AType const &A) {
(*this)() = A;
++(*this);
}
/// Current size of the stack /// Current size of the stack
size_t size() const { return _size; } size_t size() const { return _size; }
@ -147,11 +122,46 @@ namespace triqs { namespace arrays {
H5::DataSpace fspace1 = dataset.getSpace(), mspace = h5_impl::data_space(buffer); H5::DataSpace fspace1 = dataset.getSpace(), mspace = h5_impl::data_space(buffer);
fspace1.selectHyperslab(H5S_SELECT_SET, buffer_dim.ptr(), offset.ptr()); fspace1.selectHyperslab(H5S_SELECT_SET, buffer_dim.ptr(), offset.ptr());
mspace.selectHyperslab(H5S_SELECT_SET, buffer_dim.ptr(), zero.ptr()); mspace.selectHyperslab(H5S_SELECT_SET, buffer_dim.ptr(), zero.ptr());
try { dataset.write( h5_impl::get_array_data_ptr(buffer), h5::data_type_memory<T>(), mspace, fspace1 ); } try {
dataset.write(h5_impl::__get_array_data_ptr(buffer), h5::data_type_memory<T>(), mspace, fspace1);
}
TRIQS_ARRAYS_H5_CATCH_EXCEPTION; TRIQS_ARRAYS_H5_CATCH_EXCEPTION;
offset[0] += step; offset[0] += step;
} }
}; };
}} // namespace
// ------------------------- User classes ------------------------------
// The simple case, 1d
template <typename T> class array_stack : public array_stack_impl<T, 0> {
static_assert((is_scalar<T>::value), "Only available for a scalar type");
public:
/**
* \brief Constructor
* \param g The h5 group
* \param name The name of the hdf5 array in the file/group where the stack will be stored
* \param bufsize The size of the buffer
* \exception The HDF5 exceptions will be caught and rethrown as TRIQS_RUNTIME_ERROR (with stackstrace, cf doc).
*/
array_stack(h5::group g, std::string const &name, size_t bufsize)
: array_stack_impl<T, 0>{g, name, mini_vector<size_t, 0>{}, bufsize} {}
};
// Specialisation for The simple case, 1d
template <typename T, int N> class array_stack<array<T, N>> : public array_stack_impl<T, N> {
public:
/**
* \brief Constructor
* \param g The h5 group
* \param name The name of the hdf5 array in the file/group where the stack will be stored
* \param base_element_shape The shape of the base array of the stack.
* \param bufsize The size of the buffer
* \exception The HDF5 exceptions will be caught and rethrown as TRIQS_RUNTIME_ERROR (with stackstrace, cf doc).
*/
array_stack(h5::group g, std::string const &name, mini_vector<size_t,N> const &base_element_shape, size_t bufsize)
: array_stack_impl<T, N>{g, name, base_element_shape, bufsize} {}
};
}
} // namespace
#endif #endif

163
triqs/arrays/h5/simple_read_write.hpp
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@ -25,107 +25,103 @@
#include <triqs/h5.hpp> #include <triqs/h5.hpp>
#include "../cache.hpp" #include "../cache.hpp"
namespace triqs { namespace arrays { namespace triqs {
namespace arrays {
namespace h5_impl { namespace h5_impl {
template <typename T, int R> const void * get_array_data_cptr ( array_const_view<T,R> const & A) { return h5::get_data_ptr(&(A.storage()[0]));} template <typename A> const void* __get_array_data_cptr(A const& a) { return h5::get_data_ptr(&(a.storage()[0])); }
template <typename T, int R> const void * get_array_data_cptr ( array_view<T,R> const & A) { return h5::get_data_ptr(&(A.storage()[0]));} template <typename A> void* __get_array_data_ptr(A& x) { return h5::get_data_ptr(&(x.storage()[0])); }
template <typename T, int R> const void * get_array_data_cptr ( array<T,R> const & A) { return h5::get_data_ptr(&(A.storage()[0]));}
//template <typename T, int R> void * get_array_data_ptr ( array_view<T,R> & A) { return h5::get_data_ptr(&(A.storage()[0]));}
//template <typename T, int R> void * get_array_data_ptr ( array<T,R> & A) { return h5::get_data_ptr(&(A.storage()[0]));}
template <typename A> ENABLE_IF(is_amv_value_or_view_class<A>) *
get_array_data_ptr (A & x) { return h5::get_data_ptr(&(x.storage()[0]));}
// the dataspace corresponding to the array. Contiguous data only... // the dataspace corresponding to the array. Contiguous data only...
template <typename ArrayType > template <typename ArrayType> H5::DataSpace data_space(ArrayType const& A) {
H5::DataSpace data_space ( ArrayType const & A) { if (!A.indexmap().is_contiguous()) TRIQS_RUNTIME_ERROR << " h5 : internal error : array not contiguous";
static const unsigned int R = ArrayType::rank; static const unsigned int R = ArrayType::rank;
mini_vector<hsize_t, R> S; mini_vector<hsize_t, R> S;
mini_vector<std::ptrdiff_t,R> const & S1 ( A.indexmap().strides() ); auto const& S1(A.indexmap().strides());
for (size_t u=0; u<R ; ++u) { for (int u = 0; u < R; ++u) {
if (S1[u] <= 0) TRIQS_RUNTIME_ERROR << " negative strides not permitted in h5"; if (S1[u] <= 0) TRIQS_RUNTIME_ERROR << " negative strides not permitted in h5";
S[u] = 1; S[u] = 1;
} }
if (!A.indexmap().is_contiguous()) TRIQS_RUNTIME_ERROR<<" h5 : internal error : array not contiguous";
static const bool is_complex = boost::is_complex<typename ArrayType::value_type>::value; static const bool is_complex = boost::is_complex<typename ArrayType::value_type>::value;
return h5::dataspace_from_LS<R, is_complex>(A.indexmap().domain().lengths(), A.indexmap().domain().lengths(), S); return h5::dataspace_from_LS<R, is_complex>(A.indexmap().domain().lengths(), A.indexmap().domain().lengths(), S);
} }
/******************** resize or check the size ****************************************************/ /******************** resize or check the size ****************************************************/
template <typename A> ENABLE_IF(is_amv_value_class<A>) template <typename A> ENABLE_IF(is_amv_value_class<A>) resize_or_check(A& a, mini_vector<size_t, A::rank> const& dimsf) {
resize_or_check ( A & a, mini_vector<size_t,A::rank> const & dimsf ) { a.resize( indexmaps::cuboid::domain_t<A::rank>( dimsf)); } a.resize(indexmaps::cuboid::domain_t<A::rank>(dimsf));
}
template <typename A> ENABLE_IF(is_amv_view_class<A>) template <typename A> ENABLE_IF(is_amv_view_class<A>) resize_or_check(A const& a, mini_vector<size_t, A::rank> const& dimsf) {
resize_or_check ( A const & a, mini_vector<size_t,A::rank> const & dimsf ) { if (a.indexmap().domain().lengths() != dimsf)
if (a.indexmap().domain().lengths() != dimsf) TRIQS_RUNTIME_ERROR<<"Dimension error : the view can not be resized : " TRIQS_RUNTIME_ERROR << "Dimension error : the view can not be resized : "
<< "\n in file : " << dimsf.to_string() << "\n in file : " << dimsf.to_string()
<< "\n in view : " << a.indexmap().domain().lengths().to_string(); << "\n in view : " << a.indexmap().domain().lengths().to_string();
} }
/*********************************** WRITE array ****************************************************************/ /*********************************** WRITE array ****************************************************************/
/** /*
* \brief Write an array or a view into an hdf5 file * Write an array or a view into an hdf5 file
* \tparam *
* \param f The h5 file or group of type H5::H5File or H5::Group * f The h5 file or group of type H5::H5File or H5::Group
* \param name The name of the hdf5 array in the file/group where the stack will be stored * name The name of the hdf5 array in the file/group where the stack will be stored
* \param A The array to be stored * A The array to be stored
* \param C_reorder bool If true [default] the data will be stored in C order in the hdf5, hence making a temporary * C_reorder bool If true [default] the data will be stored in C order in the hdf5, hence making a temporary
* cache of the data to reorder them in memory. * cache of the data to reorder them in memory.
* If false, the array is stored as it [if you know what you are doing] * If false, the array is stored as it [if you know what you are doing]
* \exception The HDF5 exceptions will be caught and rethrown as TRIQS_RUNTIME_ERROR (with a full stackstrace, cf triqs doc). * The HDF5 exceptions will be caught and rethrown as TRIQS_RUNTIME_ERROR (with a full stackstrace, cf triqs doc).
*/ */
template <typename T, int R> template <typename T, int R>
void write_array (h5::group g, std::string const & name, array_const_view <T,R> const & A, bool C_reorder = true) { void write_array_impl(h5::group g, std::string const& name, array_const_view<T, R> A, bool C_reorder) {
static_assert(!std::is_base_of<std::string, T>::value, " Not implemented"); // 1d is below static_assert(!std::is_base_of<std::string, T>::value, " Not implemented"); // 1d is below
if (C_reorder) { write_array(g,name, make_const_cache(A).view(),false); return; } if (C_reorder) {
write_array_impl(g, name, make_const_cache(A).view(), false);
return;
}
try { try {
H5::DataSet ds = g.create_dataset(name, h5::data_type_file<T>(), data_space(A)); H5::DataSet ds = g.create_dataset(name, h5::data_type_file<T>(), data_space(A));
ds.write( get_array_data_cptr(A), h5::data_type_memory<T>(), data_space(A) ); ds.write(__get_array_data_cptr(A), h5::data_type_memory<T>(), data_space(A));
// if complex, to be python compatible, we add the __complex__ attribute // if complex, to be python compatible, we add the __complex__ attribute
if (boost::is_complex<T>::value) h5::write_string_attribute(&ds, "__complex__", "1"); if (boost::is_complex<T>::value) h5::write_string_attribute(&ds, "__complex__", "1");
} }
TRIQS_ARRAYS_H5_CATCH_EXCEPTION; TRIQS_ARRAYS_H5_CATCH_EXCEPTION;
} }
template <typename T, int R> template <typename A> void write_array(h5::group g, std::string const& name, A const& a, bool C_reorder = true) {
void write_array (h5::group g, std::string const & name, array <T,R> const & A, bool C_reorder = true) { write_array(g,name,A(),C_reorder);} write_array_impl(g, name, typename A::const_view_type{a}, C_reorder);
template <typename T, int R> }
void write_array (h5::group g, std::string const & name, array_view <T,R> const & A, bool C_reorder = true) { write_array(g,name,A(),C_reorder);}
/*********************************** READ array ****************************************************************/ /*********************************** READ array ****************************************************************/
/** /*
* \brief Read an array or a view from an hdf5 file * Read an array or a view from an hdf5 file
* \tparam ArrayType The type of the array/matrix/vector, etc.. * ArrayType The type of the array/matrix/vector, etc..
* \param f The h5 file or group of type H5::H5File or H5::Group * f The h5 file or group of type H5::H5File or H5::Group
* \param name The name of the hdf5 array in the file/group where the stack will be stored * name The name of the hdf5 array in the file/group where the stack will be stored
* \param A The array to be stored * A The array to be stored
* \param C_reorder bool If true [default] the data will be stored in C order in the hdf5, hence making a temporary * C_reorder bool If true [default] the data will be stored in C order in the hdf5, hence making a temporary
* cache of the data to reorder them in memory. If false, the array is stored as it [if you know what you are doing] * cache of the data to reorder them in memory. If false, the array is stored as it [if you know what you are doing]
* \exception The HDF5 exceptions will be caught and rethrown as TRIQS_RUNTIME_ERROR (with a full stackstrace, cf triqs doc). * The HDF5 exceptions will be caught and rethrown as TRIQS_RUNTIME_ERROR (with a full stackstrace, cf triqs doc).
*/ */
template <typename ArrayType1> template <typename ArrayType1> void read_array(h5::group g, std::string const& name, ArrayType1&& A, bool C_reorder = true) {
void read_array (h5::group g, std::string const & name, ArrayType1 && A, bool C_reorder = true) {
typedef typename std::remove_reference<ArrayType1>::type ArrayType; typedef typename std::remove_reference<ArrayType1>::type ArrayType;
static_assert(!std::is_base_of<std::string, typename ArrayType::value_type>::value, " Not implemented"); // 1d is below static_assert(!std::is_base_of<std::string, typename ArrayType::value_type>::value, " Not implemented"); // 1d is below
typedef typename ArrayType::value_type V;
try { try {
H5::DataSet ds = g.open_dataset(name); H5::DataSet ds = g.open_dataset(name);
H5::DataSpace dataspace = ds.getSpace(); H5::DataSpace dataspace = ds.getSpace();
static const unsigned int Rank = ArrayType::rank + (boost::is_complex<typename ArrayType::value_type>::value ? 1 : 0); static const unsigned int Rank = ArrayType::rank + (boost::is_complex<typename ArrayType::value_type>::value ? 1 : 0);
int rank = dataspace.getSimpleExtentNdims(); int rank = dataspace.getSimpleExtentNdims();
if (rank != Rank) TRIQS_RUNTIME_ERROR << "triqs::array::h5::read. Rank mismatch : the array has rank = " if (rank != Rank)
<<Rank<<" while the array stored in the hdf5 file has rank = "<<rank; TRIQS_RUNTIME_ERROR << "triqs::array::h5::read. Rank mismatch : the array has rank = " << Rank
<< " while the array stored in the hdf5 file has rank = " << rank;
mini_vector<hsize_t, Rank> dims_out; mini_vector<hsize_t, Rank> dims_out;
//int ndims = dataspace.getSimpleExtentDims( &dims_out[0], NULL);
dataspace.getSimpleExtentDims(&dims_out[0], NULL); dataspace.getSimpleExtentDims(&dims_out[0], NULL);
mini_vector<size_t, ArrayType::rank> d2; mini_vector<size_t, ArrayType::rank> d2;
for (size_t u = 0; u < ArrayType::rank; ++u) d2[u] = dims_out[u]; for (size_t u = 0; u < ArrayType::rank; ++u) d2[u] = dims_out[u];
resize_or_check(A, d2); resize_or_check(A, d2);
if (C_reorder) { read_array(g,name, cache<ArrayType,typename ArrayType::regular_type>(A).view(),false);} if (C_reorder) {
//if (C_reorder) { read_array(g,name, make_cache(A).view(),false);} read_array(g, name, cache<ArrayType, typename ArrayType::regular_type>(A).view(), false);
else ds.read( get_array_data_ptr(A), h5::data_type_memory<typename ArrayType::value_type>(), data_space(A) , dataspace ); } else
ds.read(__get_array_data_ptr(A), h5::data_type_memory<typename ArrayType::value_type>(), data_space(A), dataspace);
} }
TRIQS_ARRAYS_H5_CATCH_EXCEPTION; TRIQS_ARRAYS_H5_CATCH_EXCEPTION;
} }
@ -144,55 +140,60 @@ namespace triqs { namespace arrays {
} }
// I can not use the generic code, just because the resize of the array take a shape, not a size_t as std::vector and vector // I can not use the generic code, just because the resize of the array take a shape, not a size_t as std::vector and vector
// Ok, speed is no issue here...
inline void read_array(h5::group f, std::string const& name, arrays::array<std::string, 1>& V) { inline void read_array(h5::group f, std::string const& name, arrays::array<std::string, 1>& V) {
arrays::vector<std::string> res; read_array(f,name,res); V = res; arrays::vector<std::string> res;
read_array(f, name, res);
V = res;
} }
} // namespace h5impl } // namespace h5impl
//template<typename ArrayType> struct is_amv_value_or_view_class_no_string : // a trait to detect if A::value_type exists and is a scalar or a string
// boost::mpl::and_<is_amv_value_or_view_class<ArrayType>, boost::mpl::not_<boost::is_base_of<std::string, typename ArrayType::value_type> > > {}; // used to exclude array<array<..>>
template <typename A, typename Enable = void> struct has_scalar_or_string_value_type : std::false_type {}; template <typename A, typename Enable = void> struct has_scalar_or_string_value_type : std::false_type {};
template<typename A> struct has_scalar_or_string_value_type<A, decltype(nop(std::declval<typename A::value_type>()))> : template <typename A>
boost::mpl::or_<is_scalar<typename A::value_type>,std::is_base_of<std::string,typename A::value_type>>{}; struct has_scalar_or_string_value_type<
A, decltype(nop(std::declval<
typename A::value_type>()))> : std::integral_constant<bool, is_scalar<typename A::value_type>::value ||
std::is_base_of<std::string,
typename A::value_type>::value> {};
// get_triqs_hdf5_data_scheme
template <typename ArrayType> template <typename ArrayType>
TYPE_ENABLE_IFC(std::string,is_amv_value_or_view_class<ArrayType>::value) TYPE_ENABLE_IFC(std::string, is_amv_value_or_view_class<ArrayType>::value) get_triqs_hdf5_data_scheme(ArrayType const&) {
get_triqs_hdf5_data_scheme(ArrayType const&) {
using triqs::get_triqs_hdf5_data_scheme; // for the basic types, not found by ADL using triqs::get_triqs_hdf5_data_scheme; // for the basic types, not found by ADL
std::stringstream fs; std::stringstream fs;
fs << "array<" << get_triqs_hdf5_data_scheme(typename ArrayType::value_type()) << "," << ArrayType::rank << ">"; fs << "array<" << get_triqs_hdf5_data_scheme(typename ArrayType::value_type()) << "," << ArrayType::rank << ">";
return fs.str(); return fs.str();
} }
/** /*
* \brief Read an array or a view from an hdf5 file * Read an array or a view from an hdf5 file
* \tparam ArrayType The type of the array/matrix/vector, etc.. * ArrayType The type of the array/matrix/vector, etc..
* \param fg The h5 file or group of type H5::H5File or H5::Group * g The h5 group
* \param name The name of the hdf5 array in the file/group where the stack will be stored * name The name of the hdf5 array in the file/group where the stack will be stored
* \param A The array to be stored * A The array to be stored
* \exception The HDF5 exceptions will be caught and rethrown as TRIQS_RUNTIME_ERROR (with a full stackstrace, cf triqs doc). * The HDF5 exceptions will be caught and rethrown as TRIQS_RUNTIME_ERROR (with a full stackstrace, cf triqs doc).
*/ */
template <typename ArrayType> template <typename ArrayType>
//ENABLE_IF(is_amv_value_or_view_class<ArrayType>)
ENABLE_IFC(is_amv_value_or_view_class<ArrayType>::value&& has_scalar_or_string_value_type<ArrayType>::value) ENABLE_IFC(is_amv_value_or_view_class<ArrayType>::value&& has_scalar_or_string_value_type<ArrayType>::value)
h5_read (h5::group fg, std::string const & name, ArrayType & A) { h5_impl::read_array(fg,name, A);} h5_read(h5::group g, std::string const& name, ArrayType& A) {
h5_impl::read_array(g, name, A);
}
/** /*
* \brief Write an array or a view into an hdf5 file * Write an array or a view into an hdf5 file
* \tparam ArrayType The type of the array/matrix/vector, etc.. * ArrayType The type of the array/matrix/vector, etc..
* \param fg The h5 file or group of type H5::H5File or H5::Group * g The h5 group
* \param name The name of the hdf5 array in the file/group where the stack will be stored * name The name of the hdf5 array in the file/group where the stack will be stored
* \param A The array to be stored * A The array to be stored
* \exception The HDF5 exceptions will be caught and rethrown as TRIQS_RUNTIME_ERROR (with a full stackstrace, cf triqs doc). * The HDF5 exceptions will be caught and rethrown as TRIQS_RUNTIME_ERROR (with a full stackstrace, cf triqs doc).
*/ */
template <typename ArrayType> template <typename ArrayType>
//ENABLE_IF(is_amv_value_or_view_class<ArrayType>)
ENABLE_IFC(is_amv_value_or_view_class<ArrayType>::value&& has_scalar_or_string_value_type<ArrayType>::value) ENABLE_IFC(is_amv_value_or_view_class<ArrayType>::value&& has_scalar_or_string_value_type<ArrayType>::value)
h5_write (h5::group fg, std::string const & name, ArrayType const & A) { h5_impl::write_array(fg,name, array_const_view<typename ArrayType::value_type, ArrayType::rank>(A));} h5_write(h5::group g, std::string const& name, ArrayType const& A) {
h5_impl::write_array(g, name, array_const_view<typename ArrayType::value_type, ArrayType::rank>(A));
}} }
}
}
#endif #endif

13
triqs/h5/group.hpp
View File

@ -29,11 +29,11 @@ namespace triqs { namespace h5 {
class group { class group {
H5::Group _g, _parent; H5::Group _g, _parent;
std::string _name_in_parent; std::string _name_in_parent;
group(H5::Group g, H5::Group parent, std::string name_in_parent) : _g(g), _parent(parent), _name_in_parent(name_in_parent) {}
public: public:
group() = default; group() = default;
group(group const &) = default; group(group const &) = default;
group(H5::Group g) : _g(g) {} group(H5::Group g) : _g(g) {}
group(H5::Group g, H5::Group parent, std::string name_in_parent) : _g(g), _parent(parent), _name_in_parent(name_in_parent) {}
/// Takes the "/" group at the top of the file. /// Takes the "/" group at the top of the file.
group (H5::H5File f) : _g(f.openGroup("/")) {} // can not fail, right ? group (H5::H5File f) : _g(f.openGroup("/")) {} // can not fail, right ?
@ -75,8 +75,8 @@ namespace triqs { namespace h5 {
} }
/** /**
* \brief Create a subgroup. * \brief Create a subgroup.
* \param key : the name of the subgroup * \param key The name of the subgroup
* \param delete_if_exists : unlink the group if it exists * \param delete_if_exists Unlink the group if it exists
*/ */
group create_group(std::string const & key, bool delete_if_exists = true) const { group create_group(std::string const & key, bool delete_if_exists = true) const {
unlink_key_if_exists(key); unlink_key_if_exists(key);
@ -84,9 +84,10 @@ namespace triqs { namespace h5 {
} }
/** /**
* \brief Create a dataset. * \brief Create a dataset.
* \param key : the name of the subgroup * \param key The name of the subgroup
* \param all others are forwarded to H5::Group * \param args Other parameters are forwarded to H5::Group
* It unlinks the dataset if it exists. *
* NB : It unlinks the dataset if it exists.
*/ */
template<typename ... Args> template<typename ... Args>
H5::DataSet create_dataset(std::string const & key, Args && ... args) const { H5::DataSet create_dataset(std::string const & key, Args && ... args) const {