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// ------------------------------------------------------------------------
//
// SPDX-License-Identifier: LGPL-2.1-or-later
// Copyright (C) 2025 by the deal.II authors
//
// This file is part of the deal.II library.
//
// Part of the source code is dual licensed under Apache-2.0 WITH
// LLVM-exception OR LGPL-2.1-or-later. Detailed license information
// governing the source code and code contributions can be found in
// LICENSE.md and CONTRIBUTING.md at the top level directory of deal.II.
//
// ------------------------------------------------------------------------
// It is very inefficient in the module system to have repeated
// #includes in many module partition files because when you 'import'
// those partitions, you also have to load everything they
// #included. In other words, you get the same content *many times*,
// once from each imported partition, rather than only once via the
// old-style #include system. We deal with this by wrapping all of our
// external packages into partitions that we can 'import' wherever we
// need.
// This is the file that wraps everything we need from VTK into one
// module partition.
module;
#include <deal.II/base/config.h>
#ifdef DEAL_II_WITH_HDF5
# include <hdf5.h>
#endif
export module dealii.external.hdf5;
#ifdef DEAL_II_WITH_HDF5
export
{
using ::H5Aclose;
using ::H5Acreate2;
using ::H5Aopen;
using ::H5Aread;
using ::H5Awrite;
using ::H5D_mpio_actual_io_mode_t;
using ::H5Dclose;
using ::H5Dcreate2;
using ::H5Dget_space;
using ::H5Dget_type;
using ::H5Dopen2;
using ::H5Dread;
using ::H5Dwrite;
using ::H5Fclose;
using ::H5Fcreate;
using ::H5Fopen;
using ::H5Gclose;
using ::H5Gcreate2;
using ::H5Gopen2;
using ::H5Pclose;
using ::H5Pcreate;
using ::H5Pget_mpio_actual_io_mode;
using ::H5Pget_mpio_no_collective_cause;
using ::H5Pset_chunk;
using ::H5Pset_deflate;
using ::H5Pset_dxpl_mpio;
using ::H5Pset_fapl_mpio;
using ::H5Sclose;
using ::H5Screate;
using ::H5Screate_simple;
using ::H5Sget_simple_extent_dims;
using ::H5Sget_simple_extent_ndims;
using ::H5Sselect_hyperslab;
using ::H5Sselect_none;
using ::H5T_class_t;
using ::H5Tclose;
using ::H5Tcopy;
using ::H5Tcreate;
using ::H5Tenum_insert;
using ::H5Tget_class;
using ::H5Tinsert;
using ::H5Tset_cset;
using ::H5Tset_size;
using ::herr_t;
using ::hid_t;
using ::hsize_t;
}
// HDF5 also defines quite a lot of symbols that are either
// implemented as macros, or perhaps as constants in header
// files. In the former case, they cannot be referenced in 'using'
// expressions, and so we need to work around things by creating
// *variables* of the same names. In the latter case, they are often
// implemented as constants with internal linkage that we can't
// re-export them (e.g., if they are members of anonymous enums).
//
// Dealing with this situation requires creating some other set of
// variable, undefining the macro names, and then creating variables
// with the same names as the macro names. Because we would end up
// with name clashes if these new variables were in the global
// namespace for those MPI implementations that implement things as
// variables in the global namespace, we put everything into the
// dealii namespace.
//
// We put the exportable symbols into namespace 'dealii'. This is
// necessary for cases where the symbol we create is derived not from
// a preprocessor macro, but for example as a member of an anonymous
// enum. Such symbols can't be exported, so we declare a variable that
// we *can* export, but it will not have the type of the enum, but of
// the underlying int. The compiler will therefore complain that the
// variable we're creating here redeclares another one but with a
// different type. We can avoid this by putting things into our own
// namespace.
# define CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(sym) \
namespace dealii \
{ \
namespace HDF5_Macros \
{ \
[[maybe_unused]] const auto exportable_##sym = sym; \
} \
} // namespace dealii
# define EXPORT_PREPROCESSOR_SYMBOL(sym) \
namespace dealii \
{ \
export const auto &sym = HDF5_Macros::exportable_##sym; \
}
// H5F symbols
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5F_ACC_RDWR)
# undef H5F_ACC_RDWR
EXPORT_PREPROCESSOR_SYMBOL(H5F_ACC_RDWR)
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5F_ACC_RDONLY)
# undef H5F_ACC_RDONLY
EXPORT_PREPROCESSOR_SYMBOL(H5F_ACC_RDONLY)
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5F_ACC_TRUNC)
# undef H5F_ACC_TRUNC
EXPORT_PREPROCESSOR_SYMBOL(H5F_ACC_TRUNC)
// H5T symbols
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5T_NATIVE_DOUBLE)
# undef H5T_NATIVE_DOUBLE
EXPORT_PREPROCESSOR_SYMBOL(H5T_NATIVE_DOUBLE)
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5T_NATIVE_FLOAT)
# undef H5T_NATIVE_FLOAT
EXPORT_PREPROCESSOR_SYMBOL(H5T_NATIVE_FLOAT)
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5T_NATIVE_HBOOL)
# undef H5T_NATIVE_HBOOL
EXPORT_PREPROCESSOR_SYMBOL(H5T_NATIVE_HBOOL)
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5T_NATIVE_CHAR)
# undef H5T_NATIVE_CHAR
EXPORT_PREPROCESSOR_SYMBOL(H5T_NATIVE_CHAR)
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5T_NATIVE_INT)
# undef H5T_NATIVE_INT
EXPORT_PREPROCESSOR_SYMBOL(H5T_NATIVE_INT)
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5T_NATIVE_UINT)
# undef H5T_NATIVE_UINT
EXPORT_PREPROCESSOR_SYMBOL(H5T_NATIVE_UINT)
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5T_C_S1)
# undef H5T_C_S1
EXPORT_PREPROCESSOR_SYMBOL(H5T_C_S1)
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5T_VARIABLE)
# undef H5T_VARIABLE
EXPORT_PREPROCESSOR_SYMBOL(H5T_VARIABLE)
// H5S symbols
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5S_NULL)
# undef H5S_NULL
EXPORT_PREPROCESSOR_SYMBOL(H5S_NULL)
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5S_ALL)
# undef H5S_ALL
EXPORT_PREPROCESSOR_SYMBOL(H5S_ALL)
// H5P symbols
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5P_DEFAULT)
# undef H5P_DEFAULT
EXPORT_PREPROCESSOR_SYMBOL(H5P_DEFAULT)
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5P_DATASET_CREATE)
# undef H5P_DATASET_CREATE
EXPORT_PREPROCESSOR_SYMBOL(H5P_DATASET_CREATE)
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5P_DATASET_XFER)
# undef H5P_DATASET_XFER
EXPORT_PREPROCESSOR_SYMBOL(H5P_DATASET_XFER)
CREATE_EXPORTABLE_PREPROCESSOR_SYMBOL(H5P_FILE_ACCESS)
# undef H5P_FILE_ACCESS
EXPORT_PREPROCESSOR_SYMBOL(H5P_FILE_ACCESS)
// There is also the case that HDF5 has the following:
// #define H5Dcreate H5Dcreate2
// We deal with this by exporting a symbol H5DCreate that simply
// aliases H5DCreate2:
# undef H5Dcreate
export
{
auto H5Dcreate = &::H5Dcreate2;
}
#endif
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