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parsable_petsc.hh
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parsable_petsc.hh
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/**
* Copyright (©) 2012-2023 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* This file is part of Akantu
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*/
/* -------------------------------------------------------------------------- */
#include "parsable.hh"
/* -------------------------------------------------------------------------- */
#include <petscsys.h>
/* -------------------------------------------------------------------------- */
#ifndef AKANTU_PARSABLE_PETSC_HH
#define AKANTU_PARSABLE_PETSC_HH
namespace akantu {
template <class ParsableParent, class PETScType>
class ParsablePETSc : public ParsableParent {
public:
template <class... Args>
ParsablePETSc(
PETScType & petsc_object,
std::function<PetscErrorCode(PETScType)> set_object_from_options,
Args &&... args)
: ParsableParent(std::forward<Args>(args)...), petsc_object(petsc_object),
set_object_from_options(std::move(set_object_from_options)) {
PetscOptionsCreate(&options);
}
~ParsablePETSc() override = default;
/* ------------------------------------------------------------------------ */
void updateInternalParameters() override {
if (not petsc_object) {
return;
}
// set the options from parser
PetscOptionsPush(options);
set_object_from_options(petsc_object);
PetscOptionsPop();
// set the options from command line and environment
set_object_from_options(petsc_object);
}
/* ------------------------------------------------------------------------ */
void parseSection(const ParserSection & section) override {
auto && [params_begin, params_end] = section.getParameters();
for (auto && param : range(params_begin, params_end)) {
exceptIfWrongParameter(param);
}
Parsable::parseSection(section);
auto parameters = section.getParameters();
for (auto && param : range(parameters.first, parameters.second)) {
PetscOptionsSetValue(options, ("-" + param.getName()).c_str(),
param.getValue().c_str());
}
updateInternalParameters();
}
/* ------------------------------------------------------------------------ */
void set(const std::string & name, std::any value) override {
exceptIfWrongParameter(name);
if (this->hasParameter(name)) {
Parsable::set(name, value);
} else {
std::string option{};
if (value.type() == typeid(Real)) {
std::stringstream sstr;
sstr << std::any_cast<Real>(value);
option = sstr.str();
} else if (value.type() == typeid(Int)) {
option = std::to_string(std::any_cast<Int>(value));
} else if (value.type() == typeid(bool)) {
option = std::any_cast<bool>(value) ? "true" : "false";
} else if (value.type() == typeid(std::string)) {
option = std::any_cast<std::string>(value);
} else if (value.type() == typeid(const char *)) {
option = std::any_cast<const char *>(value);
}
if (not option.empty()) {
PetscOptionsSetValue(options, ("-" + name).c_str(), option.c_str());
}
}
updateInternalParameters();
}
private:
void exceptIfWrongParameter(const std::string param) const {
if (auto it = akantu_to_petsc_options.find(param);
it != akantu_to_petsc_options.end()) {
const char * type{nullptr};
const char * name{nullptr};
auto object = reinterpret_cast<PetscObject>(petsc_object);
PetscObjectGetType(object, &type);
PetscObjectGetName(object, &name);
AKANTU_EXCEPTION(
"Cannot set the parameter \""
<< it->first << "\" on object \"" << name << "\" of type \"" << type
<< "\" use the PETSc option \"" << it->second << "\" instead.");
}
}
PetscOptions options{};
PETScType & petsc_object;
std::function<PetscErrorCode(PETScType)> set_object_from_options;
protected:
std::map<ID, ID> akantu_to_petsc_options;
};
} // namespace akantu
#endif // AKANTU_PARSABLE_PETSC_HH

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