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fft_plan_manager.cpp
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Mon, Nov 11, 03:21

fft_plan_manager.cpp
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/**
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Lucas Frérot <lucas.frerot@epfl.ch>
*
* @section LICENSE
*
* Copyright (©) 2016 EPFL (Ecole Polytechnique Fédérale de
* Lausanne) Laboratory (LSMS - Laboratoire de Simulation en Mécanique des
* Solides)
*
* Tamaas 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.
*
* Tamaas 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 Tamaas. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "fft_plan_manager.hh"
#include "fftransform_fftw.hh"
#if defined(USE_CUFFT)
#include "fftransform_cufft.hh"
#endif
/* -------------------------------------------------------------------------- */
__BEGIN_TAMAAS__
/* -------------------------------------------------------------------------- */
FFTPlanManager::FFTPlanManager(){
}
/* -------------------------------------------------------------------------- */
FFTPlanManager::~FFTPlanManager(){
clean();
}
/* -------------------------------------------------------------------------- */
FFTPlanManager & FFTPlanManager::get(){
if (FFTPlanManager::singleton == NULL)
FFTPlanManager::singleton = new FFTPlanManager();
return *FFTPlanManager::singleton;
}
/* -------------------------------------------------------------------------- */
FFTransform<Real, 2> & FFTPlanManager::createPlan(Grid<Real, 2> & input,
GridHermitian<Real, 2> & output){
auto index = std::make_pair(const_cast<Real*>(input.getInternalData()),
const_cast<complex*>(output.getInternalData()));
auto it = plans.find(index);
auto end = plans.end();
if (it == end) {
#if defined(USE_CUFFT)
plans[index] = new FFTransformCUFFT<Real, 2>(input.size(),input,output);
#else
plans[index] = new FFTransformFFTW<Real, 2>(input,output);
#endif
}
return *plans[index];
}
/* -------------------------------------------------------------------------- */
void FFTPlanManager::clean() {
auto it = plans.begin();
auto end = plans.end();
for (; it != end ; ++it) {
delete it->second;
plans.erase(it->first);
}
}
/* -------------------------------------------------------------------------- */
template<>
void FFTPlanManager::destroyPlan<Real>(const Real * some) {
auto it = plans.begin();
auto end = plans.end();
for (; it != end ; ++it) {
if (it->first.first == some) {
delete it->second;
plans.erase(it->first);
}
}
}
/* -------------------------------------------------------------------------- */
template<>
void FFTPlanManager::destroyPlan<complex>(const complex * some) {
auto it = plans.begin();
auto end = plans.end();
for (; it != end ; ++it) {
if (it->first.second == some) {
delete it->second;
plans.erase(it->first);
}
}
}
/* -------------------------------------------------------------------------- */
/// FFT should not be used for any other type
#define DESTROY(type) template<> void FFTPlanManager::destroyPlan<type>( \
__attribute__((unused)) const type * some){}
/// This list of types is defined in map_2d.cpp
DESTROY(int);
DESTROY(UInt);
DESTROY(bool);
DESTROY(unsigned long);
#undef DESTROY
/* -------------------------------------------------------------------------- */
void FFTPlanManager::destroyPlan(Grid<Real, 2> & input,
GridHermitian<Real, 2> & output){
auto index = std::make_pair(const_cast<Real*>(input.getInternalData()),
const_cast<complex*>(output.getInternalData()));
auto it = plans.find(index);
auto end = plans.end();
if (it != end){
delete (plans[index]);
plans.erase(index);
}
}
/* -------------------------------------------------------------------------- */
FFTPlanManager * FFTPlanManager::singleton = NULL;
/* -------------------------------------------------------------------------- */
__END_TAMAAS__

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