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fftw_allocator.hh
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Fri, Nov 1, 19:40

fftw_allocator.hh
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/**
* @file
* @section LICENSE
*
* Copyright (©) 2016-2020 EPFL (École Polytechnique Fédérale de Lausanne),
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef __FFTW_ALLOCATOR_HH__
#define __FFTW_ALLOCATOR_HH__
/* -------------------------------------------------------------------------- */
#include <fftw3.h>
#include <memory>
/* -------------------------------------------------------------------------- */
namespace tamaas {
/// Class allocating
/// [SIMD](http://www.fftw.org/fftw3_doc/SIMD-alignment-and-fftw_005fmalloc.html#SIMD-alignment-and-fftw_005fmalloc)
/// aligned memory
template <typename T>
struct FFTWAllocator {
/// Allocate memory
static T* allocate(std::size_t n) noexcept {
T* p = nullptr;
p = (T*)fftw_malloc(sizeof(T) * n);
return p;
}
/// Free memory
static void deallocate(T* p, __attribute__((unused)) std::size_t n) noexcept {
fftw_free(p);
}
};
} // namespace tamaas
#endif // __FFTW_ALLOCATOR_HH__

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