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fftw_allocator.hh
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Mon, May 6, 02:43
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Wed, May 8, 02:43 (2 d)
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rTAMAAS tamaas
fftw_allocator.hh
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/*
* SPDX-License-Indentifier: AGPL-3.0-or-later
*
* Copyright (©) 2016-2022 EPFL (École Polytechnique Fédérale de Lausanne),
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
* Copyright (©) 2020-2022 Lucas Frérot
*
* 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 "span.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
span
<
T
>
allocate
(
typename
span
<
T
>::
size_type
n
)
noexcept
{
T
*
p
=
nullptr
;
p
=
static_cast
<
T
*>
(
fftw_malloc
(
sizeof
(
T
)
*
n
));
return
span
<
T
>
{
p
,
n
};
}
/// Free memory
static
void
deallocate
(
span
<
T
>
view
)
noexcept
{
fftw_free
(
view
.
data
());
}
};
}
// namespace tamaas
#endif
// FFTW_ALLOCATOR_HH
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