[u/mrichter/AliRoot.git] / Vc / include / Vc / sse / helperimpl.tcc

/*  This file is part of the Vc library.

    Copyright (C) 2010-2012 Matthias Kretz <kretz@kde.org>

    Vc 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.

    Vc 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 Vc.  If not, see <http://www.gnu.org/licenses/>.

*/

#ifndef VC_SSE_HELPERIMPL_TCC
#define VC_SSE_HELPERIMPL_TCC

#include "intrinsics.h"
#include <cstdio>

namespace Vc
{
namespace Internal
{

template<size_t X>
static inline size_t nextMultipleOf(size_t value)
{
    const size_t offset = value % X;
    if ( offset > 0 ) {
        return value + X - offset;
    }
    return value;
}

template<Vc::MallocAlignment A>
inline void *HelperImpl<SSE2Impl>::malloc(size_t n)
{
    switch (A) {
        case Vc::AlignOnVector:
            return _mm_malloc(nextMultipleOf<Vc::SSE::VectorAlignment>(n), Vc::SSE::VectorAlignment);
        case Vc::AlignOnCacheline:
            // TODO: hardcoding 64 is not such a great idea
            return _mm_malloc(nextMultipleOf<64>(n), 64);
        case Vc::AlignOnPage:
            // TODO: hardcoding 4096 is not such a great idea
            return _mm_malloc(nextMultipleOf<4096>(n), 4096);
        default:
#ifndef NDEBUG
            abort();
#endif
            return _mm_malloc(n, 8);
    }
}

inline void HelperImpl<SSE2Impl>::free(void *p)
{
    _mm_free(p);
}

} // namespace Internal
} // namespace Vc

#endif // VC_SSE_HELPERIMPL_TCC
Commit	Line	Data
f22341db	1	/* This file is part of the Vc library.
	2
	3	Copyright (C) 2010-2012 Matthias Kretz <kretz@kde.org>
	4
	5	Vc is free software: you can redistribute it and/or modify
	6	it under the terms of the GNU Lesser General Public License as
	7	published by the Free Software Foundation, either version 3 of
	8	the License, or (at your option) any later version.
	9
	10	Vc is distributed in the hope that it will be useful, but
	11	WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
	16	License along with Vc. If not, see <http://www.gnu.org/licenses/>.
	17
	18	*/
	19
	20	#ifndef VC_SSE_HELPERIMPL_TCC
	21	#define VC_SSE_HELPERIMPL_TCC
	22
	23	#include "intrinsics.h"
	24	#include <cstdio>
	25
	26	namespace Vc
	27	{
	28	namespace Internal
	29	{
	30
	31	template<size_t X>
	32	static inline size_t nextMultipleOf(size_t value)
	33	{
	34	const size_t offset = value % X;
	35	if ( offset > 0 ) {
	36	return value + X - offset;
	37	}
	38	return value;
	39	}
	40
	41	template<Vc::MallocAlignment A>
	42	inline void *HelperImpl<SSE2Impl>::malloc(size_t n)
	43	{
	44	switch (A) {
	45	case Vc::AlignOnVector:
	46	return _mm_malloc(nextMultipleOf<Vc::SSE::VectorAlignment>(n), Vc::SSE::VectorAlignment);
	47	case Vc::AlignOnCacheline:
	48	// TODO: hardcoding 64 is not such a great idea
	49	return _mm_malloc(nextMultipleOf<64>(n), 64);
	50	case Vc::AlignOnPage:
	51	// TODO: hardcoding 4096 is not such a great idea
	52	return _mm_malloc(nextMultipleOf<4096>(n), 4096);
	53	default:
	54	#ifndef NDEBUG
	55	abort();
	56	#endif
	57	return _mm_malloc(n, 8);
	58	}
	59	}
	60
	61	inline void HelperImpl<SSE2Impl>::free(void *p)
	62	{
	63	_mm_free(p);
	64	}
65
66	} // namespace Internal
67	} // namespace Vc
68
69	#endif // VC_SSE_HELPERIMPL_TCC