/usr/include/ZenLib/MemoryUtils.h is in libzen-dev 0.4.34-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* Use of this source code is governed by a zlib-style license that can
* be found in the License.txt file in the root of the source tree.
*/
//---------------------------------------------------------------------------
#ifndef ZenLib_MemoryUtilsH
#define ZenLib_MemoryUtilsH
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#include "ZenLib/Conf.h"
#include "ZenLib/Conf.h"
//---------------------------------------------------------------------------
#include <cstring>
#ifdef ZENLIB_MEMUTILS_SSE2
#include <emmintrin.h>
#endif //ZENLIB_MEMUTILS_SSE2
namespace ZenLib
{
#ifndef ZENLIB_MEMUTILS_SSE2
//-----------------------------------------------------------------------
// Memory alloc/free
#define malloc_Aligned128 (size) \
malloc (size)
#define free_Aligned128 (ptr) \
free (ptr)
//-----------------------------------------------------------------------
// Arbitrary size - To Unaligned
#define memcpy_Unaligned_Unaligned memcpy
#define memcpy_Aligned128_Unaligned memcpy
//-----------------------------------------------------------------------
// Arbitrary size - To Aligned 128 bits (16 bytes)
#define memcpy_Unaligned_Aligned128 memcpy
#define memcpy_Aligned128_Aligned128 memcpy
//-----------------------------------------------------------------------
// 128 bits - To Unaligned
#define memcpy_Unaligned_Unaligned_Once128 memcpy
//-----------------------------------------------------------------------
// 128 bits - To Aligned 128 bits (16 bytes)
#define memcpy_Aligned128_Aligned128_Once128 memcpy
//-----------------------------------------------------------------------
// 1024 bits - To Unaligned
#define memcpy_Unaligned_Unaligned_Once1024 memcpy
//-----------------------------------------------------------------------
// 1024 bits - To Aligned 128 bits (16 bytes)
#define memcpy_Aligned128_Aligned128_Once1024 memcpy
//-----------------------------------------------------------------------
// 128-bit multiple - To Aligned 128 bits (16 bytes)
#define memcpy_Unaligned_Aligned128_Size128 memcpy
#define memcpy_Aligned128_Aligned128_Size128 memcpy
#else // ZENLIB_MEMUTILS_SSE2
//-----------------------------------------------------------------------
// Memory alloc/free
inline void* malloc_Aligned128 (size_t size)
{
return _aligned_malloc (size, 16); //aligned_alloc in C11
}
inline void free_Aligned128 ( void *ptr )
{
_aligned_free (ptr); //free in C11
}
//-----------------------------------------------------------------------
// Arbitrary size - To Unaligned
inline void memcpy_Unaligned_Unaligned (void* destination, const void* source, size_t num)
{
size_t extra=num&0xF;
__m128i* destination16=(__m128i*)destination;
const __m128i* source16=(const __m128i*)source;
num>>=4;
while (num--)
_mm_storeu_si128 (destination16++, _mm_loadu_si128(source16++));
char* destination1=(char*)destination16;
char* source1=(char*)source16;
while (extra--)
*destination1++=*source1++;
}
inline void memcpy_Aligned128_Unaligned (void* destination, const void* source, size_t num)
{
size_t extra=num&0xF;
__m128i* destination16=(__m128i*)destination;
const __m128i* source16=(const __m128i*)source;
num>>=4;
while (num--)
_mm_storeu_si128 (destination16++, _mm_load_si128(source16++));
char* destination1=(char*)destination16;
char* source1=(char*)source16;
while (extra--)
*destination1++=*source1++;
}
//-----------------------------------------------------------------------
// Arbitrary size - To Aligned 128 bits (16 bytes)
inline void memcpy_Unaligned_Aligned128 (void* destination, const void* source, size_t num)
{
size_t extra=num&0xF;
__m128i* destination16=(__m128i*)destination;
const __m128i* source16=(const __m128i*)source;
num>>=4;
while (num--)
_mm_stream_si128 (destination16++, _mm_loadu_si128(source16++));
char* destination1=(char*)destination16;
char* source1=(char*)source16;
while (extra--)
*destination1++=*source1++;
}
//-----------------------------------------------------------------------
// 128 bits - To Unaligned
inline void memcpy_Unaligned_Unaligned_Once128 (void* destination, const void* source)
{
_mm_storeu_si128 ((__m128i*)destination, _mm_loadu_si128((const __m128i*)source));
}
//-----------------------------------------------------------------------
// 128 bits - To Aligned 128 bits (16 bytes)
inline void memcpy_Aligned128_Aligned128 (void* destination, const void* source, size_t num)
{
size_t extra=num&0xF;
__m128i* destination16=(__m128i*)destination;
const __m128i* source16=(const __m128i*)source;
num>>=4;
while (num--)
_mm_stream_si128 (destination16++, _mm_load_si128(source16++));
char* destination1=(char*)destination16;
char* source1=(char*)source16;
while (extra--)
*destination1++=*source1++;
}
inline void memcpy_Aligned128_Aligned128_Size128 (void* destination, const void* source, size_t num)
{
__m128i* destination16=(__m128i*)destination;
const __m128i* source16=(__m128i*)source;
num>>=4;
while (num--)
_mm_stream_si128 (destination16++, _mm_load_si128(source16++));
}
//-----------------------------------------------------------------------
// 1024 bits - To Unaligned
inline void memcpy_Unaligned_Unaligned_Once1024 (void* destination, const void* source, size_t)
{
__m128i* destination16=(__m128i*)destination;
const __m128i* source16=(__m128i*)source;
size_t num=8;
while (num--)
_mm_storeu_si128 (destination16++, _mm_loadu_si128(source16++));
}
//-----------------------------------------------------------------------
// 1024 bits - To Aligned 128 bits (16 bytes)
inline void memcpy_Aligned128_Aligned128_Once128 (void* destination, const void* source)
{
_mm_stream_si128 ((__m128i*)destination, _mm_load_si128((const __m128i*)source));
}
//-----------------------------------------------------------------------
// 128-bit multiple - To Unaligned (16 bytes)
inline void memcpy_Unaligned_Unaligned_Size128 (void* destination, const void* source, size_t num)
{
__m128i* destination16=(__m128i*)destination;
const __m128i* source16=(const __m128i*)source;
num>>=4;
while (num--)
_mm_storeu_si128 (destination16++, _mm_loadu_si128(source16++));
}
inline void memcpy_Aligned128_Unaligned_Size128 (void* destination, const void* source, size_t num)
{
__m128i* destination16=(__m128i*)destination;
const __m128i* source16=(__m128i*)source;
num>>=4;
while (num--)
_mm_storeu_si128 (destination16++, _mm_load_si128(source16++));
}
//-----------------------------------------------------------------------
// 128-bit multiple - To Aligned 128 bits (16 bytes)
inline void memcpy_Unaligned_Aligned128_Size128 (void* destination, const void* source, size_t num)
{
__m128i* destination16=(__m128i*)destination;
const __m128i* source16=(__m128i*)source;
num>>=4;
while (num--)
_mm_stream_si128 (destination16++, _mm_loadu_si128(source16++));
}
/* Slower
inline void memcpy_Aligned128_Aligned128_Once1024 (void* destination, const void* source)
{
__m128i* destination16=(__m128i*)destination;
const __m128i* source16=(__m128i*)source;
size_t num=8;
while (num--)
_mm_stream_si128 (destination16++, _mm_load_si128(source16++));
}
*/
/*
inline void memcpy_Aligned256_Aligned256 (void* destination, const void* source, size_t num) //with AVX, actually slower
{
size_t extra=num&0x1F;
__m256i* destination16=(__m256i*)destination;
const __m256i* source16=(const __m256i*)source;
num>>=5;
while (num--)
_mm256_storeu_si256 (destination16++, _mm256_loadu_si256(source16++));
char* destination1=(char*)destination16;
char* source1=(char*)source16;
while (extra--)
*destination1++=*source1++;
}
*/
#endif // ZENLIB_MEMUTILS_SSE2
} //NameSpace
#endif
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