/*
Copyright ( c ) 2020 , MariaDB Corporation .
This program is free software ; you can redistribute it and / or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation ; version 2 of the License .
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 General Public License for more details .
You should have received a copy of the GNU General Public License
along with this program ; if not , write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
#pragma once
#include <cassert>
#include <cstring>
#ifdef _MSC_VER
template <std::size_t Alignment, class T>
static inline T my_assume_aligned(T ptr)
{
assert(reinterpret_cast <size_t>(ptr) % Alignment == 0 );
__assume(reinterpret_cast <size_t>(ptr) % Alignment == 0 );
return ptr;
}
#else
template <std::size_t Alignment, class T>
static inline T my_assume_aligned(T ptr)
{
assert(reinterpret_cast <size_t>(ptr) % Alignment == 0 );
return static_cast <T>(__builtin_assume_aligned(ptr, Alignment));
}
#endif
template <std::size_t Alignment>
inline void *memcpy_aligned(void *dest, const void *src, size_t n)
{
static_assert(Alignment && !(Alignment & (Alignment - 1 )), "power of 2" );
return std::memcpy(my_assume_aligned<Alignment>(dest),
my_assume_aligned<Alignment>(src), n);
}
template <std::size_t Alignment>
inline void *memmove_aligned(void *dest, const void *src, size_t n)
{
static_assert(Alignment && !(Alignment & (Alignment - 1 )), "power of 2" );
return std::memmove(my_assume_aligned<Alignment>(dest),
my_assume_aligned<Alignment>(src), n);
}
template <std::size_t Alignment>
inline int memcmp_aligned(const void *s1, const void *s2, size_t n)
{
static_assert(Alignment && !(Alignment & (Alignment - 1 )), "power of 2" );
return std::memcmp(my_assume_aligned<Alignment>(s1),
my_assume_aligned<Alignment>(s2), n);
}
template <std::size_t Alignment>
inline void *memset_aligned(void *s, int c, size_t n)
{
static_assert(Alignment && !(Alignment & (Alignment - 1 )), "power of 2" );
return std::memset(my_assume_aligned<Alignment>(s), c, n);
}
Messung V0.5 in Prozent C=99 H=100 G=99
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-10-08)
¤
*© Formatika GbR, Deutschland