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/*
* This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
*
* 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 General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "SFMTRand.h"
#include "Timer.h"
#include <algorithm>
#include <array>
#include <random>
#if defined(__aarch64__)
#if defined(__clang__)
#include <mm_malloc.h>
#elif defined(__GNUC__)
static __inline__ void *__attribute__((__always_inline__, __nodebug__, __malloc__))
_mm_malloc(std::size_t __size, std::size_t __align)
{
if (__align == 1)
{
return malloc(__size);
}
if (!(__align & (__align - 1)) && __align < sizeof(void *))
__align = sizeof(void *);
void *__mallocedMemory;
if (posix_memalign(&__mallocedMemory, __align, __size))
return NULL;
return __mallocedMemory;
}
static __inline__ void __attribute__((__always_inline__, __nodebug__))
_mm_free(void *__p)
{
free(__p);
}
#else
#error aarch64 only on clang and gcc
#endif
#else
#include <emmintrin.h>
#endif
SFMTRand::SFMTRand()
{
std::random_device dev;
if (dev.entropy() > 0)
{
std::array<uint32, SFMT_N32> seed;
std::generate(seed.begin(), seed.end(), std::ref(dev));
sfmt_init_by_array(&_state, seed.data(), seed.size());
}
else
{
sfmt_init_gen_rand(&_state, uint32(GetEpochTime().count()));
}
}
uint32 SFMTRand::RandomUInt32() // Output random bits
{
return sfmt_genrand_uint32(&_state);
}
void* SFMTRand::operator new(std::size_t size, std::nothrow_t const&)
{
return _mm_malloc(size, 16);
}
void SFMTRand::operator delete(void* ptr, std::nothrow_t const&)
{
_mm_free(ptr);
}
void* SFMTRand::operator new(std::size_t size)
{
return _mm_malloc(size, 16);
}
void SFMTRand::operator delete(void* ptr)
{
_mm_free(ptr);
}
void* SFMTRand::operator new[](std::size_t size, std::nothrow_t const&)
{
return _mm_malloc(size, 16);
}
void SFMTRand::operator delete[](void* ptr, std::nothrow_t const&)
{
_mm_free(ptr);
}
void* SFMTRand::operator new[](std::size_t size)
{
return _mm_malloc(size, 16);
}
void SFMTRand::operator delete[](void* ptr)
{
_mm_free(ptr);
}
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