mirror of
https://github.com/paboyle/Grid.git
synced 2024-09-20 17:25:37 +01:00
60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
#ifndef GRID_ALIGNED_ALLOCATOR_H
|
|
#define GRID_ALIGNED_ALLOCATOR_H
|
|
|
|
#include <immintrin.h>
|
|
|
|
namespace Grid {
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// A lattice of something, but assume the something is SIMDized.
|
|
////////////////////////////////////////////////////////////////////
|
|
template<typename _Tp>
|
|
class alignedAllocator {
|
|
public:
|
|
typedef std::size_t size_type;
|
|
typedef std::ptrdiff_t difference_type;
|
|
typedef _Tp* pointer;
|
|
typedef const _Tp* const_pointer;
|
|
typedef _Tp& reference;
|
|
typedef const _Tp& const_reference;
|
|
typedef _Tp value_type;
|
|
|
|
template<typename _Tp1> struct rebind { typedef alignedAllocator<_Tp1> other; };
|
|
alignedAllocator() throw() { }
|
|
alignedAllocator(const alignedAllocator&) throw() { }
|
|
template<typename _Tp1> alignedAllocator(const alignedAllocator<_Tp1>&) throw() { }
|
|
~alignedAllocator() throw() { }
|
|
pointer address(reference __x) const { return &__x; }
|
|
const_pointer address(const_reference __x) const { return &__x; }
|
|
size_type max_size() const throw() { return size_t(-1) / sizeof(_Tp); }
|
|
// Should override allocate and deallocate
|
|
pointer allocate(size_type __n, const void* = 0)
|
|
{
|
|
//_Tp * ptr = (_Tp *) memalign(sizeof(_Tp),__n*sizeof(_Tp));
|
|
// _Tp * ptr = (_Tp *) memalign(128,__n*sizeof(_Tp));
|
|
#ifdef AVX512
|
|
_Tp * ptr = (_Tp *) memalign(128,__n*sizeof(_Tp));
|
|
#else
|
|
_Tp * ptr = (_Tp *) _mm_malloc(__n*sizeof(_Tp),128);
|
|
#endif
|
|
|
|
return ptr;
|
|
}
|
|
void deallocate(pointer __p, size_type) {
|
|
free(__p);
|
|
}
|
|
void construct(pointer __p, const _Tp& __val) { };
|
|
void construct(pointer __p) { };
|
|
void destroy(pointer __p) { };
|
|
};
|
|
|
|
template<typename _Tp> inline bool
|
|
operator==(const alignedAllocator<_Tp>&, const alignedAllocator<_Tp>&){ return true; }
|
|
|
|
template<typename _Tp> inline bool
|
|
operator!=(const alignedAllocator<_Tp>&, const alignedAllocator<_Tp>&){ return false; }
|
|
|
|
|
|
}; // namespace Grid
|
|
#endif
|