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72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
#ifndef GRID_ALIGNED_ALLOCATOR_H
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#define GRID_ALIGNED_ALLOCATOR_H
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#include <immintrin.h>
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#ifdef HAVE_MM_MALLOC_H
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#include <mm_malloc.h>
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#endif
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namespace Grid {
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////////////////////////////////////////////////////////////////////
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// A lattice of something, but assume the something is SIMDized.
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////////////////////////////////////////////////////////////////////
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template<typename _Tp>
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class alignedAllocator {
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public:
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typedef std::size_t size_type;
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typedef std::ptrdiff_t difference_type;
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typedef _Tp* pointer;
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typedef const _Tp* const_pointer;
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typedef _Tp& reference;
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typedef const _Tp& const_reference;
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typedef _Tp value_type;
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template<typename _Tp1> struct rebind { typedef alignedAllocator<_Tp1> other; };
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alignedAllocator() throw() { }
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alignedAllocator(const alignedAllocator&) throw() { }
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template<typename _Tp1> alignedAllocator(const alignedAllocator<_Tp1>&) throw() { }
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~alignedAllocator() throw() { }
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pointer address(reference __x) const { return &__x; }
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// const_pointer address(const_reference __x) const { return &__x; }
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size_type max_size() const throw() { return size_t(-1) / sizeof(_Tp); }
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pointer allocate(size_type __n, const void* = 0)
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{
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#ifdef HAVE_MM_MALLOC_H
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_Tp * ptr = (_Tp *) _mm_malloc(__n*sizeof(_Tp),128);
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#else
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_Tp * ptr = (_Tp *) memalign(128,__n*sizeof(_Tp));
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#endif
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return ptr;
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}
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void deallocate(pointer __p, size_type) {
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#ifdef HAVE_MM_MALLOC_H
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_mm_free((void *)__p);
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#else
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free((void *)__p);
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#endif
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}
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void construct(pointer __p, const _Tp& __val) { };
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void construct(pointer __p) { };
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void destroy(pointer __p) { };
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};
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template<typename _Tp> inline bool
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operator==(const alignedAllocator<_Tp>&, const alignedAllocator<_Tp>&){ return true; }
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template<typename _Tp> inline bool
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operator!=(const alignedAllocator<_Tp>&, const alignedAllocator<_Tp>&){ return false; }
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}; // namespace Grid
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#endif
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