96 lines
2.4 KiB
C++
96 lines
2.4 KiB
C++
/*
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* Modern effects for a modern Streamer
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* Copyright (C) 2017 Michael Fabian Dirks
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#pragma once
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#include <stdlib.h>
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#include <malloc.h>
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namespace util {
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void* malloc_aligned(size_t align, size_t size);
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void free_aligned(void* mem);
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template <typename T, size_t N = 16>
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class AlignmentAllocator {
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public:
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typedef T value_type;
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typedef size_t size_type;
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typedef std::ptrdiff_t difference_type;
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typedef T * pointer;
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typedef const T * const_pointer;
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typedef T & reference;
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typedef const T & const_reference;
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public:
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inline AlignmentAllocator() throw () {}
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template <typename T2>
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inline AlignmentAllocator(const AlignmentAllocator<T2, N> &) throw () {}
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inline ~AlignmentAllocator() throw () {}
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inline pointer adress(reference r) {
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return &r;
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}
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inline const_pointer adress(const_reference r) const {
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return &r;
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}
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inline pointer allocate(size_type n) {
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return (pointer)_aligned_malloc(n*sizeof(value_type), N);
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}
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inline void deallocate(pointer p, size_type) {
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_aligned_free(p);
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}
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inline void construct(pointer p, const value_type & wert) {
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new (p)value_type(wert);
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}
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inline void destroy(pointer p) {
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p->~value_type();
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p;
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}
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inline size_type max_size() const throw () {
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return size_type(-1) / sizeof(value_type);
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}
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template <typename T2>
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struct rebind {
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typedef AlignmentAllocator<T2, N> other;
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};
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bool operator!=(const AlignmentAllocator<T, N>& other) const {
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return !(*this == other);
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}
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// Returns true if and only if storage allocated from *this
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// can be deallocated from other, and vice versa.
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// Always returns true for stateless allocators.
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bool operator==(const AlignmentAllocator<T, N>& other) const {
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return true;
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}
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};
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};
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