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/*==LICENSE==*
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CyanWorlds.com Engine - MMOG client, server and tools |
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Copyright (C) 2011 Cyan Worlds, Inc. |
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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 3 of the License, or |
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(at your option) any later version. |
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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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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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Additional permissions under GNU GPL version 3 section 7 |
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If you modify this Program, or any covered work, by linking or |
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combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK, |
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NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent |
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JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK |
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(or a modified version of those libraries), |
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containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA, |
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PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG |
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JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the |
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licensors of this Program grant you additional |
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permission to convey the resulting work. Corresponding Source for a |
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non-source form of such a combination shall include the source code for |
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the parts of OpenSSL and IJG JPEG Library used as well as that of the covered |
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work. |
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You can contact Cyan Worlds, Inc. by email legal@cyan.com |
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or by snail mail at: |
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Cyan Worlds, Inc. |
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14617 N Newport Hwy |
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Mead, WA 99021 |
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*==LICENSE==*/ |
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#ifndef _HS_ALIGNED_ALLOCATOR_H |
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#define _HS_ALIGNED_ALLOCATOR_H |
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#include "HeadSpin.h" |
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template<class T, size_t ALIGNMENT=16> |
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/**
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* An aligned allocator for storing SIMD ready values in STL containers |
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* \remarks Based on https://gist.github.com/donny-dont/1471329
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*/ |
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class hsAlignedAllocator |
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{ |
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hsAlignedAllocator& operator=(const hsAlignedAllocator&) { } |
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public: |
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template <typename U, size_t ALIGNMENT=16> |
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struct rebind |
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{ |
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typedef hsAlignedAllocator<U, ALIGNMENT> other; |
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}; |
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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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typedef T value_type; |
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typedef size_t size_type; |
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typedef ptrdiff_t difference_type; |
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hsAlignedAllocator() { } |
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hsAlignedAllocator(const hsAlignedAllocator&) { } |
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template <typename U> hsAlignedAllocator(const hsAlignedAllocator<U, ALIGNMENT>&) { } |
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~hsAlignedAllocator() { } |
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pointer address(reference r) const { return &r; } |
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const_pointer address(const_reference r) const { return &r; } |
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pointer allocate(size_type size, const_pointer hint=nullptr) |
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{ |
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if (size == 0) |
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return nullptr; |
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if (size > max_size()) |
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throw std::length_error("integer overflow"); |
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#ifdef HS_BUILD_FOR_WIN32 |
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void* ptr = _aligned_malloc(size * sizeof(value_type), ALIGNMENT); |
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#else |
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void* ptr = nullptr; |
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posix_memalign(&ptr, ALIGNMENT, size * sizeof(value_type)); |
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#endif // HS_BUILD_FOR_WIN32
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if (!ptr) |
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throw std::bad_alloc(); |
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return static_cast<pointer>(ptr); |
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} |
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void construct(T* const p, const_reference t) const |
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{ |
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void * const pv = static_cast<void *>(p); |
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new (pv) value_type(t); |
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} |
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void deallocate(pointer ptr, size_type size) |
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{ |
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#ifdef HS_BUILD_FOR_WIN32 |
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_aligned_free(ptr); |
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#else |
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free(ptr); |
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#endif // HS_BUILD_FOR_WIN32
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} |
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void destroy(T* const p) const |
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{ |
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p->~T(); |
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} |
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size_type max_size() const |
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{ |
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return static_cast<size_t>(-1) / sizeof(value_type); |
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} |
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bool operator==(const hsAlignedAllocator& other) const { return true; } |
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}; |
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#endif // _HS_ALIGNED_ALLOCATOR_H
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