Move Source/WTF/wtf to Source/wtf

Source/WTF/wtf/Alignment.h

-/*
- *  Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
- *
- *  This library is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU Library General Public
- *  License as published by the Free Software Foundation; either
- *  version 2 of the License, or (at your option) any later version.
- *
- *  This library 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
- *  Library General Public License for more details.
- *
- *  You should have received a copy of the GNU Library General Public License
- *  along with this library; see the file COPYING.LIB.  If not, write to
- *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- *  Boston, MA 02110-1301, USA.
- *
- */
-
-#ifndef WTF_Alignment_h
-#define WTF_Alignment_h
-
-#include <wtf/Platform.h>
-#include <algorithm>
-#include <stdint.h>
-
-
-namespace WTF {
-
-#if COMPILER(GCC) || COMPILER(MINGW) || COMPILER(RVCT) || COMPILER(GCCE) || (COMPILER(SUNCC) && __SUNPRO_CC > 0x590)
-    #define WTF_ALIGN_OF(type) __alignof__(type)
-    #define WTF_ALIGNED(variable_type, variable, n) variable_type variable __attribute__((__aligned__(n)))
-#elif COMPILER(MSVC)
-    #define WTF_ALIGN_OF(type) __alignof(type)
-    #define WTF_ALIGNED(variable_type, variable, n) __declspec(align(n)) variable_type variable
-#else
-    #error WTF_ALIGN macros need alignment control.
-#endif
-
-#if COMPILER(GCC) && !COMPILER(INTEL) && (((__GNUC__ * 100) + __GNUC_MINOR__) >= 303)
-    typedef char __attribute__((__may_alias__)) AlignedBufferChar; 
-#else
-    typedef char AlignedBufferChar; 
-#endif
-
-    template<size_t size, size_t alignment> struct AlignedBuffer;
-    template<size_t size> struct AlignedBuffer<size, 1> { AlignedBufferChar buffer[size]; };
-    template<size_t size> struct AlignedBuffer<size, 2> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 2);  };
-    template<size_t size> struct AlignedBuffer<size, 4> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 4);  };
-    template<size_t size> struct AlignedBuffer<size, 8> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 8);  };
-    template<size_t size> struct AlignedBuffer<size, 16> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 16); };
-    template<size_t size> struct AlignedBuffer<size, 32> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 32); };
-    template<size_t size> struct AlignedBuffer<size, 64> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 64); };
-
-    template <size_t size, size_t alignment>
-    void swap(AlignedBuffer<size, alignment>& a, AlignedBuffer<size, alignment>& b)
-    {
-        for (size_t i = 0; i < size; ++i)
-            std::swap(a.buffer[i], b.buffer[i]);
-    }
-
-    template <uintptr_t mask>
-    inline bool isAlignedTo(const void* pointer)
-    {
-        return !(reinterpret_cast<uintptr_t>(pointer) & mask);
-    }
-}
-
-#endif // WTF_Alignment_h