| OLD | NEW |
| 1 /* | 1 /* |
| 2 * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. | 2 * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * This library is free software; you can redistribute it and/or | 4 * This library is free software; you can redistribute it and/or |
| 5 * modify it under the terms of the GNU Library General Public | 5 * modify it under the terms of the GNU Library General Public |
| 6 * License as published by the Free Software Foundation; either | 6 * License as published by the Free Software Foundation; either |
| 7 * version 2 of the License, or (at your option) any later version. | 7 * version 2 of the License, or (at your option) any later version. |
| 8 * | 8 * |
| 9 * This library is distributed in the hope that it will be useful, | 9 * This library is distributed in the hope that it will be useful, |
| 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| (...skipping 25 matching lines...) Expand all Loading... |
| 36 #else | 36 #else |
| 37 #error WTF_ALIGN macros need alignment control. | 37 #error WTF_ALIGN macros need alignment control. |
| 38 #endif | 38 #endif |
| 39 | 39 |
| 40 #if COMPILER(GCC) | 40 #if COMPILER(GCC) |
| 41 typedef char __attribute__((__may_alias__)) AlignedBufferChar; | 41 typedef char __attribute__((__may_alias__)) AlignedBufferChar; |
| 42 #else | 42 #else |
| 43 typedef char AlignedBufferChar; | 43 typedef char AlignedBufferChar; |
| 44 #endif | 44 #endif |
| 45 | 45 |
| 46 template <size_t size, size_t alignment> struct AlignedBuffer; | 46 template <size_t size, size_t alignment> |
| 47 template <size_t size> struct AlignedBuffer<size, 1> { AlignedBufferChar buffer[
size]; }; | 47 struct AlignedBuffer; |
| 48 template <size_t size> struct AlignedBuffer<size, 2> { WTF_ALIGNED(AlignedBuffer
Char, buffer[size], 2); }; | 48 template <size_t size> |
| 49 template <size_t size> struct AlignedBuffer<size, 4> { WTF_ALIGNED(AlignedBuffer
Char, buffer[size], 4); }; | 49 struct AlignedBuffer<size, 1> { AlignedBufferChar buffer[size]; }; |
| 50 template <size_t size> struct AlignedBuffer<size, 8> { WTF_ALIGNED(AlignedBuffer
Char, buffer[size], 8); }; | 50 template <size_t size> |
| 51 template <size_t size> struct AlignedBuffer<size, 16> { WTF_ALIGNED(AlignedBuffe
rChar, buffer[size], 16); }; | 51 struct AlignedBuffer<size, 2> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 2);
}; |
| 52 template <size_t size> struct AlignedBuffer<size, 32> { WTF_ALIGNED(AlignedBuffe
rChar, buffer[size], 32); }; | 52 template <size_t size> |
| 53 template <size_t size> struct AlignedBuffer<size, 64> { WTF_ALIGNED(AlignedBuffe
rChar, buffer[size], 64); }; | 53 struct AlignedBuffer<size, 4> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 4);
}; |
| 54 template <size_t size> |
| 55 struct AlignedBuffer<size, 8> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 8);
}; |
| 56 template <size_t size> |
| 57 struct AlignedBuffer<size, 16> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 16
); }; |
| 58 template <size_t size> |
| 59 struct AlignedBuffer<size, 32> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 32
); }; |
| 60 template <size_t size> |
| 61 struct AlignedBuffer<size, 64> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 64
); }; |
| 54 | 62 |
| 55 template <size_t size, size_t alignment> | 63 template <size_t size, size_t alignment> |
| 56 void swap(AlignedBuffer<size, alignment>& a, AlignedBuffer<size, alignment>& b) | 64 void swap(AlignedBuffer<size, alignment>& a, AlignedBuffer<size, alignment>& b)
{ |
| 57 { | 65 for (size_t i = 0; i < size; ++i) |
| 58 for (size_t i = 0; i < size; ++i) | 66 std::swap(a.buffer[i], b.buffer[i]); |
| 59 std::swap(a.buffer[i], b.buffer[i]); | |
| 60 } | 67 } |
| 61 | 68 |
| 62 template <uintptr_t mask> | 69 template <uintptr_t mask> |
| 63 inline bool isAlignedTo(const void* pointer) | 70 inline bool isAlignedTo(const void* pointer) { |
| 64 { | 71 return !(reinterpret_cast<uintptr_t>(pointer) & mask); |
| 65 return !(reinterpret_cast<uintptr_t>(pointer) & mask); | |
| 66 } | 72 } |
| 67 | 73 |
| 68 } // namespace WTF | 74 } // namespace WTF |
| 69 | 75 |
| 70 #endif // WTF_Alignment_h | 76 #endif // WTF_Alignment_h |
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