| 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 |
| 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 * Library General Public License for more details. | 12 * Library General Public License for more details. |
| 13 * | 13 * |
| 14 * You should have received a copy of the GNU Library General Public License | 14 * You should have received a copy of the GNU Library General Public License |
| 15 * along with this library; see the file COPYING.LIB. If not, write to | 15 * along with this library; see the file COPYING.LIB. If not, write to |
| 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 17 * Boston, MA 02110-1301, USA. | 17 * Boston, MA 02110-1301, USA. |
| 18 * | 18 * |
| 19 */ | 19 */ |
| 20 | 20 |
| 21 #ifndef WTF_Alignment_h | 21 #ifndef WTF_Alignment_h |
| 22 #define WTF_Alignment_h | 22 #define WTF_Alignment_h |
| 23 | 23 |
| 24 #include "wtf/Compiler.h" | 24 #include "platform/wtf/Compiler.h" |
| 25 #include <algorithm> | 25 #include <algorithm> |
| 26 #include <stdint.h> | 26 #include <stdint.h> |
| 27 #include <utility> | 27 #include <utility> |
| 28 | 28 |
| 29 namespace WTF { | 29 namespace WTF { |
| 30 | 30 |
| 31 #if COMPILER(GCC) | 31 #if COMPILER(GCC) |
| 32 #define WTF_ALIGN_OF(type) __alignof__(type) | 32 #define WTF_ALIGN_OF(type) __alignof__(type) |
| 33 #define WTF_ALIGNED(variable_type, variable, n) \ | 33 #define WTF_ALIGNED(variable_type, variable, n) \ |
| 34 variable_type variable __attribute__((__aligned__(n))) | 34 variable_type variable __attribute__((__aligned__(n))) |
| 35 #elif COMPILER(MSVC) | 35 #elif COMPILER(MSVC) |
| 36 #define WTF_ALIGN_OF(type) __alignof(type) | 36 #define WTF_ALIGN_OF(type) __alignof(type) |
| 37 #define WTF_ALIGNED(variable_type, variable, n) \ | 37 #define WTF_ALIGNED(variable_type, variable, n) \ |
| 38 __declspec(align(n)) variable_type variable | 38 __declspec(align(n)) variable_type variable |
| 39 #else | 39 #else |
| 40 #error WTF_ALIGN macros need alignment control. | 40 #error WTF_ALIGN macros need alignment control. |
| 41 #endif | 41 #endif |
| 42 | 42 |
| 43 #if COMPILER(GCC) | 43 #if COMPILER(GCC) |
| 44 typedef char __attribute__((__may_alias__)) AlignedBufferChar; | 44 typedef char __attribute__((__may_alias__)) AlignedBufferChar; // NOLINT |
| 45 #else | 45 #else |
| 46 typedef char AlignedBufferChar; | 46 typedef char AlignedBufferChar; |
| 47 #endif | 47 #endif |
| 48 | 48 |
| 49 template <size_t size, size_t alignment> | 49 template <size_t size, size_t alignment> |
| 50 struct AlignedBuffer; | 50 struct AlignedBuffer; |
| 51 template <size_t size> | 51 template <size_t size> |
| 52 struct AlignedBuffer<size, 1> { | 52 struct AlignedBuffer<size, 1> { |
| 53 AlignedBufferChar buffer[size]; | 53 AlignedBufferChar buffer[size]; |
| 54 }; | 54 }; |
| (...skipping 30 matching lines...) Expand all Loading... |
| 85 } | 85 } |
| 86 | 86 |
| 87 template <uintptr_t mask> | 87 template <uintptr_t mask> |
| 88 inline bool isAlignedTo(const void* pointer) { | 88 inline bool isAlignedTo(const void* pointer) { |
| 89 return !(reinterpret_cast<uintptr_t>(pointer) & mask); | 89 return !(reinterpret_cast<uintptr_t>(pointer) & mask); |
| 90 } | 90 } |
| 91 | 91 |
| 92 } // namespace WTF | 92 } // namespace WTF |
| 93 | 93 |
| 94 #endif // WTF_Alignment_h | 94 #endif // WTF_Alignment_h |
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