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Side by Side Diff: third_party/WebKit/Source/platform/wtf/Alignment.h

Issue 2755663002: Move files in wtf/ to platform/wtf/ (Part 2). (Closed)
Patch Set: Fix file name (facepalm). Created 3 years, 9 months ago
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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
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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