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

Issue 1611343002: wtf reformat test Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: pydent Created 4 years, 11 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
(...skipping 12 matching lines...) Expand all
23 23
24 #include "wtf/Compiler.h" 24 #include "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) variable_type variable __attribu te__((__aligned__(n))) 33 #define WTF_ALIGNED(variable_type, variable, n) \
34 variable_type variable __attribute__((__aligned__(n)))
34 #elif COMPILER(MSVC) 35 #elif COMPILER(MSVC)
35 #define WTF_ALIGN_OF(type) __alignof(type) 36 #define WTF_ALIGN_OF(type) __alignof(type)
36 #define WTF_ALIGNED(variable_type, variable, n) __declspec(align(n)) variable_ty pe variable 37 #define WTF_ALIGNED(variable_type, variable, n) \
38 __declspec(align(n)) variable_type variable
37 #else 39 #else
38 #error WTF_ALIGN macros need alignment control. 40 #error WTF_ALIGN macros need alignment control.
39 #endif 41 #endif
40 42
41 #if COMPILER(GCC) 43 #if COMPILER(GCC)
42 typedef char __attribute__((__may_alias__)) AlignedBufferChar; 44 typedef char __attribute__((__may_alias__)) AlignedBufferChar;
43 #else 45 #else
44 typedef char AlignedBufferChar; 46 typedef char AlignedBufferChar;
45 #endif 47 #endif
46 48
47 template <size_t size, size_t alignment> struct AlignedBuffer; 49 template <size_t size, size_t alignment>
48 template <size_t size> struct AlignedBuffer<size, 1> { AlignedBufferChar buffer[ size]; }; 50 struct AlignedBuffer;
49 template <size_t size> struct AlignedBuffer<size, 2> { WTF_ALIGNED(AlignedBuffer Char, buffer[size], 2); }; 51 template <size_t size>
50 template <size_t size> struct AlignedBuffer<size, 4> { WTF_ALIGNED(AlignedBuffer Char, buffer[size], 4); }; 52 struct AlignedBuffer<size, 1> {
51 template <size_t size> struct AlignedBuffer<size, 8> { WTF_ALIGNED(AlignedBuffer Char, buffer[size], 8); }; 53 AlignedBufferChar buffer[size];
52 template <size_t size> struct AlignedBuffer<size, 16> { WTF_ALIGNED(AlignedBuffe rChar, buffer[size], 16); }; 54 };
53 template <size_t size> struct AlignedBuffer<size, 32> { WTF_ALIGNED(AlignedBuffe rChar, buffer[size], 32); }; 55 template <size_t size>
54 template <size_t size> struct AlignedBuffer<size, 64> { WTF_ALIGNED(AlignedBuffe rChar, buffer[size], 64); }; 56 struct AlignedBuffer<size, 2> {
57 WTF_ALIGNED(AlignedBufferChar, buffer[size], 2);
58 };
59 template <size_t size>
60 struct AlignedBuffer<size, 4> {
61 WTF_ALIGNED(AlignedBufferChar, buffer[size], 4);
62 };
63 template <size_t size>
64 struct AlignedBuffer<size, 8> {
65 WTF_ALIGNED(AlignedBufferChar, buffer[size], 8);
66 };
67 template <size_t size>
68 struct AlignedBuffer<size, 16> {
69 WTF_ALIGNED(AlignedBufferChar, buffer[size], 16);
70 };
71 template <size_t size>
72 struct AlignedBuffer<size, 32> {
73 WTF_ALIGNED(AlignedBufferChar, buffer[size], 32);
74 };
75 template <size_t size>
76 struct AlignedBuffer<size, 64> {
77 WTF_ALIGNED(AlignedBufferChar, buffer[size], 64);
78 };
55 79
56 template <size_t size, size_t alignment> 80 template <size_t size, size_t alignment>
57 void swap(AlignedBuffer<size, alignment>& a, AlignedBuffer<size, alignment>& b) 81 void swap(AlignedBuffer<size, alignment>& a,
58 { 82 AlignedBuffer<size, alignment>& b) {
59 for (size_t i = 0; i < size; ++i) 83 for (size_t i = 0; i < size; ++i)
60 std::swap(a.buffer[i], b.buffer[i]); 84 std::swap(a.buffer[i], b.buffer[i]);
61 } 85 }
62 86
63 template <uintptr_t mask> 87 template <uintptr_t mask>
64 inline bool isAlignedTo(const void* pointer) 88 inline bool isAlignedTo(const void* pointer) {
65 { 89 return !(reinterpret_cast<uintptr_t>(pointer) & mask);
66 return !(reinterpret_cast<uintptr_t>(pointer) & mask);
67 } 90 }
68 91
69 } // namespace WTF 92 } // namespace WTF
70 93
71 #endif // WTF_Alignment_h 94 #endif // WTF_Alignment_h
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