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Side by Side Diff: third_party/crashpad/crashpad/util/stdlib/aligned_allocator.h

Issue 2932053002: Use C++11 alignment primitives (Closed)
Patch Set: Fix merge Created 3 years, 6 months ago
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1 // Copyright 2015 The Crashpad Authors. All rights reserved. 1 // Copyright 2015 The Crashpad Authors. All rights reserved.
2 // 2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); 3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License. 4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at 5 // You may obtain a copy of the License at
6 // 6 //
7 // http://www.apache.org/licenses/LICENSE-2.0 7 // http://www.apache.org/licenses/LICENSE-2.0
8 // 8 //
9 // Unless required by applicable law or agreed to in writing, software 9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, 10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and 12 // See the License for the specific language governing permissions and
13 // limitations under the License. 13 // limitations under the License.
14 14
15 #ifndef CRASHPAD_UTIL_STDLIB_ALIGNED_ALLOCATOR_H_ 15 #ifndef CRASHPAD_UTIL_STDLIB_ALIGNED_ALLOCATOR_H_
16 #define CRASHPAD_UTIL_STDLIB_ALIGNED_ALLOCATOR_H_ 16 #define CRASHPAD_UTIL_STDLIB_ALIGNED_ALLOCATOR_H_
17 17
18 #include <stddef.h> 18 #include <stddef.h>
19 19
20 #include <limits> 20 #include <limits>
21 #include <memory> 21 #include <memory>
22 #include <new> 22 #include <new>
23 #include <utility> 23 #include <utility>
24 #include <vector> 24 #include <vector>
25 25
26 #include "base/compiler_specific.h"
27 #include "build/build_config.h" 26 #include "build/build_config.h"
28 #include "util/stdlib/cxx.h" 27 #include "util/stdlib/cxx.h"
29 28
30 #if defined(COMPILER_MSVC) && _MSC_VER < 1900 29 #if defined(COMPILER_MSVC) && _MSC_VER < 1900
31 #define CRASHPAD_NOEXCEPT _NOEXCEPT 30 #define CRASHPAD_NOEXCEPT _NOEXCEPT
32 #else 31 #else
33 #define CRASHPAD_NOEXCEPT noexcept 32 #define CRASHPAD_NOEXCEPT noexcept
34 #endif 33 #endif
35 34
36 namespace crashpad { 35 namespace crashpad {
(...skipping 11 matching lines...) Expand all
48 void AlignedFree(void* pointer); 47 void AlignedFree(void* pointer);
49 48
50 } // namespace internal 49 } // namespace internal
51 50
52 //! \brief A standard allocator that aligns its allocations as requested, 51 //! \brief A standard allocator that aligns its allocations as requested,
53 //! suitable for use as an allocator in standard containers. 52 //! suitable for use as an allocator in standard containers.
54 //! 53 //!
55 //! This is similar to `std::allocator<T>`, with the addition of an alignment 54 //! This is similar to `std::allocator<T>`, with the addition of an alignment
56 //! guarantee. \a Alignment must be a power of 2. If \a Alignment is not 55 //! guarantee. \a Alignment must be a power of 2. If \a Alignment is not
57 //! specified, the default alignment for type \a T is used. 56 //! specified, the default alignment for type \a T is used.
58 template <class T, size_t Alignment = ALIGNOF(T)> 57 template <class T, size_t Alignment = alignof(T)>
59 struct AlignedAllocator { 58 struct AlignedAllocator {
60 public: 59 public:
61 using value_type = T; 60 using value_type = T;
62 using pointer = T*; 61 using pointer = T*;
63 using const_pointer = const T*; 62 using const_pointer = const T*;
64 using reference = T&; 63 using reference = T&;
65 using const_reference = const T&; 64 using const_reference = const T&;
66 using size_type = size_t; 65 using size_type = size_t;
67 using difference_type = ptrdiff_t; 66 using difference_type = ptrdiff_t;
68 67
(...skipping 54 matching lines...) Expand 10 before | Expand all | Expand 10 after
123 bool operator!=(const AlignedAllocator<T1, Alignment>& lhs, 122 bool operator!=(const AlignedAllocator<T1, Alignment>& lhs,
124 const AlignedAllocator<T2, Alignment>& rhs) CRASHPAD_NOEXCEPT { 123 const AlignedAllocator<T2, Alignment>& rhs) CRASHPAD_NOEXCEPT {
125 return false; 124 return false;
126 } 125 }
127 126
128 //! \brief A `std::vector` using AlignedAllocator. 127 //! \brief A `std::vector` using AlignedAllocator.
129 //! 128 //!
130 //! This is similar to `std::vector<T>`, with the addition of an alignment 129 //! This is similar to `std::vector<T>`, with the addition of an alignment
131 //! guarantee. \a Alignment must be a power of 2. If \a Alignment is not 130 //! guarantee. \a Alignment must be a power of 2. If \a Alignment is not
132 //! specified, the default alignment for type \a T is used. 131 //! specified, the default alignment for type \a T is used.
133 template <typename T, size_t Alignment = ALIGNOF(T)> 132 template <typename T, size_t Alignment = alignof(T)>
134 using AlignedVector = std::vector<T, AlignedAllocator<T, Alignment>>; 133 using AlignedVector = std::vector<T, AlignedAllocator<T, Alignment>>;
135 134
136 } // namespace crashpad 135 } // namespace crashpad
137 136
138 #undef CRASHPAD_NOEXCEPT 137 #undef CRASHPAD_NOEXCEPT
139 138
140 #endif // CRASHPAD_UTIL_STDLIB_ALIGNED_ALLOCATOR_H_ 139 #endif // CRASHPAD_UTIL_STDLIB_ALIGNED_ALLOCATOR_H_
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