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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef ContiguousContainer_h | 5 #ifndef ContiguousContainer_h |
6 #define ContiguousContainer_h | 6 #define ContiguousContainer_h |
7 | 7 |
8 #include "platform/PlatformExport.h" | 8 #include "platform/PlatformExport.h" |
9 #include "wtf/Alignment.h" | 9 #include "wtf/Alignment.h" |
10 #include "wtf/Allocator.h" | 10 #include "wtf/Allocator.h" |
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63 Vector<void*> m_elements; | 63 Vector<void*> m_elements; |
64 | 64 |
65 private: | 65 private: |
66 class Buffer; | 66 class Buffer; |
67 | 67 |
68 Buffer* allocateNewBufferForNextAllocation(size_t, const char* typeName); | 68 Buffer* allocateNewBufferForNextAllocation(size_t, const char* typeName); |
69 | 69 |
70 Vector<OwnPtr<Buffer>> m_buffers; | 70 Vector<OwnPtr<Buffer>> m_buffers; |
71 unsigned m_endIndex; | 71 unsigned m_endIndex; |
72 size_t m_maxObjectSize; | 72 size_t m_maxObjectSize; |
73 | |
74 // Makes Buffer accessible when clearing m_buffers. Fixes MSVC build. | |
75 friend struct WTF::OwnedPtrDeleter<Buffer>; | |
76 }; | 73 }; |
77 | 74 |
78 // For most cases, no alignment stricter than pointer alignment is required. If | 75 // For most cases, no alignment stricter than pointer alignment is required. If |
79 // one of the derived classes has stronger alignment requirements (and the | 76 // one of the derived classes has stronger alignment requirements (and the |
80 // static_assert fires), set alignment to the LCM of the derived class | 77 // static_assert fires), set alignment to the LCM of the derived class |
81 // alignments. For small structs without pointers, it may be possible to reduce | 78 // alignments. For small structs without pointers, it may be possible to reduce |
82 // alignment for tighter packing. | 79 // alignment for tighter packing. |
83 | 80 |
84 template <class BaseElementType, unsigned alignment = sizeof(void*)> | 81 template <class BaseElementType, unsigned alignment = sizeof(void*)> |
85 class ContiguousContainer : public ContiguousContainerBase { | 82 class ContiguousContainer : public ContiguousContainerBase { |
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214 ASSERT(alignedSize % alignment == 0); | 211 ASSERT(alignedSize % alignment == 0); |
215 ASSERT(alignedSize >= size); | 212 ASSERT(alignedSize >= size); |
216 ASSERT(alignedSize < size + alignment); | 213 ASSERT(alignedSize < size + alignment); |
217 return alignedSize; | 214 return alignedSize; |
218 } | 215 } |
219 }; | 216 }; |
220 | 217 |
221 } // namespace blink | 218 } // namespace blink |
222 | 219 |
223 #endif // ContiguousContainer_h | 220 #endif // ContiguousContainer_h |
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