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1 /* | 1 /* |
2 * Copyright (C) 2010 Google Inc. All rights reserved. | 2 * Copyright (C) 2010 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * | 7 * |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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122 template <class T> | 122 template <class T> |
123 void* allocateBase() { | 123 void* allocateBase() { |
124 void* ptr = 0; | 124 void* ptr = 0; |
125 size_t roundedSize = roundUp(sizeof(T), minAlignment<T>()); | 125 size_t roundedSize = roundUp(sizeof(T), minAlignment<T>()); |
126 if (m_current) | 126 if (m_current) |
127 ptr = m_current->allocate(roundedSize); | 127 ptr = m_current->allocate(roundedSize); |
128 | 128 |
129 if (!ptr) { | 129 if (!ptr) { |
130 if (roundedSize > m_currentChunkSize) | 130 if (roundedSize > m_currentChunkSize) |
131 m_currentChunkSize = roundedSize; | 131 m_currentChunkSize = roundedSize; |
132 m_chunks.append( | 132 m_chunks.push_back( |
133 WTF::wrapUnique(new Chunk(m_allocator.get(), m_currentChunkSize))); | 133 WTF::wrapUnique(new Chunk(m_allocator.get(), m_currentChunkSize))); |
134 m_current = m_chunks.back().get(); | 134 m_current = m_chunks.back().get(); |
135 ptr = m_current->allocate(roundedSize); | 135 ptr = m_current->allocate(roundedSize); |
136 } | 136 } |
137 return ptr; | 137 return ptr; |
138 } | 138 } |
139 | 139 |
140 // Rounds up the given allocation size to the specified alignment. | 140 // Rounds up the given allocation size to the specified alignment. |
141 size_t roundUp(size_t size, size_t alignment) { | 141 size_t roundUp(size_t size, size_t alignment) { |
142 ASSERT(!(alignment % 2)); | 142 ASSERT(!(alignment % 2)); |
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184 | 184 |
185 RefPtr<Allocator> m_allocator; | 185 RefPtr<Allocator> m_allocator; |
186 Chunk* m_current; | 186 Chunk* m_current; |
187 size_t m_currentChunkSize; | 187 size_t m_currentChunkSize; |
188 Vector<std::unique_ptr<Chunk>> m_chunks; | 188 Vector<std::unique_ptr<Chunk>> m_chunks; |
189 }; | 189 }; |
190 | 190 |
191 } // namespace blink | 191 } // namespace blink |
192 | 192 |
193 #endif // PODArena_h | 193 #endif // PODArena_h |
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