1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ART_RUNTIME_BASE_ARENA_BIT_VECTOR_H_ 18 #define ART_RUNTIME_BASE_ARENA_BIT_VECTOR_H_ 19 20 #include "base/arena_object.h" 21 #include "base/bit_vector.h" 22 23 namespace art { 24 25 class ArenaAllocator; 26 class ScopedArenaAllocator; 27 28 /* 29 * A BitVector implementation that uses Arena allocation. 30 */ 31 class ArenaBitVector : public BitVector, public ArenaObject<kArenaAllocGrowableBitMap> { 32 public: 33 template <typename Allocator> 34 static ArenaBitVector* Create(Allocator* arena, 35 uint32_t start_bits, 36 bool expandable, 37 ArenaAllocKind kind = kArenaAllocGrowableBitMap) { 38 void* storage = arena->template Alloc<ArenaBitVector>(kind); 39 return new (storage) ArenaBitVector(arena, start_bits, expandable, kind); 40 } 41 42 ArenaBitVector(ArenaAllocator* arena, 43 uint32_t start_bits, 44 bool expandable, 45 ArenaAllocKind kind = kArenaAllocGrowableBitMap); 46 ArenaBitVector(ScopedArenaAllocator* arena, 47 uint32_t start_bits, 48 bool expandable, 49 ArenaAllocKind kind = kArenaAllocGrowableBitMap); 50 ~ArenaBitVector() {} 51 52 private: 53 DISALLOW_COPY_AND_ASSIGN(ArenaBitVector); 54 }; 55 56 } // namespace art 57 58 #endif // ART_RUNTIME_BASE_ARENA_BIT_VECTOR_H_ 59
