1 /* 2 * Copyright (C) 2011 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 #include "arena_allocator.h" 18 #include "arena_bit_vector.h" 19 20 namespace art { 21 22 template <typename ArenaAlloc> 23 class ArenaBitVectorAllocator : public Allocator { 24 public: 25 explicit ArenaBitVectorAllocator(ArenaAlloc* arena) : arena_(arena) {} 26 ~ArenaBitVectorAllocator() {} 27 28 virtual void* Alloc(size_t size) { 29 return arena_->Alloc(size, kArenaAllocGrowableBitMap); 30 } 31 32 virtual void Free(void*) {} // Nop. 33 34 static void* operator new(size_t size, ArenaAlloc* arena) { 35 return arena->Alloc(sizeof(ArenaBitVectorAllocator), kArenaAllocGrowableBitMap); 36 } 37 static void operator delete(void* p) {} // Nop. 38 39 private: 40 ArenaAlloc* arena_; 41 DISALLOW_COPY_AND_ASSIGN(ArenaBitVectorAllocator); 42 }; 43 44 ArenaBitVector::ArenaBitVector(ArenaAllocator* arena, unsigned int start_bits, 45 bool expandable, OatBitMapKind kind) 46 : BitVector(start_bits, expandable, 47 new (arena) ArenaBitVectorAllocator<ArenaAllocator>(arena)), kind_(kind) { 48 UNUSED(kind_); 49 } 50 51 ArenaBitVector::ArenaBitVector(ScopedArenaAllocator* arena, unsigned int start_bits, 52 bool expandable, OatBitMapKind kind) 53 : BitVector(start_bits, expandable, 54 new (arena) ArenaBitVectorAllocator<ScopedArenaAllocator>(arena)), kind_(kind) { 55 UNUSED(kind_); 56 } 57 58 } // namespace art 59
