| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "arena_bit_vector.h" |
| |
| #include "allocator.h" |
| #include "arena_allocator.h" |
| |
| namespace art { |
| |
| template <bool kCount> |
| class ArenaBitVectorAllocatorKindImpl; |
| |
| template <> |
| class ArenaBitVectorAllocatorKindImpl<false> { |
| public: |
| // Not tracking allocations, ignore the supplied kind and arbitrarily provide kArenaAllocSTL. |
| explicit ArenaBitVectorAllocatorKindImpl(ArenaAllocKind kind ATTRIBUTE_UNUSED) {} |
| ArenaBitVectorAllocatorKindImpl(const ArenaBitVectorAllocatorKindImpl&) = default; |
| ArenaBitVectorAllocatorKindImpl& operator=(const ArenaBitVectorAllocatorKindImpl&) = default; |
| ArenaAllocKind Kind() { return kArenaAllocGrowableBitMap; } |
| }; |
| |
| template <bool kCount> |
| class ArenaBitVectorAllocatorKindImpl { |
| public: |
| explicit ArenaBitVectorAllocatorKindImpl(ArenaAllocKind kind) : kind_(kind) { } |
| ArenaBitVectorAllocatorKindImpl(const ArenaBitVectorAllocatorKindImpl&) = default; |
| ArenaBitVectorAllocatorKindImpl& operator=(const ArenaBitVectorAllocatorKindImpl&) = default; |
| ArenaAllocKind Kind() { return kind_; } |
| |
| private: |
| ArenaAllocKind kind_; |
| }; |
| |
| using ArenaBitVectorAllocatorKind = |
| ArenaBitVectorAllocatorKindImpl<kArenaAllocatorCountAllocations>; |
| |
| template <typename ArenaAlloc> |
| class ArenaBitVectorAllocator FINAL : public Allocator, private ArenaBitVectorAllocatorKind { |
| public: |
| static ArenaBitVectorAllocator* Create(ArenaAlloc* allocator, ArenaAllocKind kind) { |
| void* storage = allocator->template Alloc<ArenaBitVectorAllocator>(kind); |
| return new (storage) ArenaBitVectorAllocator(allocator, kind); |
| } |
| |
| ~ArenaBitVectorAllocator() { |
| LOG(FATAL) << "UNREACHABLE"; |
| UNREACHABLE(); |
| } |
| |
| virtual void* Alloc(size_t size) { |
| return allocator_->Alloc(size, this->Kind()); |
| } |
| |
| virtual void Free(void*) {} // Nop. |
| |
| private: |
| ArenaBitVectorAllocator(ArenaAlloc* allocator, ArenaAllocKind kind) |
| : ArenaBitVectorAllocatorKind(kind), allocator_(allocator) { } |
| |
| ArenaAlloc* const allocator_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ArenaBitVectorAllocator); |
| }; |
| |
| ArenaBitVector::ArenaBitVector(ArenaAllocator* allocator, |
| unsigned int start_bits, |
| bool expandable, |
| ArenaAllocKind kind) |
| : BitVector(start_bits, |
| expandable, |
| ArenaBitVectorAllocator<ArenaAllocator>::Create(allocator, kind)) { |
| } |
| |
| ArenaBitVector::ArenaBitVector(ScopedArenaAllocator* allocator, |
| unsigned int start_bits, |
| bool expandable, |
| ArenaAllocKind kind) |
| : BitVector(start_bits, |
| expandable, |
| ArenaBitVectorAllocator<ScopedArenaAllocator>::Create(allocator, kind)) { |
| } |
| |
| } // namespace art |