| /* |
| * Copyright (C) 2015 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. |
| */ |
| |
| #ifndef ART_RUNTIME_UTILS_DEX_CACHE_ARRAYS_LAYOUT_INL_H_ |
| #define ART_RUNTIME_UTILS_DEX_CACHE_ARRAYS_LAYOUT_INL_H_ |
| |
| #include "dex_cache_arrays_layout.h" |
| |
| #include "base/bit_utils.h" |
| #include "base/logging.h" |
| #include "gc_root.h" |
| #include "globals.h" |
| #include "primitive.h" |
| |
| namespace art { |
| |
| inline DexCacheArraysLayout::DexCacheArraysLayout(size_t pointer_size, const DexFile* dex_file) |
| : pointer_size_(pointer_size), |
| /* types_offset_ is always 0u, so it's constexpr */ |
| methods_offset_(types_offset_ + |
| RoundUp(TypesSize(dex_file->NumTypeIds()), MethodsAlignment())), |
| strings_offset_(methods_offset_ + |
| RoundUp(MethodsSize(dex_file->NumMethodIds()), StringsAlignment())), |
| fields_offset_(strings_offset_ + |
| RoundUp(StringsSize(dex_file->NumStringIds()), FieldsAlignment())), |
| size_(fields_offset_ + |
| RoundUp(FieldsSize(dex_file->NumFieldIds()), Alignment())) { |
| DCHECK(ValidPointerSize(pointer_size)) << pointer_size; |
| } |
| |
| inline size_t DexCacheArraysLayout::Alignment() const { |
| // GcRoot<> alignment is 4, i.e. lower than or equal to the pointer alignment. |
| static_assert(alignof(GcRoot<mirror::Class>) == 4, "Expecting alignof(GcRoot<>) == 4"); |
| static_assert(alignof(GcRoot<mirror::String>) == 4, "Expecting alignof(GcRoot<>) == 4"); |
| DCHECK(pointer_size_ == 4u || pointer_size_ == 8u); |
| // Pointer alignment is the same as pointer size. |
| return pointer_size_; |
| } |
| |
| inline size_t DexCacheArraysLayout::TypeOffset(uint32_t type_idx) const { |
| return types_offset_ + ElementOffset(sizeof(GcRoot<mirror::Class>), type_idx); |
| } |
| |
| inline size_t DexCacheArraysLayout::TypesSize(size_t num_elements) const { |
| return ArraySize(sizeof(GcRoot<mirror::Class>), num_elements); |
| } |
| |
| inline size_t DexCacheArraysLayout::TypesAlignment() const { |
| return alignof(GcRoot<mirror::Class>); |
| } |
| |
| inline size_t DexCacheArraysLayout::MethodOffset(uint32_t method_idx) const { |
| return methods_offset_ + ElementOffset(pointer_size_, method_idx); |
| } |
| |
| inline size_t DexCacheArraysLayout::MethodsSize(size_t num_elements) const { |
| return ArraySize(pointer_size_, num_elements); |
| } |
| |
| inline size_t DexCacheArraysLayout::MethodsAlignment() const { |
| return pointer_size_; |
| } |
| |
| inline size_t DexCacheArraysLayout::StringOffset(uint32_t string_idx) const { |
| return strings_offset_ + ElementOffset(sizeof(GcRoot<mirror::String>), string_idx); |
| } |
| |
| inline size_t DexCacheArraysLayout::StringsSize(size_t num_elements) const { |
| return ArraySize(sizeof(GcRoot<mirror::String>), num_elements); |
| } |
| |
| inline size_t DexCacheArraysLayout::StringsAlignment() const { |
| return alignof(GcRoot<mirror::String>); |
| } |
| |
| inline size_t DexCacheArraysLayout::FieldOffset(uint32_t field_idx) const { |
| return fields_offset_ + ElementOffset(pointer_size_, field_idx); |
| } |
| |
| inline size_t DexCacheArraysLayout::FieldsSize(size_t num_elements) const { |
| return ArraySize(pointer_size_, num_elements); |
| } |
| |
| inline size_t DexCacheArraysLayout::FieldsAlignment() const { |
| return pointer_size_; |
| } |
| |
| inline size_t DexCacheArraysLayout::ElementOffset(size_t element_size, uint32_t idx) { |
| return element_size * idx; |
| } |
| |
| inline size_t DexCacheArraysLayout::ArraySize(size_t element_size, uint32_t num_elements) { |
| return element_size * num_elements; |
| } |
| |
| } // namespace art |
| |
| #endif // ART_RUNTIME_UTILS_DEX_CACHE_ARRAYS_LAYOUT_INL_H_ |