upload android base code part3
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183
android/art/runtime/utils/dex_cache_arrays_layout-inl.h
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183
android/art/runtime/utils/dex_cache_arrays_layout-inl.h
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/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_RUNTIME_UTILS_DEX_CACHE_ARRAYS_LAYOUT_INL_H_
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#define ART_RUNTIME_UTILS_DEX_CACHE_ARRAYS_LAYOUT_INL_H_
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#include "dex_cache_arrays_layout.h"
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#include "base/bit_utils.h"
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#include "base/logging.h"
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#include "gc_root.h"
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#include "globals.h"
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#include "mirror/dex_cache.h"
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#include "primitive.h"
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namespace art {
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inline DexCacheArraysLayout::DexCacheArraysLayout(PointerSize pointer_size,
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const DexFile::Header& header,
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uint32_t num_call_sites)
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: pointer_size_(pointer_size),
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/* types_offset_ is always 0u, so it's constexpr */
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methods_offset_(
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RoundUp(types_offset_ + TypesSize(header.type_ids_size_), MethodsAlignment())),
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strings_offset_(
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RoundUp(methods_offset_ + MethodsSize(header.method_ids_size_), StringsAlignment())),
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fields_offset_(
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RoundUp(strings_offset_ + StringsSize(header.string_ids_size_), FieldsAlignment())),
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method_types_offset_(
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RoundUp(fields_offset_ + FieldsSize(header.field_ids_size_), MethodTypesAlignment())),
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call_sites_offset_(
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RoundUp(method_types_offset_ + MethodTypesSize(header.proto_ids_size_),
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MethodTypesAlignment())),
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size_(RoundUp(call_sites_offset_ + CallSitesSize(num_call_sites), Alignment())) {
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}
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inline DexCacheArraysLayout::DexCacheArraysLayout(PointerSize pointer_size, const DexFile* dex_file)
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: DexCacheArraysLayout(pointer_size, dex_file->GetHeader(), dex_file->NumCallSiteIds()) {
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}
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inline size_t DexCacheArraysLayout::Alignment() const {
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return Alignment(pointer_size_);
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}
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inline constexpr size_t DexCacheArraysLayout::Alignment(PointerSize pointer_size) {
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// mirror::Type/String/MethodTypeDexCacheType alignment is 8,
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// i.e. higher than or equal to the pointer alignment.
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static_assert(alignof(mirror::TypeDexCacheType) == 8,
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"Expecting alignof(ClassDexCacheType) == 8");
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static_assert(alignof(mirror::StringDexCacheType) == 8,
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"Expecting alignof(StringDexCacheType) == 8");
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static_assert(alignof(mirror::MethodTypeDexCacheType) == 8,
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"Expecting alignof(MethodTypeDexCacheType) == 8");
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// This is the same as alignof({Field,Method}DexCacheType) for the given pointer size.
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return 2u * static_cast<size_t>(pointer_size);
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}
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template <typename T>
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constexpr PointerSize GcRootAsPointerSize() {
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static_assert(sizeof(GcRoot<T>) == 4U, "Unexpected GcRoot size");
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return PointerSize::k32;
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}
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inline size_t DexCacheArraysLayout::TypeOffset(dex::TypeIndex type_idx) const {
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return types_offset_ + ElementOffset(PointerSize::k64,
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type_idx.index_ % mirror::DexCache::kDexCacheTypeCacheSize);
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}
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inline size_t DexCacheArraysLayout::TypesSize(size_t num_elements) const {
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size_t cache_size = mirror::DexCache::kDexCacheTypeCacheSize;
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if (num_elements < cache_size) {
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cache_size = num_elements;
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}
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return PairArraySize(GcRootAsPointerSize<mirror::Class>(), cache_size);
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}
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inline size_t DexCacheArraysLayout::TypesAlignment() const {
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return alignof(GcRoot<mirror::Class>);
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}
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inline size_t DexCacheArraysLayout::MethodOffset(uint32_t method_idx) const {
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return methods_offset_ + ElementOffset(pointer_size_, method_idx);
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}
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inline size_t DexCacheArraysLayout::MethodsSize(size_t num_elements) const {
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size_t cache_size = mirror::DexCache::kDexCacheMethodCacheSize;
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if (num_elements < cache_size) {
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cache_size = num_elements;
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}
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return PairArraySize(pointer_size_, cache_size);
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}
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inline size_t DexCacheArraysLayout::MethodsAlignment() const {
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return 2u * static_cast<size_t>(pointer_size_);
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}
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inline size_t DexCacheArraysLayout::StringOffset(uint32_t string_idx) const {
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uint32_t string_hash = string_idx % mirror::DexCache::kDexCacheStringCacheSize;
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return strings_offset_ + ElementOffset(PointerSize::k64, string_hash);
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}
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inline size_t DexCacheArraysLayout::StringsSize(size_t num_elements) const {
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size_t cache_size = mirror::DexCache::kDexCacheStringCacheSize;
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if (num_elements < cache_size) {
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cache_size = num_elements;
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}
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return PairArraySize(GcRootAsPointerSize<mirror::String>(), cache_size);
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}
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inline size_t DexCacheArraysLayout::StringsAlignment() const {
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static_assert(alignof(mirror::StringDexCacheType) == 8,
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"Expecting alignof(StringDexCacheType) == 8");
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return alignof(mirror::StringDexCacheType);
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}
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inline size_t DexCacheArraysLayout::FieldOffset(uint32_t field_idx) const {
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uint32_t field_hash = field_idx % mirror::DexCache::kDexCacheFieldCacheSize;
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return fields_offset_ + 2u * static_cast<size_t>(pointer_size_) * field_hash;
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}
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inline size_t DexCacheArraysLayout::FieldsSize(size_t num_elements) const {
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size_t cache_size = mirror::DexCache::kDexCacheFieldCacheSize;
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if (num_elements < cache_size) {
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cache_size = num_elements;
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}
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return PairArraySize(pointer_size_, cache_size);
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}
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inline size_t DexCacheArraysLayout::FieldsAlignment() const {
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return 2u * static_cast<size_t>(pointer_size_);
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}
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inline size_t DexCacheArraysLayout::MethodTypesSize(size_t num_elements) const {
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size_t cache_size = mirror::DexCache::kDexCacheMethodTypeCacheSize;
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if (num_elements < cache_size) {
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cache_size = num_elements;
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}
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return ArraySize(PointerSize::k64, cache_size);
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}
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inline size_t DexCacheArraysLayout::MethodTypesAlignment() const {
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static_assert(alignof(mirror::MethodTypeDexCacheType) == 8,
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"Expecting alignof(MethodTypeDexCacheType) == 8");
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return alignof(mirror::MethodTypeDexCacheType);
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}
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inline size_t DexCacheArraysLayout::CallSitesSize(size_t num_elements) const {
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return ArraySize(GcRootAsPointerSize<mirror::CallSite>(), num_elements);
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}
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inline size_t DexCacheArraysLayout::CallSitesAlignment() const {
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return alignof(GcRoot<mirror::CallSite>);
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}
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inline size_t DexCacheArraysLayout::ElementOffset(PointerSize element_size, uint32_t idx) {
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return static_cast<size_t>(element_size) * idx;
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}
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inline size_t DexCacheArraysLayout::ArraySize(PointerSize element_size, uint32_t num_elements) {
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return static_cast<size_t>(element_size) * num_elements;
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}
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inline size_t DexCacheArraysLayout::PairArraySize(PointerSize element_size, uint32_t num_elements) {
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return 2u * static_cast<size_t>(element_size) * num_elements;
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}
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} // namespace art
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#endif // ART_RUNTIME_UTILS_DEX_CACHE_ARRAYS_LAYOUT_INL_H_
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138
android/art/runtime/utils/dex_cache_arrays_layout.h
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138
android/art/runtime/utils/dex_cache_arrays_layout.h
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@ -0,0 +1,138 @@
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/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_RUNTIME_UTILS_DEX_CACHE_ARRAYS_LAYOUT_H_
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#define ART_RUNTIME_UTILS_DEX_CACHE_ARRAYS_LAYOUT_H_
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#include "dex_file.h"
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#include "dex_file_types.h"
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namespace art {
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/**
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* @class DexCacheArraysLayout
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* @details This class provides the layout information for the type, method, field and
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* string arrays for a DexCache with a fixed arrays' layout (such as in the boot image),
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*/
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class DexCacheArraysLayout {
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public:
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// Construct an invalid layout.
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DexCacheArraysLayout()
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: /* types_offset_ is always 0u */
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pointer_size_(kRuntimePointerSize),
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methods_offset_(0u),
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strings_offset_(0u),
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fields_offset_(0u),
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method_types_offset_(0u),
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call_sites_offset_(0u),
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size_(0u) {
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}
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// Construct a layout for a particular dex file header.
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DexCacheArraysLayout(PointerSize pointer_size,
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const DexFile::Header& header,
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uint32_t num_call_sites);
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// Construct a layout for a particular dex file.
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DexCacheArraysLayout(PointerSize pointer_size, const DexFile* dex_file);
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bool Valid() const {
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return Size() != 0u;
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}
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size_t Size() const {
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return size_;
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}
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size_t Alignment() const;
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static constexpr size_t Alignment(PointerSize pointer_size);
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size_t TypesOffset() const {
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return types_offset_;
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}
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size_t TypeOffset(dex::TypeIndex type_idx) const;
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size_t TypesSize(size_t num_elements) const;
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size_t TypesAlignment() const;
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size_t MethodsOffset() const {
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return methods_offset_;
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}
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size_t MethodOffset(uint32_t method_idx) const;
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size_t MethodsSize(size_t num_elements) const;
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size_t MethodsAlignment() const;
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size_t StringsOffset() const {
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return strings_offset_;
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}
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size_t StringOffset(uint32_t string_idx) const;
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size_t StringsSize(size_t num_elements) const;
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size_t StringsAlignment() const;
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size_t FieldsOffset() const {
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return fields_offset_;
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}
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size_t FieldOffset(uint32_t field_idx) const;
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size_t FieldsSize(size_t num_elements) const;
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size_t FieldsAlignment() const;
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size_t MethodTypesOffset() const {
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return method_types_offset_;
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}
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size_t MethodTypesSize(size_t num_elements) const;
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size_t MethodTypesAlignment() const;
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size_t CallSitesOffset() const {
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return call_sites_offset_;
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}
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size_t CallSitesSize(size_t num_elements) const;
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size_t CallSitesAlignment() const;
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private:
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static constexpr size_t types_offset_ = 0u;
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const PointerSize pointer_size_; // Must be first for construction initialization order.
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const size_t methods_offset_;
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const size_t strings_offset_;
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const size_t fields_offset_;
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const size_t method_types_offset_;
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const size_t call_sites_offset_;
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const size_t size_;
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static size_t ElementOffset(PointerSize element_size, uint32_t idx);
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static size_t ArraySize(PointerSize element_size, uint32_t num_elements);
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static size_t PairArraySize(PointerSize element_size, uint32_t num_elements);
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};
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} // namespace art
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#endif // ART_RUNTIME_UTILS_DEX_CACHE_ARRAYS_LAYOUT_H_
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