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/*
* 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 <android-base/logging.h>
#include "base/bit_utils.h"
#include "dex/primitive.h"
#include "gc_root.h"
#include "mirror/dex_cache.h"
#include "runtime_globals.h"
namespace art {
inline DexCacheArraysLayout::DexCacheArraysLayout(PointerSize pointer_size,
const DexFile::Header& header,
uint32_t num_call_sites)
: pointer_size_(pointer_size),
/* types_offset_ is always 0u, so it's constexpr */
methods_offset_(
RoundUp(types_offset_ + TypesSize(header.type_ids_size_), MethodsAlignment())),
strings_offset_(
RoundUp(methods_offset_ + MethodsSize(header.method_ids_size_), StringsAlignment())),
fields_offset_(
RoundUp(strings_offset_ + StringsSize(header.string_ids_size_), FieldsAlignment())),
method_types_offset_(
RoundUp(fields_offset_ + FieldsSize(header.field_ids_size_), MethodTypesAlignment())),
call_sites_offset_(
RoundUp(method_types_offset_ + MethodTypesSize(header.proto_ids_size_),
MethodTypesAlignment())),
size_(RoundUp(call_sites_offset_ + CallSitesSize(num_call_sites), Alignment())) {
}
inline DexCacheArraysLayout::DexCacheArraysLayout(PointerSize pointer_size, const DexFile* dex_file)
: DexCacheArraysLayout(pointer_size, dex_file->GetHeader(), dex_file->NumCallSiteIds()) {
}
inline size_t DexCacheArraysLayout::Alignment() const {
return Alignment(pointer_size_);
}
inline constexpr size_t DexCacheArraysLayout::Alignment(PointerSize pointer_size) {
// mirror::Type/String/MethodTypeDexCacheType alignment is 8,
// i.e. higher than or equal to the pointer alignment.
static_assert(alignof(mirror::TypeDexCacheType) == 8,
"Expecting alignof(ClassDexCacheType) == 8");
static_assert(alignof(mirror::StringDexCacheType) == 8,
"Expecting alignof(StringDexCacheType) == 8");
static_assert(alignof(mirror::MethodTypeDexCacheType) == 8,
"Expecting alignof(MethodTypeDexCacheType) == 8");
// This is the same as alignof({Field,Method}DexCacheType) for the given pointer size.
return 2u * static_cast<size_t>(pointer_size);
}
template <typename T>
constexpr PointerSize GcRootAsPointerSize() {
static_assert(sizeof(GcRoot<T>) == 4U, "Unexpected GcRoot size");
return PointerSize::k32;
}
inline size_t DexCacheArraysLayout::TypeOffset(dex::TypeIndex type_idx) const {
return types_offset_ + ElementOffset(PointerSize::k64,
type_idx.index_ % mirror::DexCache::kDexCacheTypeCacheSize);
}
inline size_t DexCacheArraysLayout::TypesSize(size_t num_elements) const {
size_t cache_size = mirror::DexCache::kDexCacheTypeCacheSize;
if (num_elements < cache_size) {
cache_size = num_elements;
}
return PairArraySize(GcRootAsPointerSize<mirror::Class>(), cache_size);
}
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 {
size_t cache_size = mirror::DexCache::kDexCacheMethodCacheSize;
if (num_elements < cache_size) {
cache_size = num_elements;
}
return PairArraySize(pointer_size_, cache_size);
}
inline size_t DexCacheArraysLayout::MethodsAlignment() const {
return 2u * static_cast<size_t>(pointer_size_);
}
inline size_t DexCacheArraysLayout::StringOffset(uint32_t string_idx) const {
uint32_t string_hash = string_idx % mirror::DexCache::kDexCacheStringCacheSize;
return strings_offset_ + ElementOffset(PointerSize::k64, string_hash);
}
inline size_t DexCacheArraysLayout::StringsSize(size_t num_elements) const {
size_t cache_size = mirror::DexCache::kDexCacheStringCacheSize;
if (num_elements < cache_size) {
cache_size = num_elements;
}
return PairArraySize(GcRootAsPointerSize<mirror::String>(), cache_size);
}
inline size_t DexCacheArraysLayout::StringsAlignment() const {
static_assert(alignof(mirror::StringDexCacheType) == 8,
"Expecting alignof(StringDexCacheType) == 8");
return alignof(mirror::StringDexCacheType);
}
inline size_t DexCacheArraysLayout::FieldOffset(uint32_t field_idx) const {
uint32_t field_hash = field_idx % mirror::DexCache::kDexCacheFieldCacheSize;
return fields_offset_ + 2u * static_cast<size_t>(pointer_size_) * field_hash;
}
inline size_t DexCacheArraysLayout::FieldsSize(size_t num_elements) const {
size_t cache_size = mirror::DexCache::kDexCacheFieldCacheSize;
if (num_elements < cache_size) {
cache_size = num_elements;
}
return PairArraySize(pointer_size_, cache_size);
}
inline size_t DexCacheArraysLayout::FieldsAlignment() const {
return 2u * static_cast<size_t>(pointer_size_);
}
inline size_t DexCacheArraysLayout::MethodTypesSize(size_t num_elements) const {
size_t cache_size = mirror::DexCache::kDexCacheMethodTypeCacheSize;
if (num_elements < cache_size) {
cache_size = num_elements;
}
return ArraySize(PointerSize::k64, cache_size);
}
inline size_t DexCacheArraysLayout::MethodTypesAlignment() const {
static_assert(alignof(mirror::MethodTypeDexCacheType) == 8,
"Expecting alignof(MethodTypeDexCacheType) == 8");
return alignof(mirror::MethodTypeDexCacheType);
}
inline size_t DexCacheArraysLayout::CallSitesSize(size_t num_elements) const {
return ArraySize(GcRootAsPointerSize<mirror::CallSite>(), num_elements);
}
inline size_t DexCacheArraysLayout::CallSitesAlignment() const {
return alignof(GcRoot<mirror::CallSite>);
}
inline size_t DexCacheArraysLayout::ElementOffset(PointerSize element_size, uint32_t idx) {
return static_cast<size_t>(element_size) * idx;
}
inline size_t DexCacheArraysLayout::ArraySize(PointerSize element_size, uint32_t num_elements) {
return static_cast<size_t>(element_size) * num_elements;
}
inline size_t DexCacheArraysLayout::PairArraySize(PointerSize element_size, uint32_t num_elements) {
return 2u * static_cast<size_t>(element_size) * num_elements;
}
} // namespace art
#endif // ART_RUNTIME_UTILS_DEX_CACHE_ARRAYS_LAYOUT_INL_H_
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