| /* |
| * 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. |
| */ |
| |
| #ifndef ART_RUNTIME_MIRROR_DEX_CACHE_H_ |
| #define ART_RUNTIME_MIRROR_DEX_CACHE_H_ |
| |
| #include "array.h" |
| #include "base/bit_utils.h" |
| #include "base/mutex.h" |
| #include "dex/dex_file_types.h" |
| #include "gc_root-inl.h" |
| #include "object.h" |
| #include "object_array.h" |
| |
| namespace art { |
| |
| class ArtField; |
| class ArtMethod; |
| struct DexCacheOffsets; |
| class DexFile; |
| class ImageWriter; |
| union JValue; |
| class LinearAlloc; |
| class Thread; |
| |
| namespace mirror { |
| |
| class CallSite; |
| class Class; |
| class MethodType; |
| class String; |
| |
| template <typename T> struct PACKED(8) DexCachePair { |
| GcRoot<T> object; |
| uint32_t index; |
| // The array is initially [ {0,0}, {0,0}, {0,0} ... ] |
| // We maintain the invariant that once a dex cache entry is populated, |
| // the pointer is always non-0 |
| // Any given entry would thus be: |
| // {non-0, non-0} OR {0,0} |
| // |
| // It's generally sufficiently enough then to check if the |
| // lookup index matches the stored index (for a >0 lookup index) |
| // because if it's true the pointer is also non-null. |
| // |
| // For the 0th entry which is a special case, the value is either |
| // {0,0} (initial state) or {non-0, 0} which indicates |
| // that a valid object is stored at that index for a dex section id of 0. |
| // |
| // As an optimization, we want to avoid branching on the object pointer since |
| // it's always non-null if the id branch succeeds (except for the 0th id). |
| // Set the initial state for the 0th entry to be {0,1} which is guaranteed to fail |
| // the lookup id == stored id branch. |
| DexCachePair(ObjPtr<T> object, uint32_t index) |
| : object(object), |
| index(index) {} |
| DexCachePair() : index(0) {} |
| DexCachePair(const DexCachePair<T>&) = default; |
| DexCachePair& operator=(const DexCachePair<T>&) = default; |
| |
| static void Initialize(std::atomic<DexCachePair<T>>* dex_cache) { |
| DexCachePair<T> first_elem; |
| first_elem.object = GcRoot<T>(nullptr); |
| first_elem.index = InvalidIndexForSlot(0); |
| dex_cache[0].store(first_elem, std::memory_order_relaxed); |
| } |
| |
| static uint32_t InvalidIndexForSlot(uint32_t slot) { |
| // Since the cache size is a power of two, 0 will always map to slot 0. |
| // Use 1 for slot 0 and 0 for all other slots. |
| return (slot == 0) ? 1u : 0u; |
| } |
| |
| T* GetObjectForIndex(uint32_t idx) REQUIRES_SHARED(Locks::mutator_lock_) { |
| if (idx != index) { |
| return nullptr; |
| } |
| DCHECK(!object.IsNull()); |
| return object.Read(); |
| } |
| }; |
| |
| template <typename T> struct PACKED(2 * __SIZEOF_POINTER__) NativeDexCachePair { |
| T* object; |
| size_t index; |
| // This is similar to DexCachePair except that we're storing a native pointer |
| // instead of a GC root. See DexCachePair for the details. |
| NativeDexCachePair(T* object, uint32_t index) |
| : object(object), |
| index(index) {} |
| NativeDexCachePair() : object(nullptr), index(0u) { } |
| NativeDexCachePair(const NativeDexCachePair<T>&) = default; |
| NativeDexCachePair& operator=(const NativeDexCachePair<T>&) = default; |
| |
| static void Initialize(std::atomic<NativeDexCachePair<T>>* dex_cache, PointerSize pointer_size); |
| |
| static uint32_t InvalidIndexForSlot(uint32_t slot) { |
| // Since the cache size is a power of two, 0 will always map to slot 0. |
| // Use 1 for slot 0 and 0 for all other slots. |
| return (slot == 0) ? 1u : 0u; |
| } |
| |
| T* GetObjectForIndex(uint32_t idx) REQUIRES_SHARED(Locks::mutator_lock_) { |
| if (idx != index) { |
| return nullptr; |
| } |
| DCHECK(object != nullptr); |
| return object; |
| } |
| }; |
| |
| using TypeDexCachePair = DexCachePair<Class>; |
| using TypeDexCacheType = std::atomic<TypeDexCachePair>; |
| |
| using StringDexCachePair = DexCachePair<String>; |
| using StringDexCacheType = std::atomic<StringDexCachePair>; |
| |
| using FieldDexCachePair = NativeDexCachePair<ArtField>; |
| using FieldDexCacheType = std::atomic<FieldDexCachePair>; |
| |
| using MethodDexCachePair = NativeDexCachePair<ArtMethod>; |
| using MethodDexCacheType = std::atomic<MethodDexCachePair>; |
| |
| using MethodTypeDexCachePair = DexCachePair<MethodType>; |
| using MethodTypeDexCacheType = std::atomic<MethodTypeDexCachePair>; |
| |
| // C++ mirror of java.lang.DexCache. |
| class MANAGED DexCache FINAL : public Object { |
| public: |
| // Size of java.lang.DexCache.class. |
| static uint32_t ClassSize(PointerSize pointer_size); |
| |
| // Size of type dex cache. Needs to be a power of 2 for entrypoint assumptions to hold. |
| static constexpr size_t kDexCacheTypeCacheSize = 1024; |
| static_assert(IsPowerOfTwo(kDexCacheTypeCacheSize), |
| "Type dex cache size is not a power of 2."); |
| |
| // Size of string dex cache. Needs to be a power of 2 for entrypoint assumptions to hold. |
| static constexpr size_t kDexCacheStringCacheSize = 1024; |
| static_assert(IsPowerOfTwo(kDexCacheStringCacheSize), |
| "String dex cache size is not a power of 2."); |
| |
| // Size of field dex cache. Needs to be a power of 2 for entrypoint assumptions to hold. |
| static constexpr size_t kDexCacheFieldCacheSize = 1024; |
| static_assert(IsPowerOfTwo(kDexCacheFieldCacheSize), |
| "Field dex cache size is not a power of 2."); |
| |
| // Size of method dex cache. Needs to be a power of 2 for entrypoint assumptions to hold. |
| static constexpr size_t kDexCacheMethodCacheSize = 1024; |
| static_assert(IsPowerOfTwo(kDexCacheMethodCacheSize), |
| "Method dex cache size is not a power of 2."); |
| |
| // Size of method type dex cache. Needs to be a power of 2 for entrypoint assumptions |
| // to hold. |
| static constexpr size_t kDexCacheMethodTypeCacheSize = 1024; |
| static_assert(IsPowerOfTwo(kDexCacheMethodTypeCacheSize), |
| "MethodType dex cache size is not a power of 2."); |
| |
| static constexpr size_t StaticTypeSize() { |
| return kDexCacheTypeCacheSize; |
| } |
| |
| static constexpr size_t StaticStringSize() { |
| return kDexCacheStringCacheSize; |
| } |
| |
| static constexpr size_t StaticArtFieldSize() { |
| return kDexCacheFieldCacheSize; |
| } |
| |
| static constexpr size_t StaticMethodSize() { |
| return kDexCacheMethodCacheSize; |
| } |
| |
| static constexpr size_t StaticMethodTypeSize() { |
| return kDexCacheMethodTypeCacheSize; |
| } |
| |
| // Size of an instance of java.lang.DexCache not including referenced values. |
| static constexpr uint32_t InstanceSize() { |
| return sizeof(DexCache); |
| } |
| |
| static void InitializeDexCache(Thread* self, |
| ObjPtr<mirror::DexCache> dex_cache, |
| ObjPtr<mirror::String> location, |
| const DexFile* dex_file, |
| LinearAlloc* linear_alloc, |
| PointerSize image_pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_) |
| REQUIRES(Locks::dex_lock_); |
| |
| template <ReadBarrierOption kReadBarrierOption = kWithReadBarrier, typename Visitor> |
| void FixupStrings(StringDexCacheType* dest, const Visitor& visitor) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template <ReadBarrierOption kReadBarrierOption = kWithReadBarrier, typename Visitor> |
| void FixupResolvedTypes(TypeDexCacheType* dest, const Visitor& visitor) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template <ReadBarrierOption kReadBarrierOption = kWithReadBarrier, typename Visitor> |
| void FixupResolvedMethodTypes(MethodTypeDexCacheType* dest, const Visitor& visitor) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template <ReadBarrierOption kReadBarrierOption = kWithReadBarrier, typename Visitor> |
| void FixupResolvedCallSites(GcRoot<mirror::CallSite>* dest, const Visitor& visitor) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| String* GetLocation() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetFieldObject<String>(OFFSET_OF_OBJECT_MEMBER(DexCache, location_)); |
| } |
| |
| static MemberOffset StringsOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(DexCache, strings_); |
| } |
| |
| static MemberOffset ResolvedTypesOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(DexCache, resolved_types_); |
| } |
| |
| static MemberOffset ResolvedFieldsOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(DexCache, resolved_fields_); |
| } |
| |
| static MemberOffset ResolvedMethodsOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(DexCache, resolved_methods_); |
| } |
| |
| static MemberOffset ResolvedMethodTypesOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(DexCache, resolved_method_types_); |
| } |
| |
| static MemberOffset ResolvedCallSitesOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(DexCache, resolved_call_sites_); |
| } |
| |
| static MemberOffset NumStringsOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(DexCache, num_strings_); |
| } |
| |
| static MemberOffset NumResolvedTypesOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(DexCache, num_resolved_types_); |
| } |
| |
| static MemberOffset NumResolvedFieldsOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(DexCache, num_resolved_fields_); |
| } |
| |
| static MemberOffset NumResolvedMethodsOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(DexCache, num_resolved_methods_); |
| } |
| |
| static MemberOffset NumResolvedMethodTypesOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(DexCache, num_resolved_method_types_); |
| } |
| |
| static MemberOffset NumResolvedCallSitesOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(DexCache, num_resolved_call_sites_); |
| } |
| |
| String* GetResolvedString(dex::StringIndex string_idx) ALWAYS_INLINE |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetResolvedString(dex::StringIndex string_idx, ObjPtr<mirror::String> resolved) ALWAYS_INLINE |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Clear a string for a string_idx, used to undo string intern transactions to make sure |
| // the string isn't kept live. |
| void ClearString(dex::StringIndex string_idx) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| Class* GetResolvedType(dex::TypeIndex type_idx) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetResolvedType(dex::TypeIndex type_idx, ObjPtr<Class> resolved) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void ClearResolvedType(dex::TypeIndex type_idx) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE ArtMethod* GetResolvedMethod(uint32_t method_idx, PointerSize ptr_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE void SetResolvedMethod(uint32_t method_idx, |
| ArtMethod* resolved, |
| PointerSize ptr_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| ALWAYS_INLINE void ClearResolvedMethod(uint32_t method_idx, PointerSize ptr_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Pointer sized variant, used for patching. |
| ALWAYS_INLINE ArtField* GetResolvedField(uint32_t idx, PointerSize ptr_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Pointer sized variant, used for patching. |
| ALWAYS_INLINE void SetResolvedField(uint32_t idx, ArtField* field, PointerSize ptr_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| ALWAYS_INLINE void ClearResolvedField(uint32_t idx, PointerSize ptr_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| MethodType* GetResolvedMethodType(dex::ProtoIndex proto_idx) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetResolvedMethodType(dex::ProtoIndex proto_idx, MethodType* resolved) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| CallSite* GetResolvedCallSite(uint32_t call_site_idx) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Attempts to bind |call_site_idx| to the call site |resolved|. The |
| // caller must use the return value in place of |resolved|. This is |
| // because multiple threads can invoke the bootstrap method each |
| // producing a call site, but the method handle invocation on the |
| // call site must be on a common agreed value. |
| CallSite* SetResolvedCallSite(uint32_t call_site_idx, CallSite* resolved) WARN_UNUSED |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| StringDexCacheType* GetStrings() ALWAYS_INLINE REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetFieldPtr64<StringDexCacheType*>(StringsOffset()); |
| } |
| |
| void SetStrings(StringDexCacheType* strings) ALWAYS_INLINE REQUIRES_SHARED(Locks::mutator_lock_) { |
| SetFieldPtr<false>(StringsOffset(), strings); |
| } |
| |
| TypeDexCacheType* GetResolvedTypes() ALWAYS_INLINE REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetFieldPtr<TypeDexCacheType*>(ResolvedTypesOffset()); |
| } |
| |
| void SetResolvedTypes(TypeDexCacheType* resolved_types) |
| ALWAYS_INLINE |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| SetFieldPtr<false>(ResolvedTypesOffset(), resolved_types); |
| } |
| |
| MethodDexCacheType* GetResolvedMethods() ALWAYS_INLINE REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetFieldPtr<MethodDexCacheType*>(ResolvedMethodsOffset()); |
| } |
| |
| void SetResolvedMethods(MethodDexCacheType* resolved_methods) |
| ALWAYS_INLINE |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| SetFieldPtr<false>(ResolvedMethodsOffset(), resolved_methods); |
| } |
| |
| FieldDexCacheType* GetResolvedFields() ALWAYS_INLINE REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetFieldPtr<FieldDexCacheType*>(ResolvedFieldsOffset()); |
| } |
| |
| void SetResolvedFields(FieldDexCacheType* resolved_fields) |
| ALWAYS_INLINE |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| SetFieldPtr<false>(ResolvedFieldsOffset(), resolved_fields); |
| } |
| |
| MethodTypeDexCacheType* GetResolvedMethodTypes() |
| ALWAYS_INLINE REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetFieldPtr64<MethodTypeDexCacheType*>(ResolvedMethodTypesOffset()); |
| } |
| |
| void SetResolvedMethodTypes(MethodTypeDexCacheType* resolved_method_types) |
| ALWAYS_INLINE |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| SetFieldPtr<false>(ResolvedMethodTypesOffset(), resolved_method_types); |
| } |
| |
| GcRoot<CallSite>* GetResolvedCallSites() |
| ALWAYS_INLINE |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetFieldPtr<GcRoot<CallSite>*>(ResolvedCallSitesOffset()); |
| } |
| |
| void SetResolvedCallSites(GcRoot<CallSite>* resolved_call_sites) |
| ALWAYS_INLINE |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| SetFieldPtr<false>(ResolvedCallSitesOffset(), resolved_call_sites); |
| } |
| |
| size_t NumStrings() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetField32(NumStringsOffset()); |
| } |
| |
| size_t NumResolvedTypes() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetField32(NumResolvedTypesOffset()); |
| } |
| |
| size_t NumResolvedMethods() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetField32(NumResolvedMethodsOffset()); |
| } |
| |
| size_t NumResolvedFields() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetField32(NumResolvedFieldsOffset()); |
| } |
| |
| size_t NumResolvedMethodTypes() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetField32(NumResolvedMethodTypesOffset()); |
| } |
| |
| size_t NumResolvedCallSites() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetField32(NumResolvedCallSitesOffset()); |
| } |
| |
| const DexFile* GetDexFile() ALWAYS_INLINE REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetFieldPtr<const DexFile*>(OFFSET_OF_OBJECT_MEMBER(DexCache, dex_file_)); |
| } |
| |
| void SetDexFile(const DexFile* dex_file) REQUIRES_SHARED(Locks::mutator_lock_) { |
| SetFieldPtr<false>(OFFSET_OF_OBJECT_MEMBER(DexCache, dex_file_), dex_file); |
| } |
| |
| void SetLocation(ObjPtr<String> location) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template <typename T> |
| static NativeDexCachePair<T> GetNativePairPtrSize(std::atomic<NativeDexCachePair<T>>* pair_array, |
| size_t idx, |
| PointerSize ptr_size); |
| |
| template <typename T> |
| static void SetNativePairPtrSize(std::atomic<NativeDexCachePair<T>>* pair_array, |
| size_t idx, |
| NativeDexCachePair<T> pair, |
| PointerSize ptr_size); |
| |
| uint32_t StringSlotIndex(dex::StringIndex string_idx) REQUIRES_SHARED(Locks::mutator_lock_); |
| uint32_t TypeSlotIndex(dex::TypeIndex type_idx) REQUIRES_SHARED(Locks::mutator_lock_); |
| uint32_t FieldSlotIndex(uint32_t field_idx) REQUIRES_SHARED(Locks::mutator_lock_); |
| uint32_t MethodSlotIndex(uint32_t method_idx) REQUIRES_SHARED(Locks::mutator_lock_); |
| uint32_t MethodTypeSlotIndex(dex::ProtoIndex proto_idx) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| private: |
| void Init(const DexFile* dex_file, |
| ObjPtr<String> location, |
| StringDexCacheType* strings, |
| uint32_t num_strings, |
| TypeDexCacheType* resolved_types, |
| uint32_t num_resolved_types, |
| MethodDexCacheType* resolved_methods, |
| uint32_t num_resolved_methods, |
| FieldDexCacheType* resolved_fields, |
| uint32_t num_resolved_fields, |
| MethodTypeDexCacheType* resolved_method_types, |
| uint32_t num_resolved_method_types, |
| GcRoot<CallSite>* resolved_call_sites, |
| uint32_t num_resolved_call_sites) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // std::pair<> is not trivially copyable and as such it is unsuitable for atomic operations, |
| // so we use a custom pair class for loading and storing the NativeDexCachePair<>. |
| template <typename IntType> |
| struct PACKED(2 * sizeof(IntType)) ConversionPair { |
| ConversionPair(IntType f, IntType s) : first(f), second(s) { } |
| ConversionPair(const ConversionPair&) = default; |
| ConversionPair& operator=(const ConversionPair&) = default; |
| IntType first; |
| IntType second; |
| }; |
| using ConversionPair32 = ConversionPair<uint32_t>; |
| using ConversionPair64 = ConversionPair<uint64_t>; |
| |
| // Visit instance fields of the dex cache as well as its associated arrays. |
| template <bool kVisitNativeRoots, |
| VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier, |
| typename Visitor> |
| void VisitReferences(ObjPtr<Class> klass, const Visitor& visitor) |
| REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(Locks::heap_bitmap_lock_); |
| |
| // Due to lack of 16-byte atomics support, we use hand-crafted routines. |
| #if defined(__aarch64__) || defined(__mips__) |
| // 16-byte atomics are supported on aarch64, mips and mips64. |
| ALWAYS_INLINE static ConversionPair64 AtomicLoadRelaxed16B( |
| std::atomic<ConversionPair64>* target) { |
| return target->load(std::memory_order_relaxed); |
| } |
| |
| ALWAYS_INLINE static void AtomicStoreRelease16B( |
| std::atomic<ConversionPair64>* target, ConversionPair64 value) { |
| target->store(value, std::memory_order_release); |
| } |
| #elif defined(__x86_64__) |
| ALWAYS_INLINE static ConversionPair64 AtomicLoadRelaxed16B( |
| std::atomic<ConversionPair64>* target) { |
| uint64_t first, second; |
| __asm__ __volatile__( |
| "lock cmpxchg16b (%2)" |
| : "=&a"(first), "=&d"(second) |
| : "r"(target), "a"(0), "d"(0), "b"(0), "c"(0) |
| : "cc"); |
| return ConversionPair64(first, second); |
| } |
| |
| ALWAYS_INLINE static void AtomicStoreRelease16B( |
| std::atomic<ConversionPair64>* target, ConversionPair64 value) { |
| uint64_t first, second; |
| __asm__ __volatile__ ( |
| "movq (%2), %%rax\n\t" |
| "movq 8(%2), %%rdx\n\t" |
| "1:\n\t" |
| "lock cmpxchg16b (%2)\n\t" |
| "jnz 1b" |
| : "=&a"(first), "=&d"(second) |
| : "r"(target), "b"(value.first), "c"(value.second) |
| : "cc"); |
| } |
| #else |
| static ConversionPair64 AtomicLoadRelaxed16B(std::atomic<ConversionPair64>* target); |
| static void AtomicStoreRelease16B(std::atomic<ConversionPair64>* target, ConversionPair64 value); |
| #endif |
| |
| HeapReference<String> location_; |
| // Number of elements in the call_sites_ array. Note that this appears here |
| // because of our packing logic for 32 bit fields. |
| uint32_t num_resolved_call_sites_; |
| |
| uint64_t dex_file_; // const DexFile* |
| uint64_t resolved_call_sites_; // GcRoot<CallSite>* array with num_resolved_call_sites_ |
| // elements. |
| uint64_t resolved_fields_; // std::atomic<FieldDexCachePair>*, array with |
| // num_resolved_fields_ elements. |
| uint64_t resolved_method_types_; // std::atomic<MethodTypeDexCachePair>* array with |
| // num_resolved_method_types_ elements. |
| uint64_t resolved_methods_; // ArtMethod*, array with num_resolved_methods_ elements. |
| uint64_t resolved_types_; // TypeDexCacheType*, array with num_resolved_types_ elements. |
| uint64_t strings_; // std::atomic<StringDexCachePair>*, array with num_strings_ |
| // elements. |
| |
| uint32_t num_resolved_fields_; // Number of elements in the resolved_fields_ array. |
| uint32_t num_resolved_method_types_; // Number of elements in the resolved_method_types_ array. |
| uint32_t num_resolved_methods_; // Number of elements in the resolved_methods_ array. |
| uint32_t num_resolved_types_; // Number of elements in the resolved_types_ array. |
| uint32_t num_strings_; // Number of elements in the strings_ array. |
| |
| friend struct art::DexCacheOffsets; // for verifying offset information |
| friend class Object; // For VisitReferences |
| DISALLOW_IMPLICIT_CONSTRUCTORS(DexCache); |
| }; |
| |
| } // namespace mirror |
| } // namespace art |
| |
| #endif // ART_RUNTIME_MIRROR_DEX_CACHE_H_ |