| /* |
| * 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_CLASS_H_ |
| #define ART_RUNTIME_MIRROR_CLASS_H_ |
| |
| #include "base/bit_utils.h" |
| #include "base/casts.h" |
| #include "base/enums.h" |
| #include "base/iteration_range.h" |
| #include "base/stride_iterator.h" |
| #include "base/utils.h" |
| #include "class_flags.h" |
| #include "class_status.h" |
| #include "dex/dex_file.h" |
| #include "dex/dex_file_types.h" |
| #include "dex/modifiers.h" |
| #include "dex/primitive.h" |
| #include "gc/allocator_type.h" |
| #include "gc_root.h" |
| #include "imtable.h" |
| #include "object.h" |
| #include "object_array.h" |
| #include "read_barrier_option.h" |
| #include "thread.h" |
| |
| namespace art { |
| |
| class ArtField; |
| class ArtMethod; |
| struct ClassOffsets; |
| template<class T> class Handle; |
| enum InvokeType : uint32_t; |
| template<typename T> class LengthPrefixedArray; |
| template<typename T> class ArraySlice; |
| class Signature; |
| class StringPiece; |
| template<size_t kNumReferences> class PACKED(4) StackHandleScope; |
| |
| namespace mirror { |
| |
| class ClassExt; |
| class ClassLoader; |
| class Constructor; |
| class DexCache; |
| class IfTable; |
| class Method; |
| template <typename T> struct PACKED(8) DexCachePair; |
| |
| using StringDexCachePair = DexCachePair<String>; |
| using StringDexCacheType = std::atomic<StringDexCachePair>; |
| |
| // C++ mirror of java.lang.Class |
| class MANAGED Class FINAL : public Object { |
| public: |
| // A magic value for reference_instance_offsets_. Ignore the bits and walk the super chain when |
| // this is the value. |
| // [This is an unlikely "natural" value, since it would be 30 non-ref instance fields followed by |
| // 2 ref instance fields.] |
| static constexpr uint32_t kClassWalkSuper = 0xC0000000; |
| |
| // Shift primitive type by kPrimitiveTypeSizeShiftShift to get the component type size shift |
| // Used for computing array size as follows: |
| // array_bytes = header_size + (elements << (primitive_type >> kPrimitiveTypeSizeShiftShift)) |
| static constexpr uint32_t kPrimitiveTypeSizeShiftShift = 16; |
| static constexpr uint32_t kPrimitiveTypeMask = (1u << kPrimitiveTypeSizeShiftShift) - 1; |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| ClassStatus GetStatus() REQUIRES_SHARED(Locks::mutator_lock_) { |
| // Avoid including "subtype_check_bits_and_status.h" to get the field. |
| // The ClassStatus is always in the 4 most-significant bits of status_. |
| return enum_cast<ClassStatus>( |
| static_cast<uint32_t>(GetField32Volatile<kVerifyFlags>(StatusOffset())) >> (32 - 4)); |
| } |
| |
| // This is static because 'this' may be moved by GC. |
| static void SetStatus(Handle<Class> h_this, ClassStatus new_status, Thread* self) |
| REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_); |
| |
| static MemberOffset StatusOffset() { |
| return MemberOffset(OFFSET_OF_OBJECT_MEMBER(Class, status_)); |
| } |
| |
| // Returns true if the class has been retired. |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsRetired() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetStatus<kVerifyFlags>() == ClassStatus::kRetired; |
| } |
| |
| // Returns true if the class has failed to link. |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsErroneousUnresolved() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetStatus<kVerifyFlags>() == ClassStatus::kErrorUnresolved; |
| } |
| |
| // Returns true if the class has failed to initialize. |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsErroneousResolved() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetStatus<kVerifyFlags>() == ClassStatus::kErrorResolved; |
| } |
| |
| // Returns true if the class status indicets that the class has failed to link or initialize. |
| static bool IsErroneous(ClassStatus status) { |
| return status == ClassStatus::kErrorUnresolved || status == ClassStatus::kErrorResolved; |
| } |
| |
| // Returns true if the class has failed to link or initialize. |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsErroneous() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return IsErroneous(GetStatus<kVerifyFlags>()); |
| } |
| |
| // Returns true if the class has been loaded. |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsIdxLoaded() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetStatus<kVerifyFlags>() >= ClassStatus::kIdx; |
| } |
| |
| // Returns true if the class has been loaded. |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsLoaded() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetStatus<kVerifyFlags>() >= ClassStatus::kLoaded; |
| } |
| |
| // Returns true if the class has been linked. |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsResolved() REQUIRES_SHARED(Locks::mutator_lock_) { |
| ClassStatus status = GetStatus<kVerifyFlags>(); |
| return status >= ClassStatus::kResolved || status == ClassStatus::kErrorResolved; |
| } |
| |
| // Returns true if the class should be verified at runtime. |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool ShouldVerifyAtRuntime() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetStatus<kVerifyFlags>() == ClassStatus::kRetryVerificationAtRuntime; |
| } |
| |
| // Returns true if the class has been verified. |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsVerified() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetStatus<kVerifyFlags>() >= ClassStatus::kVerified; |
| } |
| |
| // Returns true if the class is initializing. |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsInitializing() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetStatus<kVerifyFlags>() >= ClassStatus::kInitializing; |
| } |
| |
| // Returns true if the class is initialized. |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsInitialized() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetStatus<kVerifyFlags>() == ClassStatus::kInitialized; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| ALWAYS_INLINE uint32_t GetAccessFlags() REQUIRES_SHARED(Locks::mutator_lock_) { |
| if (kIsDebugBuild) { |
| GetAccessFlagsDCheck<kVerifyFlags>(); |
| } |
| return GetField32<kVerifyFlags>(AccessFlagsOffset()); |
| } |
| |
| static MemberOffset AccessFlagsOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(Class, access_flags_); |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| ALWAYS_INLINE uint32_t GetClassFlags() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetField32<kVerifyFlags>(OFFSET_OF_OBJECT_MEMBER(Class, class_flags_)); |
| } |
| void SetClassFlags(uint32_t new_flags) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetAccessFlags(uint32_t new_access_flags) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Returns true if the class is an enum. |
| ALWAYS_INLINE bool IsEnum() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (GetAccessFlags() & kAccEnum) != 0; |
| } |
| |
| // Returns true if the class is an interface. |
| ALWAYS_INLINE bool IsInterface() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (GetAccessFlags() & kAccInterface) != 0; |
| } |
| |
| // Returns true if the class is declared public. |
| ALWAYS_INLINE bool IsPublic() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (GetAccessFlags() & kAccPublic) != 0; |
| } |
| |
| // Returns true if the class is declared final. |
| ALWAYS_INLINE bool IsFinal() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (GetAccessFlags() & kAccFinal) != 0; |
| } |
| |
| ALWAYS_INLINE bool IsFinalizable() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (GetAccessFlags() & kAccClassIsFinalizable) != 0; |
| } |
| |
| ALWAYS_INLINE bool ShouldSkipHiddenApiChecks() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (GetAccessFlags() & kAccSkipHiddenApiChecks) != 0; |
| } |
| |
| ALWAYS_INLINE void SetSkipHiddenApiChecks() REQUIRES_SHARED(Locks::mutator_lock_) { |
| uint32_t flags = GetAccessFlags(); |
| SetAccessFlags(flags | kAccSkipHiddenApiChecks); |
| } |
| |
| ALWAYS_INLINE void SetRecursivelyInitialized() REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK_EQ(GetLockOwnerThreadId(), Thread::Current()->GetThreadId()); |
| uint32_t flags = GetField32(OFFSET_OF_OBJECT_MEMBER(Class, access_flags_)); |
| SetAccessFlags(flags | kAccRecursivelyInitialized); |
| } |
| |
| ALWAYS_INLINE void SetHasDefaultMethods() REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK_EQ(GetLockOwnerThreadId(), Thread::Current()->GetThreadId()); |
| uint32_t flags = GetField32(OFFSET_OF_OBJECT_MEMBER(Class, access_flags_)); |
| SetAccessFlags(flags | kAccHasDefaultMethod); |
| } |
| |
| ALWAYS_INLINE void SetFinalizable() REQUIRES_SHARED(Locks::mutator_lock_) { |
| uint32_t flags = GetField32(OFFSET_OF_OBJECT_MEMBER(Class, access_flags_)); |
| SetAccessFlags(flags | kAccClassIsFinalizable); |
| } |
| |
| ALWAYS_INLINE bool IsStringClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (GetClassFlags() & kClassFlagString) != 0; |
| } |
| |
| ALWAYS_INLINE void SetStringClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| SetClassFlags(kClassFlagString | kClassFlagNoReferenceFields); |
| } |
| |
| ALWAYS_INLINE bool IsClassLoaderClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetClassFlags() == kClassFlagClassLoader; |
| } |
| |
| ALWAYS_INLINE void SetClassLoaderClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| SetClassFlags(kClassFlagClassLoader); |
| } |
| |
| ALWAYS_INLINE bool IsDexCacheClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (GetClassFlags() & kClassFlagDexCache) != 0; |
| } |
| |
| ALWAYS_INLINE void SetDexCacheClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| SetClassFlags(GetClassFlags() | kClassFlagDexCache); |
| } |
| |
| // Returns true if the class is abstract. |
| ALWAYS_INLINE bool IsAbstract() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (GetAccessFlags() & kAccAbstract) != 0; |
| } |
| |
| // Returns true if the class is an annotation. |
| ALWAYS_INLINE bool IsAnnotation() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (GetAccessFlags() & kAccAnnotation) != 0; |
| } |
| |
| // Returns true if the class is synthetic. |
| ALWAYS_INLINE bool IsSynthetic() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (GetAccessFlags() & kAccSynthetic) != 0; |
| } |
| |
| // Return whether the class had run the verifier at least once. |
| // This does not necessarily mean that access checks are avoidable, |
| // since the class methods might still need to be run with access checks. |
| bool WasVerificationAttempted() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (GetAccessFlags() & kAccVerificationAttempted) != 0; |
| } |
| |
| // Mark the class as having gone through a verification attempt. |
| // Mutually exclusive from whether or not each method is allowed to skip access checks. |
| void SetVerificationAttempted() REQUIRES_SHARED(Locks::mutator_lock_) { |
| uint32_t flags = GetField32(OFFSET_OF_OBJECT_MEMBER(Class, access_flags_)); |
| if ((flags & kAccVerificationAttempted) == 0) { |
| SetAccessFlags(flags | kAccVerificationAttempted); |
| } |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsTypeOfReferenceClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (GetClassFlags<kVerifyFlags>() & kClassFlagReference) != 0; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsWeakReferenceClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetClassFlags<kVerifyFlags>() == kClassFlagWeakReference; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsSoftReferenceClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetClassFlags<kVerifyFlags>() == kClassFlagSoftReference; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsFinalizerReferenceClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetClassFlags<kVerifyFlags>() == kClassFlagFinalizerReference; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsPhantomReferenceClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetClassFlags<kVerifyFlags>() == kClassFlagPhantomReference; |
| } |
| |
| // Can references of this type be assigned to by things of another type? For non-array types |
| // this is a matter of whether sub-classes may exist - which they can't if the type is final. |
| // For array classes, where all the classes are final due to there being no sub-classes, an |
| // Object[] may be assigned to by a String[] but a String[] may not be assigned to by other |
| // types as the component is final. |
| bool CannotBeAssignedFromOtherTypes() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Returns true if this class is the placeholder and should retire and |
| // be replaced with a class with the right size for embedded imt/vtable. |
| bool IsTemp() REQUIRES_SHARED(Locks::mutator_lock_) { |
| ClassStatus s = GetStatus(); |
| return s < ClassStatus::kResolving && |
| s != ClassStatus::kErrorResolved && |
| ShouldHaveEmbeddedVTable(); |
| } |
| |
| String* GetName() REQUIRES_SHARED(Locks::mutator_lock_); // Returns the cached name. |
| void SetName(ObjPtr<String> name) REQUIRES_SHARED(Locks::mutator_lock_); // Sets the cached name. |
| // Computes the name, then sets the cached value. |
| static String* ComputeName(Handle<Class> h_this) REQUIRES_SHARED(Locks::mutator_lock_) |
| REQUIRES(!Roles::uninterruptible_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsProxyClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| // Read access flags without using getter as whether something is a proxy can be check in |
| // any loaded state |
| // TODO: switch to a check if the super class is java.lang.reflect.Proxy? |
| uint32_t access_flags = GetField32<kVerifyFlags>(OFFSET_OF_OBJECT_MEMBER(Class, access_flags_)); |
| return (access_flags & kAccClassIsProxy) != 0; |
| } |
| |
| static MemberOffset PrimitiveTypeOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(Class, primitive_type_); |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| Primitive::Type GetPrimitiveType() ALWAYS_INLINE REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetPrimitiveType(Primitive::Type new_type) REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK_EQ(sizeof(Primitive::Type), sizeof(int32_t)); |
| uint32_t v32 = static_cast<uint32_t>(new_type); |
| DCHECK_EQ(v32 & kPrimitiveTypeMask, v32) << "upper 16 bits aren't zero"; |
| // Store the component size shift in the upper 16 bits. |
| v32 |= Primitive::ComponentSizeShift(new_type) << kPrimitiveTypeSizeShiftShift; |
| SetField32Transaction(OFFSET_OF_OBJECT_MEMBER(Class, primitive_type_), v32); |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| size_t GetPrimitiveTypeSizeShift() ALWAYS_INLINE REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Returns true if the class is a primitive type. |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsPrimitive() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetPrimitiveType<kVerifyFlags>() != Primitive::kPrimNot; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsPrimitiveBoolean() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetPrimitiveType<kVerifyFlags>() == Primitive::kPrimBoolean; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsPrimitiveByte() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetPrimitiveType<kVerifyFlags>() == Primitive::kPrimByte; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsPrimitiveChar() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetPrimitiveType<kVerifyFlags>() == Primitive::kPrimChar; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsPrimitiveShort() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetPrimitiveType<kVerifyFlags>() == Primitive::kPrimShort; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsPrimitiveInt() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetPrimitiveType() == Primitive::kPrimInt; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsPrimitiveLong() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetPrimitiveType<kVerifyFlags>() == Primitive::kPrimLong; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsPrimitiveFloat() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetPrimitiveType<kVerifyFlags>() == Primitive::kPrimFloat; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsPrimitiveDouble() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetPrimitiveType<kVerifyFlags>() == Primitive::kPrimDouble; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsPrimitiveVoid() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetPrimitiveType<kVerifyFlags>() == Primitive::kPrimVoid; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsPrimitiveArray() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return IsArrayClass<kVerifyFlags>() && |
| GetComponentType<static_cast<VerifyObjectFlags>(kVerifyFlags & ~kVerifyThis)>()-> |
| IsPrimitive(); |
| } |
| |
| // Depth of class from java.lang.Object |
| uint32_t Depth() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| bool IsArrayClass() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| bool IsClassClass() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| bool IsThrowableClass() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| bool IsReferenceClass() const REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| static MemberOffset ComponentTypeOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(Class, component_type_); |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| Class* GetComponentType() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetComponentType(ObjPtr<Class> new_component_type) REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK(GetComponentType() == nullptr); |
| DCHECK(new_component_type != nullptr); |
| // Component type is invariant: use non-transactional mode without check. |
| SetFieldObject<false, false>(ComponentTypeOffset(), new_component_type); |
| } |
| |
| template<ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| size_t GetComponentSize() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return 1U << GetComponentSizeShift<kReadBarrierOption>(); |
| } |
| |
| template<ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| size_t GetComponentSizeShift() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetComponentType<kDefaultVerifyFlags, kReadBarrierOption>()->GetPrimitiveTypeSizeShift(); |
| } |
| |
| bool IsObjectClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return !IsPrimitive() && GetSuperClass() == nullptr; |
| } |
| |
| bool IsInstantiableNonArray() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return !IsPrimitive() && !IsInterface() && !IsAbstract() && !IsArrayClass(); |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| bool IsInstantiable() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (!IsPrimitive() && !IsInterface() && !IsAbstract()) || |
| (IsAbstract() && IsArrayClass<kVerifyFlags, kReadBarrierOption>()); |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| ALWAYS_INLINE bool IsObjectArrayClass() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsIntArrayClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| constexpr auto kNewFlags = static_cast<VerifyObjectFlags>(kVerifyFlags & ~kVerifyThis); |
| auto* component_type = GetComponentType<kVerifyFlags>(); |
| return component_type != nullptr && component_type->template IsPrimitiveInt<kNewFlags>(); |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| bool IsLongArrayClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| constexpr auto kNewFlags = static_cast<VerifyObjectFlags>(kVerifyFlags & ~kVerifyThis); |
| auto* component_type = GetComponentType<kVerifyFlags>(); |
| return component_type != nullptr && component_type->template IsPrimitiveLong<kNewFlags>(); |
| } |
| |
| // Creates a raw object instance but does not invoke the default constructor. |
| template<bool kIsInstrumented, bool kCheckAddFinalizer = true> |
| ALWAYS_INLINE ObjPtr<Object> Alloc(Thread* self, gc::AllocatorType allocator_type) |
| REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_); |
| |
| ObjPtr<Object> AllocObject(Thread* self) |
| REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_); |
| ObjPtr<Object> AllocNonMovableObject(Thread* self) |
| REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| ALWAYS_INLINE bool IsVariableSize() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| uint32_t SizeOf() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetField32<kVerifyFlags>(OFFSET_OF_OBJECT_MEMBER(Class, class_size_)); |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| uint32_t GetClassSize() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetField32<kVerifyFlags>(OFFSET_OF_OBJECT_MEMBER(Class, class_size_)); |
| } |
| |
| void SetClassSize(uint32_t new_class_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Compute how many bytes would be used a class with the given elements. |
| static uint32_t ComputeClassSize(bool has_embedded_vtable, |
| uint32_t num_vtable_entries, |
| uint32_t num_8bit_static_fields, |
| uint32_t num_16bit_static_fields, |
| uint32_t num_32bit_static_fields, |
| uint32_t num_64bit_static_fields, |
| uint32_t num_ref_static_fields, |
| PointerSize pointer_size); |
| |
| // The size of java.lang.Class.class. |
| static uint32_t ClassClassSize(PointerSize pointer_size) { |
| // The number of vtable entries in java.lang.Class. |
| uint32_t vtable_entries = Object::kVTableLength + 67; |
| return ComputeClassSize(true, vtable_entries, 0, 0, 4, 1, 0, pointer_size); |
| } |
| |
| // The size of a java.lang.Class representing a primitive such as int.class. |
| static uint32_t PrimitiveClassSize(PointerSize pointer_size) { |
| return ComputeClassSize(false, 0, 0, 0, 0, 0, 0, pointer_size); |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| uint32_t GetObjectSize() REQUIRES_SHARED(Locks::mutator_lock_); |
| static MemberOffset ObjectSizeOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(Class, object_size_); |
| } |
| static MemberOffset ObjectSizeAllocFastPathOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(Class, object_size_alloc_fast_path_); |
| } |
| |
| ALWAYS_INLINE void SetObjectSize(uint32_t new_object_size) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetObjectSizeAllocFastPath(uint32_t new_object_size) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| uint32_t GetObjectSizeAllocFastPath() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetObjectSizeWithoutChecks(uint32_t new_object_size) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| // Not called within a transaction. |
| return SetField32<false, false, kVerifyNone>( |
| OFFSET_OF_OBJECT_MEMBER(Class, object_size_), new_object_size); |
| } |
| |
| // Returns true if this class is in the same packages as that class. |
| bool IsInSamePackage(ObjPtr<Class> that) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| static bool IsInSamePackage(const StringPiece& descriptor1, const StringPiece& descriptor2); |
| |
| // Returns true if this class can access that class. |
| bool CanAccess(ObjPtr<Class> that) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Can this class access a member in the provided class with the provided member access flags? |
| // Note that access to the class isn't checked in case the declaring class is protected and the |
| // method has been exposed by a public sub-class |
| bool CanAccessMember(ObjPtr<Class> access_to, uint32_t member_flags) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Can this class access a resolved field? |
| // Note that access to field's class is checked and this may require looking up the class |
| // referenced by the FieldId in the DexFile in case the declaring class is inaccessible. |
| bool CanAccessResolvedField(ObjPtr<Class> access_to, |
| ArtField* field, |
| ObjPtr<DexCache> dex_cache, |
| uint32_t field_idx) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| bool CheckResolvedFieldAccess(ObjPtr<Class> access_to, |
| ArtField* field, |
| ObjPtr<DexCache> dex_cache, |
| uint32_t field_idx) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Can this class access a resolved method? |
| // Note that access to methods's class is checked and this may require looking up the class |
| // referenced by the MethodId in the DexFile in case the declaring class is inaccessible. |
| bool CanAccessResolvedMethod(ObjPtr<Class> access_to, |
| ArtMethod* resolved_method, |
| ObjPtr<DexCache> dex_cache, |
| uint32_t method_idx) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| bool CheckResolvedMethodAccess(ObjPtr<Class> access_to, |
| ArtMethod* resolved_method, |
| ObjPtr<DexCache> dex_cache, |
| uint32_t method_idx, |
| InvokeType throw_invoke_type) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| bool IsSubClass(ObjPtr<Class> klass) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Can src be assigned to this class? For example, String can be assigned to Object (by an |
| // upcast), however, an Object cannot be assigned to a String as a potentially exception throwing |
| // downcast would be necessary. Similarly for interfaces, a class that implements (or an interface |
| // that extends) another can be assigned to its parent, but not vice-versa. All Classes may assign |
| // to themselves. Classes for primitive types may not assign to each other. |
| ALWAYS_INLINE bool IsAssignableFrom(ObjPtr<Class> src) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| ALWAYS_INLINE Class* GetSuperClass() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Get first common super class. It will never return null. |
| // `This` and `klass` must be classes. |
| ObjPtr<Class> GetCommonSuperClass(Handle<Class> klass) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetSuperClass(ObjPtr<Class> new_super_class) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| bool HasSuperClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetSuperClass() != nullptr; |
| } |
| |
| static MemberOffset SuperClassOffset() { |
| return MemberOffset(OFFSETOF_MEMBER(Class, super_class_)); |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| ClassLoader* GetClassLoader() ALWAYS_INLINE REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetClassLoader(ObjPtr<ClassLoader> new_cl) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| static MemberOffset DexCacheOffset() { |
| return MemberOffset(OFFSETOF_MEMBER(Class, dex_cache_)); |
| } |
| |
| static MemberOffset IfTableOffset() { |
| return MemberOffset(OFFSETOF_MEMBER(Class, iftable_)); |
| } |
| |
| enum { |
| kDumpClassFullDetail = 1, |
| kDumpClassClassLoader = (1 << 1), |
| kDumpClassInitialized = (1 << 2), |
| }; |
| |
| void DumpClass(std::ostream& os, int flags) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| DexCache* GetDexCache() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Also updates the dex_cache_strings_ variable from new_dex_cache. |
| void SetDexCache(ObjPtr<DexCache> new_dex_cache) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetDirectMethods(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE LengthPrefixedArray<ArtMethod>* GetMethodsPtr() |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| static MemberOffset MethodsOffset() { |
| return MemberOffset(OFFSETOF_MEMBER(Class, methods_)); |
| } |
| |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetMethods(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetMethodsPtr(LengthPrefixedArray<ArtMethod>* new_methods, |
| uint32_t num_direct, |
| uint32_t num_virtual) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| // Used by image writer. |
| void SetMethodsPtrUnchecked(LengthPrefixedArray<ArtMethod>* new_methods, |
| uint32_t num_direct, |
| uint32_t num_virtual) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetDirectMethodsSlice(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE ArtMethod* GetDirectMethod(size_t i, PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Use only when we are allocating populating the method arrays. |
| ALWAYS_INLINE ArtMethod* GetDirectMethodUnchecked(size_t i, PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| ALWAYS_INLINE ArtMethod* GetVirtualMethodUnchecked(size_t i, PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Returns the number of static, private, and constructor methods. |
| ALWAYS_INLINE uint32_t NumDirectMethods() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetMethodsSlice(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetDeclaredMethodsSlice(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetDeclaredMethods( |
| PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template <PointerSize kPointerSize, bool kTransactionActive> |
| static ObjPtr<Method> GetDeclaredMethodInternal(Thread* self, |
| ObjPtr<Class> klass, |
| ObjPtr<String> name, |
| ObjPtr<ObjectArray<Class>> args) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template <PointerSize kPointerSize, bool kTransactionActive> |
| static ObjPtr<Constructor> GetDeclaredConstructorInternal(Thread* self, |
| ObjPtr<Class> klass, |
| ObjPtr<ObjectArray<Class>> args) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetDeclaredVirtualMethodsSlice(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetDeclaredVirtualMethods( |
| PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetCopiedMethodsSlice(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetCopiedMethods(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetVirtualMethodsSlice(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetVirtualMethods( |
| PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Returns the number of non-inherited virtual methods (sum of declared and copied methods). |
| ALWAYS_INLINE uint32_t NumVirtualMethods() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Returns the number of copied virtual methods. |
| ALWAYS_INLINE uint32_t NumCopiedVirtualMethods() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Returns the number of declared virtual methods. |
| ALWAYS_INLINE uint32_t NumDeclaredVirtualMethods() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE uint32_t NumMethods() REQUIRES_SHARED(Locks::mutator_lock_); |
| static ALWAYS_INLINE uint32_t NumMethods(LengthPrefixedArray<ArtMethod>* methods) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| ArtMethod* GetVirtualMethod(size_t i, PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ArtMethod* GetVirtualMethodDuringLinking(size_t i, PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| ALWAYS_INLINE PointerArray* GetVTable() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE PointerArray* GetVTableDuringLinking() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetVTable(PointerArray* new_vtable) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| static MemberOffset VTableOffset() { |
| return OFFSET_OF_OBJECT_MEMBER(Class, vtable_); |
| } |
| |
| static MemberOffset EmbeddedVTableLengthOffset() { |
| return MemberOffset(sizeof(Class)); |
| } |
| |
| static MemberOffset ImtPtrOffset(PointerSize pointer_size) { |
| return MemberOffset( |
| RoundUp(EmbeddedVTableLengthOffset().Uint32Value() + sizeof(uint32_t), |
| static_cast<size_t>(pointer_size))); |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| bool ShouldHaveImt() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return ShouldHaveEmbeddedVTable<kVerifyFlags, kReadBarrierOption>(); |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| bool ShouldHaveEmbeddedVTable() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return IsInstantiable<kVerifyFlags, kReadBarrierOption>(); |
| } |
| |
| bool HasVTable() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| static MemberOffset EmbeddedVTableEntryOffset(uint32_t i, PointerSize pointer_size); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| int32_t GetVTableLength() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| ArtMethod* GetVTableEntry(uint32_t i, PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| int32_t GetEmbeddedVTableLength() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetEmbeddedVTableLength(int32_t len) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ImTable* GetImt(PointerSize pointer_size) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetImt(ImTable* imt, PointerSize pointer_size) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ArtMethod* GetEmbeddedVTableEntry(uint32_t i, PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetEmbeddedVTableEntry(uint32_t i, ArtMethod* method, PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| inline void SetEmbeddedVTableEntryUnchecked(uint32_t i, |
| ArtMethod* method, |
| PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void PopulateEmbeddedVTable(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Given a method implemented by this class but potentially from a super class, return the |
| // specific implementation method for this class. |
| ArtMethod* FindVirtualMethodForVirtual(ArtMethod* method, PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Given a method implemented by this class' super class, return the specific implementation |
| // method for this class. |
| ArtMethod* FindVirtualMethodForSuper(ArtMethod* method, PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Given a method from some implementor of this interface, return the specific implementation |
| // method for this class. |
| ArtMethod* FindVirtualMethodForInterfaceSuper(ArtMethod* method, PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Given a method implemented by this class, but potentially from a |
| // super class or interface, return the specific implementation |
| // method for this class. |
| ArtMethod* FindVirtualMethodForInterface(ArtMethod* method, PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_) ALWAYS_INLINE; |
| |
| ArtMethod* FindVirtualMethodForVirtualOrInterface(ArtMethod* method, PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Find a method with the given name and signature in an interface class. |
| // |
| // Search for the method declared in the class, then search for a method declared in any |
| // superinterface, then search the superclass java.lang.Object (implicitly declared methods |
| // in an interface without superinterfaces, see JLS 9.2, can be inherited, see JLS 9.4.1). |
| // TODO: Implement search for a unique maximally-specific non-abstract superinterface method. |
| |
| ArtMethod* FindInterfaceMethod(const StringPiece& name, |
| const StringPiece& signature, |
| PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ArtMethod* FindInterfaceMethod(const StringPiece& name, |
| const Signature& signature, |
| PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ArtMethod* FindInterfaceMethod(ObjPtr<DexCache> dex_cache, |
| uint32_t dex_method_idx, |
| PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Find a method with the given name and signature in a non-interface class. |
| // |
| // Search for the method in the class, following the JLS rules which conflict with the RI |
| // in some cases. The JLS says that inherited methods are searched (JLS 15.12.2.1) and |
| // these can come from a superclass or a superinterface (JLS 8.4.8). We perform the |
| // following search: |
| // 1. Search the methods declared directly in the class. If we find a method with the |
| // given name and signature, return that method. |
| // 2. Search the methods declared in superclasses until we find a method with the given |
| // signature or complete the search in java.lang.Object. If we find a method with the |
| // given name and signature, check if it's been inherited by the class where we're |
| // performing the lookup (qualifying type). If it's inherited, return it. Otherwise, |
| // just remember the method and its declaring class and proceed to step 3. |
| // 3. Search "copied" methods (containing methods inherited from interfaces) in the class |
| // and its superclass chain. If we found a method in step 2 (which was not inherited, |
| // otherwise we would not be performing step 3), end the search when we reach its |
| // declaring class, otherwise search the entire superclass chain. If we find a method |
| // with the given name and signature, return that method. |
| // 4. Return the method found in step 2 if any (not inherited), or null. |
| // |
| // It's the responsibility of the caller to throw exceptions if the returned method (or null) |
| // does not satisfy the request. Special consideration should be given to the case where this |
| // function returns a method that's not inherited (found in step 2, returned in step 4). |
| |
| ArtMethod* FindClassMethod(const StringPiece& name, |
| const StringPiece& signature, |
| PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ArtMethod* FindClassMethod(const StringPiece& name, |
| const Signature& signature, |
| PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ArtMethod* FindClassMethod(ObjPtr<DexCache> dex_cache, |
| uint32_t dex_method_idx, |
| PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ArtMethod* FindConstructor(const StringPiece& signature, PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ArtMethod* FindDeclaredVirtualMethodByName(const StringPiece& name, |
| PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ArtMethod* FindDeclaredDirectMethodByName(const StringPiece& name, |
| PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ArtMethod* FindClassInitializer(PointerSize pointer_size) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| bool HasDefaultMethods() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (GetAccessFlags() & kAccHasDefaultMethod) != 0; |
| } |
| |
| bool HasBeenRecursivelyInitialized() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (GetAccessFlags() & kAccRecursivelyInitialized) != 0; |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| ALWAYS_INLINE int32_t GetIfTableCount() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| ALWAYS_INLINE IfTable* GetIfTable() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE void SetIfTable(ObjPtr<IfTable> new_iftable) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Get instance fields of the class (See also GetSFields). |
| LengthPrefixedArray<ArtField>* GetIFieldsPtr() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE IterationRange<StrideIterator<ArtField>> GetIFields() |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetIFieldsPtr(LengthPrefixedArray<ArtField>* new_ifields) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Unchecked edition has no verification flags. |
| void SetIFieldsPtrUnchecked(LengthPrefixedArray<ArtField>* new_sfields) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| uint32_t NumInstanceFields() REQUIRES_SHARED(Locks::mutator_lock_); |
| ArtField* GetInstanceField(uint32_t i) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Returns the number of instance fields containing reference types. Does not count fields in any |
| // super classes. |
| uint32_t NumReferenceInstanceFields() REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK(IsResolved()); |
| return GetField32(OFFSET_OF_OBJECT_MEMBER(Class, num_reference_instance_fields_)); |
| } |
| |
| uint32_t NumReferenceInstanceFieldsDuringLinking() REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK(IsLoaded() || IsErroneous()); |
| return GetField32(OFFSET_OF_OBJECT_MEMBER(Class, num_reference_instance_fields_)); |
| } |
| |
| void SetNumReferenceInstanceFields(uint32_t new_num) REQUIRES_SHARED(Locks::mutator_lock_) { |
| // Not called within a transaction. |
| SetField32<false>(OFFSET_OF_OBJECT_MEMBER(Class, num_reference_instance_fields_), new_num); |
| } |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
| uint32_t GetReferenceInstanceOffsets() ALWAYS_INLINE REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetReferenceInstanceOffsets(uint32_t new_reference_offsets) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Get the offset of the first reference instance field. Other reference instance fields follow. |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| MemberOffset GetFirstReferenceInstanceFieldOffset() |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Returns the number of static fields containing reference types. |
| uint32_t NumReferenceStaticFields() REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK(IsResolved()); |
| return GetField32(OFFSET_OF_OBJECT_MEMBER(Class, num_reference_static_fields_)); |
| } |
| |
| uint32_t NumReferenceStaticFieldsDuringLinking() REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK(IsLoaded() || IsErroneous() || IsRetired()); |
| return GetField32(OFFSET_OF_OBJECT_MEMBER(Class, num_reference_static_fields_)); |
| } |
| |
| void SetNumReferenceStaticFields(uint32_t new_num) REQUIRES_SHARED(Locks::mutator_lock_) { |
| // Not called within a transaction. |
| SetField32<false>(OFFSET_OF_OBJECT_MEMBER(Class, num_reference_static_fields_), new_num); |
| } |
| |
| // Get the offset of the first reference static field. Other reference static fields follow. |
| template <VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| MemberOffset GetFirstReferenceStaticFieldOffset(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Get the offset of the first reference static field. Other reference static fields follow. |
| MemberOffset GetFirstReferenceStaticFieldOffsetDuringLinking(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Gets the static fields of the class. |
| LengthPrefixedArray<ArtField>* GetSFieldsPtr() REQUIRES_SHARED(Locks::mutator_lock_); |
| ALWAYS_INLINE IterationRange<StrideIterator<ArtField>> GetSFields() |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void SetSFieldsPtr(LengthPrefixedArray<ArtField>* new_sfields) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Unchecked edition has no verification flags. |
| void SetSFieldsPtrUnchecked(LengthPrefixedArray<ArtField>* new_sfields) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| uint32_t NumStaticFields() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // TODO: uint16_t |
| ArtField* GetStaticField(uint32_t i) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Find a static or instance field using the JLS resolution order |
| static ArtField* FindField(Thread* self, |
| ObjPtr<Class> klass, |
| const StringPiece& name, |
| const StringPiece& type) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Finds the given instance field in this class or a superclass. |
| ArtField* FindInstanceField(const StringPiece& name, const StringPiece& type) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Finds the given instance field in this class or a superclass, only searches classes that |
| // have the same dex cache. |
| ArtField* FindInstanceField(ObjPtr<DexCache> dex_cache, uint32_t dex_field_idx) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ArtField* FindDeclaredInstanceField(const StringPiece& name, const StringPiece& type) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ArtField* FindDeclaredInstanceField(ObjPtr<DexCache> dex_cache, uint32_t dex_field_idx) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Finds the given static field in this class or a superclass. |
| static ArtField* FindStaticField(Thread* self, |
| ObjPtr<Class> klass, |
| const StringPiece& name, |
| const StringPiece& type) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Finds the given static field in this class or superclass, only searches classes that |
| // have the same dex cache. |
| static ArtField* FindStaticField(Thread* self, |
| ObjPtr<Class> klass, |
| ObjPtr<DexCache> dex_cache, |
| uint32_t dex_field_idx) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ArtField* FindDeclaredStaticField(const StringPiece& name, const StringPiece& type) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ArtField* FindDeclaredStaticField(ObjPtr<DexCache> dex_cache, uint32_t dex_field_idx) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| pid_t GetClinitThreadId() REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK(IsIdxLoaded() || IsErroneous()) << PrettyClass(); |
| return GetField32(OFFSET_OF_OBJECT_MEMBER(Class, clinit_thread_id_)); |
| } |
| |
| void SetClinitThreadId(pid_t new_clinit_thread_id) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| ClassExt* GetExtData() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Returns the ExtData for this class, allocating one if necessary. This should be the only way |
| // to force ext_data_ to be set. No functions are available for changing an already set ext_data_ |
| // since doing so is not allowed. |
| ClassExt* EnsureExtDataPresent(Thread* self) |
| REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_); |
| |
| uint16_t GetDexClassDefIndex() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetField32(OFFSET_OF_OBJECT_MEMBER(Class, dex_class_def_idx_)); |
| } |
| |
| void SetDexClassDefIndex(uint16_t class_def_idx) REQUIRES_SHARED(Locks::mutator_lock_) { |
| SetField32Transaction(OFFSET_OF_OBJECT_MEMBER(Class, dex_class_def_idx_), class_def_idx); |
| } |
| |
| dex::TypeIndex GetDexTypeIndex() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return dex::TypeIndex( |
| static_cast<uint16_t>(GetField32(OFFSET_OF_OBJECT_MEMBER(Class, dex_type_idx_)))); |
| } |
| |
| void SetDexTypeIndex(dex::TypeIndex type_idx) REQUIRES_SHARED(Locks::mutator_lock_) { |
| SetField32Transaction(OFFSET_OF_OBJECT_MEMBER(Class, dex_type_idx_), type_idx.index_); |
| } |
| |
| dex::TypeIndex FindTypeIndexInOtherDexFile(const DexFile& dex_file) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| static Class* GetJavaLangClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK(HasJavaLangClass()); |
| return java_lang_Class_.Read(); |
| } |
| |
| static bool HasJavaLangClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return !java_lang_Class_.IsNull(); |
| } |
| |
| // Can't call this SetClass or else gets called instead of Object::SetClass in places. |
| static void SetClassClass(ObjPtr<Class> java_lang_Class) REQUIRES_SHARED(Locks::mutator_lock_); |
| static void ResetClass(); |
| static void VisitRoots(RootVisitor* visitor) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Visit native roots visits roots which are keyed off the native pointers such as ArtFields and |
| // ArtMethods. |
| template<ReadBarrierOption kReadBarrierOption = kWithReadBarrier, class Visitor> |
| void VisitNativeRoots(Visitor& visitor, PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Get one of the primitive classes. |
| static ObjPtr<mirror::Class> GetPrimitiveClass(ObjPtr<mirror::String> name) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // When class is verified, set the kAccSkipAccessChecks flag on each method. |
| void SetSkipAccessChecksFlagOnAllMethods(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Get the descriptor of the class. In a few cases a std::string is required, rather than |
| // always create one the storage argument is populated and its internal c_str() returned. We do |
| // this to avoid memory allocation in the common case. |
| const char* GetDescriptor(std::string* storage) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| const char* GetArrayDescriptor(std::string* storage) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| bool DescriptorEquals(const char* match) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| const DexFile::ClassDef* GetClassDef() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE uint32_t NumDirectInterfaces() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| dex::TypeIndex GetDirectInterfaceTypeIdx(uint32_t idx) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Get the direct interface of the `klass` at index `idx` if resolved, otherwise return null. |
| // If the caller expects the interface to be resolved, for example for a resolved `klass`, |
| // that assumption should be checked by `DCHECK(result != nullptr)`. |
| static ObjPtr<Class> GetDirectInterface(Thread* self, ObjPtr<Class> klass, uint32_t idx) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Resolve and get the direct interface of the `klass` at index `idx`. |
| // Returns null with a pending exception if the resolution fails. |
| static ObjPtr<Class> ResolveDirectInterface(Thread* self, Handle<Class> klass, uint32_t idx) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| const char* GetSourceFile() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| std::string GetLocation() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| const DexFile& GetDexFile() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| const DexFile::TypeList* GetInterfaceTypeList() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Asserts we are initialized or initializing in the given thread. |
| void AssertInitializedOrInitializingInThread(Thread* self) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| Class* CopyOf(Thread* self, |
| int32_t new_length, |
| ImTable* imt, |
| PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_); |
| |
| // For proxy class only. |
| ObjectArray<Class>* GetProxyInterfaces() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // For proxy class only. |
| ObjectArray<ObjectArray<Class>>* GetProxyThrows() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // For reference class only. |
| MemberOffset GetDisableIntrinsicFlagOffset() REQUIRES_SHARED(Locks::mutator_lock_); |
| MemberOffset GetSlowPathFlagOffset() REQUIRES_SHARED(Locks::mutator_lock_); |
| bool GetSlowPathEnabled() REQUIRES_SHARED(Locks::mutator_lock_); |
| void SetSlowPath(bool enabled) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // May cause thread suspension due to EqualParameters. |
| ArtMethod* GetDeclaredConstructor(Thread* self, |
| Handle<ObjectArray<Class>> args, |
| PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| static int32_t GetInnerClassFlags(Handle<Class> h_this, int32_t default_value) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Used to initialize a class in the allocation code path to ensure it is guarded by a StoreStore |
| // fence. |
| class InitializeClassVisitor { |
| public: |
| explicit InitializeClassVisitor(uint32_t class_size) : class_size_(class_size) { |
| } |
| |
| void operator()(ObjPtr<Object> obj, size_t usable_size) const |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| private: |
| const uint32_t class_size_; |
| |
| DISALLOW_COPY_AND_ASSIGN(InitializeClassVisitor); |
| }; |
| |
| // Returns true if the class loader is null, ie the class loader is the boot strap class loader. |
| bool IsBootStrapClassLoaded() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetClassLoader() == nullptr; |
| } |
| |
| static size_t ImTableEntrySize(PointerSize pointer_size) { |
| return static_cast<size_t>(pointer_size); |
| } |
| |
| static size_t VTableEntrySize(PointerSize pointer_size) { |
| return static_cast<size_t>(pointer_size); |
| } |
| |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetDirectMethodsSliceUnchecked(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetVirtualMethodsSliceUnchecked(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetDeclaredMethodsSliceUnchecked(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetDeclaredVirtualMethodsSliceUnchecked( |
| PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE ArraySlice<ArtMethod> GetCopiedMethodsSliceUnchecked(PointerSize pointer_size) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| static std::string PrettyDescriptor(ObjPtr<mirror::Class> klass) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| std::string PrettyDescriptor() |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| // Returns a human-readable form of the name of the given class. |
| // Given String.class, the output would be "java.lang.Class<java.lang.String>". |
| static std::string PrettyClass(ObjPtr<mirror::Class> c) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| std::string PrettyClass() |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| // Returns a human-readable form of the name of the given class with its class loader. |
| static std::string PrettyClassAndClassLoader(ObjPtr<mirror::Class> c) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| std::string PrettyClassAndClassLoader() |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Fix up all of the native pointers in the class by running them through the visitor. Only sets |
| // the corresponding entry in dest if visitor(obj) != obj to prevent dirty memory. Dest should be |
| // initialized to a copy of *this to prevent issues. Does not visit the ArtMethod and ArtField |
| // roots. |
| template <VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier, |
| typename Visitor> |
| void FixupNativePointers(Class* dest, PointerSize pointer_size, const Visitor& visitor) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| private: |
| ALWAYS_INLINE void SetMethodsPtrInternal(LengthPrefixedArray<ArtMethod>* new_methods) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| ALWAYS_INLINE static ArraySlice<ArtMethod> GetMethodsSliceRangeUnchecked( |
| LengthPrefixedArray<ArtMethod>* methods, |
| PointerSize pointer_size, |
| uint32_t start_offset, |
| uint32_t end_offset) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template <bool throw_on_failure> |
| bool ResolvedFieldAccessTest(ObjPtr<Class> access_to, |
| ArtField* field, |
| ObjPtr<DexCache> dex_cache, |
| uint32_t field_idx) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template <bool throw_on_failure> |
| bool ResolvedMethodAccessTest(ObjPtr<Class> access_to, |
| ArtMethod* resolved_method, |
| ObjPtr<DexCache> dex_cache, |
| uint32_t method_idx, |
| InvokeType throw_invoke_type) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| bool Implements(ObjPtr<Class> klass) REQUIRES_SHARED(Locks::mutator_lock_); |
| bool IsArrayAssignableFromArray(ObjPtr<Class> klass) REQUIRES_SHARED(Locks::mutator_lock_); |
| bool IsAssignableFromArray(ObjPtr<Class> klass) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void CheckObjectAlloc() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Unchecked editions is for root visiting. |
| LengthPrefixedArray<ArtField>* GetSFieldsPtrUnchecked() REQUIRES_SHARED(Locks::mutator_lock_); |
| IterationRange<StrideIterator<ArtField>> GetSFieldsUnchecked() |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| LengthPrefixedArray<ArtField>* GetIFieldsPtrUnchecked() REQUIRES_SHARED(Locks::mutator_lock_); |
| IterationRange<StrideIterator<ArtField>> GetIFieldsUnchecked() |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // The index in the methods_ array where the first declared virtual method is. |
| ALWAYS_INLINE uint32_t GetVirtualMethodsStartOffset() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // The index in the methods_ array where the first direct method is. |
| ALWAYS_INLINE uint32_t GetDirectMethodsStartOffset() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // The index in the methods_ array where the first copied method is. |
| ALWAYS_INLINE uint32_t GetCopiedMethodsStartOffset() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| bool ProxyDescriptorEquals(const char* match) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| template<VerifyObjectFlags kVerifyFlags> |
| void GetAccessFlagsDCheck() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Check that the pointer size matches the one in the class linker. |
| ALWAYS_INLINE static void CheckPointerSize(PointerSize pointer_size); |
| |
| static MemberOffset EmbeddedVTableOffset(PointerSize pointer_size); |
| template <bool kVisitNativeRoots, |
| VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| ReadBarrierOption kReadBarrierOption = kWithReadBarrier, |
| typename Visitor> |
| void VisitReferences(ObjPtr<Class> klass, const Visitor& visitor) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // 'Class' Object Fields |
| // Order governed by java field ordering. See art::ClassLinker::LinkFields. |
| |
| // Defining class loader, or null for the "bootstrap" system loader. |
| HeapReference<ClassLoader> class_loader_; |
| |
| // For array classes, the component class object for instanceof/checkcast |
| // (for String[][][], this will be String[][]). null for non-array classes. |
| HeapReference<Class> component_type_; |
| |
| // DexCache of resolved constant pool entries (will be null for classes generated by the |
| // runtime such as arrays and primitive classes). |
| HeapReference<DexCache> dex_cache_; |
| |
| // Extraneous class data that is not always needed. This field is allocated lazily and may |
| // only be set with 'this' locked. This is synchronized on 'this'. |
| // TODO(allight) We should probably synchronize it on something external or handle allocation in |
| // some other (safe) way to prevent possible deadlocks. |
| HeapReference<ClassExt> ext_data_; |
| |
| // The interface table (iftable_) contains pairs of a interface class and an array of the |
| // interface methods. There is one pair per interface supported by this class. That means one |
| // pair for each interface we support directly, indirectly via superclass, or indirectly via a |
| // superinterface. This will be null if neither we nor our superclass implement any interfaces. |
| // |
| // Why we need this: given "class Foo implements Face", declare "Face faceObj = new Foo()". |
| // Invoke faceObj.blah(), where "blah" is part of the Face interface. We can't easily use a |
| // single vtable. |
| // |
| // For every interface a concrete class implements, we create an array of the concrete vtable_ |
| // methods for the methods in the interface. |
| HeapReference<IfTable> iftable_; |
| |
| // Descriptor for the class such as "java.lang.Class" or "[C". Lazily initialized by ComputeName |
| HeapReference<String> name_; |
| |
| // The superclass, or null if this is java.lang.Object or a primitive type. |
| // |
| // Note that interfaces have java.lang.Object as their |
| // superclass. This doesn't match the expectations in JNI |
| // GetSuperClass or java.lang.Class.getSuperClass() which need to |
| // check for interfaces and return null. |
| HeapReference<Class> super_class_; |
| |
| // Virtual method table (vtable), for use by "invoke-virtual". The vtable from the superclass is |
| // copied in, and virtual methods from our class either replace those from the super or are |
| // appended. For abstract classes, methods may be created in the vtable that aren't in |
| // virtual_ methods_ for miranda methods. |
| HeapReference<PointerArray> vtable_; |
| |
| // instance fields |
| // |
| // These describe the layout of the contents of an Object. |
| // Note that only the fields directly declared by this class are |
| // listed in ifields; fields declared by a superclass are listed in |
| // the superclass's Class.ifields. |
| // |
| // ArtFields are allocated as a length prefixed ArtField array, and not an array of pointers to |
| // ArtFields. |
| uint64_t ifields_; |
| |
| // Pointer to an ArtMethod length-prefixed array. All the methods where this class is the place |
| // where they are logically defined. This includes all private, static, final and virtual methods |
| // as well as inherited default methods and miranda methods. |
| // |
| // The slice methods_ [0, virtual_methods_offset_) are the direct (static, private, init) methods |
| // declared by this class. |
| // |
| // The slice methods_ [virtual_methods_offset_, copied_methods_offset_) are the virtual methods |
| // declared by this class. |
| // |
| // The slice methods_ [copied_methods_offset_, |methods_|) are the methods that are copied from |
| // interfaces such as miranda or default methods. These are copied for resolution purposes as this |
| // class is where they are (logically) declared as far as the virtual dispatch is concerned. |
| // |
| // Note that this field is used by the native debugger as the unique identifier for the type. |
| uint64_t methods_; |
| |
| // Static fields length-prefixed array. |
| uint64_t sfields_; |
| |
| // Access flags; low 16 bits are defined by VM spec. |
| uint32_t access_flags_; |
| |
| // Class flags to help speed up visiting object references. |
| uint32_t class_flags_; |
| |
| // Total size of the Class instance; used when allocating storage on gc heap. |
| // See also object_size_. |
| uint32_t class_size_; |
| |
| // Tid used to check for recursive <clinit> invocation. |
| pid_t clinit_thread_id_; |
| |
| // ClassDef index in dex file, -1 if no class definition such as an array. |
| // TODO: really 16bits |
| int32_t dex_class_def_idx_; |
| |
| // Type index in dex file. |
| // TODO: really 16bits |
| int32_t dex_type_idx_; |
| |
| // Number of instance fields that are object refs. |
| uint32_t num_reference_instance_fields_; |
| |
| // Number of static fields that are object refs, |
| uint32_t num_reference_static_fields_; |
| |
| // Total object size; used when allocating storage on gc heap. |
| // (For interfaces and abstract classes this will be zero.) |
| // See also class_size_. |
| uint32_t object_size_; |
| |
| // Aligned object size for allocation fast path. The value is max uint32_t if the object is |
| // uninitialized or finalizable. Not currently used for variable sized objects. |
| uint32_t object_size_alloc_fast_path_; |
| |
| // The lower 16 bits contains a Primitive::Type value. The upper 16 |
| // bits contains the size shift of the primitive type. |
| uint32_t primitive_type_; |
| |
| // Bitmap of offsets of ifields. |
| uint32_t reference_instance_offsets_; |
| |
| // See the real definition in subtype_check_bits_and_status.h |
| // typeof(status_) is actually SubtypeCheckBitsAndStatus. |
| uint32_t status_; |
| |
| // The offset of the first virtual method that is copied from an interface. This includes miranda, |
| // default, and default-conflict methods. Having a hard limit of ((2 << 16) - 1) for methods |
| // defined on a single class is well established in Java so we will use only uint16_t's here. |
| uint16_t copied_methods_offset_; |
| |
| // The offset of the first declared virtual methods in the methods_ array. |
| uint16_t virtual_methods_offset_; |
| |
| // TODO: ? |
| // initiating class loader list |
| // NOTE: for classes with low serialNumber, these are unused, and the |
| // values are kept in a table in gDvm. |
| // InitiatingLoaderList initiating_loader_list_; |
| |
| // The following data exist in real class objects. |
| // Embedded Imtable, for class object that's not an interface, fixed size. |
| // ImTableEntry embedded_imtable_[0]; |
| // Embedded Vtable, for class object that's not an interface, variable size. |
| // VTableEntry embedded_vtable_[0]; |
| // Static fields, variable size. |
| // uint32_t fields_[0]; |
| |
| // java.lang.Class |
| static GcRoot<Class> java_lang_Class_; |
| |
| ART_FRIEND_TEST(DexCacheTest, TestResolvedFieldAccess); // For ResolvedFieldAccessTest |
| friend struct art::ClassOffsets; // for verifying offset information |
| friend class Object; // For VisitReferences |
| DISALLOW_IMPLICIT_CONSTRUCTORS(Class); |
| }; |
| |
| } // namespace mirror |
| } // namespace art |
| |
| #endif // ART_RUNTIME_MIRROR_CLASS_H_ |