| /* |
| * 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_ART_FIELD_INL_H_ |
| #define ART_RUNTIME_ART_FIELD_INL_H_ |
| |
| #include "art_field.h" |
| |
| #include <android-base/logging.h> |
| |
| #include "class_linker-inl.h" |
| #include "dex/dex_file-inl.h" |
| #include "dex/primitive.h" |
| #include "gc/accounting/card_table-inl.h" |
| #include "gc_root-inl.h" |
| #include "jvalue.h" |
| #include "mirror/dex_cache-inl.h" |
| #include "mirror/object-inl.h" |
| #include "obj_ptr-inl.h" |
| #include "thread-current-inl.h" |
| |
| namespace art { |
| |
| inline bool ArtField::IsProxyField() { |
| // No read barrier needed, we're reading the constant declaring class only to read |
| // the constant proxy flag. See ReadBarrierOption. |
| return GetDeclaringClass<kWithoutReadBarrier>()->IsProxyClass<kVerifyNone>(); |
| } |
| |
| template<ReadBarrierOption kReadBarrierOption> |
| inline ObjPtr<mirror::Class> ArtField::GetDeclaringClass() { |
| GcRootSource gc_root_source(this); |
| ObjPtr<mirror::Class> result = declaring_class_.Read<kReadBarrierOption>(&gc_root_source); |
| DCHECK(result != nullptr); |
| DCHECK(result->IsIdxLoaded() || result->IsErroneous()) << result->GetStatus(); |
| return result; |
| } |
| |
| inline void ArtField::SetDeclaringClass(ObjPtr<mirror::Class> new_declaring_class) { |
| declaring_class_ = GcRoot<mirror::Class>(new_declaring_class); |
| } |
| |
| inline MemberOffset ArtField::GetOffsetDuringLinking() { |
| DCHECK(GetDeclaringClass()->IsLoaded() || GetDeclaringClass()->IsErroneous()); |
| return MemberOffset(offset_); |
| } |
| |
| inline uint32_t ArtField::Get32(ObjPtr<mirror::Object> object) { |
| DCHECK(object != nullptr) << PrettyField(); |
| DCHECK(!IsStatic() || (object == GetDeclaringClass()) || !Runtime::Current()->IsStarted()); |
| if (UNLIKELY(IsVolatile())) { |
| return object->GetField32Volatile(GetOffset()); |
| } |
| return object->GetField32(GetOffset()); |
| } |
| |
| template<bool kTransactionActive> |
| inline void ArtField::Set32(ObjPtr<mirror::Object> object, uint32_t new_value) { |
| DCHECK(object != nullptr) << PrettyField(); |
| DCHECK(!IsStatic() || (object == GetDeclaringClass()) || !Runtime::Current()->IsStarted()); |
| if (UNLIKELY(IsVolatile())) { |
| object->SetField32Volatile<kTransactionActive>(GetOffset(), new_value); |
| } else { |
| object->SetField32<kTransactionActive>(GetOffset(), new_value); |
| } |
| } |
| |
| inline uint64_t ArtField::Get64(ObjPtr<mirror::Object> object) { |
| DCHECK(object != nullptr) << PrettyField(); |
| DCHECK(!IsStatic() || (object == GetDeclaringClass()) || !Runtime::Current()->IsStarted()); |
| if (UNLIKELY(IsVolatile())) { |
| return object->GetField64Volatile(GetOffset()); |
| } |
| return object->GetField64(GetOffset()); |
| } |
| |
| template<bool kTransactionActive> |
| inline void ArtField::Set64(ObjPtr<mirror::Object> object, uint64_t new_value) { |
| DCHECK(object != nullptr) << PrettyField(); |
| DCHECK(!IsStatic() || (object == GetDeclaringClass()) || !Runtime::Current()->IsStarted()); |
| if (UNLIKELY(IsVolatile())) { |
| object->SetField64Volatile<kTransactionActive>(GetOffset(), new_value); |
| } else { |
| object->SetField64<kTransactionActive>(GetOffset(), new_value); |
| } |
| } |
| |
| template<class MirrorType> |
| inline ObjPtr<MirrorType> ArtField::GetObj(ObjPtr<mirror::Object> object) { |
| DCHECK(object != nullptr) << PrettyField(); |
| DCHECK(!IsStatic() || (object == GetDeclaringClass()) || !Runtime::Current()->IsStarted()); |
| if (UNLIKELY(IsVolatile())) { |
| return object->GetFieldObjectVolatile<MirrorType>(GetOffset()); |
| } |
| return object->GetFieldObject<MirrorType>(GetOffset()); |
| } |
| |
| template<bool kTransactionActive> |
| inline void ArtField::SetObj(ObjPtr<mirror::Object> object, ObjPtr<mirror::Object> new_value) { |
| DCHECK(object != nullptr) << PrettyField(); |
| DCHECK(!IsStatic() || (object == GetDeclaringClass()) || !Runtime::Current()->IsStarted()); |
| if (UNLIKELY(IsVolatile())) { |
| object->SetFieldObjectVolatile<kTransactionActive>(GetOffset(), new_value); |
| } else { |
| object->SetFieldObject<kTransactionActive>(GetOffset(), new_value); |
| } |
| } |
| |
| #define FIELD_GET(object, type) \ |
| DCHECK_EQ(Primitive::kPrim ## type, GetTypeAsPrimitiveType()) << PrettyField(); \ |
| DCHECK((object) != nullptr) << PrettyField(); \ |
| DCHECK(!IsStatic() || ((object) == GetDeclaringClass()) || !Runtime::Current()->IsStarted()); \ |
| if (UNLIKELY(IsVolatile())) { \ |
| return (object)->GetField ## type ## Volatile(GetOffset()); \ |
| } \ |
| return (object)->GetField ## type(GetOffset()); |
| |
| #define FIELD_SET(object, type, value) \ |
| DCHECK((object) != nullptr) << PrettyField(); \ |
| DCHECK(!IsStatic() || ((object) == GetDeclaringClass()) || !Runtime::Current()->IsStarted()); \ |
| if (UNLIKELY(IsVolatile())) { \ |
| (object)->SetField ## type ## Volatile<kTransactionActive>(GetOffset(), value); \ |
| } else { \ |
| (object)->SetField ## type<kTransactionActive>(GetOffset(), value); \ |
| } |
| |
| inline uint8_t ArtField::GetBoolean(ObjPtr<mirror::Object> object) { |
| FIELD_GET(object, Boolean); |
| } |
| |
| template<bool kTransactionActive> |
| inline void ArtField::SetBoolean(ObjPtr<mirror::Object> object, uint8_t z) { |
| if (kIsDebugBuild) { |
| // For simplicity, this method is being called by the compiler entrypoint for |
| // both boolean and byte fields. |
| Primitive::Type type = GetTypeAsPrimitiveType(); |
| DCHECK(type == Primitive::kPrimBoolean || type == Primitive::kPrimByte) << PrettyField(); |
| } |
| FIELD_SET(object, Boolean, z); |
| } |
| |
| inline int8_t ArtField::GetByte(ObjPtr<mirror::Object> object) { |
| FIELD_GET(object, Byte); |
| } |
| |
| template<bool kTransactionActive> |
| inline void ArtField::SetByte(ObjPtr<mirror::Object> object, int8_t b) { |
| DCHECK_EQ(Primitive::kPrimByte, GetTypeAsPrimitiveType()) << PrettyField(); |
| FIELD_SET(object, Byte, b); |
| } |
| |
| inline uint16_t ArtField::GetChar(ObjPtr<mirror::Object> object) { |
| FIELD_GET(object, Char); |
| } |
| |
| template<bool kTransactionActive> |
| inline void ArtField::SetChar(ObjPtr<mirror::Object> object, uint16_t c) { |
| if (kIsDebugBuild) { |
| // For simplicity, this method is being called by the compiler entrypoint for |
| // both char and short fields. |
| Primitive::Type type = GetTypeAsPrimitiveType(); |
| DCHECK(type == Primitive::kPrimChar || type == Primitive::kPrimShort) << PrettyField(); |
| } |
| FIELD_SET(object, Char, c); |
| } |
| |
| inline int16_t ArtField::GetShort(ObjPtr<mirror::Object> object) { |
| FIELD_GET(object, Short); |
| } |
| |
| template<bool kTransactionActive> |
| inline void ArtField::SetShort(ObjPtr<mirror::Object> object, int16_t s) { |
| DCHECK_EQ(Primitive::kPrimShort, GetTypeAsPrimitiveType()) << PrettyField(); |
| FIELD_SET(object, Short, s); |
| } |
| |
| #undef FIELD_GET |
| #undef FIELD_SET |
| |
| inline int32_t ArtField::GetInt(ObjPtr<mirror::Object> object) { |
| if (kIsDebugBuild) { |
| // For simplicity, this method is being called by the compiler entrypoint for |
| // both int and float fields. |
| Primitive::Type type = GetTypeAsPrimitiveType(); |
| CHECK(type == Primitive::kPrimInt || type == Primitive::kPrimFloat) << PrettyField(); |
| } |
| return Get32(object); |
| } |
| |
| template<bool kTransactionActive> |
| inline void ArtField::SetInt(ObjPtr<mirror::Object> object, int32_t i) { |
| if (kIsDebugBuild) { |
| // For simplicity, this method is being called by the compiler entrypoint for |
| // both int and float fields. |
| Primitive::Type type = GetTypeAsPrimitiveType(); |
| CHECK(type == Primitive::kPrimInt || type == Primitive::kPrimFloat) << PrettyField(); |
| } |
| Set32<kTransactionActive>(object, i); |
| } |
| |
| inline int64_t ArtField::GetLong(ObjPtr<mirror::Object> object) { |
| if (kIsDebugBuild) { |
| // For simplicity, this method is being called by the compiler entrypoint for |
| // both long and double fields. |
| Primitive::Type type = GetTypeAsPrimitiveType(); |
| CHECK(type == Primitive::kPrimLong || type == Primitive::kPrimDouble) << PrettyField(); |
| } |
| return Get64(object); |
| } |
| |
| template<bool kTransactionActive> |
| inline void ArtField::SetLong(ObjPtr<mirror::Object> object, int64_t j) { |
| if (kIsDebugBuild) { |
| // For simplicity, this method is being called by the compiler entrypoint for |
| // both long and double fields. |
| Primitive::Type type = GetTypeAsPrimitiveType(); |
| CHECK(type == Primitive::kPrimLong || type == Primitive::kPrimDouble) << PrettyField(); |
| } |
| Set64<kTransactionActive>(object, j); |
| } |
| |
| inline float ArtField::GetFloat(ObjPtr<mirror::Object> object) { |
| DCHECK_EQ(Primitive::kPrimFloat, GetTypeAsPrimitiveType()) << PrettyField(); |
| JValue bits; |
| bits.SetI(Get32(object)); |
| return bits.GetF(); |
| } |
| |
| template<bool kTransactionActive> |
| inline void ArtField::SetFloat(ObjPtr<mirror::Object> object, float f) { |
| DCHECK_EQ(Primitive::kPrimFloat, GetTypeAsPrimitiveType()) << PrettyField(); |
| JValue bits; |
| bits.SetF(f); |
| Set32<kTransactionActive>(object, bits.GetI()); |
| } |
| |
| inline double ArtField::GetDouble(ObjPtr<mirror::Object> object) { |
| DCHECK_EQ(Primitive::kPrimDouble, GetTypeAsPrimitiveType()) << PrettyField(); |
| JValue bits; |
| bits.SetJ(Get64(object)); |
| return bits.GetD(); |
| } |
| |
| template<bool kTransactionActive> |
| inline void ArtField::SetDouble(ObjPtr<mirror::Object> object, double d) { |
| DCHECK_EQ(Primitive::kPrimDouble, GetTypeAsPrimitiveType()) << PrettyField(); |
| JValue bits; |
| bits.SetD(d); |
| Set64<kTransactionActive>(object, bits.GetJ()); |
| } |
| |
| inline ObjPtr<mirror::Object> ArtField::GetObject(ObjPtr<mirror::Object> object) { |
| DCHECK_EQ(Primitive::kPrimNot, GetTypeAsPrimitiveType()) << PrettyField(); |
| return GetObj(object); |
| } |
| |
| template<bool kTransactionActive> |
| inline void ArtField::SetObject(ObjPtr<mirror::Object> object, ObjPtr<mirror::Object> l) { |
| DCHECK_EQ(Primitive::kPrimNot, GetTypeAsPrimitiveType()) << PrettyField(); |
| SetObj<kTransactionActive>(object, l); |
| } |
| |
| inline const char* ArtField::GetName() REQUIRES_SHARED(Locks::mutator_lock_) { |
| uint32_t field_index = GetDexFieldIndex(); |
| if (UNLIKELY(IsProxyField())) { |
| DCHECK(IsStatic()); |
| DCHECK_LT(field_index, 2U); |
| return field_index == 0 ? "interfaces" : "throws"; |
| } |
| const DexFile* dex_file = GetDexFile(); |
| return dex_file->GetFieldName(dex_file->GetFieldId(field_index)); |
| } |
| |
| inline const char* ArtField::GetTypeDescriptor() REQUIRES_SHARED(Locks::mutator_lock_) { |
| uint32_t field_index = GetDexFieldIndex(); |
| if (UNLIKELY(IsProxyField())) { |
| DCHECK(IsStatic()); |
| DCHECK_LT(field_index, 2U); |
| // 0 == Class[] interfaces; 1 == Class[][] throws; |
| return field_index == 0 ? "[Ljava/lang/Class;" : "[[Ljava/lang/Class;"; |
| } |
| const DexFile* dex_file = GetDexFile(); |
| const dex::FieldId& field_id = dex_file->GetFieldId(field_index); |
| return dex_file->GetFieldTypeDescriptor(field_id); |
| } |
| |
| inline Primitive::Type ArtField::GetTypeAsPrimitiveType() |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| return Primitive::GetType(GetTypeDescriptor()[0]); |
| } |
| |
| inline bool ArtField::IsPrimitiveType() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetTypeAsPrimitiveType() != Primitive::kPrimNot; |
| } |
| |
| inline ObjPtr<mirror::Class> ArtField::LookupResolvedType() { |
| ScopedAssertNoThreadSuspension ants(__FUNCTION__); |
| if (UNLIKELY(IsProxyField())) { |
| return ProxyFindSystemClass(GetTypeDescriptor()); |
| } |
| ObjPtr<mirror::Class> type = Runtime::Current()->GetClassLinker()->LookupResolvedType( |
| GetDexFile()->GetFieldId(GetDexFieldIndex()).type_idx_, this); |
| DCHECK(!Thread::Current()->IsExceptionPending()); |
| return type; |
| } |
| |
| inline ObjPtr<mirror::Class> ArtField::ResolveType() { |
| if (UNLIKELY(IsProxyField())) { |
| return ProxyFindSystemClass(GetTypeDescriptor()); |
| } |
| ObjPtr<mirror::Class> type = Runtime::Current()->GetClassLinker()->ResolveType( |
| GetDexFile()->GetFieldId(GetDexFieldIndex()).type_idx_, this); |
| DCHECK_EQ(type == nullptr, Thread::Current()->IsExceptionPending()); |
| return type; |
| } |
| |
| inline size_t ArtField::FieldSize() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return Primitive::ComponentSize(GetTypeAsPrimitiveType()); |
| } |
| |
| template <ReadBarrierOption kReadBarrierOption> |
| inline ObjPtr<mirror::DexCache> ArtField::GetDexCache() REQUIRES_SHARED(Locks::mutator_lock_) { |
| ObjPtr<mirror::Class> klass = GetDeclaringClass<kReadBarrierOption>(); |
| return klass->GetDexCache<kDefaultVerifyFlags, kReadBarrierOption>(); |
| } |
| |
| inline const DexFile* ArtField::GetDexFile() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetDexCache<kWithoutReadBarrier>()->GetDexFile(); |
| } |
| |
| inline ObjPtr<mirror::String> ArtField::ResolveNameString() { |
| uint32_t dex_field_index = GetDexFieldIndex(); |
| CHECK_NE(dex_field_index, dex::kDexNoIndex); |
| const dex::FieldId& field_id = GetDexFile()->GetFieldId(dex_field_index); |
| return Runtime::Current()->GetClassLinker()->ResolveString(field_id.name_idx_, this); |
| } |
| |
| // If kExactOffset is true then we only find the matching offset, not the field containing the |
| // offset. |
| template <bool kExactOffset> |
| static inline ArtField* FindFieldWithOffset( |
| const IterationRange<StrideIterator<ArtField>>& fields, |
| uint32_t field_offset) REQUIRES_SHARED(Locks::mutator_lock_) { |
| for (ArtField& field : fields) { |
| if (kExactOffset) { |
| if (field.GetOffset().Uint32Value() == field_offset) { |
| return &field; |
| } |
| } else { |
| const uint32_t offset = field.GetOffset().Uint32Value(); |
| Primitive::Type type = field.GetTypeAsPrimitiveType(); |
| const size_t field_size = Primitive::ComponentSize(type); |
| DCHECK_GT(field_size, 0u); |
| if (offset <= field_offset && field_offset < offset + field_size) { |
| return &field; |
| } |
| } |
| } |
| return nullptr; |
| } |
| |
| template <bool kExactOffset> |
| inline ArtField* ArtField::FindInstanceFieldWithOffset(ObjPtr<mirror::Class> klass, |
| uint32_t field_offset) { |
| DCHECK(klass != nullptr); |
| ArtField* field = FindFieldWithOffset<kExactOffset>(klass->GetIFields(), field_offset); |
| if (field != nullptr) { |
| return field; |
| } |
| // We did not find field in the class: look into superclass. |
| return (klass->GetSuperClass() != nullptr) ? |
| FindInstanceFieldWithOffset<kExactOffset>(klass->GetSuperClass(), field_offset) : nullptr; |
| } |
| |
| template <bool kExactOffset> |
| inline ArtField* ArtField::FindStaticFieldWithOffset(ObjPtr<mirror::Class> klass, |
| uint32_t field_offset) { |
| DCHECK(klass != nullptr); |
| return FindFieldWithOffset<kExactOffset>(klass->GetSFields(), field_offset); |
| } |
| |
| inline ObjPtr<mirror::ClassLoader> ArtField::GetClassLoader() { |
| return GetDeclaringClass()->GetClassLoader(); |
| } |
| |
| } // namespace art |
| |
| #endif // ART_RUNTIME_ART_FIELD_INL_H_ |