runtime/art_field-inl.h - LeafOS-Project/android_art - Gitiles

 /*
  * 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 HIDDEN {

 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>();
 }

 // We are only ever allowed to set our own final fields
 inline bool ArtField::CanBeChangedBy(ArtMethod* method) {
   ObjPtr<mirror::Class> declaring_class(GetDeclaringClass());
   ObjPtr<mirror::Class> referring_class(method->GetDeclaringClass());
   return !IsFinal() || (declaring_class == referring_class);
 }

 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);
 }

 template<typename RootVisitorType>
 void ArtField::VisitArrayRoots(RootVisitorType& visitor,
                                uint8_t* start_boundary,
                                uint8_t* end_boundary,
                                LengthPrefixedArray<ArtField>* array) {
   DCHECK_LE(start_boundary, end_boundary);
   DCHECK_NE(array->size(), 0u);
   ArtField* first_field = &array->At(0);
   end_boundary = std::min(end_boundary, reinterpret_cast<uint8_t*>(first_field + array->size()));
   static constexpr size_t kFieldSize = sizeof(ArtField);
   // Confirm the assumption that ArtField size is power of two. It's important
   // as we assume so below (RoundUp).
   static_assert(IsPowerOfTwo(kFieldSize));
   uint8_t* declaring_class =
       reinterpret_cast<uint8_t*>(first_field) + DeclaringClassOffset().Int32Value();
   // Jump to the first class to visit.
   if (declaring_class < start_boundary) {
     declaring_class += RoundUp(start_boundary - declaring_class, kFieldSize);
   }
   while (declaring_class < end_boundary) {
     visitor.VisitRoot(
         reinterpret_cast<mirror::CompressedReference<mirror::Object>*>(declaring_class));
     declaring_class += kFieldSize;
   }
 }

 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, ReadBarrierOption kReadBarrierOption>
 inline ObjPtr<MirrorType> ArtField::GetObj(ObjPtr<mirror::Object> object) {
   DCHECK(object != nullptr) << PrettyField();
   DCHECK(!IsStatic() ||
          (object == GetDeclaringClass<kReadBarrierOption>()) ||
          !Runtime::Current()->IsStarted());
   if (UNLIKELY(IsVolatile())) {
     return object->GetFieldObjectVolatile<MirrorType, kDefaultVerifyFlags, kReadBarrierOption>(
         GetOffset());
   }
   return object->GetFieldObject<MirrorType, kDefaultVerifyFlags, kReadBarrierOption>(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);
 }

 inline uint16_t ArtField::GetCharacter(ObjPtr<mirror::Object> object) {
   return GetChar(object);
 }

 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);
 }

 inline int32_t ArtField::GetInteger(ObjPtr<mirror::Object> object) {
   return GetInt(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());
 }

 template<ReadBarrierOption kReadBarrierOption>
 inline ObjPtr<mirror::Object> ArtField::GetObject(ObjPtr<mirror::Object> object) {
   DCHECK_EQ(Primitive::kPrimNot, GetTypeAsPrimitiveType()) << PrettyField();
   return GetObj<mirror::Object, kReadBarrierOption>(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, VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
 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.
   ObjPtr<mirror::Class> super_class = klass->GetSuperClass<kVerifyFlags, kReadBarrierOption>();
   return (super_class != nullptr)
       ? FindInstanceFieldWithOffset<kExactOffset, kVerifyFlags, kReadBarrierOption>(
           super_class, 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_
	/*
	* 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 HIDDEN {

	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>();
	}

	// We are only ever allowed to set our own final fields
	inline bool ArtField::CanBeChangedBy(ArtMethod* method) {
	ObjPtr<mirror::Class> declaring_class(GetDeclaringClass());
	ObjPtr<mirror::Class> referring_class(method->GetDeclaringClass());
	return !IsFinal() \|\| (declaring_class == referring_class);
	}

	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);
	}

	template<typename RootVisitorType>
	void ArtField::VisitArrayRoots(RootVisitorType& visitor,
	uint8_t* start_boundary,
	uint8_t* end_boundary,
	LengthPrefixedArray<ArtField>* array) {
	DCHECK_LE(start_boundary, end_boundary);
	DCHECK_NE(array->size(), 0u);
	ArtField* first_field = &array->At(0);
	end_boundary = std::min(end_boundary, reinterpret_cast<uint8_t*>(first_field + array->size()));
	static constexpr size_t kFieldSize = sizeof(ArtField);
	// Confirm the assumption that ArtField size is power of two. It's important
	// as we assume so below (RoundUp).
	static_assert(IsPowerOfTwo(kFieldSize));
	uint8_t* declaring_class =
	reinterpret_cast<uint8_t*>(first_field) + DeclaringClassOffset().Int32Value();
	// Jump to the first class to visit.
	if (declaring_class < start_boundary) {
	declaring_class += RoundUp(start_boundary - declaring_class, kFieldSize);
	}
	while (declaring_class < end_boundary) {
	visitor.VisitRoot(
	reinterpret_cast<mirror::CompressedReference<mirror::Object>*>(declaring_class));
	declaring_class += kFieldSize;
	}
	}

	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, ReadBarrierOption kReadBarrierOption>
	inline ObjPtr<MirrorType> ArtField::GetObj(ObjPtr<mirror::Object> object) {
	DCHECK(object != nullptr) << PrettyField();
	DCHECK(!IsStatic() \|\|
	(object == GetDeclaringClass<kReadBarrierOption>()) \|\|
	!Runtime::Current()->IsStarted());
	if (UNLIKELY(IsVolatile())) {
	return object->GetFieldObjectVolatile<MirrorType, kDefaultVerifyFlags, kReadBarrierOption>(
	GetOffset());
	}
	return object->GetFieldObject<MirrorType, kDefaultVerifyFlags, kReadBarrierOption>(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);
	}

	inline uint16_t ArtField::GetCharacter(ObjPtr<mirror::Object> object) {
	return GetChar(object);
	}

	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);
	}

	inline int32_t ArtField::GetInteger(ObjPtr<mirror::Object> object) {
	return GetInt(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());
	}

	template<ReadBarrierOption kReadBarrierOption>
	inline ObjPtr<mirror::Object> ArtField::GetObject(ObjPtr<mirror::Object> object) {
	DCHECK_EQ(Primitive::kPrimNot, GetTypeAsPrimitiveType()) << PrettyField();
	return GetObj<mirror::Object, kReadBarrierOption>(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, VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
	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.
	ObjPtr<mirror::Class> super_class = klass->GetSuperClass<kVerifyFlags, kReadBarrierOption>();
	return (super_class != nullptr)
	? FindInstanceFieldWithOffset<kExactOffset, kVerifyFlags, kReadBarrierOption>(
	super_class, 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_