| /* |
| * 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_OBJECT_UTILS_H_ |
| #define ART_RUNTIME_OBJECT_UTILS_H_ |
| |
| #include "class_linker-inl.h" |
| #include "dex_file.h" |
| #include "monitor.h" |
| #include "mirror/art_field.h" |
| #include "mirror/art_method.h" |
| #include "mirror/class.h" |
| #include "mirror/dex_cache.h" |
| #include "mirror/iftable.h" |
| #include "mirror/string.h" |
| |
| #include "runtime.h" |
| #include "sirt_ref.h" |
| |
| #include <string> |
| |
| namespace art { |
| |
| class ObjectLock { |
| public: |
| explicit ObjectLock(Thread* self, mirror::Object* object) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
| : self_(self), obj_(object) { |
| CHECK(object != NULL); |
| obj_->MonitorEnter(self_); |
| } |
| |
| ~ObjectLock() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| obj_->MonitorExit(self_); |
| } |
| |
| void WaitIgnoringInterrupts() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| Monitor::Wait(self_, obj_, 0, 0, false, kWaiting); |
| } |
| |
| void Notify() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| obj_->Notify(self_); |
| } |
| |
| void NotifyAll() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| obj_->NotifyAll(self_); |
| } |
| |
| private: |
| Thread* const self_; |
| mirror::Object* obj_; |
| DISALLOW_COPY_AND_ASSIGN(ObjectLock); |
| }; |
| |
| class ClassHelper { |
| public: |
| ClassHelper(const mirror::Class* c = NULL, ClassLinker* l = NULL) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
| : class_linker_(l), |
| dex_cache_(NULL), |
| dex_file_(NULL), |
| interface_type_list_(NULL), |
| klass_(NULL) { |
| if (c != NULL) { |
| ChangeClass(c); |
| } |
| } |
| |
| void ChangeClass(const mirror::Class* new_c) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| CHECK(new_c != NULL) << "klass_=" << klass_; // Log what we were changing from if any |
| CHECK(new_c->IsClass()) << "new_c=" << new_c; |
| if (dex_cache_ != NULL) { |
| mirror::DexCache* new_c_dex_cache = new_c->GetDexCache(); |
| if (new_c_dex_cache != dex_cache_) { |
| dex_cache_ = new_c_dex_cache; |
| dex_file_ = NULL; |
| } |
| } |
| klass_ = new_c; |
| interface_type_list_ = NULL; |
| } |
| |
| // The returned const char* is only guaranteed to be valid for the lifetime of the ClassHelper. |
| // If you need it longer, copy it into a std::string. |
| const char* GetDescriptor() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| CHECK(klass_ != NULL); |
| if (UNLIKELY(klass_->IsArrayClass())) { |
| return GetArrayDescriptor(); |
| } else if (UNLIKELY(klass_->IsPrimitive())) { |
| return Primitive::Descriptor(klass_->GetPrimitiveType()); |
| } else if (UNLIKELY(klass_->IsProxyClass())) { |
| descriptor_ = GetClassLinker()->GetDescriptorForProxy(klass_); |
| return descriptor_.c_str(); |
| } else { |
| const DexFile& dex_file = GetDexFile(); |
| const DexFile::TypeId& type_id = dex_file.GetTypeId(GetClassDef()->class_idx_); |
| return dex_file.GetTypeDescriptor(type_id); |
| } |
| } |
| |
| StringPiece GetDescriptorAsStringPiece() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| CHECK(klass_ != NULL); |
| if (UNLIKELY(klass_->IsArrayClass() || klass_->IsPrimitive() || klass_->IsProxyClass())) { |
| return StringPiece(GetDescriptor()); |
| } else { |
| const DexFile& dex_file = GetDexFile(); |
| const DexFile::TypeId& type_id = dex_file.GetTypeId(GetClassDef()->class_idx_); |
| return dex_file.StringDataAsStringPieceByIdx(type_id.descriptor_idx_); |
| } |
| } |
| |
| const char* GetArrayDescriptor() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| std::string result("["); |
| const mirror::Class* saved_klass = klass_; |
| CHECK(saved_klass != NULL); |
| ChangeClass(klass_->GetComponentType()); |
| result += GetDescriptor(); |
| ChangeClass(saved_klass); |
| descriptor_ = result; |
| return descriptor_.c_str(); |
| } |
| |
| const DexFile::ClassDef* GetClassDef() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| DCHECK(klass_ != nullptr); |
| uint16_t class_def_idx = klass_->GetDexClassDefIndex(); |
| if (class_def_idx == DexFile::kDexNoIndex16) { |
| return nullptr; |
| } |
| return &GetDexFile().GetClassDef(class_def_idx); |
| } |
| |
| uint32_t NumDirectInterfaces() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| DCHECK(klass_ != NULL); |
| if (klass_->IsPrimitive()) { |
| return 0; |
| } else if (klass_->IsArrayClass()) { |
| return 2; |
| } else if (klass_->IsProxyClass()) { |
| return klass_->GetIfTable()->GetLength(); |
| } else { |
| const DexFile::TypeList* interfaces = GetInterfaceTypeList(); |
| if (interfaces == NULL) { |
| return 0; |
| } else { |
| return interfaces->Size(); |
| } |
| } |
| } |
| |
| uint16_t GetDirectInterfaceTypeIdx(uint32_t idx) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| DCHECK(klass_ != NULL); |
| DCHECK(!klass_->IsPrimitive()); |
| DCHECK(!klass_->IsArrayClass()); |
| return GetInterfaceTypeList()->GetTypeItem(idx).type_idx_; |
| } |
| |
| mirror::Class* GetDirectInterface(uint32_t idx) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| DCHECK(klass_ != NULL); |
| DCHECK(!klass_->IsPrimitive()); |
| if (klass_->IsArrayClass()) { |
| if (idx == 0) { |
| return GetClassLinker()->FindSystemClass("Ljava/lang/Cloneable;"); |
| } else { |
| DCHECK_EQ(1U, idx); |
| return GetClassLinker()->FindSystemClass("Ljava/io/Serializable;"); |
| } |
| } else if (klass_->IsProxyClass()) { |
| return klass_->GetIfTable()->GetInterface(idx); |
| } else { |
| uint16_t type_idx = GetDirectInterfaceTypeIdx(idx); |
| mirror::Class* interface = GetDexCache()->GetResolvedType(type_idx); |
| if (interface == NULL) { |
| interface = GetClassLinker()->ResolveType(GetDexFile(), type_idx, klass_); |
| CHECK(interface != NULL || Thread::Current()->IsExceptionPending()); |
| } |
| return interface; |
| } |
| } |
| |
| const char* GetSourceFile() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| std::string descriptor(GetDescriptorAsStringPiece().as_string()); |
| const DexFile& dex_file = GetDexFile(); |
| const DexFile::ClassDef* dex_class_def = GetClassDef(); |
| CHECK(dex_class_def != NULL); |
| return dex_file.GetSourceFile(*dex_class_def); |
| } |
| |
| std::string GetLocation() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| mirror::DexCache* dex_cache = GetDexCache(); |
| if (dex_cache != NULL && !klass_->IsProxyClass()) { |
| return dex_cache->GetLocation()->ToModifiedUtf8(); |
| } else { |
| // Arrays and proxies are generated and have no corresponding dex file location. |
| return "generated class"; |
| } |
| } |
| |
| const DexFile& GetDexFile() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| if (dex_file_ == NULL) { |
| dex_file_ = GetDexCache()->GetDexFile(); |
| } |
| return *dex_file_; |
| } |
| |
| mirror::DexCache* GetDexCache() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| mirror::DexCache* result = dex_cache_; |
| if (result == NULL) { |
| DCHECK(klass_ != NULL); |
| result = klass_->GetDexCache(); |
| dex_cache_ = result; |
| } |
| return result; |
| } |
| |
| private: |
| const DexFile::TypeList* GetInterfaceTypeList() |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| const DexFile::TypeList* result = interface_type_list_; |
| if (result == NULL) { |
| const DexFile::ClassDef* class_def = GetClassDef(); |
| if (class_def != NULL) { |
| result = GetDexFile().GetInterfacesList(*class_def); |
| interface_type_list_ = result; |
| } |
| } |
| return result; |
| } |
| |
| ClassLinker* GetClassLinker() { |
| ClassLinker* result = class_linker_; |
| if (result == NULL) { |
| result = Runtime::Current()->GetClassLinker(); |
| class_linker_ = result; |
| } |
| return result; |
| } |
| |
| ClassLinker* class_linker_; |
| mirror::DexCache* dex_cache_; |
| const DexFile* dex_file_; |
| const DexFile::TypeList* interface_type_list_; |
| const mirror::Class* klass_; |
| std::string descriptor_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ClassHelper); |
| }; |
| |
| class FieldHelper { |
| public: |
| FieldHelper() : class_linker_(NULL), dex_cache_(NULL), dex_file_(NULL), field_(NULL) {} |
| explicit FieldHelper(const mirror::ArtField* f) : class_linker_(NULL), dex_cache_(NULL), dex_file_(NULL), field_(f) {} |
| FieldHelper(const mirror::ArtField* f, ClassLinker* l) |
| : class_linker_(l), dex_cache_(NULL), dex_file_(NULL), field_(f) {} |
| |
| void ChangeField(const mirror::ArtField* new_f) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| DCHECK(new_f != NULL); |
| if (dex_cache_ != NULL) { |
| mirror::DexCache* new_f_dex_cache = new_f->GetDeclaringClass()->GetDexCache(); |
| if (new_f_dex_cache != dex_cache_) { |
| dex_cache_ = new_f_dex_cache; |
| dex_file_ = NULL; |
| } |
| } |
| field_ = new_f; |
| } |
| |
| const char* GetName() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| uint32_t field_index = field_->GetDexFieldIndex(); |
| if (UNLIKELY(field_->GetDeclaringClass()->IsProxyClass())) { |
| DCHECK(field_->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)); |
| } |
| |
| StringPiece GetNameAsStringPiece() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| uint32_t field_index = field_->GetDexFieldIndex(); |
| if (UNLIKELY(field_->GetDeclaringClass()->IsProxyClass())) { |
| return StringPiece(GetName()); |
| } |
| const DexFile& dex_file = GetDexFile(); |
| const DexFile::FieldId& field_id = dex_file.GetFieldId(field_index); |
| return dex_file.StringDataAsStringPieceByIdx(field_id.name_idx_); |
| } |
| |
| mirror::Class* GetType(bool resolve = true) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| uint32_t field_index = field_->GetDexFieldIndex(); |
| if (UNLIKELY(field_->GetDeclaringClass()->IsProxyClass())) { |
| return GetClassLinker()->FindSystemClass(GetTypeDescriptor()); |
| } |
| const DexFile& dex_file = GetDexFile(); |
| const DexFile::FieldId& field_id = dex_file.GetFieldId(field_index); |
| mirror::Class* type = GetDexCache()->GetResolvedType(field_id.type_idx_); |
| if (resolve && (type == NULL)) { |
| type = GetClassLinker()->ResolveType(field_id.type_idx_, field_); |
| CHECK(type != NULL || Thread::Current()->IsExceptionPending()); |
| } |
| return type; |
| } |
| |
| const char* GetTypeDescriptor() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| uint32_t field_index = field_->GetDexFieldIndex(); |
| if (UNLIKELY(field_->GetDeclaringClass()->IsProxyClass())) { |
| DCHECK(field_->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 DexFile::FieldId& field_id = dex_file.GetFieldId(field_index); |
| return dex_file.GetFieldTypeDescriptor(field_id); |
| } |
| |
| StringPiece GetTypeDescriptorAsStringPiece() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| uint32_t field_index = field_->GetDexFieldIndex(); |
| if (UNLIKELY(field_->GetDeclaringClass()->IsProxyClass())) { |
| return StringPiece(GetTypeDescriptor()); |
| } |
| const DexFile& dex_file = GetDexFile(); |
| const DexFile::FieldId& field_id = dex_file.GetFieldId(field_index); |
| const DexFile::TypeId& type_id = dex_file.GetTypeId(field_id.type_idx_); |
| return dex_file.StringDataAsStringPieceByIdx(type_id.descriptor_idx_); |
| } |
| |
| Primitive::Type GetTypeAsPrimitiveType() |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| return Primitive::GetType(GetTypeDescriptor()[0]); |
| } |
| |
| bool IsPrimitiveType() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| Primitive::Type type = GetTypeAsPrimitiveType(); |
| return type != Primitive::kPrimNot; |
| } |
| |
| size_t FieldSize() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| Primitive::Type type = GetTypeAsPrimitiveType(); |
| return Primitive::FieldSize(type); |
| } |
| |
| // The returned const char* is only guaranteed to be valid for the lifetime of the FieldHelper. |
| // If you need it longer, copy it into a std::string. |
| const char* GetDeclaringClassDescriptor() |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| uint32_t field_index = field_->GetDexFieldIndex(); |
| if (UNLIKELY(field_->GetDeclaringClass()->IsProxyClass())) { |
| DCHECK(field_->IsStatic()); |
| DCHECK_LT(field_index, 2U); |
| // 0 == Class[] interfaces; 1 == Class[][] throws; |
| ClassHelper kh(field_->GetDeclaringClass()); |
| declaring_class_descriptor_ = kh.GetDescriptorAsStringPiece().as_string(); |
| return declaring_class_descriptor_.c_str(); |
| } |
| const DexFile& dex_file = GetDexFile(); |
| const DexFile::FieldId& field_id = dex_file.GetFieldId(field_index); |
| return dex_file.GetFieldDeclaringClassDescriptor(field_id); |
| } |
| |
| private: |
| mirror::DexCache* GetDexCache() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| mirror::DexCache* result = dex_cache_; |
| if (result == NULL) { |
| result = field_->GetDeclaringClass()->GetDexCache(); |
| dex_cache_ = result; |
| } |
| return result; |
| } |
| ClassLinker* GetClassLinker() { |
| ClassLinker* result = class_linker_; |
| if (result == NULL) { |
| result = Runtime::Current()->GetClassLinker(); |
| class_linker_ = result; |
| } |
| return result; |
| } |
| const DexFile& GetDexFile() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| if (dex_file_ == NULL) { |
| dex_file_ = GetDexCache()->GetDexFile(); |
| } |
| return *dex_file_; |
| } |
| |
| ClassLinker* class_linker_; |
| mirror::DexCache* dex_cache_; |
| const DexFile* dex_file_; |
| const mirror::ArtField* field_; |
| std::string declaring_class_descriptor_; |
| |
| DISALLOW_COPY_AND_ASSIGN(FieldHelper); |
| }; |
| |
| class MethodHelper { |
| public: |
| MethodHelper() |
| : class_linker_(NULL), dex_cache_(NULL), dex_file_(NULL), method_(NULL), shorty_(NULL), |
| shorty_len_(0) {} |
| |
| explicit MethodHelper(const mirror::ArtMethod* m) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
| : class_linker_(NULL), dex_cache_(NULL), dex_file_(NULL), method_(NULL), shorty_(NULL), |
| shorty_len_(0) { |
| SetMethod(m); |
| } |
| |
| MethodHelper(const mirror::ArtMethod* m, ClassLinker* l) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
| : class_linker_(l), dex_cache_(NULL), dex_file_(NULL), method_(NULL), shorty_(NULL), |
| shorty_len_(0) { |
| SetMethod(m); |
| } |
| |
| void ChangeMethod(mirror::ArtMethod* new_m) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| DCHECK(new_m != NULL); |
| if (dex_cache_ != NULL) { |
| mirror::Class* klass = new_m->GetDeclaringClass(); |
| if (klass->IsProxyClass()) { |
| dex_cache_ = NULL; |
| dex_file_ = NULL; |
| } else { |
| mirror::DexCache* new_m_dex_cache = klass->GetDexCache(); |
| if (new_m_dex_cache != dex_cache_) { |
| dex_cache_ = new_m_dex_cache; |
| dex_file_ = NULL; |
| } |
| } |
| } |
| SetMethod(new_m); |
| shorty_ = NULL; |
| } |
| |
| const mirror::ArtMethod* GetMethod() const { |
| return method_; |
| } |
| |
| const char* GetName() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| const DexFile& dex_file = GetDexFile(); |
| uint32_t dex_method_idx = method_->GetDexMethodIndex(); |
| if (LIKELY(dex_method_idx != DexFile::kDexNoIndex)) { |
| return dex_file.GetMethodName(dex_file.GetMethodId(dex_method_idx)); |
| } else { |
| Runtime* runtime = Runtime::Current(); |
| if (method_ == runtime->GetResolutionMethod()) { |
| return "<runtime internal resolution method>"; |
| } else if (method_ == runtime->GetCalleeSaveMethod(Runtime::kSaveAll)) { |
| return "<runtime internal callee-save all registers method>"; |
| } else if (method_ == runtime->GetCalleeSaveMethod(Runtime::kRefsOnly)) { |
| return "<runtime internal callee-save reference registers method>"; |
| } else if (method_ == runtime->GetCalleeSaveMethod(Runtime::kRefsAndArgs)) { |
| return "<runtime internal callee-save reference and argument registers method>"; |
| } else { |
| return "<unknown runtime internal method>"; |
| } |
| } |
| } |
| |
| StringPiece GetNameAsStringPiece() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| const DexFile& dex_file = GetDexFile(); |
| uint32_t dex_method_idx = method_->GetDexMethodIndex(); |
| if (UNLIKELY(dex_method_idx == DexFile::kDexNoIndex)) { |
| return StringPiece(GetName()); |
| } |
| const DexFile::MethodId& method_id = dex_file.GetMethodId(dex_method_idx); |
| return dex_file.StringDataAsStringPieceByIdx(method_id.name_idx_); |
| } |
| |
| mirror::String* GetNameAsString() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| const DexFile& dex_file = GetDexFile(); |
| uint32_t dex_method_idx = method_->GetDexMethodIndex(); |
| const DexFile::MethodId& method_id = dex_file.GetMethodId(dex_method_idx); |
| return GetClassLinker()->ResolveString(dex_file, method_id.name_idx_, GetDexCache()); |
| } |
| |
| const char* GetShorty() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| const char* result = shorty_; |
| if (result == NULL) { |
| const DexFile& dex_file = GetDexFile(); |
| result = dex_file.GetMethodShorty(dex_file.GetMethodId(method_->GetDexMethodIndex()), |
| &shorty_len_); |
| shorty_ = result; |
| } |
| return result; |
| } |
| |
| uint32_t GetShortyLength() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| if (shorty_ == NULL) { |
| GetShorty(); |
| } |
| return shorty_len_; |
| } |
| |
| const std::string GetSignature() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| const DexFile& dex_file = GetDexFile(); |
| uint32_t dex_method_idx = method_->GetDexMethodIndex(); |
| if (dex_method_idx != DexFile::kDexNoIndex) { |
| return dex_file.GetMethodSignature(dex_file.GetMethodId(dex_method_idx)); |
| } else { |
| return "<no signature>"; |
| } |
| } |
| |
| const DexFile::ProtoId& GetPrototype() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| const DexFile& dex_file = GetDexFile(); |
| return dex_file.GetMethodPrototype(dex_file.GetMethodId(method_->GetDexMethodIndex())); |
| } |
| |
| const DexFile::TypeList* GetParameterTypeList() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| const DexFile::ProtoId& proto = GetPrototype(); |
| return GetDexFile().GetProtoParameters(proto); |
| } |
| |
| mirror::Class* GetReturnType() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| const DexFile& dex_file = GetDexFile(); |
| const DexFile::MethodId& method_id = dex_file.GetMethodId(method_->GetDexMethodIndex()); |
| const DexFile::ProtoId& proto_id = dex_file.GetMethodPrototype(method_id); |
| uint16_t return_type_idx = proto_id.return_type_idx_; |
| return GetClassFromTypeIdx(return_type_idx); |
| } |
| |
| const char* GetReturnTypeDescriptor() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| const DexFile& dex_file = GetDexFile(); |
| const DexFile::MethodId& method_id = dex_file.GetMethodId(method_->GetDexMethodIndex()); |
| const DexFile::ProtoId& proto_id = dex_file.GetMethodPrototype(method_id); |
| uint16_t return_type_idx = proto_id.return_type_idx_; |
| return dex_file.GetTypeDescriptor(dex_file.GetTypeId(return_type_idx)); |
| } |
| |
| int32_t GetLineNumFromDexPC(uint32_t dex_pc) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| if (dex_pc == DexFile::kDexNoIndex) { |
| return method_->IsNative() ? -2 : -1; |
| } else { |
| const DexFile& dex_file = GetDexFile(); |
| return dex_file.GetLineNumFromPC(method_, dex_pc); |
| } |
| } |
| |
| const char* GetDeclaringClassDescriptor() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| const DexFile& dex_file = GetDexFile(); |
| uint32_t dex_method_idx = method_->GetDexMethodIndex(); |
| if (UNLIKELY(dex_method_idx == DexFile::kDexNoIndex)) { |
| return "<runtime method>"; |
| } |
| return dex_file.GetMethodDeclaringClassDescriptor(dex_file.GetMethodId(dex_method_idx)); |
| } |
| |
| StringPiece GetDeclaringClassDescriptorAsStringPiece() |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| const DexFile& dex_file = GetDexFile(); |
| uint32_t dex_method_idx = method_->GetDexMethodIndex(); |
| if (UNLIKELY(dex_method_idx == DexFile::kDexNoIndex)) { |
| return StringPiece("<runtime method>"); |
| } |
| const DexFile::MethodId& mid = dex_file.GetMethodId(dex_method_idx); |
| const DexFile::TypeId& type_id = dex_file.GetTypeId(mid.class_idx_); |
| return dex_file.StringDataAsStringPieceByIdx(type_id.descriptor_idx_); |
| } |
| |
| const char* GetDeclaringClassSourceFile() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| return ClassHelper(method_->GetDeclaringClass()).GetSourceFile(); |
| } |
| |
| uint16_t GetClassDefIndex() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| return method_->GetDeclaringClass()->GetDexClassDefIndex(); |
| } |
| |
| const DexFile::ClassDef& GetClassDef() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| return GetDexFile().GetClassDef(GetClassDefIndex()); |
| } |
| |
| mirror::ClassLoader* GetClassLoader() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| return method_->GetDeclaringClass()->GetClassLoader(); |
| } |
| |
| bool IsStatic() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| return method_->IsStatic(); |
| } |
| |
| bool IsClassInitializer() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| return IsStatic() && GetNameAsStringPiece() == "<clinit>"; |
| } |
| |
| size_t NumArgs() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| // "1 +" because the first in Args is the receiver. |
| // "- 1" because we don't count the return type. |
| return (IsStatic() ? 0 : 1) + GetShortyLength() - 1; |
| } |
| |
| // Get the primitive type associated with the given parameter. |
| Primitive::Type GetParamPrimitiveType(size_t param) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| CHECK_LT(param, NumArgs()); |
| if (IsStatic()) { |
| param++; // 0th argument must skip return value at start of the shorty |
| } else if (param == 0) { |
| return Primitive::kPrimNot; |
| } |
| return Primitive::GetType(GetShorty()[param]); |
| } |
| |
| // Is the specified parameter a long or double, where parameter 0 is 'this' for instance methods. |
| bool IsParamALongOrDouble(size_t param) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| Primitive::Type type = GetParamPrimitiveType(param); |
| return type == Primitive::kPrimLong || type == Primitive::kPrimDouble; |
| } |
| |
| // Is the specified parameter a reference, where parameter 0 is 'this' for instance methods. |
| bool IsParamAReference(size_t param) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| return GetParamPrimitiveType(param) == Primitive::kPrimNot; |
| } |
| |
| bool HasSameNameAndSignature(MethodHelper* other) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| const DexFile& dex_file = GetDexFile(); |
| const DexFile::MethodId& mid = dex_file.GetMethodId(method_->GetDexMethodIndex()); |
| if (GetDexCache() == other->GetDexCache()) { |
| const DexFile::MethodId& other_mid = |
| dex_file.GetMethodId(other->method_->GetDexMethodIndex()); |
| return mid.name_idx_ == other_mid.name_idx_ && mid.proto_idx_ == other_mid.proto_idx_; |
| } |
| const DexFile& other_dex_file = other->GetDexFile(); |
| const DexFile::MethodId& other_mid = |
| other_dex_file.GetMethodId(other->method_->GetDexMethodIndex()); |
| if (dex_file.StringDataAsStringPieceByIdx(mid.name_idx_) != |
| other_dex_file.StringDataAsStringPieceByIdx(other_mid.name_idx_)) { |
| return false; // Name mismatch. |
| } |
| const DexFile::ProtoId& proto_id = dex_file.GetMethodPrototype(mid); |
| const DexFile::ProtoId& other_proto_id = other_dex_file.GetMethodPrototype(other_mid); |
| if (dex_file.StringDataAsStringPieceByIdx(proto_id.shorty_idx_) != |
| other_dex_file.StringDataAsStringPieceByIdx(other_proto_id.shorty_idx_)) { |
| return false; // Shorty mismatch. |
| } |
| const DexFile::TypeId& return_type_id = dex_file.GetTypeId(proto_id.return_type_idx_); |
| const DexFile::TypeId& other_return_type_id = |
| other_dex_file.GetTypeId(other_proto_id.return_type_idx_); |
| if (dex_file.StringDataAsStringPieceByIdx(return_type_id.descriptor_idx_) != |
| other_dex_file.StringDataAsStringPieceByIdx(other_return_type_id.descriptor_idx_)) { |
| return false; // Return type mismatch. |
| } |
| const DexFile::TypeList* params = dex_file.GetProtoParameters(proto_id); |
| const DexFile::TypeList* other_params = other_dex_file.GetProtoParameters(other_proto_id); |
| if (params == nullptr) { |
| return other_params == nullptr; // Check both lists are empty. |
| } |
| if (other_params == nullptr) { |
| return false; // Parameter list size mismatch. |
| } |
| uint32_t params_size = params->Size(); |
| uint32_t other_params_size = other_params->Size(); |
| if (params_size != other_params_size) { |
| return false; // Parameter list size mismatch. |
| } |
| for (uint32_t i = 0; i < params_size; ++i) { |
| const DexFile::TypeId& param_id = dex_file.GetTypeId(params->GetTypeItem(i).type_idx_); |
| const DexFile::TypeId& other_param_id = |
| other_dex_file.GetTypeId(other_params->GetTypeItem(i).type_idx_); |
| if (dex_file.StringDataAsStringPieceByIdx(param_id.descriptor_idx_) != |
| other_dex_file.StringDataAsStringPieceByIdx(other_param_id.descriptor_idx_)) { |
| return false; // Parameter type mismatch. |
| } |
| } |
| return true; |
| } |
| |
| const DexFile::CodeItem* GetCodeItem() |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| return GetDexFile().GetCodeItem(method_->GetCodeItemOffset()); |
| } |
| |
| bool IsResolvedTypeIdx(uint16_t type_idx) const |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| return method_->GetDexCacheResolvedTypes()->Get(type_idx) != NULL; |
| } |
| |
| mirror::Class* GetClassFromTypeIdx(uint16_t type_idx) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| mirror::Class* type = method_->GetDexCacheResolvedTypes()->Get(type_idx); |
| if (type == NULL) { |
| type = GetClassLinker()->ResolveType(type_idx, method_); |
| CHECK(type != NULL || Thread::Current()->IsExceptionPending()); |
| } |
| return type; |
| } |
| |
| const char* GetTypeDescriptorFromTypeIdx(uint16_t type_idx) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| const DexFile& dex_file = GetDexFile(); |
| return dex_file.GetTypeDescriptor(dex_file.GetTypeId(type_idx)); |
| } |
| |
| mirror::Class* GetDexCacheResolvedType(uint16_t type_idx) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| return method_->GetDexCacheResolvedTypes()->Get(type_idx); |
| } |
| |
| const DexFile& GetDexFile() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| const DexFile* result = dex_file_; |
| if (result == NULL) { |
| const mirror::DexCache* dex_cache = GetDexCache(); |
| result = dex_file_ = dex_cache->GetDexFile(); |
| } |
| return *result; |
| } |
| |
| mirror::DexCache* GetDexCache() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| mirror::DexCache* result = dex_cache_; |
| if (result == NULL) { |
| mirror::Class* klass = method_->GetDeclaringClass(); |
| result = klass->GetDexCache(); |
| dex_cache_ = result; |
| } |
| return result; |
| } |
| |
| mirror::String* ResolveString(uint32_t string_idx) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| mirror::String* s = method_->GetDexCacheStrings()->Get(string_idx); |
| if (UNLIKELY(s == NULL)) { |
| s = GetClassLinker()->ResolveString(GetDexFile(), string_idx, GetDexCache()); |
| } |
| return s; |
| } |
| |
| private: |
| // Set the method_ field, for proxy methods looking up the interface method via the resolved |
| // methods table. |
| void SetMethod(const mirror::ArtMethod* method) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| if (method != NULL) { |
| mirror::Class* klass = method->GetDeclaringClass(); |
| if (UNLIKELY(klass->IsProxyClass())) { |
| mirror::ArtMethod* interface_method = |
| method->GetDexCacheResolvedMethods()->Get(method->GetDexMethodIndex()); |
| DCHECK(interface_method != NULL); |
| DCHECK(interface_method == GetClassLinker()->FindMethodForProxy(klass, method)); |
| method = interface_method; |
| } |
| } |
| method_ = method; |
| } |
| |
| ClassLinker* GetClassLinker() { |
| ClassLinker* result = class_linker_; |
| if (result == NULL) { |
| result = Runtime::Current()->GetClassLinker(); |
| class_linker_ = result; |
| } |
| return result; |
| } |
| |
| ClassLinker* class_linker_; |
| mirror::DexCache* dex_cache_; |
| const DexFile* dex_file_; |
| const mirror::ArtMethod* method_; |
| const char* shorty_; |
| uint32_t shorty_len_; |
| |
| DISALLOW_COPY_AND_ASSIGN(MethodHelper); |
| }; |
| |
| } // namespace art |
| |
| #endif // ART_RUNTIME_OBJECT_UTILS_H_ |