| /* |
| * 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_METHOD_INL_H_ |
| #define ART_RUNTIME_ART_METHOD_INL_H_ |
| |
| #include "art_method.h" |
| |
| #include "art_field.h" |
| #include "base/logging.h" |
| #include "class_linker-inl.h" |
| #include "common_throws.h" |
| #include "dex_file.h" |
| #include "dex_file-inl.h" |
| #include "gc_root-inl.h" |
| #include "jit/profiling_info.h" |
| #include "mirror/class-inl.h" |
| #include "mirror/dex_cache-inl.h" |
| #include "mirror/object-inl.h" |
| #include "mirror/object_array.h" |
| #include "oat.h" |
| #include "quick/quick_method_frame_info.h" |
| #include "read_barrier-inl.h" |
| #include "runtime-inl.h" |
| #include "scoped_thread_state_change.h" |
| #include "thread-inl.h" |
| #include "utils.h" |
| |
| namespace art { |
| |
| inline mirror::Class* ArtMethod::GetDeclaringClassUnchecked() { |
| GcRootSource gc_root_source(this); |
| return declaring_class_.Read(&gc_root_source); |
| } |
| |
| inline mirror::Class* ArtMethod::GetDeclaringClassNoBarrier() { |
| return declaring_class_.Read<kWithoutReadBarrier>(); |
| } |
| |
| inline mirror::Class* ArtMethod::GetDeclaringClass() { |
| mirror::Class* result = GetDeclaringClassUnchecked(); |
| if (kIsDebugBuild) { |
| if (!IsRuntimeMethod()) { |
| CHECK(result != nullptr) << this; |
| CHECK(result->IsIdxLoaded() || result->IsErroneous()) |
| << result->GetStatus() << " " << PrettyClass(result); |
| } else { |
| CHECK(result == nullptr) << this; |
| } |
| } |
| return result; |
| } |
| |
| inline void ArtMethod::SetDeclaringClass(mirror::Class* new_declaring_class) { |
| declaring_class_ = GcRoot<mirror::Class>(new_declaring_class); |
| } |
| |
| inline bool ArtMethod::CASDeclaringClass(mirror::Class* expected_class, |
| mirror::Class* desired_class) { |
| GcRoot<mirror::Class> expected_root(expected_class); |
| GcRoot<mirror::Class> desired_root(desired_class); |
| return reinterpret_cast<Atomic<GcRoot<mirror::Class>>*>(&declaring_class_)-> |
| CompareExchangeStrongSequentiallyConsistent( |
| expected_root, desired_root); |
| } |
| |
| // AssertSharedHeld doesn't work in GetAccessFlags, so use a NO_THREAD_SAFETY_ANALYSIS helper. |
| // TODO: Figure out why ASSERT_SHARED_CAPABILITY doesn't work. |
| ALWAYS_INLINE |
| static inline void DoGetAccessFlagsHelper(ArtMethod* method) NO_THREAD_SAFETY_ANALYSIS { |
| CHECK(method->IsRuntimeMethod() || method->GetDeclaringClass()->IsIdxLoaded() || |
| method->GetDeclaringClass()->IsErroneous()); |
| } |
| |
| inline uint32_t ArtMethod::GetAccessFlags() { |
| if (kIsDebugBuild) { |
| Thread* self = Thread::Current(); |
| if (!Locks::mutator_lock_->IsSharedHeld(self)) { |
| ScopedObjectAccess soa(self); |
| CHECK(IsRuntimeMethod() || GetDeclaringClass()->IsIdxLoaded() || |
| GetDeclaringClass()->IsErroneous()); |
| } else { |
| // We cannot use SOA in this case. We might be holding the lock, but may not be in the |
| // runnable state (e.g., during GC). |
| Locks::mutator_lock_->AssertSharedHeld(self); |
| DoGetAccessFlagsHelper(this); |
| } |
| } |
| return access_flags_; |
| } |
| |
| inline uint16_t ArtMethod::GetMethodIndex() { |
| DCHECK(IsRuntimeMethod() || GetDeclaringClass()->IsResolved() || |
| GetDeclaringClass()->IsErroneous()); |
| return method_index_; |
| } |
| |
| inline uint16_t ArtMethod::GetMethodIndexDuringLinking() { |
| return method_index_; |
| } |
| |
| inline uint32_t ArtMethod::GetDexMethodIndex() { |
| DCHECK(IsRuntimeMethod() || GetDeclaringClass()->IsIdxLoaded() || |
| GetDeclaringClass()->IsErroneous()); |
| return dex_method_index_; |
| } |
| |
| inline ArtMethod** ArtMethod::GetDexCacheResolvedMethods(size_t pointer_size) { |
| return GetNativePointer<ArtMethod**>(DexCacheResolvedMethodsOffset(pointer_size), |
| pointer_size); |
| } |
| |
| inline ArtMethod* ArtMethod::GetDexCacheResolvedMethod(uint16_t method_index, size_t ptr_size) { |
| // NOTE: Unchecked, i.e. not throwing AIOOB. We don't even know the length here |
| // without accessing the DexCache and we don't want to do that in release build. |
| DCHECK_LT(method_index, |
| GetInterfaceMethodIfProxy(ptr_size)->GetDeclaringClass() |
| ->GetDexCache()->NumResolvedMethods()); |
| ArtMethod* method = mirror::DexCache::GetElementPtrSize(GetDexCacheResolvedMethods(ptr_size), |
| method_index, |
| ptr_size); |
| if (LIKELY(method != nullptr)) { |
| auto* declaring_class = method->GetDeclaringClass(); |
| if (LIKELY(declaring_class == nullptr || !declaring_class->IsErroneous())) { |
| return method; |
| } |
| } |
| return nullptr; |
| } |
| |
| inline void ArtMethod::SetDexCacheResolvedMethod(uint16_t method_index, ArtMethod* new_method, |
| size_t ptr_size) { |
| // NOTE: Unchecked, i.e. not throwing AIOOB. We don't even know the length here |
| // without accessing the DexCache and we don't want to do that in release build. |
| DCHECK_LT(method_index, |
| GetInterfaceMethodIfProxy(ptr_size)->GetDeclaringClass() |
| ->GetDexCache()->NumResolvedMethods()); |
| DCHECK(new_method == nullptr || new_method->GetDeclaringClass() != nullptr); |
| mirror::DexCache::SetElementPtrSize(GetDexCacheResolvedMethods(ptr_size), |
| method_index, |
| new_method, |
| ptr_size); |
| } |
| |
| inline bool ArtMethod::HasDexCacheResolvedMethods(size_t pointer_size) { |
| return GetDexCacheResolvedMethods(pointer_size) != nullptr; |
| } |
| |
| inline bool ArtMethod::HasSameDexCacheResolvedMethods(ArtMethod** other_cache, |
| size_t pointer_size) { |
| return GetDexCacheResolvedMethods(pointer_size) == other_cache; |
| } |
| |
| inline bool ArtMethod::HasSameDexCacheResolvedMethods(ArtMethod* other, size_t pointer_size) { |
| return GetDexCacheResolvedMethods(pointer_size) == |
| other->GetDexCacheResolvedMethods(pointer_size); |
| } |
| |
| inline GcRoot<mirror::Class>* ArtMethod::GetDexCacheResolvedTypes(size_t pointer_size) { |
| return GetNativePointer<GcRoot<mirror::Class>*>(DexCacheResolvedTypesOffset(pointer_size), |
| pointer_size); |
| } |
| |
| template <bool kWithCheck> |
| inline mirror::Class* ArtMethod::GetDexCacheResolvedType(uint32_t type_index, size_t ptr_size) { |
| if (kWithCheck) { |
| mirror::DexCache* dex_cache = |
| GetInterfaceMethodIfProxy(ptr_size)->GetDeclaringClass()->GetDexCache(); |
| if (UNLIKELY(type_index >= dex_cache->NumResolvedTypes())) { |
| ThrowArrayIndexOutOfBoundsException(type_index, dex_cache->NumResolvedTypes()); |
| return nullptr; |
| } |
| } |
| mirror::Class* klass = GetDexCacheResolvedTypes(ptr_size)[type_index].Read(); |
| return (klass != nullptr && !klass->IsErroneous()) ? klass : nullptr; |
| } |
| |
| inline bool ArtMethod::HasDexCacheResolvedTypes(size_t pointer_size) { |
| return GetDexCacheResolvedTypes(pointer_size) != nullptr; |
| } |
| |
| inline bool ArtMethod::HasSameDexCacheResolvedTypes(GcRoot<mirror::Class>* other_cache, |
| size_t pointer_size) { |
| return GetDexCacheResolvedTypes(pointer_size) == other_cache; |
| } |
| |
| inline bool ArtMethod::HasSameDexCacheResolvedTypes(ArtMethod* other, size_t pointer_size) { |
| return GetDexCacheResolvedTypes(pointer_size) == other->GetDexCacheResolvedTypes(pointer_size); |
| } |
| |
| inline mirror::Class* ArtMethod::GetClassFromTypeIndex(uint16_t type_idx, |
| bool resolve, |
| size_t ptr_size) { |
| mirror::Class* type = GetDexCacheResolvedType(type_idx, ptr_size); |
| if (type == nullptr && resolve) { |
| type = Runtime::Current()->GetClassLinker()->ResolveType(type_idx, this); |
| CHECK(type != nullptr || Thread::Current()->IsExceptionPending()); |
| } |
| return type; |
| } |
| |
| inline bool ArtMethod::CheckIncompatibleClassChange(InvokeType type) { |
| switch (type) { |
| case kStatic: |
| return !IsStatic(); |
| case kDirect: |
| return !IsDirect() || IsStatic(); |
| case kVirtual: { |
| // We have an error if we are direct or a non-default, non-miranda interface method. |
| mirror::Class* methods_class = GetDeclaringClass(); |
| return IsDirect() || (methods_class->IsInterface() && !IsDefault() && !IsMiranda()); |
| } |
| case kSuper: |
| // Constructors and static methods are called with invoke-direct. |
| return IsConstructor() || IsStatic(); |
| case kInterface: { |
| mirror::Class* methods_class = GetDeclaringClass(); |
| return IsDirect() || !(methods_class->IsInterface() || methods_class->IsObjectClass()); |
| } |
| default: |
| LOG(FATAL) << "Unreachable - invocation type: " << type; |
| UNREACHABLE(); |
| } |
| } |
| |
| inline bool ArtMethod::IsRuntimeMethod() { |
| return dex_method_index_ == DexFile::kDexNoIndex; |
| } |
| |
| inline bool ArtMethod::IsCalleeSaveMethod() { |
| if (!IsRuntimeMethod()) { |
| return false; |
| } |
| Runtime* runtime = Runtime::Current(); |
| bool result = false; |
| for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { |
| if (this == runtime->GetCalleeSaveMethod(Runtime::CalleeSaveType(i))) { |
| result = true; |
| break; |
| } |
| } |
| return result; |
| } |
| |
| inline bool ArtMethod::IsResolutionMethod() { |
| bool result = this == Runtime::Current()->GetResolutionMethod(); |
| // Check that if we do think it is phony it looks like the resolution method. |
| DCHECK(!result || IsRuntimeMethod()); |
| return result; |
| } |
| |
| inline bool ArtMethod::IsImtConflictMethod() { |
| bool result = this == Runtime::Current()->GetImtConflictMethod(); |
| // Check that if we do think it is phony it looks like the imt conflict method. |
| DCHECK(!result || IsRuntimeMethod()); |
| return result; |
| } |
| |
| inline bool ArtMethod::IsImtUnimplementedMethod() { |
| bool result = this == Runtime::Current()->GetImtUnimplementedMethod(); |
| // Check that if we do think it is phony it looks like the imt unimplemented method. |
| DCHECK(!result || IsRuntimeMethod()); |
| return result; |
| } |
| |
| inline const DexFile* ArtMethod::GetDexFile() { |
| return GetDexCache()->GetDexFile(); |
| } |
| |
| inline const char* ArtMethod::GetDeclaringClassDescriptor() { |
| uint32_t dex_method_idx = GetDexMethodIndex(); |
| if (UNLIKELY(dex_method_idx == DexFile::kDexNoIndex)) { |
| return "<runtime method>"; |
| } |
| DCHECK(!IsProxyMethod()); |
| const DexFile* dex_file = GetDexFile(); |
| return dex_file->GetMethodDeclaringClassDescriptor(dex_file->GetMethodId(dex_method_idx)); |
| } |
| |
| inline const char* ArtMethod::GetShorty(uint32_t* out_length) { |
| DCHECK(!IsProxyMethod()); |
| const DexFile* dex_file = GetDexFile(); |
| return dex_file->GetMethodShorty(dex_file->GetMethodId(GetDexMethodIndex()), out_length); |
| } |
| |
| inline const Signature ArtMethod::GetSignature() { |
| uint32_t dex_method_idx = GetDexMethodIndex(); |
| if (dex_method_idx != DexFile::kDexNoIndex) { |
| DCHECK(!IsProxyMethod()); |
| const DexFile* dex_file = GetDexFile(); |
| return dex_file->GetMethodSignature(dex_file->GetMethodId(dex_method_idx)); |
| } |
| return Signature::NoSignature(); |
| } |
| |
| inline const char* ArtMethod::GetName() { |
| uint32_t dex_method_idx = GetDexMethodIndex(); |
| if (LIKELY(dex_method_idx != DexFile::kDexNoIndex)) { |
| DCHECK(!IsProxyMethod()); |
| const DexFile* dex_file = GetDexFile(); |
| return dex_file->GetMethodName(dex_file->GetMethodId(dex_method_idx)); |
| } |
| Runtime* const runtime = Runtime::Current(); |
| if (this == runtime->GetResolutionMethod()) { |
| return "<runtime internal resolution method>"; |
| } else if (this == runtime->GetImtConflictMethod()) { |
| return "<runtime internal imt conflict method>"; |
| } else if (this == runtime->GetCalleeSaveMethod(Runtime::kSaveAll)) { |
| return "<runtime internal callee-save all registers method>"; |
| } else if (this == runtime->GetCalleeSaveMethod(Runtime::kRefsOnly)) { |
| return "<runtime internal callee-save reference registers method>"; |
| } else if (this == runtime->GetCalleeSaveMethod(Runtime::kRefsAndArgs)) { |
| return "<runtime internal callee-save reference and argument registers method>"; |
| } else { |
| return "<unknown runtime internal method>"; |
| } |
| } |
| |
| inline const DexFile::CodeItem* ArtMethod::GetCodeItem() { |
| return GetDeclaringClass()->GetDexFile().GetCodeItem(GetCodeItemOffset()); |
| } |
| |
| inline bool ArtMethod::IsResolvedTypeIdx(uint16_t type_idx, size_t ptr_size) { |
| DCHECK(!IsProxyMethod()); |
| return GetDexCacheResolvedType(type_idx, ptr_size) != nullptr; |
| } |
| |
| inline int32_t ArtMethod::GetLineNumFromDexPC(uint32_t dex_pc) { |
| DCHECK(!IsProxyMethod()); |
| if (dex_pc == DexFile::kDexNoIndex) { |
| return IsNative() ? -2 : -1; |
| } |
| return GetDexFile()->GetLineNumFromPC(this, dex_pc); |
| } |
| |
| inline const DexFile::ProtoId& ArtMethod::GetPrototype() { |
| DCHECK(!IsProxyMethod()); |
| const DexFile* dex_file = GetDexFile(); |
| return dex_file->GetMethodPrototype(dex_file->GetMethodId(GetDexMethodIndex())); |
| } |
| |
| inline const DexFile::TypeList* ArtMethod::GetParameterTypeList() { |
| DCHECK(!IsProxyMethod()); |
| const DexFile* dex_file = GetDexFile(); |
| const DexFile::ProtoId& proto = dex_file->GetMethodPrototype( |
| dex_file->GetMethodId(GetDexMethodIndex())); |
| return dex_file->GetProtoParameters(proto); |
| } |
| |
| inline const char* ArtMethod::GetDeclaringClassSourceFile() { |
| DCHECK(!IsProxyMethod()); |
| return GetDeclaringClass()->GetSourceFile(); |
| } |
| |
| inline uint16_t ArtMethod::GetClassDefIndex() { |
| DCHECK(!IsProxyMethod()); |
| return GetDeclaringClass()->GetDexClassDefIndex(); |
| } |
| |
| inline const DexFile::ClassDef& ArtMethod::GetClassDef() { |
| DCHECK(!IsProxyMethod()); |
| return GetDexFile()->GetClassDef(GetClassDefIndex()); |
| } |
| |
| inline const char* ArtMethod::GetReturnTypeDescriptor() { |
| DCHECK(!IsProxyMethod()); |
| const DexFile* dex_file = GetDexFile(); |
| const DexFile::MethodId& method_id = dex_file->GetMethodId(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)); |
| } |
| |
| inline const char* ArtMethod::GetTypeDescriptorFromTypeIdx(uint16_t type_idx) { |
| DCHECK(!IsProxyMethod()); |
| const DexFile* dex_file = GetDexFile(); |
| return dex_file->GetTypeDescriptor(dex_file->GetTypeId(type_idx)); |
| } |
| |
| inline mirror::ClassLoader* ArtMethod::GetClassLoader() { |
| DCHECK(!IsProxyMethod()); |
| return GetDeclaringClass()->GetClassLoader(); |
| } |
| |
| inline mirror::DexCache* ArtMethod::GetDexCache() { |
| DCHECK(!IsProxyMethod()); |
| return GetDeclaringClass()->GetDexCache(); |
| } |
| |
| inline bool ArtMethod::IsProxyMethod() { |
| return GetDeclaringClass()->IsProxyClass(); |
| } |
| |
| inline ArtMethod* ArtMethod::GetInterfaceMethodIfProxy(size_t pointer_size) { |
| if (LIKELY(!IsProxyMethod())) { |
| return this; |
| } |
| mirror::Class* klass = GetDeclaringClass(); |
| ArtMethod* interface_method = mirror::DexCache::GetElementPtrSize( |
| GetDexCacheResolvedMethods(pointer_size), |
| GetDexMethodIndex(), |
| pointer_size); |
| DCHECK(interface_method != nullptr); |
| DCHECK_EQ(interface_method, |
| Runtime::Current()->GetClassLinker()->FindMethodForProxy(klass, this)); |
| return interface_method; |
| } |
| |
| inline void ArtMethod::SetDexCacheResolvedMethods(ArtMethod** new_dex_cache_methods, |
| size_t ptr_size) { |
| SetNativePointer(DexCacheResolvedMethodsOffset(ptr_size), new_dex_cache_methods, ptr_size); |
| } |
| |
| inline void ArtMethod::SetDexCacheResolvedTypes(GcRoot<mirror::Class>* new_dex_cache_types, |
| size_t ptr_size) { |
| SetNativePointer(DexCacheResolvedTypesOffset(ptr_size), new_dex_cache_types, ptr_size); |
| } |
| |
| inline mirror::Class* ArtMethod::GetReturnType(bool resolve, size_t ptr_size) { |
| DCHECK(!IsProxyMethod()); |
| const DexFile* dex_file = GetDexFile(); |
| const DexFile::MethodId& method_id = dex_file->GetMethodId(GetDexMethodIndex()); |
| const DexFile::ProtoId& proto_id = dex_file->GetMethodPrototype(method_id); |
| uint16_t return_type_idx = proto_id.return_type_idx_; |
| mirror::Class* type = GetDexCacheResolvedType(return_type_idx, ptr_size); |
| if (type == nullptr && resolve) { |
| type = Runtime::Current()->GetClassLinker()->ResolveType(return_type_idx, this); |
| CHECK(type != nullptr || Thread::Current()->IsExceptionPending()); |
| } |
| return type; |
| } |
| |
| template<typename RootVisitorType> |
| void ArtMethod::VisitRoots(RootVisitorType& visitor, size_t pointer_size) { |
| ArtMethod* interface_method = nullptr; |
| mirror::Class* klass = declaring_class_.Read(); |
| if (UNLIKELY(klass != nullptr && klass->IsProxyClass())) { |
| // For normal methods, dex cache shortcuts will be visited through the declaring class. |
| // However, for proxies we need to keep the interface method alive, so we visit its roots. |
| interface_method = mirror::DexCache::GetElementPtrSize( |
| GetDexCacheResolvedMethods(pointer_size), |
| GetDexMethodIndex(), |
| pointer_size); |
| DCHECK(interface_method != nullptr); |
| DCHECK_EQ(interface_method, |
| Runtime::Current()->GetClassLinker()->FindMethodForProxy(klass, this)); |
| interface_method->VisitRoots(visitor, pointer_size); |
| } |
| |
| visitor.VisitRootIfNonNull(declaring_class_.AddressWithoutBarrier()); |
| ProfilingInfo* profiling_info = GetProfilingInfo(pointer_size); |
| if (hotness_count_ != 0 && !IsNative() && profiling_info != nullptr) { |
| profiling_info->VisitRoots(visitor); |
| } |
| } |
| |
| template <typename Visitor> |
| inline void ArtMethod::UpdateObjectsForImageRelocation(const Visitor& visitor) { |
| mirror::Class* old_class = GetDeclaringClassNoBarrier(); |
| mirror::Class* new_class = visitor(old_class); |
| if (old_class != new_class) { |
| SetDeclaringClass(new_class); |
| } |
| ArtMethod** old_methods = GetDexCacheResolvedMethods(sizeof(void*)); |
| ArtMethod** new_methods = visitor(old_methods); |
| if (old_methods != new_methods) { |
| SetDexCacheResolvedMethods(new_methods, sizeof(void*)); |
| } |
| GcRoot<mirror::Class>* old_types = GetDexCacheResolvedTypes(sizeof(void*)); |
| GcRoot<mirror::Class>* new_types = visitor(old_types); |
| if (old_types != new_types) { |
| SetDexCacheResolvedTypes(new_types, sizeof(void*)); |
| } |
| } |
| |
| template <typename Visitor> |
| inline void ArtMethod::UpdateEntrypoints(const Visitor& visitor) { |
| if (IsNative()) { |
| const void* old_native_code = GetEntryPointFromJni(); |
| const void* new_native_code = visitor(old_native_code); |
| if (old_native_code != new_native_code) { |
| SetEntryPointFromJni(new_native_code); |
| } |
| } else { |
| DCHECK(GetEntryPointFromJni() == nullptr); |
| } |
| const void* old_code = GetEntryPointFromQuickCompiledCode(); |
| const void* new_code = visitor(old_code); |
| if (old_code != new_code) { |
| SetEntryPointFromQuickCompiledCode(new_code); |
| } |
| } |
| |
| } // namespace art |
| |
| #endif // ART_RUNTIME_ART_METHOD_INL_H_ |