| /* |
| * Copyright (C) 2018 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_CLASS_ROOT_H_ |
| #define ART_RUNTIME_CLASS_ROOT_H_ |
| |
| #include "class_linker-inl.h" |
| #include "gc_root-inl.h" |
| #include "mirror/class.h" |
| #include "mirror/object_array-inl.h" |
| #include "obj_ptr-inl.h" |
| #include "runtime.h" |
| |
| namespace art { |
| |
| namespace mirror { |
| class ArrayElementVarHandle; |
| class ByteArrayViewVarHandle; |
| class ByteBufferViewVarHandle; |
| class CallSite; |
| class ClassExt; |
| class ClassLoader; |
| class Constructor; |
| class DexCache; |
| class EmulatedStackFrame; |
| class Field; |
| class FieldVarHandle; |
| class Method; |
| class MethodHandleImpl; |
| class MethodHandlesLookup; |
| class MethodType; |
| class Object; |
| class Proxy; |
| template<typename T> class PrimitiveArray; |
| class Reference; |
| class StackTraceElement; |
| class String; |
| class Throwable; |
| class VarHandle; |
| } // namespace mirror |
| |
| #define CLASS_ROOT_LIST(M) \ |
| M(kJavaLangClass, "Ljava/lang/Class;", mirror::Class) \ |
| M(kJavaLangObject, "Ljava/lang/Object;", mirror::Object) \ |
| M(kClassArrayClass, "[Ljava/lang/Class;", mirror::ObjectArray<mirror::Class>) \ |
| M(kObjectArrayClass, "[Ljava/lang/Object;", mirror::ObjectArray<mirror::Object>) \ |
| M(kJavaLangString, "Ljava/lang/String;", mirror::String) \ |
| M(kJavaLangDexCache, "Ljava/lang/DexCache;", mirror::DexCache) \ |
| M(kJavaLangRefReference, "Ljava/lang/ref/Reference;", mirror::Reference) \ |
| M(kJavaLangReflectConstructor, "Ljava/lang/reflect/Constructor;", mirror::Constructor) \ |
| M(kJavaLangReflectField, "Ljava/lang/reflect/Field;", mirror::Field) \ |
| M(kJavaLangReflectMethod, "Ljava/lang/reflect/Method;", mirror::Method) \ |
| M(kJavaLangReflectProxy, "Ljava/lang/reflect/Proxy;", mirror::Proxy) \ |
| M(kJavaLangStringArrayClass, "[Ljava/lang/String;", mirror::ObjectArray<mirror::String>) \ |
| M(kJavaLangReflectConstructorArrayClass, "[Ljava/lang/reflect/Constructor;", mirror::ObjectArray<mirror::Constructor>) \ |
| M(kJavaLangReflectFieldArrayClass, "[Ljava/lang/reflect/Field;", mirror::ObjectArray<mirror::Field>) \ |
| M(kJavaLangReflectMethodArrayClass, "[Ljava/lang/reflect/Method;", mirror::ObjectArray<mirror::Method>) \ |
| M(kJavaLangInvokeCallSite, "Ljava/lang/invoke/CallSite;", mirror::CallSite) \ |
| M(kJavaLangInvokeMethodHandle, "Ljava/lang/invoke/MethodHandle;", mirror::MethodHandle) \ |
| M(kJavaLangInvokeMethodHandleImpl, "Ljava/lang/invoke/MethodHandleImpl;", mirror::MethodHandleImpl) \ |
| M(kJavaLangInvokeMethodHandlesLookup, "Ljava/lang/invoke/MethodHandles$Lookup;", mirror::MethodHandlesLookup) \ |
| M(kJavaLangInvokeMethodType, "Ljava/lang/invoke/MethodType;", mirror::MethodType) \ |
| M(kJavaLangInvokeVarHandle, "Ljava/lang/invoke/VarHandle;", mirror::VarHandle) \ |
| M(kJavaLangInvokeFieldVarHandle, "Ljava/lang/invoke/FieldVarHandle;", mirror::FieldVarHandle) \ |
| M(kJavaLangInvokeArrayElementVarHandle, "Ljava/lang/invoke/ArrayElementVarHandle;", mirror::ArrayElementVarHandle) \ |
| M(kJavaLangInvokeByteArrayViewVarHandle, "Ljava/lang/invoke/ByteArrayViewVarHandle;", mirror::ByteArrayViewVarHandle) \ |
| M(kJavaLangInvokeByteBufferViewVarHandle, "Ljava/lang/invoke/ByteBufferViewVarHandle;", mirror::ByteBufferViewVarHandle) \ |
| M(kJavaLangClassLoader, "Ljava/lang/ClassLoader;", mirror::ClassLoader) \ |
| M(kJavaLangThrowable, "Ljava/lang/Throwable;", mirror::Throwable) \ |
| M(kJavaLangClassNotFoundException, "Ljava/lang/ClassNotFoundException;", detail::NoMirrorType<detail::ClassNotFoundExceptionTag>) \ |
| M(kJavaLangStackTraceElement, "Ljava/lang/StackTraceElement;", mirror::StackTraceElement) \ |
| M(kDalvikSystemEmulatedStackFrame, "Ldalvik/system/EmulatedStackFrame;", mirror::EmulatedStackFrame) \ |
| M(kPrimitiveBoolean, "Z", detail::NoMirrorType<uint8_t>) \ |
| M(kPrimitiveByte, "B", detail::NoMirrorType<int8_t>) \ |
| M(kPrimitiveChar, "C", detail::NoMirrorType<uint16_t>) \ |
| M(kPrimitiveDouble, "D", detail::NoMirrorType<double>) \ |
| M(kPrimitiveFloat, "F", detail::NoMirrorType<float>) \ |
| M(kPrimitiveInt, "I", detail::NoMirrorType<int32_t>) \ |
| M(kPrimitiveLong, "J", detail::NoMirrorType<int64_t>) \ |
| M(kPrimitiveShort, "S", detail::NoMirrorType<int16_t>) \ |
| M(kPrimitiveVoid, "V", detail::NoMirrorType<void>) \ |
| M(kBooleanArrayClass, "[Z", mirror::PrimitiveArray<uint8_t>) \ |
| M(kByteArrayClass, "[B", mirror::PrimitiveArray<int8_t>) \ |
| M(kCharArrayClass, "[C", mirror::PrimitiveArray<uint16_t>) \ |
| M(kDoubleArrayClass, "[D", mirror::PrimitiveArray<double>) \ |
| M(kFloatArrayClass, "[F", mirror::PrimitiveArray<float>) \ |
| M(kIntArrayClass, "[I", mirror::PrimitiveArray<int32_t>) \ |
| M(kLongArrayClass, "[J", mirror::PrimitiveArray<int64_t>) \ |
| M(kShortArrayClass, "[S", mirror::PrimitiveArray<int16_t>) \ |
| M(kJavaLangStackTraceElementArrayClass, "[Ljava/lang/StackTraceElement;", mirror::ObjectArray<mirror::StackTraceElement>) \ |
| M(kJavaLangClassLoaderArrayClass, "[Ljava/lang/ClassLoader;", mirror::ObjectArray<mirror::ClassLoader>) \ |
| M(kDalvikSystemClassExt, "Ldalvik/system/ClassExt;", mirror::ClassExt) |
| |
| // Well known mirror::Class roots accessed via ClassLinker::GetClassRoots(). |
| enum class ClassRoot : uint32_t { |
| #define CLASS_ROOT_ENUMERATOR(name, descriptor, mirror_type) name, |
| CLASS_ROOT_LIST(CLASS_ROOT_ENUMERATOR) |
| #undef CLASS_ROOT_ENUMERATOR |
| kMax, |
| }; |
| |
| const char* GetClassRootDescriptor(ClassRoot class_root); |
| |
| template <ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| inline ObjPtr<mirror::Class> GetClassRoot( |
| ClassRoot class_root, |
| ObjPtr<mirror::ObjectArray<mirror::Class>> class_roots) REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK(class_roots != nullptr); |
| if (kReadBarrierOption == kWithReadBarrier) { |
| // With read barrier all references must point to the to-space. |
| // Without read barrier, this check could fail. |
| DCHECK_EQ(class_roots, Runtime::Current()->GetClassLinker()->GetClassRoots()); |
| } |
| DCHECK_LT(static_cast<uint32_t>(class_root), static_cast<uint32_t>(ClassRoot::kMax)); |
| int32_t index = static_cast<int32_t>(class_root); |
| ObjPtr<mirror::Class> klass = |
| class_roots->GetWithoutChecks<kDefaultVerifyFlags, kReadBarrierOption>(index); |
| DCHECK(klass != nullptr); |
| return klass; |
| } |
| |
| template <ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| inline ObjPtr<mirror::Class> GetClassRoot(ClassRoot class_root, ClassLinker* linker) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetClassRoot<kReadBarrierOption>(class_root, linker->GetClassRoots<kReadBarrierOption>()); |
| } |
| |
| template <ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| inline ObjPtr<mirror::Class> GetClassRoot(ClassRoot class_root) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetClassRoot<kReadBarrierOption>(class_root, Runtime::Current()->GetClassLinker()); |
| } |
| |
| namespace detail { |
| |
| class ClassNotFoundExceptionTag; |
| template <class Tag> struct NoMirrorType; |
| |
| template <class MirrorType> |
| struct ClassRootSelector; // No definition for unspecialized ClassRoot selector. |
| |
| #define SPECIALIZE_CLASS_ROOT_SELECTOR(name, descriptor, mirror_type) \ |
| template <> \ |
| struct ClassRootSelector<mirror_type> { \ |
| static constexpr ClassRoot value = ClassRoot::name; \ |
| }; |
| |
| CLASS_ROOT_LIST(SPECIALIZE_CLASS_ROOT_SELECTOR) |
| |
| #undef SPECIALIZE_CLASS_ROOT_SELECTOR |
| |
| } // namespace detail |
| |
| template <class MirrorType, ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| inline ObjPtr<mirror::Class> GetClassRoot(ObjPtr<mirror::ObjectArray<mirror::Class>> class_roots) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetClassRoot<kReadBarrierOption>(detail::ClassRootSelector<MirrorType>::value, |
| class_roots); |
| } |
| |
| template <class MirrorType, ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| inline ObjPtr<mirror::Class> GetClassRoot(ClassLinker* linker) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetClassRoot<kReadBarrierOption>(detail::ClassRootSelector<MirrorType>::value, linker); |
| } |
| |
| template <class MirrorType, ReadBarrierOption kReadBarrierOption = kWithReadBarrier> |
| inline ObjPtr<mirror::Class> GetClassRoot() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetClassRoot<kReadBarrierOption>(detail::ClassRootSelector<MirrorType>::value); |
| } |
| |
| } // namespace art |
| |
| #endif // ART_RUNTIME_CLASS_ROOT_H_ |
