/* * Copyright (C) 2016 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_MIRROR_CLASS_EXT_H_ #define ART_RUNTIME_MIRROR_CLASS_EXT_H_ #include "array.h" #include "class.h" #include "dex_cache.h" #include "object.h" #include "object_array.h" #include "string.h" namespace art { struct ClassExtOffsets; namespace mirror { // C++ mirror of dalvik.system.ClassExt class MANAGED ClassExt : public Object { public: static uint32_t ClassSize(PointerSize pointer_size); // Size of an instance of dalvik.system.ClassExt. static constexpr uint32_t InstanceSize() { return sizeof(ClassExt); } void SetVerifyError(ObjPtr obj) REQUIRES_SHARED(Locks::mutator_lock_); ObjPtr GetVerifyError() REQUIRES_SHARED(Locks::mutator_lock_); ObjPtr> GetObsoleteDexCaches() REQUIRES_SHARED(Locks::mutator_lock_); template bool EnsureInstanceJFieldIDsArrayPresent(size_t count) REQUIRES_SHARED(Locks::mutator_lock_); template ObjPtr GetInstanceJFieldIDsPointerArray() REQUIRES_SHARED(Locks::mutator_lock_); template ObjPtr GetInstanceJFieldIDs() REQUIRES_SHARED(Locks::mutator_lock_); template bool HasInstanceFieldPointerIdMarker() REQUIRES_SHARED(Locks::mutator_lock_); template bool EnsureStaticJFieldIDsArrayPresent(size_t count) REQUIRES_SHARED(Locks::mutator_lock_); template ObjPtr GetStaticJFieldIDsPointerArray() REQUIRES_SHARED(Locks::mutator_lock_); template ObjPtr GetStaticJFieldIDs() REQUIRES_SHARED(Locks::mutator_lock_); template bool HasStaticFieldPointerIdMarker() REQUIRES_SHARED(Locks::mutator_lock_); template bool EnsureJMethodIDsArrayPresent(size_t count) REQUIRES_SHARED(Locks::mutator_lock_); template ObjPtr GetJMethodIDs() REQUIRES_SHARED(Locks::mutator_lock_); template ObjPtr GetJMethodIDsPointerArray() REQUIRES_SHARED(Locks::mutator_lock_); template bool HasMethodPointerIdMarker() REQUIRES_SHARED(Locks::mutator_lock_); template ObjPtr GetObsoleteMethods() REQUIRES_SHARED(Locks::mutator_lock_); ObjPtr GetOriginalDexFile() REQUIRES_SHARED(Locks::mutator_lock_); // Used to manually initialize the ext-ids arrays for the ClassExt associated // with the Class. This simplifies the id allocation path. void SetIdsArraysForClassExtExtData(ObjPtr marker) REQUIRES_SHARED(Locks::mutator_lock_); void SetOriginalDexFile(ObjPtr bytes) REQUIRES_SHARED(Locks::mutator_lock_); uint16_t GetPreRedefineClassDefIndex() REQUIRES_SHARED(Locks::mutator_lock_) { return static_cast( GetField32(OFFSET_OF_OBJECT_MEMBER(ClassExt, pre_redefine_class_def_index_))); } void SetPreRedefineClassDefIndex(uint16_t index) REQUIRES_SHARED(Locks::mutator_lock_); const DexFile* GetPreRedefineDexFile() REQUIRES_SHARED(Locks::mutator_lock_) { return reinterpret_cast(static_cast( GetField64(OFFSET_OF_OBJECT_MEMBER(ClassExt, pre_redefine_dex_file_ptr_)))); } void SetPreRedefineDexFile(const DexFile* dex_file) REQUIRES_SHARED(Locks::mutator_lock_); void SetObsoleteArrays(ObjPtr methods, ObjPtr> dex_caches) REQUIRES_SHARED(Locks::mutator_lock_); // Extend the obsolete arrays by the given amount. static bool ExtendObsoleteArrays(Handle h_this, Thread* self, uint32_t increase) REQUIRES_SHARED(Locks::mutator_lock_); template inline void VisitNativeRoots(Visitor& visitor, PointerSize pointer_size) REQUIRES_SHARED(Locks::mutator_lock_); template inline void VisitMethods(Visitor visitor, PointerSize pointer_size) REQUIRES_SHARED(Locks::mutator_lock_); static ObjPtr Alloc(Thread* self) REQUIRES_SHARED(Locks::mutator_lock_); // TODO Save the obsolete class, if we have one. // TODO We need this so jit-cleanup can work. the obsolete class might get cleaned up early // otherwise. We should remove the need for this. template ObjPtr GetObsoleteClass() REQUIRES_SHARED(Locks::mutator_lock_); void SetObsoleteClass(ObjPtr classes) REQUIRES_SHARED(Locks::mutator_lock_); template inline void VisitJFieldIDs(Visitor v) REQUIRES_SHARED(Locks::mutator_lock_); template inline void VisitJMethodIDs(Visitor v) REQUIRES_SHARED(Locks::mutator_lock_); private: template bool EnsureJniIdsArrayPresent(MemberOffset off, size_t count) REQUIRES_SHARED(Locks::mutator_lock_); // Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses". // An array containing the jfieldIDs assigned to each field in the corresponding position in the // classes ifields_ array or '0' if no id has been assigned to that field yet. HeapReference instance_jfield_ids_; // An array containing the jmethodIDs assigned to each method in the corresponding position in // the classes methods_ array or '0' if no id has been assigned to that method yet. HeapReference jmethod_ids_; // If set this is the Class object that was being used before a structural redefinition occurred. HeapReference obsolete_class_; HeapReference> obsolete_dex_caches_; HeapReference obsolete_methods_; HeapReference original_dex_file_; // An array containing the jfieldIDs assigned to each field in the corresponding position in the // classes sfields_ array or '0' if no id has been assigned to that field yet. HeapReference static_jfield_ids_; // The saved verification error of this class. HeapReference verify_error_; // Native pointer to DexFile and ClassDef index of this class before it was JVMTI-redefined. int64_t pre_redefine_dex_file_ptr_; int32_t pre_redefine_class_def_index_; friend struct art::ClassExtOffsets; // for verifying offset information DISALLOW_IMPLICIT_CONSTRUCTORS(ClassExt); }; } // namespace mirror } // namespace art #endif // ART_RUNTIME_MIRROR_CLASS_EXT_H_