1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ART_RUNTIME_MIRROR_CLASS_EXT_H_ 18 #define ART_RUNTIME_MIRROR_CLASS_EXT_H_ 19 20 #include "array.h" 21 #include "class.h" 22 #include "dex_cache.h" 23 #include "object.h" 24 #include "object_array.h" 25 #include "string.h" 26 27 namespace art { 28 29 struct ClassExtOffsets; 30 31 namespace mirror { 32 33 // C++ mirror of dalvik.system.ClassExt 34 class MANAGED ClassExt : public Object { 35 public: 36 static uint32_t ClassSize(PointerSize pointer_size); 37 38 // Size of an instance of dalvik.system.ClassExt. 39 static constexpr uint32_t InstanceSize() { 40 return sizeof(ClassExt); 41 } 42 43 void SetVerifyError(ObjPtr<Object> obj) REQUIRES_SHARED(Locks::mutator_lock_); 44 45 ObjPtr<Object> GetVerifyError() REQUIRES_SHARED(Locks::mutator_lock_); 46 47 ObjPtr<ObjectArray<DexCache>> GetObsoleteDexCaches() REQUIRES_SHARED(Locks::mutator_lock_); 48 49 template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, 50 ReadBarrierOption kReadBarrierOption = kWithReadBarrier> 51 ObjPtr<PointerArray> GetObsoleteMethods() REQUIRES_SHARED(Locks::mutator_lock_); 52 53 ObjPtr<Object> GetOriginalDexFile() REQUIRES_SHARED(Locks::mutator_lock_); 54 55 void SetOriginalDexFile(ObjPtr<Object> bytes) REQUIRES_SHARED(Locks::mutator_lock_); 56 57 uint16_t GetPreRedefineClassDefIndex() REQUIRES_SHARED(Locks::mutator_lock_) { 58 return static_cast<uint16_t>( 59 GetField32(OFFSET_OF_OBJECT_MEMBER(ClassExt, pre_redefine_class_def_index_))); 60 } 61 62 void SetPreRedefineClassDefIndex(uint16_t index) REQUIRES_SHARED(Locks::mutator_lock_); 63 64 const DexFile* GetPreRedefineDexFile() REQUIRES_SHARED(Locks::mutator_lock_) { 65 return reinterpret_cast<const DexFile*>(static_cast<uintptr_t>( 66 GetField64(OFFSET_OF_OBJECT_MEMBER(ClassExt, pre_redefine_dex_file_ptr_)))); 67 } 68 69 void SetPreRedefineDexFile(const DexFile* dex_file) REQUIRES_SHARED(Locks::mutator_lock_); 70 71 void SetObsoleteArrays(ObjPtr<PointerArray> methods, ObjPtr<ObjectArray<DexCache>> dex_caches) 72 REQUIRES_SHARED(Locks::mutator_lock_); 73 74 // Extend the obsolete arrays by the given amount. 75 bool ExtendObsoleteArrays(Thread* self, uint32_t increase) 76 REQUIRES_SHARED(Locks::mutator_lock_); 77 78 template<ReadBarrierOption kReadBarrierOption = kWithReadBarrier, class Visitor> 79 inline void VisitNativeRoots(Visitor& visitor, PointerSize pointer_size) 80 REQUIRES_SHARED(Locks::mutator_lock_); 81 82 static ObjPtr<ClassExt> Alloc(Thread* self) REQUIRES_SHARED(Locks::mutator_lock_); 83 84 private: 85 // Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses". 86 HeapReference<ObjectArray<DexCache>> obsolete_dex_caches_; 87 88 HeapReference<PointerArray> obsolete_methods_; 89 90 HeapReference<Object> original_dex_file_; 91 92 // The saved verification error of this class. 93 HeapReference<Object> verify_error_; 94 95 // Native pointer to DexFile and ClassDef index of this class before it was JVMTI-redefined. 96 int64_t pre_redefine_dex_file_ptr_; 97 int32_t pre_redefine_class_def_index_; 98 99 friend struct art::ClassExtOffsets; // for verifying offset information 100 DISALLOW_IMPLICIT_CONSTRUCTORS(ClassExt); 101 }; 102 103 } // namespace mirror 104 } // namespace art 105 106 #endif // ART_RUNTIME_MIRROR_CLASS_EXT_H_ 107
