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_EXECUTABLE_H_ 18 #define ART_RUNTIME_MIRROR_EXECUTABLE_H_ 19 20 #include "accessible_object.h" 21 #include "object.h" 22 #include "read_barrier_option.h" 23 24 namespace art { 25 26 struct ExecutableOffsets; 27 class ArtMethod; 28 class ReflectiveValueVisitor; 29 30 namespace mirror { 31 32 // C++ mirror of java.lang.reflect.Executable. 33 class MANAGED Executable : public AccessibleObject { 34 public: 35 template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> GetArtMethod()36 ArtMethod* GetArtMethod() REQUIRES_SHARED(Locks::mutator_lock_) { 37 return reinterpret_cast64<ArtMethod*>(GetField64<kVerifyFlags>(ArtMethodOffset())); 38 } 39 40 template <VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> 41 inline void VisitTarget(ReflectiveValueVisitor* v) REQUIRES(Locks::mutator_lock_); 42 43 template <bool kTransactionActive = false, 44 bool kCheckTransaction = true, 45 VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> 46 void SetArtMethod(ArtMethod* method) REQUIRES_SHARED(Locks::mutator_lock_); 47 48 ObjPtr<mirror::Class> GetDeclaringClass() REQUIRES_SHARED(Locks::mutator_lock_); 49 ArtMethodOffset()50 static MemberOffset ArtMethodOffset() { 51 return MemberOffset(OFFSETOF_MEMBER(Executable, art_method_)); 52 } 53 54 protected: 55 // Called from Constructor::CreateFromArtMethod, Method::CreateFromArtMethod. 56 template <PointerSize kPointerSize> 57 void InitializeFromArtMethod(ArtMethod* method) REQUIRES_SHARED(Locks::mutator_lock_) 58 REQUIRES(!Roles::uninterruptible_); 59 60 61 private: 62 uint16_t has_real_parameter_data_; 63 HeapReference<mirror::Class> declaring_class_; 64 HeapReference<mirror::Class> declaring_class_of_overridden_method_; 65 HeapReference<mirror::Array> parameters_; 66 uint64_t art_method_; 67 uint32_t access_flags_; 68 uint32_t dex_method_index_; 69 70 template<bool kTransactionActive = false> SetDeclaringClass(ObjPtr<mirror::Class> klass)71 void SetDeclaringClass(ObjPtr<mirror::Class> klass) REQUIRES_SHARED(Locks::mutator_lock_) { 72 SetFieldObject<kTransactionActive>(DeclaringClassOffset(), klass); 73 } 74 75 template<bool kTransactionActive = false> SetAccessFlags(uint32_t flags)76 void SetAccessFlags(uint32_t flags) REQUIRES_SHARED(Locks::mutator_lock_) { 77 SetField32<kTransactionActive>(AccessFlagsOffset(), flags); 78 } 79 80 template<bool kTransactionActive = false> SetDexMethodIndex(uint32_t idx)81 void SetDexMethodIndex(uint32_t idx) REQUIRES_SHARED(Locks::mutator_lock_) { 82 SetField32<kTransactionActive>(DexMethodIndexOffset(), idx); 83 } 84 DeclaringClassOffset()85 static MemberOffset DeclaringClassOffset() { 86 return MemberOffset(OFFSETOF_MEMBER(Executable, declaring_class_)); 87 } DeclaringClassOfOverriddenMethodOffset()88 static MemberOffset DeclaringClassOfOverriddenMethodOffset() { 89 return MemberOffset(OFFSETOF_MEMBER(Executable, declaring_class_of_overridden_method_)); 90 } AccessFlagsOffset()91 static MemberOffset AccessFlagsOffset() { 92 return MemberOffset(OFFSETOF_MEMBER(Executable, access_flags_)); 93 } DexMethodIndexOffset()94 static MemberOffset DexMethodIndexOffset() { 95 return MemberOffset(OFFSETOF_MEMBER(Executable, dex_method_index_)); 96 } 97 98 friend struct art::ExecutableOffsets; // for verifying offset information 99 DISALLOW_IMPLICIT_CONSTRUCTORS(Executable); 100 }; 101 102 } // namespace mirror 103 } // namespace art 104 105 #endif // ART_RUNTIME_MIRROR_EXECUTABLE_H_ 106