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