1 /* 2 * Copyright (C) 2015 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_FIELD_INL_H_ 18 #define ART_RUNTIME_MIRROR_FIELD_INL_H_ 19 20 #include "field.h" 21 22 #include "art_field-inl.h" 23 #include "class-inl.h" 24 #include "dex_cache-inl.h" 25 26 namespace art { 27 28 namespace mirror { 29 30 template <PointerSize kPointerSize, bool kTransactionActive> 31 inline mirror::Field* Field::CreateFromArtField(Thread* self, ArtField* field, bool force_resolve) { 32 StackHandleScope<2> hs(self); 33 // Try to resolve type before allocating since this is a thread suspension point. 34 Handle<mirror::Class> type = hs.NewHandle(field->ResolveType()); 35 36 if (type == nullptr) { 37 if (force_resolve) { 38 if (kIsDebugBuild) { 39 self->AssertPendingException(); 40 } 41 return nullptr; 42 } else { 43 // Can't resolve, clear the exception if it isn't OOME and continue with a null type. 44 mirror::Throwable* exception = self->GetException(); 45 if (exception->GetClass()->DescriptorEquals("Ljava/lang/OutOfMemoryError;")) { 46 return nullptr; 47 } 48 self->ClearException(); 49 } 50 } 51 auto ret = hs.NewHandle(ObjPtr<Field>::DownCast(StaticClass()->AllocObject(self))); 52 if (UNLIKELY(ret == nullptr)) { 53 self->AssertPendingOOMException(); 54 return nullptr; 55 } 56 auto dex_field_index = field->GetDexFieldIndex(); 57 auto* resolved_field = field->GetDexCache()->GetResolvedField(dex_field_index, kPointerSize); 58 if (field->GetDeclaringClass()->IsProxyClass()) { 59 DCHECK(field->IsStatic()); 60 DCHECK_LT(dex_field_index, 2U); 61 // The two static fields (interfaces, throws) of all proxy classes 62 // share the same dex file indices 0 and 1. So, we can't resolve 63 // them in the dex cache. 64 } else { 65 if (resolved_field != nullptr) { 66 DCHECK_EQ(resolved_field, field); 67 } else { 68 // We rely on the field being resolved so that we can back to the ArtField 69 // (i.e. FromReflectedMethod). 70 field->GetDexCache()->SetResolvedField(dex_field_index, field, kPointerSize); 71 } 72 } 73 ret->SetType<kTransactionActive>(type.Get()); 74 ret->SetDeclaringClass<kTransactionActive>(field->GetDeclaringClass()); 75 ret->SetAccessFlags<kTransactionActive>(field->GetAccessFlags()); 76 ret->SetDexFieldIndex<kTransactionActive>(dex_field_index); 77 ret->SetOffset<kTransactionActive>(field->GetOffset().Int32Value()); 78 return ret.Get(); 79 } 80 81 template<bool kTransactionActive> 82 inline void Field::SetDeclaringClass(ObjPtr<mirror::Class> c) { 83 SetFieldObject<kTransactionActive>(OFFSET_OF_OBJECT_MEMBER(Field, declaring_class_), c); 84 } 85 86 template<bool kTransactionActive> 87 inline void Field::SetType(ObjPtr<mirror::Class> type) { 88 SetFieldObject<kTransactionActive>(OFFSET_OF_OBJECT_MEMBER(Field, type_), type); 89 } 90 91 inline Primitive::Type Field::GetTypeAsPrimitiveType() { 92 return GetType()->GetPrimitiveType(); 93 } 94 95 } // namespace mirror 96 } // namespace art 97 98 #endif // ART_RUNTIME_MIRROR_FIELD_INL_H_ 99
