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