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>
CreateFromArtField(Thread * self,ArtField * field,bool force_resolve)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>
SetDeclaringClass(ObjPtr<mirror::Class> c)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>
SetType(ObjPtr<mirror::Class> type)87 inline void Field::SetType(ObjPtr<mirror::Class> type) {
88 SetFieldObject<kTransactionActive>(OFFSET_OF_OBJECT_MEMBER(Field, type_), type);
89 }
90
GetTypeAsPrimitiveType()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