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 #include "field-inl.h"
18
19 #include "class-inl.h"
20 #include "dex_cache-inl.h"
21 #include "object-inl.h"
22 #include "object_array-inl.h"
23
24 namespace art {
25 namespace mirror {
26
GetArtField()27 ArtField* Field::GetArtField() {
28 ObjPtr<mirror::Class> declaring_class = GetDeclaringClass();
29 if (UNLIKELY(declaring_class->IsProxyClass())) {
30 DCHECK(IsStatic());
31 DCHECK_EQ(declaring_class->NumStaticFields(), 2U);
32 // 0 == Class[] interfaces; 1 == Class[][] throws;
33 if (GetDexFieldIndex() == 0) {
34 return &declaring_class->GetSFieldsPtr()->At(0);
35 } else {
36 DCHECK_EQ(GetDexFieldIndex(), 1U);
37 return &declaring_class->GetSFieldsPtr()->At(1);
38 }
39 }
40 const ObjPtr<mirror::DexCache> dex_cache = declaring_class->GetDexCache();
41 ArtField* art_field = dex_cache->GetResolvedField(GetDexFieldIndex(), kRuntimePointerSize);
42 if (UNLIKELY(art_field == nullptr)) {
43 if (IsStatic()) {
44 art_field = declaring_class->FindDeclaredStaticField(dex_cache, GetDexFieldIndex());
45 } else {
46 art_field = declaring_class->FindInstanceField(dex_cache, GetDexFieldIndex());
47 }
48 CHECK(art_field != nullptr);
49 dex_cache->SetResolvedField(GetDexFieldIndex(), art_field, kRuntimePointerSize);
50 }
51 CHECK_EQ(declaring_class, art_field->GetDeclaringClass());
52 return art_field;
53 }
54
55 } // namespace mirror
56 } // namespace art
57