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 #include "write_barrier.h"
24
25 namespace art {
26 namespace mirror {
27
VisitTarget(ReflectiveValueVisitor * v)28 void Field::VisitTarget(ReflectiveValueVisitor* v) {
29 HeapReflectiveSourceInfo hrsi(kSourceJavaLangReflectField, this);
30 ArtField* orig = GetArtField();
31 ArtField* new_value = v->VisitField(orig, hrsi);
32 if (orig != new_value) {
33 SetOffset<false>(new_value->GetOffset().Int32Value());
34 SetDeclaringClass<false>(new_value->GetDeclaringClass());
35 auto new_range =
36 IsStatic() ? GetDeclaringClass()->GetSFields() : GetDeclaringClass()->GetIFields();
37 auto position = std::find_if(
38 new_range.begin(), new_range.end(), [&](const auto& f) { return &f == new_value; });
39 DCHECK(position != new_range.end());
40 SetArtFieldIndex<false>(std::distance(new_range.begin(), position));
41 WriteBarrier::ForEveryFieldWrite(this);
42 }
43 DCHECK_EQ(new_value, GetArtField());
44 }
45
GetArtField()46 ArtField* Field::GetArtField() {
47 ObjPtr<mirror::Class> declaring_class = GetDeclaringClass();
48 DCHECK_LT(GetArtFieldIndex(),
49 IsStatic() ? declaring_class->NumStaticFields() : declaring_class->NumInstanceFields());
50 if (IsStatic()) {
51 return declaring_class->GetStaticField(GetArtFieldIndex());
52 } else {
53 return declaring_class->GetInstanceField(GetArtFieldIndex());
54 }
55 }
56
57 } // namespace mirror
58 } // namespace art
59