1 /*
2 * Copyright (C) 2016 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_IMAGE_INL_H_
18 #define ART_RUNTIME_IMAGE_INL_H_
19
20 #include "image.h"
21
22 #include "art_method.h"
23 #include "imt_conflict_table.h"
24 #include "imtable.h"
25 #include "mirror/object_array-inl.h"
26 #include "obj_ptr-inl.h"
27 #include "read_barrier-inl.h"
28
29 namespace art {
30
31 template <ReadBarrierOption kReadBarrierOption>
GetImageRoot(ImageRoot image_root)32 inline ObjPtr<mirror::Object> ImageHeader::GetImageRoot(ImageRoot image_root) const {
33 ObjPtr<mirror::ObjectArray<mirror::Object>> image_roots = GetImageRoots<kReadBarrierOption>();
34 return image_roots->Get<kVerifyNone, kReadBarrierOption>(static_cast<int32_t>(image_root));
35 }
36
37 template <ReadBarrierOption kReadBarrierOption>
GetImageRoots()38 inline ObjPtr<mirror::ObjectArray<mirror::Object>> ImageHeader::GetImageRoots() const {
39 // Need a read barrier as it's not visited during root scan.
40 // Pass in the address of the local variable to the read barrier
41 // rather than image_roots_ because it won't move (asserted below)
42 // and it's a const member.
43 mirror::ObjectArray<mirror::Object>* image_roots =
44 reinterpret_cast<mirror::ObjectArray<mirror::Object>*>(image_roots_);
45 mirror::ObjectArray<mirror::Object>* result =
46 ReadBarrier::BarrierForRoot<mirror::ObjectArray<mirror::Object>, kReadBarrierOption>(
47 &image_roots);
48 DCHECK_EQ(image_roots, result);
49 return image_roots;
50 }
51
52 template <typename Visitor>
VisitPackedArtFields(const Visitor & visitor,uint8_t * base)53 inline void ImageHeader::VisitPackedArtFields(const Visitor& visitor, uint8_t* base) const {
54 const ImageSection& fields = GetFieldsSection();
55 for (size_t pos = 0u; pos < fields.Size(); ) {
56 auto* array = reinterpret_cast<LengthPrefixedArray<ArtField>*>(base + fields.Offset() + pos);
57 for (size_t i = 0u; i < array->size(); ++i) {
58 visitor(array->At(i, sizeof(ArtField)));
59 }
60 pos += array->ComputeSize(array->size());
61 }
62 }
63
64 template <typename Visitor>
VisitPackedArtMethods(const Visitor & visitor,uint8_t * base,PointerSize pointer_size)65 inline void ImageHeader::VisitPackedArtMethods(const Visitor& visitor,
66 uint8_t* base,
67 PointerSize pointer_size) const {
68 const size_t method_alignment = ArtMethod::Alignment(pointer_size);
69 const size_t method_size = ArtMethod::Size(pointer_size);
70 const ImageSection& methods = GetMethodsSection();
71 for (size_t pos = 0u; pos < methods.Size(); ) {
72 auto* array = reinterpret_cast<LengthPrefixedArray<ArtMethod>*>(base + methods.Offset() + pos);
73 for (size_t i = 0u; i < array->size(); ++i) {
74 visitor(array->At(i, method_size, method_alignment));
75 }
76 pos += array->ComputeSize(array->size(), method_size, method_alignment);
77 }
78 const ImageSection& runtime_methods = GetRuntimeMethodsSection();
79 for (size_t pos = 0u; pos < runtime_methods.Size(); ) {
80 auto* method = reinterpret_cast<ArtMethod*>(base + runtime_methods.Offset() + pos);
81 visitor(*method);
82 pos += method_size;
83 }
84 }
85
86 template <typename Visitor>
VisitPackedImTables(const Visitor & visitor,uint8_t * base,PointerSize pointer_size)87 inline void ImageHeader::VisitPackedImTables(const Visitor& visitor,
88 uint8_t* base,
89 PointerSize pointer_size) const {
90 const ImageSection& section = GetImTablesSection();
91 for (size_t pos = 0; pos < section.Size();) {
92 ImTable* imt = reinterpret_cast<ImTable*>(base + section.Offset() + pos);
93 for (size_t i = 0; i < ImTable::kSize; ++i) {
94 ArtMethod* orig = imt->Get(i, pointer_size);
95 ArtMethod* updated = visitor(orig);
96 if (updated != orig) {
97 imt->Set(i, updated, pointer_size);
98 }
99 }
100 pos += ImTable::SizeInBytes(pointer_size);
101 }
102 }
103
104 template <typename Visitor>
VisitPackedImtConflictTables(const Visitor & visitor,uint8_t * base,PointerSize pointer_size)105 inline void ImageHeader::VisitPackedImtConflictTables(const Visitor& visitor,
106 uint8_t* base,
107 PointerSize pointer_size) const {
108 const ImageSection& section = GetIMTConflictTablesSection();
109 for (size_t pos = 0; pos < section.Size(); ) {
110 auto* table = reinterpret_cast<ImtConflictTable*>(base + section.Offset() + pos);
111 table->Visit([&visitor](const std::pair<ArtMethod*, ArtMethod*>& methods) {
112 return std::make_pair(visitor(methods.first), visitor(methods.second));
113 }, pointer_size);
114 pos += table->ComputeSize(pointer_size);
115 }
116 }
117
118 } // namespace art
119
120 #endif // ART_RUNTIME_IMAGE_INL_H_
121