Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 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 | |
Brian Carlstrom | fc0e321 | 2013-07-17 14:40:12 -0700 | [diff] [blame] | 17 | #ifndef ART_RUNTIME_CLASS_LINKER_INL_H_ |
| 18 | #define ART_RUNTIME_CLASS_LINKER_INL_H_ |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 19 | |
| 20 | #include "class_linker.h" |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 21 | #include "mirror/art_field.h" |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 22 | #include "mirror/class_loader.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 23 | #include "mirror/dex_cache.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 24 | #include "mirror/iftable.h" |
| 25 | #include "mirror/object_array.h" |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 26 | #include "object_utils.h" |
Mathieu Chartier | c645f1d | 2014-03-06 18:11:53 -0800 | [diff] [blame] | 27 | #include "sirt_ref-inl.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 28 | |
| 29 | namespace art { |
| 30 | |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 31 | inline bool ClassLinker::IsInBootClassPath(const char* descriptor) { |
| 32 | DexFile::ClassPathEntry pair = DexFile::FindInClassPath(descriptor, boot_class_path_); |
| 33 | return pair.second != nullptr; |
| 34 | } |
| 35 | |
| 36 | inline mirror::Class* ClassLinker::FindSystemClass(Thread* self, const char* descriptor) { |
| 37 | SirtRef<mirror::ClassLoader> class_loader(self, nullptr); |
| 38 | return FindClass(self, descriptor, class_loader); |
| 39 | } |
| 40 | |
| 41 | inline mirror::Class* ClassLinker::FindArrayClass(Thread* self, mirror::Class* element_class) { |
| 42 | for (size_t i = 0; i < kFindArrayCacheSize; ++i) { |
Ian Rogers | a55cf41 | 2014-02-27 00:31:26 -0800 | [diff] [blame] | 43 | // Read the cached array class once to avoid races with other threads setting it. |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 44 | mirror::Class* array_class = find_array_class_cache_[i]; |
| 45 | if (array_class != nullptr && array_class->GetComponentType() == element_class) { |
| 46 | return array_class; |
| 47 | } |
| 48 | } |
Ian Rogers | f9c612f | 2014-02-27 10:58:17 -0800 | [diff] [blame] | 49 | DCHECK(!element_class->IsPrimitiveVoid()); |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 50 | std::string descriptor("["); |
| 51 | descriptor += ClassHelper(element_class).GetDescriptor(); |
| 52 | SirtRef<mirror::ClassLoader> class_loader(self, element_class->GetClassLoader()); |
| 53 | mirror::Class* array_class = FindClass(self, descriptor.c_str(), class_loader); |
| 54 | // Benign races in storing array class and incrementing index. |
| 55 | size_t victim_index = find_array_class_cache_next_victim_; |
| 56 | find_array_class_cache_[victim_index] = array_class; |
| 57 | find_array_class_cache_next_victim_ = (victim_index + 1) % kFindArrayCacheSize; |
| 58 | return array_class; |
| 59 | } |
| 60 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 61 | inline mirror::String* ClassLinker::ResolveString(uint32_t string_idx, |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 62 | mirror::ArtMethod* referrer) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 63 | mirror::String* resolved_string = referrer->GetDexCacheStrings()->Get(string_idx); |
| 64 | if (UNLIKELY(resolved_string == NULL)) { |
| 65 | mirror::Class* declaring_class = referrer->GetDeclaringClass(); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 66 | SirtRef<mirror::DexCache> dex_cache(Thread::Current(), declaring_class->GetDexCache()); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 67 | const DexFile& dex_file = *dex_cache->GetDexFile(); |
| 68 | resolved_string = ResolveString(dex_file, string_idx, dex_cache); |
Ian Rogers | eebe03a | 2014-05-02 11:09:57 -0700 | [diff] [blame] | 69 | if (resolved_string != nullptr) { |
| 70 | DCHECK_EQ(dex_cache->GetResolvedString(string_idx), resolved_string); |
| 71 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 72 | } |
| 73 | return resolved_string; |
| 74 | } |
| 75 | |
| 76 | inline mirror::Class* ClassLinker::ResolveType(uint16_t type_idx, |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 77 | mirror::ArtMethod* referrer) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 78 | mirror::Class* resolved_type = referrer->GetDexCacheResolvedTypes()->Get(type_idx); |
| 79 | if (UNLIKELY(resolved_type == NULL)) { |
| 80 | mirror::Class* declaring_class = referrer->GetDeclaringClass(); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 81 | Thread* self = Thread::Current(); |
| 82 | SirtRef<mirror::DexCache> dex_cache(self, declaring_class->GetDexCache()); |
| 83 | SirtRef<mirror::ClassLoader> class_loader(self, declaring_class->GetClassLoader()); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 84 | const DexFile& dex_file = *dex_cache->GetDexFile(); |
| 85 | resolved_type = ResolveType(dex_file, type_idx, dex_cache, class_loader); |
Ian Rogers | eebe03a | 2014-05-02 11:09:57 -0700 | [diff] [blame] | 86 | if (resolved_type != nullptr) { |
| 87 | DCHECK_EQ(dex_cache->GetResolvedType(type_idx), resolved_type); |
| 88 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 89 | } |
| 90 | return resolved_type; |
| 91 | } |
| 92 | |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 93 | inline mirror::Class* ClassLinker::ResolveType(uint16_t type_idx, mirror::ArtField* referrer) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 94 | mirror::Class* declaring_class = referrer->GetDeclaringClass(); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 95 | mirror::DexCache* dex_cache_ptr = declaring_class->GetDexCache(); |
| 96 | mirror::Class* resolved_type = dex_cache_ptr->GetResolvedType(type_idx); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 97 | if (UNLIKELY(resolved_type == NULL)) { |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 98 | Thread* self = Thread::Current(); |
| 99 | SirtRef<mirror::DexCache> dex_cache(self, dex_cache_ptr); |
| 100 | SirtRef<mirror::ClassLoader> class_loader(self, declaring_class->GetClassLoader()); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 101 | const DexFile& dex_file = *dex_cache->GetDexFile(); |
| 102 | resolved_type = ResolveType(dex_file, type_idx, dex_cache, class_loader); |
Ian Rogers | eebe03a | 2014-05-02 11:09:57 -0700 | [diff] [blame] | 103 | if (resolved_type != nullptr) { |
| 104 | DCHECK_EQ(dex_cache->GetResolvedType(type_idx), resolved_type); |
| 105 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 106 | } |
| 107 | return resolved_type; |
| 108 | } |
| 109 | |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 110 | inline mirror::ArtMethod* ClassLinker::ResolveMethod(uint32_t method_idx, |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 111 | mirror::ArtMethod* referrer, |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 112 | InvokeType type) { |
| 113 | mirror::ArtMethod* resolved_method = |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 114 | referrer->GetDexCacheResolvedMethods()->Get(method_idx); |
| 115 | if (UNLIKELY(resolved_method == NULL || resolved_method->IsRuntimeMethod())) { |
| 116 | mirror::Class* declaring_class = referrer->GetDeclaringClass(); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 117 | Thread* self = Thread::Current(); |
| 118 | SirtRef<mirror::DexCache> dex_cache(self, declaring_class->GetDexCache()); |
| 119 | SirtRef<mirror::ClassLoader> class_loader(self, declaring_class->GetClassLoader()); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 120 | const DexFile& dex_file = *dex_cache->GetDexFile(); |
| 121 | resolved_method = ResolveMethod(dex_file, method_idx, dex_cache, class_loader, referrer, type); |
Ian Rogers | eebe03a | 2014-05-02 11:09:57 -0700 | [diff] [blame] | 122 | if (resolved_method != nullptr) { |
| 123 | DCHECK_EQ(dex_cache->GetResolvedMethod(method_idx), resolved_method); |
| 124 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 125 | } |
| 126 | return resolved_method; |
| 127 | } |
| 128 | |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 129 | inline mirror::ArtField* ClassLinker::ResolveField(uint32_t field_idx, |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 130 | mirror::ArtMethod* referrer, |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 131 | bool is_static) { |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 132 | mirror::Class* declaring_class = referrer->GetDeclaringClass(); |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 133 | mirror::ArtField* resolved_field = |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 134 | declaring_class->GetDexCache()->GetResolvedField(field_idx); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 135 | if (UNLIKELY(resolved_field == NULL)) { |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 136 | Thread* self = Thread::Current(); |
| 137 | SirtRef<mirror::DexCache> dex_cache(self, declaring_class->GetDexCache()); |
| 138 | SirtRef<mirror::ClassLoader> class_loader(self, declaring_class->GetClassLoader()); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 139 | const DexFile& dex_file = *dex_cache->GetDexFile(); |
| 140 | resolved_field = ResolveField(dex_file, field_idx, dex_cache, class_loader, is_static); |
Ian Rogers | eebe03a | 2014-05-02 11:09:57 -0700 | [diff] [blame] | 141 | if (resolved_field != nullptr) { |
| 142 | DCHECK_EQ(dex_cache->GetResolvedField(field_idx), resolved_field); |
| 143 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 144 | } |
| 145 | return resolved_field; |
| 146 | } |
| 147 | |
| 148 | template <class T> |
| 149 | inline mirror::ObjectArray<T>* ClassLinker::AllocObjectArray(Thread* self, size_t length) { |
| 150 | return mirror::ObjectArray<T>::Alloc(self, GetClassRoot(kObjectArrayClass), length); |
| 151 | } |
| 152 | |
| 153 | inline mirror::ObjectArray<mirror::Class>* ClassLinker::AllocClassArray(Thread* self, |
| 154 | size_t length) { |
| 155 | return mirror::ObjectArray<mirror::Class>::Alloc(self, GetClassRoot(kClassArrayClass), length); |
| 156 | } |
| 157 | |
| 158 | inline mirror::ObjectArray<mirror::String>* ClassLinker::AllocStringArray(Thread* self, |
| 159 | size_t length) { |
| 160 | return mirror::ObjectArray<mirror::String>::Alloc(self, GetClassRoot(kJavaLangStringArrayClass), |
| 161 | length); |
| 162 | } |
| 163 | |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 164 | inline mirror::ObjectArray<mirror::ArtMethod>* ClassLinker::AllocArtMethodArray(Thread* self, |
| 165 | size_t length) { |
| 166 | return mirror::ObjectArray<mirror::ArtMethod>::Alloc(self, |
| 167 | GetClassRoot(kJavaLangReflectArtMethodArrayClass), length); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | inline mirror::IfTable* ClassLinker::AllocIfTable(Thread* self, size_t ifcount) { |
| 171 | return down_cast<mirror::IfTable*>( |
| 172 | mirror::IfTable::Alloc(self, GetClassRoot(kObjectArrayClass), ifcount * mirror::IfTable::kMax)); |
| 173 | } |
| 174 | |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 175 | inline mirror::ObjectArray<mirror::ArtField>* ClassLinker::AllocArtFieldArray(Thread* self, |
| 176 | size_t length) { |
| 177 | return mirror::ObjectArray<mirror::ArtField>::Alloc(self, |
| 178 | GetClassRoot(kJavaLangReflectArtFieldArrayClass), |
| 179 | length); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 180 | } |
| 181 | |
| 182 | inline mirror::Class* ClassLinker::GetClassRoot(ClassRoot class_root) |
| 183 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 184 | DCHECK(class_roots_ != NULL); |
| 185 | mirror::Class* klass = class_roots_->Get(class_root); |
| 186 | DCHECK(klass != NULL); |
| 187 | return klass; |
| 188 | } |
| 189 | |
| 190 | } // namespace art |
| 191 | |
Brian Carlstrom | fc0e321 | 2013-07-17 14:40:12 -0700 | [diff] [blame] | 192 | #endif // ART_RUNTIME_CLASS_LINKER_INL_H_ |