Andreas Gampe | c6ea7d0 | 2017-02-01 16:46:28 -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 | |
| 17 | #ifndef ART_RUNTIME_MIRROR_OBJECT_REFVISITOR_INL_H_ |
| 18 | #define ART_RUNTIME_MIRROR_OBJECT_REFVISITOR_INL_H_ |
| 19 | |
| 20 | #include "object-inl.h" |
| 21 | |
| 22 | #include "class-refvisitor-inl.h" |
Andreas Gampe | 8cf9cb3 | 2017-07-19 09:28:38 -0700 | [diff] [blame] | 23 | #include "class_loader-inl.h" |
Andreas Gampe | 2ff3b97 | 2017-06-05 18:14:53 -0700 | [diff] [blame] | 24 | #include "dex_cache-inl.h" |
Andreas Gampe | c6ea7d0 | 2017-02-01 16:46:28 -0800 | [diff] [blame] | 25 | |
| 26 | namespace art { |
| 27 | namespace mirror { |
| 28 | |
| 29 | template <bool kVisitNativeRoots, |
| 30 | VerifyObjectFlags kVerifyFlags, |
| 31 | ReadBarrierOption kReadBarrierOption, |
| 32 | typename Visitor, |
| 33 | typename JavaLangRefVisitor> |
| 34 | inline void Object::VisitReferences(const Visitor& visitor, |
| 35 | const JavaLangRefVisitor& ref_visitor) { |
| 36 | ObjPtr<Class> klass = GetClass<kVerifyFlags, kReadBarrierOption>(); |
| 37 | visitor(this, ClassOffset(), false); |
| 38 | const uint32_t class_flags = klass->GetClassFlags<kVerifyNone>(); |
| 39 | if (LIKELY(class_flags == kClassFlagNormal)) { |
Vladimir Marko | 98db89c | 2018-09-07 11:45:46 +0100 | [diff] [blame] | 40 | DCHECK((!klass->IsVariableSize<kVerifyFlags>())); |
Andreas Gampe | c6ea7d0 | 2017-02-01 16:46:28 -0800 | [diff] [blame] | 41 | VisitInstanceFieldsReferences<kVerifyFlags, kReadBarrierOption>(klass, visitor); |
Mathieu Chartier | d7a7f2f | 2018-09-07 11:57:18 -0700 | [diff] [blame] | 42 | DCHECK((!klass->IsClassClass<kVerifyFlags>())); |
Vladimir Marko | 98db89c | 2018-09-07 11:45:46 +0100 | [diff] [blame] | 43 | DCHECK(!klass->IsStringClass<kVerifyFlags>()); |
| 44 | DCHECK(!klass->IsClassLoaderClass<kVerifyFlags>()); |
| 45 | DCHECK((!klass->IsArrayClass<kVerifyFlags>())); |
Andreas Gampe | c6ea7d0 | 2017-02-01 16:46:28 -0800 | [diff] [blame] | 46 | } else { |
| 47 | if ((class_flags & kClassFlagNoReferenceFields) == 0) { |
Vladimir Marko | 98db89c | 2018-09-07 11:45:46 +0100 | [diff] [blame] | 48 | DCHECK(!klass->IsStringClass<kVerifyFlags>()); |
Andreas Gampe | c6ea7d0 | 2017-02-01 16:46:28 -0800 | [diff] [blame] | 49 | if (class_flags == kClassFlagClass) { |
Mathieu Chartier | d7a7f2f | 2018-09-07 11:57:18 -0700 | [diff] [blame] | 50 | DCHECK((klass->IsClassClass<kVerifyFlags>())); |
| 51 | ObjPtr<Class> as_klass = AsClass<kVerifyNone>(); |
Andreas Gampe | c6ea7d0 | 2017-02-01 16:46:28 -0800 | [diff] [blame] | 52 | as_klass->VisitReferences<kVisitNativeRoots, kVerifyFlags, kReadBarrierOption>(klass, |
| 53 | visitor); |
| 54 | } else if (class_flags == kClassFlagObjectArray) { |
Vladimir Marko | 98db89c | 2018-09-07 11:45:46 +0100 | [diff] [blame] | 55 | DCHECK((klass->IsObjectArrayClass<kVerifyFlags>())); |
| 56 | AsObjectArray<mirror::Object, kVerifyNone>()->VisitReferences(visitor); |
Andreas Gampe | c6ea7d0 | 2017-02-01 16:46:28 -0800 | [diff] [blame] | 57 | } else if ((class_flags & kClassFlagReference) != 0) { |
| 58 | VisitInstanceFieldsReferences<kVerifyFlags, kReadBarrierOption>(klass, visitor); |
| 59 | ref_visitor(klass, AsReference<kVerifyFlags, kReadBarrierOption>()); |
| 60 | } else if (class_flags == kClassFlagDexCache) { |
| 61 | mirror::DexCache* const dex_cache = AsDexCache<kVerifyFlags, kReadBarrierOption>(); |
| 62 | dex_cache->VisitReferences<kVisitNativeRoots, |
| 63 | kVerifyFlags, |
| 64 | kReadBarrierOption>(klass, visitor); |
| 65 | } else { |
| 66 | mirror::ClassLoader* const class_loader = AsClassLoader<kVerifyFlags, kReadBarrierOption>(); |
| 67 | class_loader->VisitReferences<kVisitNativeRoots, |
| 68 | kVerifyFlags, |
| 69 | kReadBarrierOption>(klass, visitor); |
| 70 | } |
| 71 | } else if (kIsDebugBuild) { |
Mathieu Chartier | d7a7f2f | 2018-09-07 11:57:18 -0700 | [diff] [blame] | 72 | CHECK((!klass->IsClassClass<kVerifyFlags>())); |
Vladimir Marko | 98db89c | 2018-09-07 11:45:46 +0100 | [diff] [blame] | 73 | CHECK((!klass->IsObjectArrayClass<kVerifyFlags>())); |
Andreas Gampe | c6ea7d0 | 2017-02-01 16:46:28 -0800 | [diff] [blame] | 74 | // String still has instance fields for reflection purposes but these don't exist in |
| 75 | // actual string instances. |
Vladimir Marko | 98db89c | 2018-09-07 11:45:46 +0100 | [diff] [blame] | 76 | if (!klass->IsStringClass<kVerifyFlags>()) { |
Andreas Gampe | c6ea7d0 | 2017-02-01 16:46:28 -0800 | [diff] [blame] | 77 | size_t total_reference_instance_fields = 0; |
| 78 | ObjPtr<Class> super_class = klass; |
| 79 | do { |
Vladimir Marko | 98db89c | 2018-09-07 11:45:46 +0100 | [diff] [blame] | 80 | total_reference_instance_fields += |
| 81 | super_class->NumReferenceInstanceFields<kVerifyFlags>(); |
Andreas Gampe | c6ea7d0 | 2017-02-01 16:46:28 -0800 | [diff] [blame] | 82 | super_class = super_class->GetSuperClass<kVerifyFlags, kReadBarrierOption>(); |
| 83 | } while (super_class != nullptr); |
| 84 | // The only reference field should be the object's class. This field is handled at the |
| 85 | // beginning of the function. |
| 86 | CHECK_EQ(total_reference_instance_fields, 1u); |
| 87 | } |
| 88 | } |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | } // namespace mirror |
| 93 | } // namespace art |
| 94 | |
| 95 | #endif // ART_RUNTIME_MIRROR_OBJECT_REFVISITOR_INL_H_ |