Elliott Hughes | 2faa5f1 | 2012-01-30 14:42:07 -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 | */ |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 16 | |
Brian Carlstrom | fc0e321 | 2013-07-17 14:40:12 -0700 | [diff] [blame] | 17 | #ifndef ART_RUNTIME_MIRROR_CLASS_LOADER_H_ |
| 18 | #define ART_RUNTIME_MIRROR_CLASS_LOADER_H_ |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 19 | |
Andreas Gampe | 2ff3b97 | 2017-06-05 18:14:53 -0700 | [diff] [blame] | 20 | #include "base/mutex.h" |
Andreas Gampe | 8cf9cb3 | 2017-07-19 09:28:38 -0700 | [diff] [blame] | 21 | #include "obj_ptr.h" |
Ian Rogers | 7e70b00 | 2014-10-08 11:47:24 -0700 | [diff] [blame] | 22 | #include "object.h" |
Andreas Gampe | 2ff3b97 | 2017-06-05 18:14:53 -0700 | [diff] [blame] | 23 | #include "object_reference.h" |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 24 | |
| 25 | namespace art { |
| 26 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 27 | struct ClassLoaderOffsets; |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 28 | class ClassTable; |
Andreas Gampe | d482e73 | 2017-04-24 17:59:09 -0700 | [diff] [blame] | 29 | class LinearAlloc; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 30 | |
| 31 | namespace mirror { |
| 32 | |
Mathieu Chartier | e4275c0 | 2015-08-06 15:34:15 -0700 | [diff] [blame] | 33 | class Class; |
| 34 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 35 | // C++ mirror of java.lang.ClassLoader |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 36 | class MANAGED ClassLoader : public Object { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 37 | public: |
| 38 | // Size of an instance of java.lang.ClassLoader. |
| 39 | static constexpr uint32_t InstanceSize() { |
| 40 | return sizeof(ClassLoader); |
| 41 | } |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 42 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 43 | ClassLoader* GetParent() REQUIRES_SHARED(Locks::mutator_lock_) { |
Mathieu Chartier | 6bcae8f | 2014-09-04 18:33:17 -0700 | [diff] [blame] | 44 | return GetFieldObject<ClassLoader>(OFFSET_OF_OBJECT_MEMBER(ClassLoader, parent_)); |
| 45 | } |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 46 | |
Vladimir Marko | 98db89c | 2018-09-07 11:45:46 +0100 | [diff] [blame] | 47 | template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags> |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 48 | ClassTable* GetClassTable() REQUIRES_SHARED(Locks::mutator_lock_) { |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 49 | return reinterpret_cast<ClassTable*>( |
Vladimir Marko | 98db89c | 2018-09-07 11:45:46 +0100 | [diff] [blame] | 50 | GetField64<kVerifyFlags>(OFFSET_OF_OBJECT_MEMBER(ClassLoader, class_table_))); |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 51 | } |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 52 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 53 | void SetClassTable(ClassTable* class_table) REQUIRES_SHARED(Locks::mutator_lock_) { |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 54 | SetField64<false>(OFFSET_OF_OBJECT_MEMBER(ClassLoader, class_table_), |
| 55 | reinterpret_cast<uint64_t>(class_table)); |
| 56 | } |
Mathieu Chartier | 059ef3d | 2015-08-18 13:54:21 -0700 | [diff] [blame] | 57 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 58 | LinearAlloc* GetAllocator() REQUIRES_SHARED(Locks::mutator_lock_) { |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 59 | return reinterpret_cast<LinearAlloc*>( |
| 60 | GetField64(OFFSET_OF_OBJECT_MEMBER(ClassLoader, allocator_))); |
| 61 | } |
| 62 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 63 | void SetAllocator(LinearAlloc* allocator) REQUIRES_SHARED(Locks::mutator_lock_) { |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 64 | SetField64<false>(OFFSET_OF_OBJECT_MEMBER(ClassLoader, allocator_), |
| 65 | reinterpret_cast<uint64_t>(allocator)); |
| 66 | } |
| 67 | |
Mathieu Chartier | 059ef3d | 2015-08-18 13:54:21 -0700 | [diff] [blame] | 68 | private: |
Mathieu Chartier | e4275c0 | 2015-08-06 15:34:15 -0700 | [diff] [blame] | 69 | // Visit instance fields of the class loader as well as its associated classes. |
| 70 | // Null class loader is handled by ClassLinker::VisitClassRoots. |
Mathieu Chartier | fbc3108 | 2016-01-24 11:59:56 -0800 | [diff] [blame] | 71 | template <bool kVisitClasses, |
| 72 | VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, |
| 73 | ReadBarrierOption kReadBarrierOption = kWithReadBarrier, |
| 74 | typename Visitor> |
Mathieu Chartier | 31e8822 | 2016-10-14 18:43:19 -0700 | [diff] [blame] | 75 | void VisitReferences(ObjPtr<Class> klass, const Visitor& visitor) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 76 | REQUIRES_SHARED(Locks::mutator_lock_) |
Mathieu Chartier | e4275c0 | 2015-08-06 15:34:15 -0700 | [diff] [blame] | 77 | REQUIRES(!Locks::classlinker_classes_lock_); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 78 | |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 79 | // Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses". |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 80 | HeapReference<Object> packages_; |
| 81 | HeapReference<ClassLoader> parent_; |
| 82 | HeapReference<Object> proxyCache_; |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 83 | // Native pointer to class table, need to zero this out when image writing. |
| 84 | uint32_t padding_ ATTRIBUTE_UNUSED; |
Mathieu Chartier | 951ec2c | 2015-09-22 08:50:05 -0700 | [diff] [blame] | 85 | uint64_t allocator_; |
Mathieu Chartier | 6b06953 | 2015-08-05 15:08:12 -0700 | [diff] [blame] | 86 | uint64_t class_table_; |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 87 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 88 | friend struct art::ClassLoaderOffsets; // for verifying offset information |
Mathieu Chartier | 059ef3d | 2015-08-18 13:54:21 -0700 | [diff] [blame] | 89 | friend class Object; // For VisitReferences |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 90 | DISALLOW_IMPLICIT_CONSTRUCTORS(ClassLoader); |
| 91 | }; |
| 92 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 93 | } // namespace mirror |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 94 | } // namespace art |
| 95 | |
Brian Carlstrom | fc0e321 | 2013-07-17 14:40:12 -0700 | [diff] [blame] | 96 | #endif // ART_RUNTIME_MIRROR_CLASS_LOADER_H_ |