97 lines
3.2 KiB
C++
97 lines
3.2 KiB
C++
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_RUNTIME_MIRROR_CLASS_LOADER_H_
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#define ART_RUNTIME_MIRROR_CLASS_LOADER_H_
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#include "base/locks.h"
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#include "obj_ptr.h"
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#include "object.h"
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#include "object_reference.h"
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namespace art {
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struct ClassLoaderOffsets;
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class ClassTable;
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class LinearAlloc;
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namespace mirror {
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class Class;
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// C++ mirror of java.lang.ClassLoader
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class MANAGED ClassLoader : public Object {
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public:
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MIRROR_CLASS("Ljava/lang/ClassLoader;");
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// Size of an instance of java.lang.ClassLoader.
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static constexpr uint32_t InstanceSize() {
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return sizeof(ClassLoader);
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}
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ObjPtr<ClassLoader> GetParent() REQUIRES_SHARED(Locks::mutator_lock_);
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template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags>
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ClassTable* GetClassTable() REQUIRES_SHARED(Locks::mutator_lock_) {
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return reinterpret_cast<ClassTable*>(
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GetField64<kVerifyFlags>(OFFSET_OF_OBJECT_MEMBER(ClassLoader, class_table_)));
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}
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void SetClassTable(ClassTable* class_table) REQUIRES_SHARED(Locks::mutator_lock_) {
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SetField64<false>(OFFSET_OF_OBJECT_MEMBER(ClassLoader, class_table_),
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reinterpret_cast<uint64_t>(class_table));
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}
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LinearAlloc* GetAllocator() REQUIRES_SHARED(Locks::mutator_lock_) {
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return reinterpret_cast<LinearAlloc*>(
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GetField64(OFFSET_OF_OBJECT_MEMBER(ClassLoader, allocator_)));
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}
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void SetAllocator(LinearAlloc* allocator) REQUIRES_SHARED(Locks::mutator_lock_) {
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SetField64<false>(OFFSET_OF_OBJECT_MEMBER(ClassLoader, allocator_),
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reinterpret_cast<uint64_t>(allocator));
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}
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private:
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// Visit instance fields of the class loader as well as its associated classes.
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// Null class loader is handled by ClassLinker::VisitClassRoots.
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template <bool kVisitClasses,
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VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
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ReadBarrierOption kReadBarrierOption = kWithReadBarrier,
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typename Visitor>
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void VisitReferences(ObjPtr<Class> klass, const Visitor& visitor)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::classlinker_classes_lock_);
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// Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses".
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HeapReference<Object> packages_;
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HeapReference<ClassLoader> parent_;
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HeapReference<Object> proxyCache_;
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// Native pointer to class table, need to zero this out when image writing.
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uint32_t padding_ ATTRIBUTE_UNUSED;
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uint64_t allocator_;
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uint64_t class_table_;
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friend struct art::ClassLoaderOffsets; // for verifying offset information
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friend class Object; // For VisitReferences
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DISALLOW_IMPLICIT_CONSTRUCTORS(ClassLoader);
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};
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} // namespace mirror
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} // namespace art
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#endif // ART_RUNTIME_MIRROR_CLASS_LOADER_H_
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