98 lines
3.7 KiB
C++
98 lines
3.7 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_REFVISITOR_INL_H_
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#define ART_RUNTIME_MIRROR_CLASS_REFVISITOR_INL_H_
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#include "class-inl.h"
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#include "art_field-inl.h"
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#include "class_ext-inl.h"
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namespace art {
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namespace mirror {
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template <bool kVisitNativeRoots,
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VerifyObjectFlags kVerifyFlags,
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ReadBarrierOption kReadBarrierOption,
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typename Visitor>
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inline void Class::VisitReferences(ObjPtr<Class> klass, const Visitor& visitor) {
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VisitInstanceFieldsReferences<kVerifyFlags, kReadBarrierOption>(klass.Ptr(), visitor);
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// Right after a class is allocated, but not yet loaded
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// (ClassStatus::kNotReady, see ClassLinker::LoadClass()), GC may find it
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// and scan it. IsTemp() may call Class::GetAccessFlags() but may
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// fail in the DCHECK in Class::GetAccessFlags() because the class
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// status is ClassStatus::kNotReady. To avoid it, rely on IsResolved()
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// only. This is fine because a temp class never goes into the
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// ClassStatus::kResolved state.
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if (IsResolved<kVerifyFlags>()) {
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// Temp classes don't ever populate imt/vtable or static fields and they are not even
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// allocated with the right size for those. Also, unresolved classes don't have fields
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// linked yet.
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VisitStaticFieldsReferences<kVerifyFlags, kReadBarrierOption>(this, visitor);
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}
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if (kVisitNativeRoots) {
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// Since this class is reachable, we must also visit the associated roots when we scan it.
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VisitNativeRoots<kReadBarrierOption>(
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visitor, Runtime::Current()->GetClassLinker()->GetImagePointerSize());
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}
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}
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template<ReadBarrierOption kReadBarrierOption, class Visitor>
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void Class::VisitNativeRoots(Visitor& visitor, PointerSize pointer_size) {
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VisitFields<kReadBarrierOption>([&](ArtField* field) REQUIRES_SHARED(art::Locks::mutator_lock_) {
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field->VisitRoots(visitor);
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if (kIsDebugBuild && IsResolved()) {
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CHECK_EQ(field->GetDeclaringClass<kReadBarrierOption>(), this)
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<< GetStatus() << field->GetDeclaringClass()->PrettyClass() << " != " << PrettyClass();
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}
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});
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// Don't use VisitMethods because we don't want to hit the class-ext methods twice.
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for (ArtMethod& method : GetMethods(pointer_size)) {
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method.VisitRoots<kReadBarrierOption>(visitor, pointer_size);
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}
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ObjPtr<ClassExt> ext(GetExtData<kDefaultVerifyFlags, kReadBarrierOption>());
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if (!ext.IsNull()) {
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ext->VisitNativeRoots<kReadBarrierOption, Visitor>(visitor, pointer_size);
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}
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}
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template<ReadBarrierOption kReadBarrierOption, class Visitor>
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void Class::VisitMethods(Visitor visitor, PointerSize pointer_size) {
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for (ArtMethod& method : GetMethods(pointer_size)) {
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visitor(&method);
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}
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ObjPtr<ClassExt> ext(GetExtData<kDefaultVerifyFlags, kReadBarrierOption>());
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if (!ext.IsNull()) {
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ext->VisitMethods<kReadBarrierOption, Visitor>(visitor, pointer_size);
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}
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}
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template<ReadBarrierOption kReadBarrierOption, class Visitor>
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void Class::VisitFields(Visitor visitor) {
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for (ArtField& sfield : GetSFieldsUnchecked()) {
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visitor(&sfield);
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}
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for (ArtField& ifield : GetIFieldsUnchecked()) {
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visitor(&ifield);
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}
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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_REFVISITOR_INL_H_
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