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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_RUNTIME_MIRROR_OBJECT_REFVISITOR_INL_H_
#define ART_RUNTIME_MIRROR_OBJECT_REFVISITOR_INL_H_
#include "object-inl.h"
#include "class-refvisitor-inl.h"
#include "class_loader-inl.h"
#include "dex_cache-inl.h"
namespace art {
namespace mirror {
template <bool kVisitNativeRoots,
VerifyObjectFlags kVerifyFlags,
ReadBarrierOption kReadBarrierOption,
typename Visitor,
typename JavaLangRefVisitor>
inline void Object::VisitReferences(const Visitor& visitor,
const JavaLangRefVisitor& ref_visitor) {
visitor(this, ClassOffset(), /* is_static= */ false);
ObjPtr<Class> klass = GetClass<kVerifyFlags, kReadBarrierOption>();
const uint32_t class_flags = klass->GetClassFlags<kVerifyNone>();
if (LIKELY(class_flags == kClassFlagNormal)) {
DCHECK((!klass->IsVariableSize<kVerifyFlags>()));
VisitInstanceFieldsReferences<kVerifyFlags, kReadBarrierOption>(klass, visitor);
DCHECK((!klass->IsClassClass<kVerifyFlags>()));
DCHECK(!klass->IsStringClass<kVerifyFlags>());
DCHECK(!klass->IsClassLoaderClass<kVerifyFlags>());
DCHECK((!klass->IsArrayClass<kVerifyFlags>()));
} else {
if ((class_flags & kClassFlagNoReferenceFields) == 0) {
DCHECK(!klass->IsStringClass<kVerifyFlags>());
if (class_flags == kClassFlagClass) {
DCHECK((klass->IsClassClass<kVerifyFlags>()));
ObjPtr<Class> as_klass = AsClass<kVerifyNone>();
as_klass->VisitReferences<kVisitNativeRoots, kVerifyFlags, kReadBarrierOption>(klass,
visitor);
} else if (class_flags == kClassFlagObjectArray) {
DCHECK((klass->IsObjectArrayClass<kVerifyFlags>()));
AsObjectArray<mirror::Object, kVerifyNone>()->VisitReferences(visitor);
} else if ((class_flags & kClassFlagReference) != 0) {
VisitInstanceFieldsReferences<kVerifyFlags, kReadBarrierOption>(klass, visitor);
ref_visitor(klass, AsReference<kVerifyFlags, kReadBarrierOption>());
} else if (class_flags == kClassFlagDexCache) {
ObjPtr<mirror::DexCache> const dex_cache = AsDexCache<kVerifyFlags, kReadBarrierOption>();
dex_cache->VisitReferences<kVisitNativeRoots,
kVerifyFlags,
kReadBarrierOption>(klass, visitor);
} else {
ObjPtr<mirror::ClassLoader> const class_loader =
AsClassLoader<kVerifyFlags, kReadBarrierOption>();
class_loader->VisitReferences<kVisitNativeRoots,
kVerifyFlags,
kReadBarrierOption>(klass, visitor);
}
} else if (kIsDebugBuild) {
CHECK((!klass->IsClassClass<kVerifyFlags>()));
CHECK((!klass->IsObjectArrayClass<kVerifyFlags>()));
// String still has instance fields for reflection purposes but these don't exist in
// actual string instances.
if (!klass->IsStringClass<kVerifyFlags>()) {
size_t total_reference_instance_fields = 0;
ObjPtr<Class> super_class = klass;
do {
total_reference_instance_fields +=
super_class->NumReferenceInstanceFields<kVerifyFlags>();
super_class = super_class->GetSuperClass<kVerifyFlags, kReadBarrierOption>();
} while (super_class != nullptr);
// The only reference field should be the object's class. This field is handled at the
// beginning of the function.
CHECK_EQ(total_reference_instance_fields, 1u);
}
}
}
}
} // namespace mirror
} // namespace art
#endif // ART_RUNTIME_MIRROR_OBJECT_REFVISITOR_INL_H_
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