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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.
*/
#include "art_field.h"
#include "art_field-inl.h"
#include "gc/accounting/card_table-inl.h"
#include "object-inl.h"
#include "object_array-inl.h"
#include "runtime.h"
#include "scoped_thread_state_change.h"
#include "utils.h"
#include "well_known_classes.h"
namespace art {
namespace mirror {
// TODO: Get global references for these
GcRoot<Class> ArtField::java_lang_reflect_ArtField_;
void ArtField::SetClass(Class* java_lang_reflect_ArtField) {
CHECK(java_lang_reflect_ArtField_.IsNull());
CHECK(java_lang_reflect_ArtField != NULL);
java_lang_reflect_ArtField_ = GcRoot<Class>(java_lang_reflect_ArtField);
}
void ArtField::ResetClass() {
CHECK(!java_lang_reflect_ArtField_.IsNull());
java_lang_reflect_ArtField_ = GcRoot<Class>(nullptr);
}
void ArtField::SetOffset(MemberOffset num_bytes) {
DCHECK(GetDeclaringClass()->IsLoaded() || GetDeclaringClass()->IsErroneous());
if (kIsDebugBuild && Runtime::Current()->IsAotCompiler() &&
!Runtime::Current()->UseCompileTimeClassPath()) {
Primitive::Type type = GetTypeAsPrimitiveType();
if (type == Primitive::kPrimDouble || type == Primitive::kPrimLong) {
DCHECK_ALIGNED(num_bytes.Uint32Value(), 8);
}
}
// Not called within a transaction.
SetField32<false>(OFFSET_OF_OBJECT_MEMBER(ArtField, offset_), num_bytes.Uint32Value());
}
void ArtField::VisitRoots(RootCallback* callback, void* arg) {
java_lang_reflect_ArtField_.VisitRootIfNonNull(callback, arg, RootInfo(kRootStickyClass));
}
// TODO: we could speed up the search if fields are ordered by offsets.
ArtField* ArtField::FindInstanceFieldWithOffset(mirror::Class* klass, uint32_t field_offset) {
DCHECK(klass != nullptr);
ObjectArray<ArtField>* instance_fields = klass->GetIFields();
if (instance_fields != nullptr) {
for (int32_t i = 0, e = instance_fields->GetLength(); i < e; ++i) {
mirror::ArtField* field = instance_fields->GetWithoutChecks(i);
if (field->GetOffset().Uint32Value() == field_offset) {
return field;
}
}
}
// We did not find field in the class: look into superclass.
if (klass->GetSuperClass() != NULL) {
return FindInstanceFieldWithOffset(klass->GetSuperClass(), field_offset);
} else {
return nullptr;
}
}
} // namespace mirror
} // namespace art
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