| /* |
| * 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 "object_utils.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 |
| Class* ArtField::java_lang_reflect_ArtField_ = NULL; |
| |
| ArtField* ArtField::FromReflectedField(const ScopedObjectAccess& soa, jobject jlr_field) { |
| mirror::ArtField* f = soa.DecodeField(WellKnownClasses::java_lang_reflect_Field_artField); |
| mirror::ArtField* field = f->GetObject(soa.Decode<mirror::Object*>(jlr_field))->AsArtField(); |
| DCHECK(field != nullptr); |
| return field; |
| } |
| |
| void ArtField::SetClass(Class* java_lang_reflect_ArtField) { |
| CHECK(java_lang_reflect_ArtField_ == NULL); |
| CHECK(java_lang_reflect_ArtField != NULL); |
| java_lang_reflect_ArtField_ = java_lang_reflect_ArtField; |
| } |
| |
| void ArtField::ResetClass() { |
| CHECK(java_lang_reflect_ArtField_ != NULL); |
| java_lang_reflect_ArtField_ = NULL; |
| } |
| |
| void ArtField::SetOffset(MemberOffset num_bytes) { |
| DCHECK(GetDeclaringClass()->IsLoaded() || GetDeclaringClass()->IsErroneous()); |
| if (kIsDebugBuild && Runtime::Current()->IsCompiler() && |
| !Runtime::Current()->UseCompileTimeClassPath()) { |
| Primitive::Type type = FieldHelper(this).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) { |
| if (java_lang_reflect_ArtField_ != nullptr) { |
| callback(reinterpret_cast<mirror::Object**>(&java_lang_reflect_ArtField_), arg, 0, |
| 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 |