Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "art_field.h" |
| 18 | |
| 19 | #include "art_field-inl.h" |
| 20 | #include "gc/accounting/card_table-inl.h" |
| 21 | #include "mirror/object-inl.h" |
| 22 | #include "mirror/object_array-inl.h" |
| 23 | #include "runtime.h" |
| 24 | #include "scoped_thread_state_change.h" |
| 25 | #include "utils.h" |
| 26 | #include "well_known_classes.h" |
| 27 | |
| 28 | namespace art { |
| 29 | |
| 30 | ArtField::ArtField() : access_flags_(0), field_dex_idx_(0), offset_(0) { |
| 31 | declaring_class_ = GcRoot<mirror::Class>(nullptr); |
| 32 | } |
| 33 | |
| 34 | void ArtField::SetOffset(MemberOffset num_bytes) { |
| 35 | DCHECK(GetDeclaringClass()->IsLoaded() || GetDeclaringClass()->IsErroneous()); |
| 36 | if (kIsDebugBuild && Runtime::Current()->IsAotCompiler() && |
| 37 | Runtime::Current()->IsCompilingBootImage()) { |
| 38 | Primitive::Type type = GetTypeAsPrimitiveType(); |
| 39 | if (type == Primitive::kPrimDouble || type == Primitive::kPrimLong) { |
| 40 | DCHECK_ALIGNED(num_bytes.Uint32Value(), 8); |
| 41 | } |
| 42 | } |
| 43 | // Not called within a transaction. |
| 44 | offset_ = num_bytes.Uint32Value(); |
| 45 | } |
| 46 | |
| 47 | void ArtField::VisitRoots(RootVisitor* visitor) { |
| 48 | declaring_class_.VisitRoot(visitor, RootInfo(kRootStickyClass)); |
| 49 | } |
| 50 | |
| 51 | ArtField* ArtField::FindInstanceFieldWithOffset(mirror::Class* klass, uint32_t field_offset) { |
| 52 | DCHECK(klass != nullptr); |
| 53 | auto* instance_fields = klass->GetIFields(); |
| 54 | for (size_t i = 0, count = klass->NumInstanceFields(); i < count; ++i) { |
| 55 | if (instance_fields[i].GetOffset().Uint32Value() == field_offset) { |
| 56 | return &instance_fields[i]; |
| 57 | } |
| 58 | } |
| 59 | // We did not find field in the class: look into superclass. |
| 60 | return (klass->GetSuperClass() != nullptr) ? |
| 61 | FindInstanceFieldWithOffset(klass->GetSuperClass(), field_offset) : nullptr; |
| 62 | } |
| 63 | |
| 64 | } // namespace art |