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#ifndef ART_RUNTIME_MIRROR_IFTABLE_H_
18#define ART_RUNTIME_MIRROR_IFTABLE_H_
19
20#include "object_array.h"
21
22namespace art {
23namespace mirror {
24
25class MANAGED IfTable : public ObjectArray<Object> {
26 public:
27  Class* GetInterface(int32_t i) const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
28    Class* interface = Get((i * kMax) + kInterface)->AsClass();
29    DCHECK(interface != NULL);
30    return interface;
31  }
32
33  void SetInterface(int32_t i, Class* interface) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
34
35  ObjectArray<ArtMethod>* GetMethodArray(int32_t i) const
36      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
37    ObjectArray<ArtMethod>* method_array =
38        down_cast<ObjectArray<ArtMethod>*>(Get((i * kMax) + kMethodArray));
39    DCHECK(method_array != NULL);
40    return method_array;
41  }
42
43  size_t GetMethodArrayCount(int32_t i) const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
44    ObjectArray<ArtMethod>* method_array =
45        down_cast<ObjectArray<ArtMethod>*>(Get((i * kMax) + kMethodArray));
46    if (method_array == NULL) {
47      return 0;
48    }
49    return method_array->GetLength();
50  }
51
52  void SetMethodArray(int32_t i, ObjectArray<ArtMethod>* new_ma)
53      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
54    DCHECK(new_ma != NULL);
55    DCHECK(Get((i * kMax) + kMethodArray) == NULL);
56    Set((i * kMax) + kMethodArray, new_ma);
57  }
58
59  size_t Count() const {
60    return GetLength() / kMax;
61  }
62
63  enum {
64    // Points to the interface class.
65    kInterface   = 0,
66    // Method pointers into the vtable, allow fast map from interface method index to concrete
67    // instance method.
68    kMethodArray = 1,
69    kMax         = 2,
70  };
71
72 private:
73  DISALLOW_IMPLICIT_CONSTRUCTORS(IfTable);
74};
75
76}  // namespace mirror
77}  // namespace art
78
79#endif  // ART_RUNTIME_MIRROR_IFTABLE_H_
80