2 * Copyright (C) 2013 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef ART_RUNTIME_OBJECT_CALLBACKS_H_
18 #define ART_RUNTIME_OBJECT_CALLBACKS_H_
20 #include "base/macros.h"
25 template<class MirrorType> class HeapReference;
28 // A callback for visiting an object in the heap.
29 typedef void (ObjectCallback)(mirror::Object* obj, void* arg);
31 class IsMarkedVisitor {
33 virtual ~IsMarkedVisitor() {}
34 // Return null if an object is not marked, otherwise returns the new address of that object.
35 // May return the same address as the input if the object did not move.
36 virtual mirror::Object* IsMarked(mirror::Object* obj) = 0;
39 class MarkObjectVisitor {
41 virtual ~MarkObjectVisitor() {}
42 // Mark an object and return the new address of an object.
43 // May return the same address as the input if the object did not move.
44 virtual mirror::Object* MarkObject(mirror::Object* obj) = 0;
45 // Mark an object and update the value stored in the heap reference if the object moved.
46 virtual void MarkHeapReference(mirror::HeapReference<mirror::Object>* obj) = 0;
51 #endif // ART_RUNTIME_OBJECT_CALLBACKS_H_