1 /* 2 * Copyright (C) 2013 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_OBJECT_CALLBACKS_H_ 18 #define ART_RUNTIME_OBJECT_CALLBACKS_H_ 19 20 #include "base/macros.h" 21 22 namespace art { 23 namespace mirror { 24 class Object; 25 template<class MirrorType> class HeapReference; 26 } // namespace mirror 27 28 // A callback for visiting an object in the heap. 29 typedef void (ObjectCallback)(mirror::Object* obj, void* arg); 30 31 class IsMarkedVisitor { 32 public: 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; 37 }; 38 39 class MarkObjectVisitor { 40 public: 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; 47 }; 48 49 } // namespace art 50 51 #endif // ART_RUNTIME_OBJECT_CALLBACKS_H_ 52
