1 /*
2 * Copyright (C) 2010 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 _DALVIK_ALLOC_WRITEBARRIER
18 #define _DALVIK_ALLOC_WRITEBARRIER
19
20 /*
21 * Note writes to the heap. These functions must be called if a field
22 * of an Object in the heap changes, and before any GC safe-point. The
23 * call is not needed if NULL is stored in the field.
24 */
25
26 /*
27 * The address within the Object has been written, and perhaps changed.
28 */
dvmWriteBarrierField(const Object * obj,void * addr)29 INLINE void dvmWriteBarrierField(const Object *obj, void *addr)
30 {
31 dvmMarkCard(obj);
32 }
33
34 /*
35 * All of the Object may have changed.
36 */
dvmWriteBarrierObject(const Object * obj)37 INLINE void dvmWriteBarrierObject(const Object *obj)
38 {
39 dvmMarkCard(obj);
40 }
41
42 /*
43 * Some or perhaps all of the array indexes in the Array, greater than
44 * or equal to start and strictly less than end, have been written,
45 * and perhaps changed.
46 */
dvmWriteBarrierArray(const ArrayObject * obj,size_t start,size_t end)47 INLINE void dvmWriteBarrierArray(const ArrayObject *obj,
48 size_t start, size_t end)
49 {
50 dvmMarkCard((Object *)obj);
51 }
52
53 #endif /* _DALVIK_ALLOC_WRITEBARRIER */
54