1 // Copyright 2018 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef V8_HEAP_HEAP_WRITE_BARRIER_H_
6 #define V8_HEAP_HEAP_WRITE_BARRIER_H_
7 
8 #include "include/v8-internal.h"
9 #include "src/common/globals.h"
10 
11 namespace v8 {
12 namespace internal {
13 
14 class ArrayBufferExtension;
15 class Code;
16 class FixedArray;
17 class Heap;
18 class RelocInfo;
19 class EphemeronHashTable;
20 
21 // Note: In general it is preferred to use the macros defined in
22 // object-macros.h.
23 
24 // Combined write barriers.
25 void WriteBarrierForCode(Code host, RelocInfo* rinfo, Object value);
26 void WriteBarrierForCode(Code host, RelocInfo* rinfo, HeapObject value);
27 void WriteBarrierForCode(Code host);
28 
29 // Generational write barrier.
30 void GenerationalBarrier(HeapObject object, ObjectSlot slot, Object value);
31 void GenerationalBarrier(HeapObject object, ObjectSlot slot, HeapObject value);
32 void GenerationalBarrier(HeapObject object, MaybeObjectSlot slot,
33                          MaybeObject value);
34 void GenerationalEphemeronKeyBarrier(EphemeronHashTable table, ObjectSlot slot,
35                                      Object value);
36 void GenerationalBarrierForCode(Code host, RelocInfo* rinfo, HeapObject object);
37 
38 // Marking write barrier.
39 void MarkingBarrier(HeapObject object, ObjectSlot slot, Object value);
40 void MarkingBarrier(HeapObject object, ObjectSlot slot, HeapObject value);
41 void MarkingBarrier(HeapObject object, MaybeObjectSlot slot, MaybeObject value);
42 void MarkingBarrierForCode(Code host, RelocInfo* rinfo, HeapObject object);
43 
44 void MarkingBarrierForArrayBufferExtension(HeapObject object,
45                                            ArrayBufferExtension* extension);
46 
47 void MarkingBarrierForDescriptorArray(Heap* heap, HeapObject host,
48                                       HeapObject descriptor_array,
49                                       int number_of_own_descriptors);
50 
51 inline bool IsReadOnlyHeapObject(HeapObject object);
52 
53 }  // namespace internal
54 }  // namespace v8
55 
56 #endif  // V8_HEAP_HEAP_WRITE_BARRIER_H_
57