1 // Copyright 2017 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 #include "src/heap/invalidated-slots.h"
6
7 #include "src/heap/invalidated-slots-inl.h"
8 #include "src/heap/memory-chunk.h"
9 #include "src/heap/spaces.h"
10 #include "src/objects/objects-inl.h"
11
12 namespace v8 {
13 namespace internal {
14
OldToOld(MemoryChunk * chunk)15 InvalidatedSlotsFilter InvalidatedSlotsFilter::OldToOld(MemoryChunk* chunk) {
16 return InvalidatedSlotsFilter(chunk, chunk->invalidated_slots<OLD_TO_OLD>(),
17 OLD_TO_OLD);
18 }
19
OldToNew(MemoryChunk * chunk)20 InvalidatedSlotsFilter InvalidatedSlotsFilter::OldToNew(MemoryChunk* chunk) {
21 return InvalidatedSlotsFilter(chunk, chunk->invalidated_slots<OLD_TO_NEW>(),
22 OLD_TO_NEW);
23 }
24
InvalidatedSlotsFilter(MemoryChunk * chunk,InvalidatedSlots * invalidated_slots,RememberedSetType remembered_set_type)25 InvalidatedSlotsFilter::InvalidatedSlotsFilter(
26 MemoryChunk* chunk, InvalidatedSlots* invalidated_slots,
27 RememberedSetType remembered_set_type) {
28 USE(remembered_set_type);
29 invalidated_slots = invalidated_slots ? invalidated_slots : &empty_;
30
31 iterator_ = invalidated_slots->begin();
32 iterator_end_ = invalidated_slots->end();
33 sentinel_ = chunk->area_end();
34
35 // Invoke NextInvalidatedObject twice, to initialize
36 // invalidated_start_ to the first invalidated object and
37 // next_invalidated_object_ to the second one.
38 NextInvalidatedObject();
39 NextInvalidatedObject();
40
41 #ifdef DEBUG
42 last_slot_ = chunk->area_start();
43 remembered_set_type_ = remembered_set_type;
44 #endif
45 }
46
OldToNew(MemoryChunk * chunk)47 InvalidatedSlotsCleanup InvalidatedSlotsCleanup::OldToNew(MemoryChunk* chunk) {
48 return InvalidatedSlotsCleanup(chunk, chunk->invalidated_slots<OLD_TO_NEW>());
49 }
50
NoCleanup(MemoryChunk * chunk)51 InvalidatedSlotsCleanup InvalidatedSlotsCleanup::NoCleanup(MemoryChunk* chunk) {
52 return InvalidatedSlotsCleanup(chunk, nullptr);
53 }
54
InvalidatedSlotsCleanup(MemoryChunk * chunk,InvalidatedSlots * invalidated_slots)55 InvalidatedSlotsCleanup::InvalidatedSlotsCleanup(
56 MemoryChunk* chunk, InvalidatedSlots* invalidated_slots) {
57 invalidated_slots_ = invalidated_slots ? invalidated_slots : &empty_;
58 iterator_ = invalidated_slots_->begin();
59 iterator_end_ = invalidated_slots_->end();
60 sentinel_ = chunk->area_end();
61
62 NextInvalidatedObject();
63
64 #ifdef DEBUG
65 last_free_ = chunk->area_start();
66 #endif
67 }
68
69 } // namespace internal
70 } // namespace v8
71