1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "ecmascript/ecma_vm.h"
17 #include "ecmascript/mem/barriers-inl.h"
18 #include "ecmascript/mem/heap.h"
19
20 namespace panda::ecmascript {
Update(uintptr_t slotAddr,Region * objectRegion,TaggedObject * value,Region * valueRegion)21 void Barriers::Update(uintptr_t slotAddr, Region *objectRegion, TaggedObject *value, Region *valueRegion)
22 {
23 JSThread* thread = valueRegion->GetJSThread();
24 auto heap = thread->GetEcmaVM()->GetHeap();
25 if (heap->IsFullMark()) {
26 if (valueRegion->InCollectSet() && !objectRegion->InYoungSpaceOrCSet()) {
27 objectRegion->AtomicInsertCrossRegionRSet(slotAddr);
28 }
29 } else {
30 if (!valueRegion->InYoungSpace()) {
31 return;
32 }
33 }
34
35 // Weak ref record and concurrent mark record maybe conflict.
36 // This conflict is solved by keeping alive weak reference. A small amount of floating garbage may be added.
37 TaggedObject *heapValue = JSTaggedValue(value).GetHeapObject();
38 if (valueRegion->AtomicMark(heapValue)) {
39 heap->GetWorkManager()->Push(0, heapValue, valueRegion);
40 }
41 }
42 } // namespace panda::ecmascript
43