1 /*
2 * Copyright (c) 2024 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/mem/shared_heap/shared_full_gc.h"
17
18 #include "ecmascript/mem/shared_heap/shared_concurrent_marker.h"
19 #include "ecmascript/mem/shared_heap/shared_concurrent_sweeper.h"
20 #include "ecmascript/mem/shared_heap/shared_gc_marker-inl.h"
21
22 namespace panda::ecmascript {
RunPhases()23 void SharedFullGC::RunPhases()
24 {
25 ECMA_BYTRACE_NAME(HITRACE_TAG_ARK, "SharedFullGC::RunPhases;Reason"
26 + std::to_string(static_cast<int>(sHeap_->GetEcmaGCStats()->GetGCReason()))
27 + ";Sensitive" + std::to_string(static_cast<int>(sHeap_->GetSensitiveStatus()))
28 + ";IsInBackground" + std::to_string(sHeap_->IsInBackground())
29 + ";Startup" + std::to_string(static_cast<int>(sHeap_->GetStartupStatus()))
30 + ";Old" + std::to_string(sHeap_->GetOldSpace()->GetCommittedSize())
31 + ";huge" + std::to_string(sHeap_->GetHugeObjectSpace()->GetCommittedSize())
32 + ";NonMov" + std::to_string(sHeap_->GetNonMovableSpace()->GetCommittedSize())
33 + ";TotCommit" + std::to_string(sHeap_->GetCommittedSize())
34 + ";NativeBindingSize" + std::to_string(sHeap_->GetNativeSizeAfterLastGC())
35 + ";NativeLimitGC" + std::to_string(sHeap_->GetNativeSizeTriggerSharedGC())
36 + ";NativeLimitCM" + std::to_string(sHeap_->GetNativeSizeTriggerSharedCM()));
37 TRACE_GC(GCStats::Scope::ScopeId::TotalGC, sHeap_->GetEcmaGCStats());
38 Initialize();
39 Mark();
40 Sweep();
41 Finish();
42 }
43
Initialize()44 void SharedFullGC::Initialize()
45 {
46 ECMA_BYTRACE_NAME(HITRACE_TAG_ARK, "SharedFullGC::Initialize");
47 TRACE_GC(GCStats::Scope::ScopeId::Initialize, sHeap_->GetEcmaGCStats());
48 sHeap_->Prepare(true);
49 if (UNLIKELY(sHeap_->CheckOngoingConcurrentMarking())) {
50 // Concurrent shared mark should always trigger shared gc without moving.
51 sHeap_->GetConcurrentMarker()->Reset(true);
52 }
53 sHeap_->GetAppSpawnSpace()->EnumerateRegions([](Region *current) {
54 current->ClearMarkGCBitset();
55 current->ClearCrossRegionRSet();
56 });
57 sHeap_->EnumerateOldSpaceRegions([](Region *current) {
58 ASSERT(current->InSharedSweepableSpace());
59 current->ResetAliveObject();
60 });
61 sWorkManager_->Initialize(TriggerGCType::SHARED_FULL_GC, SharedParallelMarkPhase::SHARED_COMPRESS_TASK);
62 }
63
MarkRoots(SharedMarkType markType,VMRootVisitType type)64 void SharedFullGC::MarkRoots(SharedMarkType markType, VMRootVisitType type)
65 {
66 SharedGCMovableMarker *marker = static_cast<SharedGCMovableMarker*>(sHeap_->GetSharedGCMovableMarker());
67 SharedFullGCMarkRootVisitor sharedFullGCMarkRootVisitor(marker, DAEMON_THREAD_INDEX);
68 marker->MarkRoots(sharedFullGCMarkRootVisitor, markType, type);
69 }
70
Mark()71 void SharedFullGC::Mark()
72 {
73 ECMA_BYTRACE_NAME(HITRACE_TAG_ARK, "SharedFullGC::Mark");
74 TRACE_GC(GCStats::Scope::ScopeId::Mark, sHeap_->GetEcmaGCStats());
75 SharedGCMovableMarker *marker = sHeap_->GetSharedGCMovableMarker();
76
77 MarkRoots(SharedMarkType::NOT_CONCURRENT_MARK, VMRootVisitType::UPDATE_ROOT);
78 marker->DoMark<SharedMarkType::NOT_CONCURRENT_MARK>(DAEMON_THREAD_INDEX);
79 marker->MergeBackAndResetRSetWorkListHandler();
80 sHeap_->WaitRunningTaskFinished();
81 }
82
Sweep()83 void SharedFullGC::Sweep()
84 {
85 ECMA_BYTRACE_NAME(HITRACE_TAG_ARK, "SharedFullGC::Sweep");
86 TRACE_GC(GCStats::Scope::ScopeId::Sweep, sHeap_->GetEcmaGCStats());
87 UpdateRecordWeakReference();
88 WeakRootVisitor gcUpdateWeak = [](TaggedObject *header) {
89 Region *objectRegion = Region::ObjectAddressToRange(header);
90 if (!objectRegion) {
91 LOG_GC(ERROR) << "SharedFullGC updateWeakReference: region is nullptr, header is " << header;
92 return reinterpret_cast<TaggedObject *>(ToUintPtr(nullptr));
93 }
94 if (objectRegion->InSharedOldSpace()) {
95 MarkWord markWord(header);
96 if (markWord.IsForwardingAddress()) {
97 return markWord.ToForwardingAddress();
98 }
99 return reinterpret_cast<TaggedObject *>(ToUintPtr(nullptr));
100 }
101 if (!objectRegion->InSharedSweepableSpace() || objectRegion->Test(header)) {
102 return header;
103 }
104 return reinterpret_cast<TaggedObject *>(ToUintPtr(nullptr));
105 };
106 auto stringTableCleaner = Runtime::GetInstance()->GetEcmaStringTable()->GetCleaner();
107 stringTableCleaner->PostSweepWeakRefTask(gcUpdateWeak);
108 Runtime::GetInstance()->ProcessNativeDeleteInSharedGC(gcUpdateWeak);
109 Runtime::GetInstance()->ProcessSharedNativeDelete(gcUpdateWeak);
110
111 Runtime::GetInstance()->GCIterateThreadList([&](JSThread *thread) {
112 ASSERT(!thread->IsInRunningState());
113 thread->IterateWeakEcmaGlobalStorage(gcUpdateWeak, GCKind::SHARED_GC);
114 const_cast<Heap*>(thread->GetEcmaVM()->GetHeap())->ResetTlab();
115 thread->ClearContextCachedConstantPool();
116 });
117
118 stringTableCleaner->JoinAndWaitSweepWeakRefTask(gcUpdateWeak);
119 sHeap_->GetSweeper()->Sweep(true);
120 sHeap_->GetSweeper()->PostTask(true);
121 }
122
Finish()123 void SharedFullGC::Finish()
124 {
125 ECMA_BYTRACE_NAME(HITRACE_TAG_ARK, "SharedFullGC::Finish");
126 TRACE_GC(GCStats::Scope::ScopeId::Finish, sHeap_->GetEcmaGCStats());
127 sHeap_->SwapOldSpace();
128 sWorkManager_->Finish();
129 if (!isAppspawn_) {
130 sHeap_->Reclaim(TriggerGCType::SHARED_FULL_GC);
131 } else {
132 sHeap_->ReclaimForAppSpawn();
133 }
134
135 sHeap_->GetSweeper()->TryFillSweptRegion();
136 }
137
UpdateRecordWeakReference()138 void SharedFullGC::UpdateRecordWeakReference()
139 {
140 auto totalThreadCount = Taskpool::GetCurrentTaskpool()->GetTotalThreadNum() + 1;
141 for (uint32_t i = 0; i < totalThreadCount; i++) {
142 ProcessQueue *queue = sHeap_->GetWorkManager()->GetWeakReferenceQueue(i);
143
144 while (true) {
145 auto obj = queue->PopBack();
146 if (UNLIKELY(obj == nullptr)) {
147 break;
148 }
149 ObjectSlot slot(ToUintPtr(obj));
150 JSTaggedValue value(slot.GetTaggedType());
151 ASSERT(value.IsWeak());
152 auto header = value.GetTaggedWeakRef();
153 Region *objectRegion = Region::ObjectAddressToRange(header);
154 if (!objectRegion->InSharedOldSpace()) {
155 if (!objectRegion->Test(header)) {
156 slot.Clear();
157 }
158 } else {
159 MarkWord markWord(header);
160 if (markWord.IsForwardingAddress()) {
161 TaggedObject *dst = markWord.ToForwardingAddress();
162 auto weakRef = JSTaggedValue(JSTaggedValue(dst).CreateAndGetWeakRef()).GetRawTaggedObject();
163 slot.Update(weakRef);
164 } else {
165 slot.Clear();
166 }
167 }
168 }
169 }
170 }
171
HasEvacuated(Region * region)172 bool SharedFullGC::HasEvacuated(Region *region)
173 {
174 auto marker = reinterpret_cast<SharedGCMovableMarker *>(sHeap_->GetSharedGCMovableMarker());
175 return marker->NeedEvacuate(region);
176 }
177
ResetWorkManager(SharedGCWorkManager * sWorkManager)178 void SharedFullGC::ResetWorkManager(SharedGCWorkManager *sWorkManager)
179 {
180 sWorkManager_ = sWorkManager;
181 }
182 } // namespace panda::ecmascript
183