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 "runtime/mem/gc/g1/hot_cards.h"
17 #include "libpandabase/macros.h"
18
19 namespace ark::mem {
20
UpdateCardsStatus()21 void HotCards::UpdateCardsStatus()
22 {
23 VisitHotCards([this](CardPtr card) {
24 auto cardValue = card->GetCard();
25 auto cardStatus = CardTable::Card::GetStatus(cardValue);
26
27 ASSERT_PRINT(!CardTable::Card::IsProcessed(cardStatus) && !CardTable::Card::IsYoung(cardStatus),
28 "UpdateHotCardStatus card: " << card << " cardValue: " << (int)cardValue);
29
30 if (CardTable::Card::IsMarked(cardStatus)) {
31 SetHotAndMaxHotValue(card, cardValue & RESET_MARK_MASK);
32 unprocessedCards_.insert(card);
33 }
34 });
35 }
36
PushCard(CardPtr card)37 void HotCards::PushCard(CardPtr card)
38 {
39 ASSERT(card->IsHot());
40 hotCards_.insert(card);
41 }
42
DecrementHotValue()43 void HotCards::DecrementHotValue()
44 {
45 VisitHotCards([](CardPtr card) {
46 auto cardValue = card->GetCard();
47 auto cardStatus = Card::GetStatus(cardValue);
48
49 ASSERT_PRINT(!CardTable::Card::IsProcessed(cardStatus) && !CardTable::Card::IsYoung(cardStatus),
50 "DecrementHotValue card: " << card << " cardValue: " << (int)cardValue);
51
52 if (Card::IsMarked(cardStatus) || !Card::IsHot(cardValue)) {
53 return;
54 }
55
56 if (Card::IsMinHotValue(cardValue)) {
57 card->ResetHot();
58 return;
59 }
60 card->DecrementHotValue();
61 });
62 }
63
DrainMarkedCards(PandaUnorderedSet<CardPtr> * markedCards)64 void HotCards::DrainMarkedCards(PandaUnorderedSet<CardPtr> *markedCards)
65 {
66 auto cardIt = hotCards_.begin();
67 while (cardIt != hotCards_.end()) {
68 auto *cardPtr = *cardIt;
69 auto cardValue = cardPtr->GetCard();
70 auto cardStatus = CardTable::Card::GetStatus(cardValue);
71 if (CardTable::Card::IsMarked(cardStatus)) {
72 markedCards->insert(cardPtr);
73 }
74 ResetHot(cardPtr, cardValue);
75 cardIt = hotCards_.erase(cardIt);
76 }
77 markedCards->insert(unprocessedCards_.begin(), unprocessedCards_.end());
78 unprocessedCards_.clear();
79 }
80
ClearHotCards()81 void HotCards::ClearHotCards()
82 {
83 auto cardIt = hotCards_.begin();
84 while (cardIt != hotCards_.end()) {
85 (*cardIt)->ResetHot();
86 cardIt = hotCards_.erase(cardIt);
87 }
88 ASSERT(unprocessedCards_.empty());
89 }
90
91 } // namespace ark::mem
92