1 /*
2 * Copyright (c) 2025 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 #ifndef COMMON_COMPONENTS_MUTATOR_MUTATOR_MANAGER_INL_H
17 #define COMMON_COMPONENTS_MUTATOR_MUTATOR_MANAGER_INL_H
18
19 #include "common_components/mutator/mutator_manager.h"
20
21 namespace common {
22 template<class STWFunction>
FlipMutators(STWParam & param,STWFunction && stwFunction,FlipFunction * flipFunction)23 void MutatorManager::FlipMutators(STWParam& param, STWFunction&& stwFunction, FlipFunction *flipFunction)
24 {
25 std::list<Mutator*> undoneMutators;
26 {
27 OHOS_HITRACE(HITRACE_LEVEL_COMMERCIAL, "Waiting-STW", "");
28 ScopedStopTheWorld stw(param);
29 OHOS_HITRACE(HITRACE_LEVEL_COMMERCIAL, param.stwReason, "");
30
31 stwFunction();
32 bool ignoreFinalizer = true;
33 // Hope process ui thread's flipFunction at last, so add the ui mutator at the end of undoeMuators list.
34 VisitAllMutators([&undoneMutators, flipFunction](Mutator& mutator) {
35 mutator.SetFlipFunction(flipFunction);
36 mutator.SetSuspensionFlag(MutatorBase::SuspensionType::SUSPENSION_FOR_PENDING_CALLBACK);
37 undoneMutators.push_front(&mutator);
38 }, ignoreFinalizer);
39 }
40 // Resume all mutator threads.
41 AcquireMutatorManagementWLock();
42 for (auto it = undoneMutators.begin(); it != undoneMutators.end();) {
43 bool hasDead = std::find(allMutatorList_.begin(), allMutatorList_.end(), *it) == allMutatorList_.end();
44 if (UNLIKELY(hasDead)) {
45 it = undoneMutators.erase(it);
46 continue;
47 }
48 Mutator* mutator = *it;
49 if (mutator->TryRunFlipFunction()) {
50 it = undoneMutators.erase(it);
51 continue;
52 }
53 it++;
54 }
55 // Wait for flipFunction running finish.
56 for (auto it = undoneMutators.begin(); it != undoneMutators.end(); it++) {
57 Mutator* mutator = *it;
58 mutator->WaitFlipFunctionFinish();
59 }
60 MutatorManagementWUnlock();
61 }
62 } // namespace common
63
64 #endif // COMMON_COMPONENTS_MUTATOR_MUTATOR_MANAGER_INL_H
65