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 #ifndef OHOS_MEMORY_MEMMGR_LOW_MEMORY_KILLER_H 17 #define OHOS_MEMORY_MEMMGR_LOW_MEMORY_KILLER_H 18 19 #include "event_handler.h" 20 #include "single_instance.h" 21 22 namespace OHOS { 23 namespace Memory { 24 class LowMemoryKiller { 25 DECLARE_SINGLE_INSTANCE_BASE(LowMemoryKiller); 26 27 public: 28 void PsiHandler(); 29 private: 30 LowMemoryKiller(); 31 ~LowMemoryKiller() = default; 32 std::pair<unsigned int, int> QueryKillMemoryPriorityPair(unsigned int currBufferKB, unsigned int &targetBufKB); 33 void PsiHandlerInner(); 34 int KillOneBundleByPrio(int minPrio); 35 bool GetEventHandler(); 36 std::shared_ptr<AppExecFwk::EventHandler> handler_; 37 38 bool initialized_ = false; 39 long calledCount = 0; 40 }; 41 } // namespace Memory 42 } // namespace OHOS 43 #endif // OHOS_MEMORY_MEMMGR_LOW_MEMORY_KILLER_H 44