1 /* 2 * Copyright (c) 2023 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_COMMON_INCLUDE_PURGEABLE_MEM_UTILS_H 17 #define OHOS_MEMORY_MEMMGR_COMMON_INCLUDE_PURGEABLE_MEM_UTILS_H 18 19 #include <string> 20 #include <vector> 21 22 #include "single_instance.h" 23 24 namespace OHOS { 25 namespace Memory { 26 struct PurgeableAshmInfo { 27 int sizeKB; 28 int minPriority; 29 std::string idWithTime; 30 }; 31 32 class PurgeableMemUtils { 33 DECLARE_SINGLE_INSTANCE(PurgeableMemUtils); 34 35 public: 36 bool GetPurgeableHeapInfo(int &reclaimableKB); 37 bool GetProcPurgeableHeapInfo(const int pid, int &reclaimableKB); 38 bool PurgeHeapAll(); 39 bool PurgeHeapMemcg(const std::string &memcgPath, const int sizeKB); 40 bool GetPurgeableAshmInfo(int &reclaimableKB, std::vector<PurgeableAshmInfo> &ashmInfoToReclaim); 41 bool PurgeAshmAll(); 42 bool PurgeAshmByIdWithTime(const std::string &idWithTime); 43 44 static const std::string PATH_PURGE_HEAP; 45 static const std::string PATH_PURGEABLE_ASHMEM; 46 static const std::string FILE_PURGE_MEMCG_HEAP; 47 static const std::string ACTIVE_PURGEABLE_HEAP; 48 static const std::string INACTIVE_PURGEABLE_HEAP; 49 static const std::string PINED_PURGEABLE_HEAP; 50 static const std::string PROC_PURGEABLE_HEAP; 51 static const std::string PROC_PINED_PURGEABLE_HEAP; 52 static const unsigned int ASHM_PARAM_SIZE_ONE_LINE; 53 static const unsigned int ASHM_ID_INDEX; 54 static const unsigned int ASHM_ADJ_INDEX; 55 static const unsigned int ASHM_REF_COUNT_INDEX; 56 static const unsigned int ASHM_PURGED_INDEX; 57 static const unsigned int ASHM_SIZE_INDEX; 58 static const unsigned int ASHM_TIME_INDEX; 59 static const unsigned int HEAPINFO_SIZE_ONE_LINE; 60 }; 61 } // namespace Memory 62 } // namespace OHOS 63 #endif // OHOS_MEMORY_MEMMGR_COMMON_INCLUDE_PURGEABLE_MEM_UTILS_H 64