1 /* 2 * Copyright (c) 2021 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 #ifndef DUMP_UTILS_H 16 #define DUMP_UTILS_H 17 #include <string> 18 #include <vector> 19 #include <unistd.h> 20 namespace OHOS { 21 namespace HiviewDFX { 22 #ifndef TEMP_FAILURE_RETRY 23 #define TEMP_FAILURE_RETRY 24 #endif 25 class DumpUtils { 26 public: 27 // system operations 28 static void IgnoreOom(); 29 static void IgnorePipeQuit(); 30 static void IgnoreStdoutCache(); 31 static void SetAdj(int adj); 32 static void BoostPriority(); 33 34 // string operations 35 static void RemoveDuplicateString(std::vector<std::string> &vector); 36 37 // file operations 38 static bool FileWriteable(const std::string &file); 39 static int FdToRead(const std::string &file); 40 static int FdToWrite(const std::string &file); 41 42 // process operations 43 static bool CheckProcessAlive(uint32_t pid); 44 45 // ability string to ID 46 static int StrToId(const std::string &name); // 0:invalid 47 static std::string ConvertSaIdToSaName(const std::string &saIdStr); 48 49 static bool DirectoryExists(const std::string &path); 50 static bool PathIsValid(const std::string &path); 51 static bool CopyFile(const std::string &src, const std::string &des); 52 53 static constexpr int TOP_PRIORITY = -20; 54 static constexpr int TOP_OOM_ADJ = -1000; 55 static constexpr char FILE_CUR_OOM_ADJ[] = "/proc/self/oom_score_adj"; 56 static constexpr auto& SPACE = " "; 57 static const int INVALID_PID = -1; 58 private: 59 static std::string ErrnoToMsg(const int &error); 60 }; 61 } // namespace HiviewDFX 62 } // namespace OHOS 63 #endif 64