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 LIBBPF_LOGGER_H 17 #define LIBBPF_LOGGER_H 18 19 #include <memory> 20 #include <string> 21 22 #include <unistd.h> 23 #include <fcntl.h> 24 25 #include "libbpf.h" 26 27 class LIBBPFLogger { 28 public: ~LIBBPFLogger()29 ~LIBBPFLogger() 30 { 31 if (fd_ >= 0) { 32 close(fd_); 33 } 34 } 35 36 static std::unique_ptr<LIBBPFLogger> MakeUnique(const std::string& logFile, int logLevel); 37 int Printf(int logLevel, const char* format, va_list args); 38 39 enum Constants:int { 40 MAX_LIBBPF_LOG_LEN = 1024, 41 }; 42 43 private: LIBBPFLogger(int logLevel)44 LIBBPFLogger(int logLevel):logLevel_ {logLevel} {} 45 int OpenLogFile(const std::string& logFile); 46 std::string GetLogFileName() const; 47 48 const int logLevel_ {LIBBPF_DEBUG}; 49 int fd_ {-1}; 50 }; 51 52 #endif