| /* |
| * Copyright 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef SYSTEM_KEYMASTER_LOGGER_H_ |
| #define SYSTEM_KEYMASTER_LOGGER_H_ |
| |
| #include <stdarg.h> |
| |
| namespace keymaster { |
| |
| class Logger { |
| public: |
| Logger() {} |
| virtual ~Logger() {} |
| |
| enum LogLevel { |
| DEBUG_LVL, // Messages used only for debugging |
| INFO_LVL, // Informational messages; something is unusual but not wrong |
| WARNING_LVL, // There's an indication of trouble, but it may be okay. |
| ERROR_LVL, // A problem has occurred, but processing can continue |
| SEVERE_LVL, // A severe problem has occurred; likely indicates a defect. |
| }; |
| |
| virtual int log_msg(LogLevel level, const char* fmt, va_list args) const = 0; |
| |
| static int Log(LogLevel level, const char* fmt, va_list args); |
| static int Log(LogLevel level, const char* fmt, ...); |
| static int Debug(const char* fmt, ...); |
| static int Info(const char* fmt, ...); |
| static int Warning(const char* fmt, ...); |
| static int Error(const char* fmt, ...); |
| static int Severe(const char* fmt, ...); |
| |
| protected: |
| static void set_instance(Logger* logger) { instance_ = logger; } |
| |
| private: |
| // Disallow copying. |
| Logger(const Logger&); |
| void operator=(const Logger&); |
| |
| static Logger* instance_; |
| }; |
| |
| #define STR(x) #x |
| #define STRINGIFY(x) STR(x) |
| #define FILE_LINE __FILE__ ", Line " STRINGIFY(__LINE__) ": " |
| |
| #define LOG_D(fmt, ...) Logger::Debug(FILE_LINE fmt, __VA_ARGS__) |
| #define LOG_I(fmt, ...) Logger::Info(FILE_LINE fmt, __VA_ARGS__) |
| #define LOG_W(fmt, ...) Logger::Warning(FILE_LINE fmt, __VA_ARGS__) |
| #define LOG_E(fmt, ...) Logger::Error(FILE_LINE fmt, __VA_ARGS__) |
| #define LOG_S(fmt, ...) Logger::Severe(FILE_LINE fmt, __VA_ARGS__) |
| |
| } // namespace keymaster |
| |
| #endif // SYSTEM_KEYMASTER_LOGGER_H_ |