Brian Silverman | f7bd1c2 | 2015-12-24 16:07:11 -0800 | [diff] [blame^] | 1 | /*----------------------------------------------------------------------------*/ |
| 2 | /* Copyright (c) FIRST 2015. All Rights Reserved. */ |
| 3 | /* Open Source Software - may be modified and shared by FRC teams. The code */ |
| 4 | /* must be accompanied by the FIRST BSD license file in the root directory of */ |
| 5 | /* the project. */ |
| 6 | /*----------------------------------------------------------------------------*/ |
| 7 | |
| 8 | #ifndef NT_LOG_H_ |
| 9 | #define NT_LOG_H_ |
| 10 | |
| 11 | #include <functional> |
| 12 | #include <sstream> |
| 13 | #include <string> |
| 14 | |
| 15 | #include "atomic_static.h" |
| 16 | #include "ntcore_c.h" |
| 17 | |
| 18 | namespace nt { |
| 19 | |
| 20 | class Logger { |
| 21 | public: |
| 22 | static Logger& GetInstance() { |
| 23 | ATOMIC_STATIC(Logger, instance); |
| 24 | return instance; |
| 25 | } |
| 26 | ~Logger(); |
| 27 | |
| 28 | typedef std::function<void(unsigned int level, const char* file, |
| 29 | unsigned int line, const char* msg)> LogFunc; |
| 30 | |
| 31 | void SetLogger(LogFunc func) { m_func = func; } |
| 32 | |
| 33 | void set_min_level(unsigned int level) { m_min_level = level; } |
| 34 | unsigned int min_level() const { return m_min_level; } |
| 35 | |
| 36 | void Log(unsigned int level, const char* file, unsigned int line, |
| 37 | const char* msg) { |
| 38 | if (!m_func || level < m_min_level) return; |
| 39 | m_func(level, file, line, msg); |
| 40 | } |
| 41 | |
| 42 | bool HasLogger() const { return m_func != nullptr; } |
| 43 | |
| 44 | private: |
| 45 | Logger(); |
| 46 | |
| 47 | LogFunc m_func; |
| 48 | unsigned int m_min_level = 20; |
| 49 | |
| 50 | ATOMIC_STATIC_DECL(Logger) |
| 51 | }; |
| 52 | |
| 53 | #define LOG(level, x) \ |
| 54 | do { \ |
| 55 | nt::Logger& logger = nt::Logger::GetInstance(); \ |
| 56 | if (logger.min_level() <= level && logger.HasLogger()) { \ |
| 57 | std::ostringstream oss; \ |
| 58 | oss << x; \ |
| 59 | logger.Log(level, __FILE__, __LINE__, oss.str().c_str()); \ |
| 60 | } \ |
| 61 | } while (0) |
| 62 | |
| 63 | #undef ERROR |
| 64 | #define ERROR(x) LOG(NT_LOG_ERROR, x) |
| 65 | #define WARNING(x) LOG(NT_LOG_WARNING, x) |
| 66 | #define INFO(x) LOG(NT_LOG_INFO, x) |
| 67 | |
| 68 | #ifdef NDEBUG |
| 69 | #define DEBUG(x) do {} while (0) |
| 70 | #define DEBUG1(x) do {} while (0) |
| 71 | #define DEBUG2(x) do {} while (0) |
| 72 | #define DEBUG3(x) do {} while (0) |
| 73 | #define DEBUG4(x) do {} while (0) |
| 74 | #else |
| 75 | #define DEBUG(x) LOG(NT_LOG_DEBUG, x) |
| 76 | #define DEBUG1(x) LOG(NT_LOG_DEBUG1, x) |
| 77 | #define DEBUG2(x) LOG(NT_LOG_DEBUG2, x) |
| 78 | #define DEBUG3(x) LOG(NT_LOG_DEBUG3, x) |
| 79 | #define DEBUG4(x) LOG(NT_LOG_DEBUG4, x) |
| 80 | #endif |
| 81 | |
| 82 | } // namespace nt |
| 83 | |
| 84 | #endif // NT_LOG_H_ |